{"id":21645,"date":"2026-08-22T02:25:04","date_gmt":"2026-08-22T00:25:04","guid":{"rendered":"https:\/\/migflug.com\/?page_id=21645"},"modified":"2026-08-22T02:25:04","modified_gmt":"2026-08-22T00:25:04","slug":"tupolev-tu-4","status":"publish","type":"page","link":"https:\/\/migflug.com\/ar\/aircraft\/tupolev-tu-4\/","title":{"rendered":"Tupolev Tu-4 \u2014 History, Specs &#038; Stories"},"content":{"rendered":"<div id=\"mfam\">\n<style> html{overflow-x:hidden} body.page-id-21645{overflow-x:hidden} body.page-id-21645 h1.entry-title.main_title{display:none} body.page-id-21645 #sidebar{display:none} body.page-id-21645 #left-area{width:100%!important;float:none;padding:0} body.page-id-21645 #main-content .container::before{display:none!important;background:none!important} body.page-id-21645 #main-content .container{padding-top:0;max-width:100%!important;width:100%!important} #mfam{width:100vw;margin-left:calc(50% - 50vw);overflow:hidden;font-family:'Gilroy 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The handful of survivors are static museum exhibits at Monino near Moscow and the China Aviation Museum at Datangshan. MiGFlug does not operate the Tu-4 and it is not a bookable ride. You can, however, fly in several genuine Cold-War military jets today. See the current line-up at https:\/\/migflug.com\/flights-prices\/.\"}},{\"@type\":\"Question\",\"name\":\"Is the Tupolev Tu-4 really a copy of the B-29?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, to a remarkable degree. After three Boeing B-29s made emergency landings in the Soviet Far East in 1944 and were interned, Stalin ordered Andrei Tupolev to reverse-engineer the aircraft rather than continue an indigenous design. Soviet engineers reportedly took the bombers apart, re-drew every part in metric units and reproduced the airframe with great fidelity. It is widely described as one of the most ambitious reverse-engineering programmes in history.\"}},{\"@type\":\"Question\",\"name\":\"Did the Soviets really copy a bullet hole or a repair patch onto the Tu-4?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"That is one of aviation's favourite legends, and it is almost certainly apocryphal or heavily exaggerated. The oft-repeated tale that engineers slavishly copied a field repair, a patch or drilled holes to match the originals makes a good story, but there is little solid evidence for it. What is well documented is that the Tu-4 differed from the B-29 in real ways: Soviet Shvetsov ASh-73TK engines instead of the American Wright R-3350, ten 23 mm cannon instead of Browning .50-calibre machine guns, and Soviet materials cut to metric gauges.\"}},{\"@type\":\"Question\",\"name\":\"What engines and armament did the Tu-4 use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The Tu-4 was powered by four Shvetsov ASh-73TK turbo-supercharged radial piston engines of roughly 2,400 hp each, a Soviet design unrelated to the B-29's Wright R-3350. For defence it carried ten 23 mm Nudelman-Suranov NS-23 cannon in remote-controlled turrets, a harder-hitting battery than the B-29's .50-calibre machine guns. Figures vary slightly between sources.\"}},{\"@type\":\"Question\",\"name\":\"Could the Tu-4 drop an atomic bomb?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The nuclear-capable Tu-4A gave the Soviet Union its first credible means of delivering an atomic bomb by air, and a Tu-4 was the first Soviet aircraft to drop a live nuclear weapon, in an October 1951 test. It underpinned the early Soviet nuclear deterrent, although its range was too short for a two-way mission against the continental United States, which fuelled the search for longer-legged bombers such as the Tu-95.\"}},{\"@type\":\"Question\",\"name\":\"How many Tu-4s were built and when did it fly?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The Tu-4 first flew on 19 May 1947 and entered service around 1949. Roughly 847 were built between about 1949 and 1952, though production figures vary between sources and some totals include derivatives. It was the most-produced Soviet strategic bomber of its era.\"}},{\"@type\":\"Question\",\"name\":\"Did China operate the Tu-4?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, and for a long time. The Soviet Union transferred Tu-4s to China from 1953, and the People's Liberation Army Air Force flew them into the late 1980s. China converted some airframes into the KJ-1 airborne-early-warning platform, re-engined others with Ivchenko AI-20 turboprops, and used some as carriers for La-17 target drones, making China one of the type's most inventive operators.\"}},{\"@type\":\"Question\",\"name\":\"What replaced the Tu-4?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"As jet and turboprop bombers matured, the Tu-4 was rapidly overtaken. The jet-powered Tupolev Tu-16 Badger and the turboprop Tupolev Tu-95 Bear entered service in the mid-1950s and pushed the piston-engined Tu-4 out of the first-line strategic role by the late 1950s, though it lingered in second-line and trials duties for years.\"}},{\"@type\":\"Question\",\"name\":\"Where can I see a Tu-4 today?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Surviving Tu-4s are on display at the Central Air Force Museum at Monino, near Moscow, and at the China Aviation Museum at Datangshan, north of Beijing, which preserves more than one airframe. These are the best places to appreciate just how closely the aircraft mirrors the B-29.\"}},{\"@type\":\"Question\",\"name\":\"Was the Tu-4 used for anything besides bombing?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Extensively. Beyond its nuclear-strike role the Tu-4 served as a flying laboratory for air-to-air refuelling experiments, the Burlaki parasite-fighter towing trials, early cruise-missile carriage, and drone operations, and it spawned the Tu-70 airliner and Tu-75 transport prototypes as well as the longer-ranged Tu-80 and Tu-85 bomber developments.\"}},{\"@type\":\"Question\",\"name\":\"How did the West react when it discovered the Tu-4?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"With considerable alarm. When Tu-4s were displayed over the Tushino Aviation Day parade in 1947, Western observers realised the Soviet Union had reproduced the most advanced bomber of the age and could build it in quantity. Combined with the 1949 Soviet atomic test, the Tu-4 signalled that the USSR now had both a bomb and a way to deliver it, sharpening the emerging Cold War arms race.\"}},{\"@type\":\"Question\",\"name\":\"Did the Tu-4 ever see combat?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The Tu-4 is best understood as a deterrent rather than a combat aircraft; the Soviet fleet was never committed to a major bombing campaign. Chinese Tu-4s are reported to have flown operational missions over remote and border regions, but the type's real weight was strategic and psychological. Its job was to exist, to be counted, and to make an adversary think twice.\"}},{\"@type\":\"Question\",\"name\":\"What did the Tu-4's crew of eleven actually do?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Like the B-29, the Tu-4 was a pressurised aircraft with a large crew spread through connected compartments: two pilots, a navigator, a bombardier in the glazed nose, a flight engineer managing the four radials, a radio operator, and several gunners operating the remote-controlled cannon turrets through sighting stations. A crawl tunnel over the bomb bay linked the forward and rear pressurised sections.\"}},{\"@type\":\"Question\",\"name\":\"Is the Tu-4 the same as the Tu-95 or the Tu-16?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, though they are relatives in the same Tupolev strategic-bomber lineage. The Tu-4 is a piston-engined 1940s design copied from the B-29. The Tu-16 Badger is a swept-wing jet bomber of the mid-1950s, and the Tu-95 Bear is a swept-wing turboprop of the same era with genuine intercontinental range. The Tu-16 and Tu-95 are the aircraft that replaced the Tu-4 in Soviet service.\"}},{\"@type\":\"Question\",\"name\":\"Why didn't the Soviets just design their own bomber instead of copying the B-29?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"They could have, and Tupolev had designs in progress. But an original aircraft meant years of prototyping and risk at the very moment the United States held a monopoly on both the atomic bomb and the means to deliver it. Copying the proven B-29 collapsed the timeline and, as a bonus, forced Soviet industry to master modern aircraft manufacturing across metallurgy, engines and electronics. It was a pragmatic decision to buy time and capability at once.\"}},{\"@type\":\"Question\",\"name\":\"How fast and how high could the Tu-4 fly?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The Tu-4 had a maximum speed of around 558 km\/h (about 347 mph) at altitude and a service ceiling of roughly 11,200 m (about 36,700 ft), broadly comparable to the B-29. These are typical figures for a large piston-engined bomber of the late 1940s; performance fell off with heavy loads and at extreme range, and sources vary slightly on the exact numbers.\"}},{\"@type\":\"Question\",\"name\":\"What is the KJ-1, and how is it related to the Tu-4?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The KJ-1 was China's first airborne-early-warning aircraft, created by mounting a large rotating radar dome on a Tu-4 airframe re-engined with AI-20 turboprops. The radar could not reliably pick targets out of ground clutter and the KJ-1 never entered service, but the experiment gave Chinese engineers foundational experience in airborne radar that informed the country's later, successful AEW aircraft.\"}}]}<\/script><section class=\"hero\" style=\"background-image:url('https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:1024\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-china-aviation-museum-datangshan.jpg')\">\n<div class=\"hwrap\">\n<h1>Tupolev Tu-4<\/h1>\n<p class=\"claim\">The Soviet Union&#8217;s first modern strategic bomber was not a Soviet design at all: it was a bolt-for-bolt reverse-engineered copy of the American Boeing B-29 Superfortress, and it carried the USSR&#8217;s first atomic deterrent aloft.<\/p>\n<div class=\"statstrip\">\n<div class=\"st\">\n<div class=\"sv\">1947<\/div>\n<div class=\"sl\">First flight (19 May)<\/div>\n<\/div>\n<div class=\"st\">\n<div class=\"sv\">~847<\/div>\n<div class=\"sl\">Built (figures vary)<\/div>\n<\/div>\n<div class=\"st\">\n<div class=\"sv\">5,400 km<\/div>\n<div class=\"sl\">Range with bomb load<\/div>\n<\/div>\n<div class=\"st\">\n<div class=\"sv\">4 x radial<\/div>\n<div class=\"sl\">Shvetsov ASh-73TK<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sec\">\n<div class=\"wrap\">\n<div class=\"chips\"><span class=\"chip\"><b>Role:<\/b> Strategic \/ nuclear bomber<\/span><span class=\"chip\"><b>Era:<\/b> Early Cold War<\/span><span class=\"chip\"><b>Engine:<\/b> 4 x radial piston<\/span><span class=\"chip\"><b>Origin:<\/b> USSR<\/span><span class=\"chip\"><b>Status:<\/b> Retired (survivors preserved)<\/span><span class=\"chip fly\">Museum survivors only<\/span><a href=\"#faq\" class=\"chip cta\">Want to fly a Cold-War jet yourself?<\/a><\/div>\n<\/div>\n<\/section>\n<section class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">The Story<\/p>\n<h2>The Tupolev Tu-4: how the Soviet Union copied America&#8217;s most advanced bomber<\/h2>\n<p class=\"lead\">In the last year of the Second World War, three of the most sophisticated aircraft in the world fell, almost intact, into Soviet hands. What Stalin did with them changed the shape of the Cold War.<\/p>\n<p>The Boeing B-29 Superfortress was the pinnacle of 1940s aeronautical engineering: pressurised, computer-aided in its gun-laying, capable of carrying heavy loads across oceanic distances at high altitude. It was so advanced, and so strategically valuable, that the United States refused to supply it to the Soviet Union even at the height of the wartime alliance. Then geography intervened. During 1944, B-29s raiding Japanese-held targets in Manchuria and Korea began diverting to the Soviet Far East when battle damage or fuel shortage made the long flight home impossible. Because the USSR and Japan were not yet at war, the Soviets were obliged under international law to intern the aircraft and their crews. Three repairable B-29s came into Soviet possession near Vladivostok.<\/p>\n<p>Andrei Tupolev, the Soviet Union&#8217;s foremost bomber designer, had his own advanced projects in hand. Stalin brushed them aside. The instruction that came down was uncompromising: reproduce the B-29 exactly, as fast as possible, and resist the temptation to improve it. It was a decision that valued certainty over pride. A faithful copy carried little technical risk and promised, in the shortest possible time, a modern long-range pressurised bomber capable of carrying the atomic bomb that Soviet scientists were themselves racing to build.<\/p>\n<div class=\"pquote\">&#8220;Copy it. Do not change anything.&#8221;<cite>The order attributed to Stalin, as recounted in most histories of the Tu-4 &#8211; the exact words are debated, the intent is not.<\/cite><\/div>\n<p>What followed was one of the most remarkable industrial feats of the twentieth century. One B-29 was flown as a reference aircraft, one was preserved untouched as a master pattern, and the third was carefully taken apart, every component weighed, measured and analysed. Each part then had to be re-drawn &#8211; and here lay the first great obstacle. The B-29 was designed in imperial units; Soviet industry worked in metric. Aluminium sheet, in particular, was rolled to metric thicknesses that did not exactly match the American gauges, forcing engineers to select the nearest equivalent and then recalculate the structure so that weight and strength stayed within limits. The programme reportedly generated on the order of 105,000 drawings and pulled in hundreds of factories and research institutes. Along the way it dragged Soviet aviation manufacturing, metallurgy and electronics up to a new standard &#8211; arguably a more lasting prize than the bomber itself.<\/p>\n<p>The result flew on 19 May 1947. To Western eyes the Tu-4 was almost eerie: the same slim fuselage, the same greenhouse nose, the same four podded engines. When examples were paraded over the Tushino Aviation Day display later that year, foreign attaches understood at once what they were looking at. Yet the Tu-4 was never the perfect clone of legend. Under the cowlings sat four Soviet Shvetsov ASh-73TK radials, unrelated to the B-29&#8217;s Wright R-3350. The defensive battery was uprated to ten 23 mm cannon in place of the American .50-calibre machine guns. Soviet radios, oxygen systems, instruments and materials went in throughout. It looked American; it was thoroughly Soviet.<\/p>\n<p>Its true significance was strategic. Entering service around 1949, the Tu-4 gave the Soviet Union its first credible means of delivering an atomic bomb by air. The nuclear-capable Tu-4A dropped the USSR&#8217;s first air-delivered nuclear weapon in 1951, and for several tense years the aircraft was the physical embodiment of the young Soviet deterrent. Its great limitation was range: it could reach the northern United States only on a one-way flight, a shortfall that drove the development of the longer-ranged Tu-80, Tu-85 and ultimately the intercontinental Tu-95.<\/p>\n<p>The Tu-4&#8217;s arrival did not go unnoticed abroad. When the aircraft appeared over the 1947 Tushino display, and again as Western intelligence pieced together its numbers, it forced a reassessment of Soviet strategic capability. Coupled with the first Soviet atomic test in 1949, the message was unmistakable: the USSR now possessed both a bomb and an aircraft that could carry it. For the United States, which had counted on a monopoly of both, the Tu-4 was an early, sobering marker of the nuclear stand-off to come.<\/p>\n<p>Overtaken by jets and turboprops, the Tu-4 slipped from the front line by the late 1950s at home &#8211; but its story was far from over. China, which received the type from 1953, kept it flying until 1988, converting examples along the way into radar-dome early-warning aircraft and drone carriers and re-engining others with turboprops. Few aircraft have travelled a stranger road: born as a copy of an enemy&#8217;s bomber, salvaged from forced landings and rebuilt by a rival superpower, it ended its long career as a genuine pioneer in the hands of a third nation.<\/p>\n<div class=\"gd\">\n<details>\n<summary><span class=\"exn\">01<\/span><span class=\"ext\">The Tu-4&#8217;s origins: why Stalin chose to copy the B-29 instead of building his own<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>Tupolev&#8217;s bureau had been sketching pressurised, long-range bombers throughout the war, and a home-grown design would eventually have flown. But an indigenous aircraft meant years of prototyping, testing and teething troubles at a moment when the United States already had an atomic bomb and the means to deliver it. Copying the B-29 collapsed that timeline. It also solved a subtler problem: it forced Soviet industry to master a complete, coherent, state-of-the-art aircraft rather than a patchwork of promising but immature national technologies.<\/p>\n<p>The cost was pride and, arguably, innovation &#8211; Tupolev is said to have resented spending years reproducing another nation&#8217;s work. But the strategic calculus was sound. Within a few years the USSR had a fleet of modern bombers and, just as importantly, factories that knew how to build them.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">02<\/span><span class=\"ext\">The Tu-4&#8217;s reverse-engineering programme: measuring, re-drawing and the metric problem<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>The single most-quoted detail of the Tu-4 story is the aluminium. American sheet came in imperial thicknesses; the nearest Soviet metric gauges were slightly thinner or thicker. Simply substituting them would have thrown off the aircraft&#8217;s weight and structural margins, so engineers had to recompute the affected structure. Similar puzzles arose across the airframe, from fasteners to wiring to instruments calibrated in different units.<\/p>\n<p>This is why the popular image of blind, slavish copying is misleading. Reproducing the B-29 in the Soviet Union was not photocopying &#8211; it was a vast exercise in translation, in which tens of thousands of small engineering decisions were made to reach the same result with different materials and standards.<\/p>\n<p>It is worth pausing on the sheer coordination involved. Engine plants, instrument makers, radio and radar workshops, metallurgical institutes and the airframe bureau all had to converge on a single coherent design, to a common set of tolerances, at the same time. Programmes of that complexity routinely fail. That the Soviet Union pulled this one off in only a couple of years, starting from three foreign bombers, remains one of the great feats of twentieth-century industrial organisation &#8211; regardless of what one thinks of copying a rival&#8217;s aircraft.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">03<\/span><span class=\"ext\">The apocryphal Tu-4 &#8216;patch&#8217; legend and the real differences from the B-29<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>You will often read that Soviet engineers copied a repair patch, a bullet hole, or an antenna scar from one of the interned bombers onto every production Tu-4. It is a marvellous illustration of over-literal copying &#8211; and it is almost certainly folklore. No reliable source documents it, and it sits uneasily with the genuine, well-attested differences between the two aircraft.<\/p>\n<p>Those real differences matter more than the myth: Shvetsov ASh-73TK engines rather than Wright R-3350s; ten 23 mm NS-23 cannon rather than Browning .50-calibre machine guns; Soviet avionics, oxygen and de-icing systems; and metric materials throughout. The Tu-4 was a convincing look-alike, not a molecular duplicate.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sec alt\">\n<div class=\"wrap\">\n<p class=\"kicker\">Design &amp; Engineering<\/p>\n<h2>How the Tupolev Tu-4 was built: the engineering decisions that defined it<\/h2>\n<p class=\"lead\">Copying an aircraft sounds simple until you try it. Reproducing the B-29 meant recreating not just its shape but its engines, its guns, its electronics and its structure &#8211; each in a Soviet industry that used different materials, different units and different standards.<\/p>\n<p>The decisions below are the ones that mattered most: where the Tu-4 stayed faithful to the original, and where the realities of Soviet manufacturing forced genuine change. Together they explain why the Tu-4 was a convincing look-alike rather than a molecular duplicate.<\/p>\n<div class=\"ncards\">\n<div class=\"ncard\">\n<div class=\"n\">01<\/div>\n<h3>A Soviet heart in an American airframe<\/h3>\n<p>Four Shvetsov ASh-73TK turbo-supercharged radials of roughly 2,400 hp each powered the Tu-4 &#8211; a Soviet engine, not a copy of the B-29&#8217;s Wright R-3350. Matching an unfamiliar powerplant to a foreign airframe was one of the programme&#8217;s hardest tasks.<\/p>\n<\/div>\n<div class=\"ncard\">\n<div class=\"n\">02<\/div>\n<h3>Ten cannon instead of machine guns<\/h3>\n<p>The Tu-4 kept the B-29&#8217;s remote-controlled defensive concept but replaced the .50-calibre machine guns with ten 23 mm NS-23 cannon in paired turrets &#8211; harder-hitting and longer-ranged, and a clear sign the Soviets were willing to change what mattered.<\/p>\n<\/div>\n<div class=\"ncard\">\n<div class=\"n\">03<\/div>\n<h3>Pressurisation and metric structure<\/h3>\n<p>Like the B-29, the Tu-4 was pressurised for high-altitude flight, with crew tunnels linking the compartments. Rebuilding that structure in metric gauges of Soviet aluminium was the quiet triumph of the whole project.<\/p>\n<\/div>\n<div class=\"ncard\">\n<div class=\"n\">04<\/div>\n<h3>Copied radar, re-built fire control<\/h3>\n<p>The Tu-4&#8217;s Kobalt bombing radar was derived from the American AN\/APQ-13 found on the interned bombers, and the remote-turret fire-control system was re-engineered to drive Soviet cannon &#8211; forcing the USSR to master airborne electronics at speed.<\/p>\n<\/div>\n<div class=\"ncard\">\n<div class=\"n\">05<\/div>\n<h3>A heavier clone<\/h3>\n<p>The metric material substitutions left the Tu-4 slightly heavier than the B-29, with a small performance penalty. It was the unavoidable price of translating an imperial aircraft into a metric industry.<\/p>\n<\/div>\n<div class=\"ncard\">\n<div class=\"n\">06<\/div>\n<h3>Built for numbers<\/h3>\n<p>The programme was designed not to produce a handful of copies but to put a modern bomber into mass production. That industrial ambition &#8211; hundreds of aircraft, a whole supply chain &#8211; was as important as the airframe itself.<\/p>\n<\/div>\n<\/div>\n<div class=\"gd\">\n<details>\n<summary><span class=\"exn\">04<\/span><span class=\"ext\">The Tu-4&#8217;s powerplant: the Shvetsov ASh-73TK radial explained<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>The ASh-73TK was a large 18-cylinder twin-row radial fitted with turbo-superchargers to preserve power at altitude, exactly the regime in which a high-flying strategic bomber operates. Delivering around 2,400 hp, it gave the Tu-4 performance broadly comparable to the B-29 while keeping the aircraft firmly within the Soviet industrial base. Its development and mass production were achievements in their own right, and variants of the engine went on to power other heavy Soviet types.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">05<\/span><span class=\"ext\">The Tu-4&#8217;s derivatives: from the Tu-70 airliner to the Tu-85<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>The Tu-4 was a fertile parent. The Tu-70 adapted the wings, engines and tail to a wide new fuselage for a pressurised airliner; the Tu-75 did the same for a military transport. Neither reached production, but both proved the airframe&#8217;s versatility. More significantly, the search for the range the Tu-4 lacked produced the enlarged Tu-80 and the much larger Tu-85 &#8211; the ultimate piston-engined Soviet bomber &#8211; before the jet and turboprop age made big pistons obsolete and led to the Tu-16 and Tu-95.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Full Specifications<\/p>\n<h2>Tupolev Tu-4 specifications, performance and cost data<\/h2>\n<p class=\"lead\">The Tu-4&#8217;s numbers mirror the B-29&#8217;s closely, as you would expect of a faithful copy &#8211; with real divergences in powerplant, armament and, because Soviet accounting worked differently, cost. Figures below are drawn from standard references and hedged where sources disagree.<\/p>\n<div class=\"spectables\">\n<table class=\"spec\">\n<caption>Airframe &amp; performance<\/caption>\n<tr>\n<th>Crew<\/th>\n<td>11 (pilots, navigator, bombardier, engineer, radio operator, gunners)<\/td>\n<\/tr>\n<tr>\n<th>Length<\/th>\n<td>30.18 m (99 ft 0 in)<\/td>\n<\/tr>\n<tr>\n<th>Wingspan<\/th>\n<td>43.05 m (141 ft 3 in)<\/td>\n<\/tr>\n<tr>\n<th>Height<\/th>\n<td>~8.46 m (27 ft 9 in)<\/td>\n<\/tr>\n<tr>\n<th>Wing area<\/th>\n<td>~161.7 m&sup2; (1,743 sq ft)<\/td>\n<\/tr>\n<tr>\n<th>Empty weight<\/th>\n<td>~35,270 kg (77,800 lb), figures vary<\/td>\n<\/tr>\n<tr>\n<th>Max takeoff weight<\/th>\n<td>~63,600-66,000 kg (approx; sources differ)<\/td>\n<\/tr>\n<tr>\n<th>Powerplant<\/th>\n<td>4 x Shvetsov ASh-73TK turbo-supercharged radial piston engines<\/td>\n<\/tr>\n<tr>\n<th>Power<\/th>\n<td>~2,400 hp (1,790 kW) each<\/td>\n<\/tr>\n<tr>\n<th>Maximum speed<\/th>\n<td>~558 km\/h (347 mph) at altitude<\/td>\n<\/tr>\n<tr>\n<th>Cruise speed<\/th>\n<td>~350 km\/h (approx)<\/td>\n<\/tr>\n<tr>\n<th>Service ceiling<\/th>\n<td>~11,200 m (36,700 ft)<\/td>\n<\/tr>\n<tr>\n<th>Range<\/th>\n<td>~5,400 km (3,350 mi) with bomb load<\/td>\n<\/tr>\n<tr>\n<th>First flight<\/th>\n<td>19 May 1947<\/td>\n<\/tr>\n<tr>\n<th>Number built<\/th>\n<td>~847 (sources vary; some totals include derivatives)<\/td>\n<\/tr>\n<\/table>\n<table class=\"spec\">\n<caption>Armament, payload &amp; cost<\/caption>\n<tr>\n<th>Defensive armament<\/th>\n<td>10 x 23 mm Nudelman-Suranov NS-23 cannon in remote turrets<\/td>\n<\/tr>\n<tr>\n<th>Bomb load (typical)<\/th>\n<td>Up to ~6,000 kg; higher overload figures are quoted<\/td>\n<\/tr>\n<tr>\n<th>Bombing radar<\/th>\n<td>Kobalt (derived from the American AN\/APQ-13)<\/td>\n<\/tr>\n<tr>\n<th>Nuclear capability<\/th>\n<td>Tu-4A modified to carry and drop an atomic bomb<\/td>\n<\/tr>\n<tr>\n<th>First nuclear drop<\/th>\n<td>RDS-3 test, October 1951 (first by a Soviet aircraft)<\/td>\n<\/tr>\n<tr>\n<th>NATO reporting name<\/th>\n<td>Bull<\/td>\n<\/tr>\n<tr>\n<th>Primary operators<\/th>\n<td>Soviet Union; China (PLAAF)<\/td>\n<\/tr>\n<tr>\n<th>Unit cost<\/th>\n<td>Not reliably recorded (Soviet-era programme)<\/td>\n<\/tr>\n<tr>\n<th>Cost per flight hour<\/th>\n<td>Not reliably recorded<\/td>\n<\/tr>\n<tr>\n<th>Programme cost<\/th>\n<td>Not reliably recorded; drew in hundreds of enterprises<\/td>\n<\/tr>\n<tr>\n<th>Service life<\/th>\n<td>USSR c.1949-late 1950s (front line); China to 1988<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"gd\">\n<details>\n<summary><span class=\"exn\">06<\/span><span class=\"ext\">The Tupolev Tu-4&#8217;s operating costs: what the numbers do and don&#8217;t tell us<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>Unlike Western aircraft of the period, the Tu-4 has no publicly reliable unit price, cost-per-flight-hour or programme total. Soviet defence accounting did not work in comparable terms, and the figures that circulate are estimates at best. What can be said is qualitative: the reverse-engineering effort consumed enormous national resources across hundreds of enterprises, and operating a fleet of four-radial-engined heavy bombers was expensive in fuel, spares and skilled manpower. We have marked every cost field as &#8220;not reliably recorded&#8221; rather than repeat unsupported numbers.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">07<\/span><span class=\"ext\">Tu-4 variants: the bomber, the tanker, the drone carrier and the KJ-1<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>Beyond the baseline bomber and the nuclear-capable Tu-4A, the fleet spawned tanker and receiver conversions for refuelling trials, the Burlaki parasite-fighter tow aircraft, missile-carrier experiments and drone-director versions. In China the type was reworked most radically of all: the KJ-1 airborne-early-warning conversion mounted a large rotating radar dome and AI-20 turboprops, while the drone-carrier conversions lofted La-17 target drones. Not all of these entered service, but together they show how much life was wrung from the airframe.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">08<\/span><span class=\"ext\">The Tu-4&#8217;s radar and avionics: copying the AN\/APQ-13 and building a Soviet electronics base<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>The B-29 was not just an airframe; it was a flying electronics suite, and reproducing it forced the USSR to master radar, radio and remote-turret fire control at once. The Tu-4&#8217;s Kobalt bombing-and-navigation radar was derived from the American AN\/APQ-13 carried aboard the interned aircraft, while the remote-controlled gun system had to be re-engineered to drive Soviet 23 mm cannon.<\/p>\n<p>This electronics dimension is often overlooked in the &#8216;they copied a bomber&#8217; summary. Arguably the avionics were harder to reproduce than the aluminium, and the capabilities the USSR built to do it seeded a domestic industry in airborne radar and fire control that mattered long after the Tu-4 was gone.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">09<\/span><span class=\"ext\">The Tu-4 and the Soviet atomic programme: delivery for a new kind of weapon<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>An atomic bomb is only a deterrent if it can be delivered. The USSR tested its first nuclear device in August 1949, and the Tu-4A gave the growing arsenal its first credible air-delivery platform. In October 1951 a Tu-4 dropped the RDS-3 in a live test, demonstrating the full chain from aircraft to detonation.<\/p>\n<p>For the first half of the 1950s, before missiles and longer-ranged bombers matured, the Tu-4 fleet was the visible edge of Soviet nuclear power. Its numbers and readiness were watched closely in the West, and its limitations &#8211; above all range &#8211; shaped how both superpowers thought about the balance of terror.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">10<\/span><span class=\"ext\">The Tu-4 in Chinese service: from Soviet gift to home-grown testbed<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>China received its first Tu-4s in 1953 and made them the core of the PLAAF&#8217;s strategic bomber force at a moment when the country had almost no heavy-bomber capability of its own. Over the following decades the aircraft flew bombing, reconnaissance, transport and survey missions and became a familiar sight in Chinese service.<\/p>\n<p>What makes the Chinese chapter remarkable is how far the aircraft was developed locally. When Soviet engine support became uncertain, China re-engined Tu-4s with domestically-supported AI-20 turboprops. It built the KJ-1 radar-dome early-warning conversion, and it turned others into drone carriers. The last Chinese Tu-4 was retired only in 1988, closing nearly four decades of service.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">11<\/span><span class=\"ext\">Why the Tu-4 was retired so quickly at home: the jet and turboprop revolution<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>The Tu-4 entered service around 1949, and within less than a decade it was obsolete for front-line strategic work. The reason was the extraordinary pace of aeronautical progress in the 1950s. The swept-wing, jet-powered Tu-16 Badger offered far higher speed, and the turboprop Tu-95 Bear delivered the intercontinental range the Tu-4 had always lacked.<\/p>\n<p>By the late 1950s the piston-engined Tu-4 had been pushed out of the first line at home, continuing in transport, tanker, trials and second-line duties. Its rapid eclipse is a measure of just how fast the technology moved &#8211; and of how sensible Stalin&#8217;s original decision to copy rather than innovate had been, given that any home-grown 1940s piston bomber would have been overtaken just as quickly.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">12<\/span><span class=\"ext\">The B-29 Superfortress: the aircraft the Tu-4 was copied from<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>To understand the Tu-4 you have to understand what made the Boeing B-29 worth copying. It was the most sophisticated bomber of the Second World War: pressurised so its crew could operate in shirtsleeves at high altitude, defended by remote-controlled gun turrets aimed through an analogue fire-control computer, and able to carry heavy loads over very long ranges. It was the aircraft that dropped the atomic bombs on Hiroshima and Nagasaki.<\/p>\n<p>Reproducing it handed the USSR not just a bomber but a template for modern aircraft manufacturing. If you want to see the original and the copy side by side, our <a href=\"https:\/\/migflug.com\/aircraft\/b-29-superfortress\/\">B-29 Superfortress<\/a> exhibit tells the American half of the story.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">13<\/span><span class=\"ext\">Air-to-air refuelling and the Burlaki parasite experiments on the Tu-4<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>Because the Tu-4 lacked intercontinental range, the Soviet air force used it to explore ways of extending reach. Tu-4s trialled both wingtip-to-wingtip &#8216;wing-to-wing&#8217; refuelling and hose-and-drogue methods, building the expertise that later made in-flight refuelling routine on Soviet jet bombers.<\/p>\n<p>Stranger still were the Burlaki experiments, in which a Tu-4 towed a fighter behind it on a cable so the escort could conserve fuel and be &#8216;delivered&#8217; fresh to the target area. It was a literal parasite-fighter concept, and while it never entered service, it typifies how the copied bomber became a platform for genuinely original Soviet ideas.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">14<\/span><span class=\"ext\">Flying the Tu-4: the eleven-man crew and the pressurised compartments<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>The Tu-4 carried a crew of about eleven, distributed like the B-29&#8217;s through pressurised compartments connected by a crawl tunnel over the bomb bay. Up front sat the two pilots, the navigator, the bombardier in the glazed nose and the flight engineer, who had the demanding job of nursing four large radial engines and their turbo-superchargers.<\/p>\n<p>Gunners operated the remote-controlled cannon turrets from sighting stations rather than sitting in the turrets themselves &#8211; an advanced arrangement for the 1940s that the Soviets had to reproduce and adapt to their own 23 mm guns. High-altitude, long-endurance flying in a piston bomber was cold, noisy and exhausting work, and crew endurance was a real operational limit.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">15<\/span><span class=\"ext\">&#8216;Bull&#8217;: the NATO reporting name and how the West tracked the Tu-4<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>NATO assigned the Tu-4 the reporting name &#8216;Bull&#8217;, following the convention of using a word beginning with &#8216;B&#8217; for bombers. For Western intelligence the aircraft was a priority target of study: how many existed, where they were based, and above all whether they could reach North America.<\/p>\n<p>The answer to that last question &#8211; not on a two-way mission &#8211; shaped Western threat assessments in the early 1950s and fed the debates about air defence, early-warning radar lines and the bomber balance that dominated the period. The Tu-4 was, in that sense, as important for the anxiety it created as for anything it ever did.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">16<\/span><span class=\"ext\">The interned B-29 crews: how the Americans got home<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>The airmen whose B-29s came down in the Soviet Far East in 1944 presented Moscow with a diplomatic problem. The USSR was neutral in the Pacific war and could not simply hand the crews or aircraft back to the United States without provoking Japan.<\/p>\n<p>The solution was a piece of theatre: the interned Americans were moved to Soviet Central Asia and allowed to &#8216;escape&#8217; across the border, a fiction that let the crews return home while the Soviet Union kept the bombers. The men went home; the aircraft became the seeds of the Tu-4.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">17<\/span><span class=\"ext\">How accurate is the &#8216;847 built&#8217; figure for the Tu-4?<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>Production totals for Soviet-era aircraft are notoriously slippery, and the Tu-4 is no exception. The figure most often cited is around 847 aircraft built between roughly 1949 and 1952, but you will also see totals quoted a little higher or lower depending on how derivatives, prototypes and conversions are counted.<\/p>\n<p>We use &#8216;~847&#8217; and flag it as an estimate. What is not in doubt is the order of magnitude: this was a mass-produced bomber built in the high hundreds, not a handful of hand-made copies &#8211; which is exactly what made it strategically significant.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">18<\/span><span class=\"ext\">The Tu-4 and the birth of Soviet Long-Range Aviation<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>The Tu-4 did more than equip existing units; it helped define what Soviet Long-Range Aviation would become. Operating a large fleet of complex, four-engined pressurised bombers demanded new bases, new maintenance and logistics chains, new training, and new command structures for strategic air power.<\/p>\n<p>By the time the jet Tu-16 and turboprop Tu-95 arrived, the USSR already had the institutional machinery to absorb them, thanks in large part to the Tu-4 years. The aircraft trained a generation of aircrew and ground staff in modern strategic operations.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">19<\/span><span class=\"ext\">Myths, movies and the Tu-4 in popular memory<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>The Tu-4 occupies an outsized place in aviation folklore precisely because its story is so cinematic: forced landings, an autocrat&#8217;s order, a bolt-for-bolt copy, an atomic first. That drama is also why the myths &#8211; the copied patch above all &#8211; have proved so durable.<\/p>\n<p>The honest version is more interesting than the legend. The Tu-4 was neither a mindless clone nor a Soviet original, but a vast act of technical translation that changed an industry and helped set the terms of the nuclear age. Retiring the myths does not diminish the aircraft; it lets the real achievement show.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">20<\/span><span class=\"ext\">The Tu-4&#8217;s remote turrets: reproducing analogue fire control<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>One of the B-29&#8217;s most advanced features was its defensive system: gunners aimed remote-controlled turrets from sighting stations, with an analogue computer correcting for range, lead and parallax. Reproducing this in the Tu-4 was a serious challenge, and the Soviets had to re-engineer the whole system to drive their heavier 23 mm cannon rather than the American machine guns.<\/p>\n<p>Getting a 1940s electromechanical fire-control system to work with different weapons and Soviet-made components was arguably as demanding as any part of the airframe copy, and it pushed Soviet precision engineering and electronics forward in the process.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary><span class=\"exn\">21<\/span><span class=\"ext\">Reading a Tu-4 today: what the museum survivors reveal<\/span><span class=\"expm\">+<\/span><\/summary>\n<div class=\"exbody\">\n<p>Standing beside a preserved Tu-4 at Monino or Datangshan, the first impression is simply how much it looks like a B-29 &#8211; the glazed nose, the slim aluminium fuselage, the four engine nacelles. Look closer and the differences emerge: the cannon barrels of the 23 mm turrets, the details of the engine cowlings, the Cyrillic stencilling.<\/p>\n<p>These aircraft are the most tangible evidence of the whole story. They let you see, in a single glance, both the faithfulness of the copy and the quiet ways in which a Soviet aircraft asserted itself inside an American shape.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sec alt\">\n<div class=\"wrap\">\n<p class=\"kicker\">Copy vs Original<\/p>\n<h2>Tupolev Tu-4 vs Boeing B-29: how the copy compared<\/h2>\n<p class=\"lead\">Seen side by side, the two aircraft are almost indistinguishable in shape and size &#8211; and clearly different where it counted, in engines, guns and units of measurement.<\/p>\n<div class=\"spectables\">\n<table class=\"spec\">\n<caption>The Tupolev Tu-4<\/caption>\n<tr>\n<th>Origin<\/th>\n<td>USSR (reverse-engineered)<\/td>\n<\/tr>\n<tr>\n<th>Engines<\/th>\n<td>4 x Shvetsov ASh-73TK radials<\/td>\n<\/tr>\n<tr>\n<th>Defensive guns<\/th>\n<td>10 x 23 mm NS-23 cannon<\/td>\n<\/tr>\n<tr>\n<th>Units of design<\/th>\n<td>Metric<\/td>\n<\/tr>\n<tr>\n<th>First flight<\/th>\n<td>1947<\/td>\n<\/tr>\n<tr>\n<th>Bombing radar<\/th>\n<td>Kobalt (derived from AN\/APQ-13)<\/td>\n<\/tr>\n<tr>\n<th>Numbers built<\/th>\n<td>~847<\/td>\n<\/tr>\n<\/table>\n<table class=\"spec\">\n<caption>The Boeing B-29 Superfortress<\/caption>\n<tr>\n<th>Origin<\/th>\n<td>United States (original design)<\/td>\n<\/tr>\n<tr>\n<th>Engines<\/th>\n<td>4 x Wright R-3350 radials<\/td>\n<\/tr>\n<tr>\n<th>Defensive guns<\/th>\n<td>.50-calibre machine guns (plus a tail cannon on some)<\/td>\n<\/tr>\n<tr>\n<th>Units of design<\/th>\n<td>Imperial<\/td>\n<\/tr>\n<tr>\n<th>First flight<\/th>\n<td>1942<\/td>\n<\/tr>\n<tr>\n<th>Bombing radar<\/th>\n<td>AN\/APQ-13<\/td>\n<\/tr>\n<tr>\n<th>Numbers built<\/th>\n<td>~3,970<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<p class=\"mapnote\">Dimensions were near-identical by design &#8211; wingspan around 43 m and length around 30 m for both. The visible giveaways of a Tu-4 are the engine cowlings and the cannon barrels; almost everything else was faithfully reproduced.<\/p>\n<\/div>\n<\/section>\n<section class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Timeline<\/p>\n<h2>The Tupolev Tu-4 timeline: from interned B-29s to Chinese retirement<\/h2>\n<div class=\"tl\">\n<div class=\"ev\"><span class=\"yr\">1944<\/span><\/p>\n<p>B-29s raiding Japanese targets divert to the neutral Soviet Far East and are interned near Vladivostok; three repairable aircraft are retained.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">1945<\/span><\/p>\n<p>Stalin orders Andrei Tupolev to reverse-engineer the B-29 exactly rather than pursue an indigenous design; the OKB begins measuring and re-drawing every part in metric.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">1947<\/span><\/p>\n<p>First flight of the Tu-4 on 19 May; three examples and the Tu-70 airliner derivative are shown at the Tushino Aviation Day display, stunning Western observers.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">1949<\/span><\/p>\n<p>The Tu-4 (NATO reporting name &#8216;Bull&#8217;) enters service with Soviet Long-Range Aviation; series production ramps up.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">1951<\/span><\/p>\n<p>A Tu-4 becomes the first Soviet aircraft to drop a live nuclear weapon, the RDS-3, cementing its role in the early Soviet deterrent.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">1949-1952<\/span><\/p>\n<p>Roughly 847 aircraft are built (figures vary); trials of air-to-air refuelling, the Burlaki parasite-fighter tow and missile carriage begin.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">1953<\/span><\/p>\n<p>The Soviet Union transfers Tu-4s to China; the type becomes the backbone of the PLAAF bomber force.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">mid-1950s<\/span><\/p>\n<p>The jet Tu-16 and turboprop Tu-95 enter service and begin displacing the piston-engined Tu-4 from the first-line strategic role.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">late 1950s<\/span><\/p>\n<p>The Tu-4 is withdrawn from front-line Soviet strategic duty, continuing in transport, tanker, trials and second-line roles.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">1970-1973<\/span><\/p>\n<p>China converts Tu-4s into the KJ-1 AEW platform and re-engines examples with AI-20 turboprops; others become La-17 drone carriers.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">1988<\/span><\/p>\n<p>China retires its last Tu-4, closing nearly four decades of service for the reverse-engineered Superfortress.<\/p>\n<\/div>\n<div class=\"ev\"><span class=\"yr\">today<\/span><\/p>\n<p>Survivors remain on display at Monino (Russia) and the China Aviation Museum at Datangshan.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">The Second Life<\/p>\n<h2>The Tupolev Tu-4 in Chinese service: the Superfortress that flew until 1988<\/h2>\n<p class=\"lead\">The Tu-4&#8217;s most surprising chapter was written not in the Soviet Union but in China, where the reverse-engineered bomber found a second career that lasted three decades longer than its front-line service at home.<\/p>\n<p>When the People&#8217;s Republic of China turned to building a modern air force in the early 1950s, it had almost no heavy-bomber capability. The Soviet transfer of Tu-4s from 1953 changed that at a stroke. A first batch of around ten aircraft &#8211; later supplemented &#8211; became the backbone of the PLAAF&#8217;s strategic bomber arm, giving China a long-range platform for bombing, maritime patrol, reconnaissance, transport and survey work. For a country with vast, remote frontiers, the Tu-4&#8217;s range and payload were genuinely useful, and the type reportedly supported operations over western and border regions where few other aircraft could reach.<\/p>\n<p>Keeping a 1940s piston bomber flying into the 1970s and 1980s took ingenuity, and this is where China&#8217;s Tu-4 story becomes distinctive. As Soviet support for the original ASh-73 engines became unreliable, Chinese engineers re-engined Tu-4s with Ivchenko AI-20 turboprops &#8211; the same family of engines used on other Soviet and Chinese types &#8211; transforming the aircraft&#8217;s maintenance picture and, incidentally, its appearance. The turboprop conversion was not merely a repair; it turned the Tu-4 into a testbed and a workhorse for a new generation of Chinese aviation engineers.<\/p>\n<p>The boldest conversion was the KJ-1, China&#8217;s first airborne-early-warning aircraft. Engineers mounted a large rotating radar dome above a Tu-4 fuselage and paired it with the turboprop engines, attempting to give the PLAAF a flying radar picket at a time when such aircraft were rare and closely guarded technology. The KJ-1&#8217;s radar struggled to separate aircraft from ground clutter and the type never entered squadron service &#8211; but the programme was far from a failure. It taught Chinese industry hard lessons about airborne radar, systems integration and the aerodynamics of a large dome, knowledge that fed directly into the successful AEW aircraft China fields today. Other Tu-4s were adapted to carry and launch La-17 target drones, extending the airframe&#8217;s usefulness into roles its American designers never imagined.<\/p>\n<p>There is a neat symmetry in China&#8217;s inventiveness with the type. The Tu-4 existed because the Soviet Union had chosen the pragmatic path of copying a proven design rather than gambling on an untried one. China, inheriting that copy, then did the opposite &#8211; it experimented boldly, re-engining airframes, mounting radar domes and hanging drones under the wings, treating the aircraft as a platform to learn on rather than a museum piece to preserve. Between them, the two operators wrung nearly every possible use out of a single 1940s airframe.<\/p>\n<p>When the last Chinese Tu-4 was finally retired in 1988, it closed a story that had begun with forced landings in 1944. An aircraft designed in Seattle, copied in the Soviet Union and reborn in China had served, in one form or another, for the better part of half a century.<\/p>\n<\/div>\n<\/section>\n<section class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Stories &amp; Eyewitnesses<\/p>\n<h2>Fifteen stories behind the Tupolev Tu-4<\/h2>\n<p class=\"lead\">The Tu-4&#8217;s history is a chain of extraordinary episodes &#8211; forced landings, an impossible order, a metric headache, an atomic first, and a second life in China. Tap a card to read each one.<\/p>\n<div class=\"caro\">\n<div class=\"nav\"><button onclick=\"this.closest('.caro').querySelector('.track').scrollBy({left:-712,behavior:'smooth'})\" aria-label=\"Scroll left\">&#8249;<\/button><button onclick=\"this.closest('.caro').querySelector('.track').scrollBy({left:712,behavior:'smooth'})\" aria-label=\"Scroll right\">&#8250;<\/button><\/div>\n<div class=\"track\">\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">The interned Superfortresses<\/span><\/p>\n<h4>Three B-29s that never went home<\/h4>\n<p class=\"sc-tease\">In the summer and autumn of 1944, American B-29s raiding Japanese targets in Manchuria and Korea began diverting to&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>In the summer and autumn of 1944, American B-29s raiding Japanese targets in Manchuria and Korea began diverting to Soviet territory when they were damaged or short of fuel. The USSR and Japan were not yet at war, so under international law the Soviets were obliged to intern the crews and impound the aircraft.<\/p>\n<p>Several B-29s came down in the Soviet Far East near Vladivostok. Among the aircraft usually named in the story are the &#8216;Ramp Tramp&#8217;, the &#8216;General H.H. Arnold Special&#8217; and &#8216;Ding Hao&#8217;, which arrived between July and November 1944. One badly damaged machine was written off; the rest were flyable or repairable.<\/p>\n<p>The crews were eventually spirited out through Soviet Central Asia in a diplomatic fiction that let both sides save face &#8211; they were reported to have &#8216;escaped&#8217;. The bombers stayed behind, and three repairable examples became the raw material for one of the most audacious industrial projects of the twentieth century.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">Stalin&#8217;s order<\/span><\/p>\n<h4>Copy it, exactly<\/h4>\n<p class=\"sc-tease\">Andrei Tupolev had his own advanced bomber designs on the drawing board, including the projected Tu-64. Stalin swept&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>Andrei Tupolev had his own advanced bomber designs on the drawing board, including the projected Tu-64. Stalin swept them aside. The order, as it has come down to us, was blunt: reproduce the B-29 precisely and quickly, and do not try to improve it.<\/p>\n<p>The logic was cold and correct. A faithful copy removed technical risk and delivered, in the shortest possible time, a modern pressurised long-range bomber that could carry the atomic bomb the USSR was racing to build under Igor Kurchatov.<\/p>\n<p>Tupolev is said to have chafed at the assignment &#8211; a designer of his stature spending years reproducing another nation&#8217;s aircraft. But he understood the stakes, and he understood that the exercise would drag the whole Soviet aviation industry up to a new level of precision.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">Re-drawing an aircraft in metric<\/span><\/p>\n<h4>105,000 drawings and a nation of factories<\/h4>\n<p class=\"sc-tease\">One B-29 was flown as a reference aircraft, one was kept intact as an untouched master pattern, and the third was&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>One B-29 was flown as a reference aircraft, one was kept intact as an untouched master pattern, and the third was carefully dismantled, part by part, and measured. Every component then had to be re-drawn in metric units and matched to Soviet materials and manufacturing methods.<\/p>\n<p>The effort reportedly drew in hundreds of factories and research institutes across the Soviet Union and generated on the order of 105,000 drawings. Exact figures vary between sources, but every account agrees the programme reshaped Soviet aviation industry itself.<\/p>\n<p>The management challenge alone was staggering: coordinating engine plants, instrument makers, metallurgists, electronics workshops and the airframe bureau to reproduce a single foreign aircraft to a common, coherent standard. In doing so the USSR modernised capabilities that outlasted the Tu-4 by decades.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">The metric problem<\/span><\/p>\n<h4>When the aluminium didn&#8217;t fit<\/h4>\n<p class=\"sc-tease\">The B-29&#8217;s skin was built up from aluminium sheet in American imperial gauges. Soviet mills rolled metric thicknesses,&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>The B-29&#8217;s skin was built up from aluminium sheet in American imperial gauges. Soviet mills rolled metric thicknesses, and there was no exact match. Engineers had to choose the nearest metric gauge and then recalculate the affected structure to keep weight and strength within limits.<\/p>\n<p>Multiply that decision across the whole airframe &#8211; skins, stringers, fasteners, fittings &#8211; and the scale of the translation becomes clear. The finished Tu-4 reportedly came out slightly heavier than the B-29, a direct consequence of these substitutions.<\/p>\n<p>This is the grain of truth behind the &#8216;they copied everything blindly&#8217; legend. The Tu-4 was not a perfect clone at all, precisely because the metric conversion forced thousands of small, deliberate engineering decisions that no photocopier could have made.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">The patch that probably never was<\/span><\/p>\n<h4>A legend worth retiring<\/h4>\n<p class=\"sc-tease\">The most-told Tu-4 story claims Soviet engineers faithfully reproduced a repair patch, a bullet hole, or an antenna&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>The most-told Tu-4 story claims Soviet engineers faithfully reproduced a repair patch, a bullet hole, or an antenna scar from one of the interned originals onto every production aircraft. It is a wonderful image of over-literal copying, endlessly repeated in books and online.<\/p>\n<p>It is also almost certainly apocryphal or heavily exaggerated. No reliable primary source documents it, and it sits awkwardly with the well-attested reality that the Tu-4 differed in engines, guns, avionics and materials.<\/p>\n<p>The legend endures because it captures a feeling of truth &#8211; the programme really was an extraordinary act of copying. But the specific anecdote belongs in the folklore column, not the history column.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">Soviet engines, Soviet guns<\/span><\/p>\n<h4>Where the Tu-4 genuinely diverged<\/h4>\n<p class=\"sc-tease\">Under the cowlings sat four Shvetsov ASh-73TK radials, a Soviet engine unrelated to the B-29&#8217;s Wright R-3350. Matching&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>Under the cowlings sat four Shvetsov ASh-73TK radials, a Soviet engine unrelated to the B-29&#8217;s Wright R-3350. Matching that unfamiliar powerplant to the copied airframe, complete with turbo-superchargers for high-altitude power, was one of the hardest parts of the whole job.<\/p>\n<p>The defensive armament was uprated too: ten 23 mm cannon replaced the American .50-calibre machine guns, giving heavier hitting power and longer range in the remote-controlled turrets.<\/p>\n<p>Soviet radios, oxygen systems, gunsights and instruments went in as well, and the bombing radar was derived from the American AN\/APQ-13 carried by the interned aircraft. The Tu-4 looked like a B-29 from fifty metres, but it was a Soviet aircraft under the skin.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">First flight, May 1947<\/span><\/p>\n<h4>A B-29 shape over Soviet skies<\/h4>\n<p class=\"sc-tease\">The first Tu-4 lifted off on 19 May 1947, only about two years after the programme began &#8211; a remarkable pace for an&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>The first Tu-4 lifted off on 19 May 1947, only about two years after the programme began &#8211; a remarkable pace for an aircraft of such complexity built almost from scratch by a new supply chain.<\/p>\n<p>To Western observers who later saw it, the aircraft was uncanny: the same slender fuselage, the same glazed greenhouse nose, the same four podded engines and tall fin.<\/p>\n<p>When three Tu-4s flew over the 1947 Aviation Day display at Tushino alongside the Tu-70 airliner derivative, foreign attaches realised in a single afternoon that the Soviet Union had, in effect, reproduced America&#8217;s most advanced bomber &#8211; and could now build it in numbers.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">Carrying the bomb<\/span><\/p>\n<h4>The Tu-4A and the deterrent<\/h4>\n<p class=\"sc-tease\">The nuclear-capable Tu-4A was modified with a heated, insulated bomb bay and the release and arming gear for an atomic&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>The nuclear-capable Tu-4A was modified with a heated, insulated bomb bay and the release and arming gear for an atomic weapon. It was the delivery half of a deterrent whose other half, the bomb itself, the USSR first tested in 1949.<\/p>\n<p>In October 1951 a Tu-4 became the first Soviet aircraft to drop a live nuclear bomb, the RDS-3, in a weapons trial &#8211; a milestone in the militarisation of the Soviet atomic programme.<\/p>\n<p>For a few crucial years the Tu-4 was the physical embodiment of the Soviet nuclear deterrent, even though planners understood it could not fly a two-way mission to the United States and back.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">The range problem<\/span><\/p>\n<h4>Why the Tu-4 could not threaten America both ways<\/h4>\n<p class=\"sc-tease\">With a combat radius built around a roughly 5,400 km range, the Tu-4 could reach the northern United States only on a&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>With a combat radius built around a roughly 5,400 km range, the Tu-4 could reach the northern United States only on a one-way trajectory. Soviet planners studied exactly that grim option, including the possibility of crews not returning.<\/p>\n<p>The shortfall was strategic, not merely technical: a deterrent that cannot strike the adversary&#8217;s homeland and come back is a blunt instrument.<\/p>\n<p>The gap drove the next generation of Soviet bombers &#8211; the longer-ranged Tu-80 and the large Tu-85 pistons, and ultimately the intercontinental Tu-95 turboprop that still patrols today.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">Flying laboratory<\/span><\/p>\n<h4>Refuelling, parasites and missiles<\/h4>\n<p class=\"sc-tease\">The Tu-4 fleet became a testbed for ideas the USSR would need for a true intercontinental force. Aircraft trialled&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>The Tu-4 fleet became a testbed for ideas the USSR would need for a true intercontinental force. Aircraft trialled wingtip-to-wingtip and hose-and-drogue air-to-air refuelling techniques that later matured on jet bombers.<\/p>\n<p>The extraordinary Burlaki experiments saw a Tu-4 tow a fighter behind it on a cable to extend the escort&#8217;s reach &#8211; a literal parasite-fighter concept.<\/p>\n<p>Others were adapted to carry early cruise missiles such as the KS-1 Komet and to launch and direct drones, turning the copied bomber into a springboard for genuinely new Soviet weapons.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">China&#8217;s Superfortress<\/span><\/p>\n<h4>Two decades of PLAAF service<\/h4>\n<p class=\"sc-tease\">From 1953 the Soviet Union handed Tu-4s to China &#8211; an initial batch of around ten, later added to &#8211; where they became&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>From 1953 the Soviet Union handed Tu-4s to China &#8211; an initial batch of around ten, later added to &#8211; where they became the backbone of the young People&#8217;s Liberation Army Air Force&#8217;s strategic bomber arm.<\/p>\n<p>Chinese Tu-4s flew bombing, maritime reconnaissance, transport and survey missions, and reportedly supported operations over remote border and western regions where their range and payload were invaluable.<\/p>\n<p>They stayed in service far longer than in the USSR, soldiering on into the late 1980s and outliving the aircraft&#8217;s front-line career in its country of origin by three decades.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">KJ-1 and the drone carriers<\/span><\/p>\n<h4>China&#8217;s radical conversions<\/h4>\n<p class=\"sc-tease\">China turned at least one Tu-4 into the KJ-1, its first airborne-early-warning aircraft, mounting a large rotating&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>China turned at least one Tu-4 into the KJ-1, its first airborne-early-warning aircraft, mounting a large rotating radar dome above the fuselage and re-engining the airframe with Ivchenko AI-20 turboprops for the extra power and reliability the radar demanded.<\/p>\n<p>The KJ-1&#8217;s radar struggled with ground clutter and the type never entered squadron service, but the programme taught Chinese engineers lessons that fed directly into the country&#8217;s later, successful AEW aircraft.<\/p>\n<p>Other Chinese Tu-4s carried La-17 target drones under the wings, launching and controlling them in flight &#8211; a role that kept the reverse-engineered Superfortress flying well into the jet-and-missile age.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">The civil Superfortress<\/span><\/p>\n<h4>The Tu-70 and Tu-75<\/h4>\n<p class=\"sc-tease\">Almost as soon as the bomber flew, Tupolev&#8217;s bureau adapted its wings, engines, tail and landing gear to an entirely&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>Almost as soon as the bomber flew, Tupolev&#8217;s bureau adapted its wings, engines, tail and landing gear to an entirely new, wide fuselage to create the Tu-70, a pressurised airliner intended to seat dozens of passengers.<\/p>\n<p>A military transport version, the Tu-75, followed with a rear cargo ramp. Neither reached production &#8211; the post-war USSR had other priorities and other transport designs &#8211; but both proved how versatile the copied airframe had become in Soviet hands.<\/p>\n<p>The exercise also gave Tupolev valuable experience in large pressurised-fuselage design that would inform later Soviet airliners.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">The ultimate piston bomber<\/span><\/p>\n<h4>The Tu-80 and Tu-85<\/h4>\n<p class=\"sc-tease\">The Tu-4&#8217;s range problem was never going to be solved by tinkering, so Tupolev built bigger. The Tu-80 refined the&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>The Tu-4&#8217;s range problem was never going to be solved by tinkering, so Tupolev built bigger. The Tu-80 refined the design, and the much larger Tu-85 stretched the concept to its limit &#8211; a genuinely intercontinental piston-engined bomber able to reach the United States and return.<\/p>\n<p>Both flew as prototypes and both were superb pistons. But they arrived exactly as the jet and turboprop age dawned, and neither entered production.<\/p>\n<p>The lesson was clear: the future belonged to the jet Tu-16 and the turboprop Tu-95, not to ever-larger radials. The Tu-85 is remembered as the magnificent end of a line the Tu-4 had begun.<\/p>\n<\/div>\n<\/details>\n<details class=\"scard\">\n<summary><span class=\"sc-plus\">+<\/span><span class=\"sc-tag\">Survivors<\/span><\/p>\n<h4>Where to see a Tu-4 today<\/h4>\n<p class=\"sc-tease\">Only a handful of Tu-4s survive, and none is airworthy. The best-known sits at the Central Air Force Museum at Monino,&#8230;<\/p>\n<\/summary>\n<div class=\"sc-more\">\n<p>Only a handful of Tu-4s survive, and none is airworthy. The best-known sits at the Central Air Force Museum at Monino, near Moscow, among the most complete collection of Soviet strategic aircraft anywhere.<\/p>\n<p>The China Aviation Museum at Datangshan, north of Beijing, preserves more than one Tu-4, including airframes connected to China&#8217;s early-warning and drone experiments.<\/p>\n<p>Standing beside one of these aircraft is the clearest way to grasp the Tu-4 story: the shape is pure B-29, yet everything about how it came to exist is pure Cold War.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sec alt\">\n<div class=\"wrap\">\n<p class=\"kicker\">Photo Gallery<\/p>\n<h2>Tupolev Tu-4 in photographs<\/h2>\n<p class=\"lead\">Every image below is a genuine Tu-4, credited to its photographer. Click any photo to enlarge.<\/p>\n<div class=\"caro\">\n<div class=\"nav\"><button onclick=\"this.closest('.caro').querySelector('.galtrack').scrollBy({left:-712,behavior:'smooth'})\" aria-label=\"Scroll left\">&#8249;<\/button><button onclick=\"this.closest('.caro').querySelector('.galtrack').scrollBy({left:712,behavior:'smooth'})\" aria-label=\"Scroll right\">&#8250;<\/button><\/div>\n<div class=\"galtrack\">\n<figure class=\"galfig\"><img data-opt-id=292566684  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:1024\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-china-aviation-museum-datangshan.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%201024%22%20width%3D%221536%22%20height%3D%221024%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%221024%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" data-full=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:1024\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-china-aviation-museum-datangshan.jpg\" alt=\"Tupolev Tu-4 photograph\" loading=\"lazy\"><figcaption><b>China Aviation Museum, Datangshan.<\/b> A former PLAAF Tu-4 preserved north of Beijing. Photo: calflier001, CC BY-SA 2.0, via Wikimedia Commons.<\/figcaption><\/figure>\n<figure class=\"galfig\"><img data-opt-id=2103560223  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-soviet-air-force.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" data-full=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-soviet-air-force.jpg\" alt=\"Tupolev Tu-4 photograph\" loading=\"lazy\"><figcaption><b>Soviet Long-Range Aviation.<\/b> A Tu-4 in Soviet markings. Photo: Dmitry Avdeev, CC BY-SA 3.0, via Wikimedia Commons.<\/figcaption><\/figure>\n<figure class=\"galfig\"><img data-opt-id=1840791157  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:1024\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-monino-nose-turret.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%201024%22%20width%3D%221536%22%20height%3D%221024%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%221024%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" data-full=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:1024\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-monino-nose-turret.jpg\" alt=\"Tupolev Tu-4 photograph\" loading=\"lazy\"><figcaption><b>The glazed nose.<\/b> The Tu-4&#8217;s fully-glazed nose mirrors the B-29 almost exactly. Monino. Photo: Clemens Vasters, CC BY 2.0, via Wikimedia Commons.<\/figcaption><\/figure>\n<figure class=\"galfig\"><img data-opt-id=1865460540  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:1024\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-monino-engines.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%201024%22%20width%3D%221536%22%20height%3D%221024%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%221024%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" data-full=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:1024\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-monino-engines.jpg\" alt=\"Tupolev Tu-4 photograph\" loading=\"lazy\"><figcaption><b>Four radial engines.<\/b> Wing and Shvetsov ASh-73TK radials, the Soviet powerplants that replaced the B-29&#8217;s Wright R-3350. Monino. Photo: Clemens Vasters, CC BY 2.0, via Wikimedia Commons.<\/figcaption><\/figure>\n<figure class=\"galfig\"><img data-opt-id=1729706094  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1440\/h:1080\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-preserved-museum.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%201152%22%20width%3D%221536%22%20height%3D%221152%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%221152%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" data-full=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1440\/h:1080\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-preserved-museum.jpg\" alt=\"Tupolev Tu-4 photograph\" loading=\"lazy\"><figcaption><b>Preserved airframe.<\/b> A Tu-4 on museum display. Photo: Triple-green, CC BY-SA 2.0, via Wikimedia Commons.<\/figcaption><\/figure>\n<figure class=\"galfig\"><img data-opt-id=1903752000  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1440\/h:1080\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-chinese-cruise-missile-carrier.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%201152%22%20width%3D%221536%22%20height%3D%221152%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%221152%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" data-full=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1440\/h:1080\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-chinese-cruise-missile-carrier.jpg\" alt=\"Tupolev Tu-4 photograph\" loading=\"lazy\"><figcaption><b>Chinese conversion.<\/b> A Chinese Tu-4 modified to carry drones \/ cruise missiles beneath the wings. Photo: Triple-green, CC BY-SA 2.0, via Wikimedia Commons.<\/figcaption><\/figure>\n<figure class=\"galfig\"><img data-opt-id=772107115  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:862\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-display.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%20862%22%20width%3D%221536%22%20height%3D%22862%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%22862%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" data-full=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:862\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-display.jpg\" alt=\"Tupolev Tu-4 photograph\" loading=\"lazy\"><figcaption><b>Heavy bomber on display.<\/b> The scale of the Tu-4 is clear alongside visitors. Photo: Ronidong, CC BY-SA 4.0, via Wikimedia Commons.<\/figcaption><\/figure>\n<figure class=\"galfig\"><img data-opt-id=592226579  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-versus-b-29-comparison.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" data-full=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/tupolev-tu-4-versus-b-29-comparison.jpg\" alt=\"Tupolev Tu-4 photograph\" loading=\"lazy\"><figcaption><b>Tu-4 and B-29 compared.<\/b> The Soviet copy (top) beside the American original. Public domain, via Wikimedia Commons.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Video<\/p>\n<h2>Watch: how the Soviets reverse-engineered the B-29<\/h2>\n<div class=\"vwrap\"><iframe src=\"https:\/\/www.youtube.com\/embed\/BVP_elhMz-A\" title=\"How the Soviets Reverse-Engineered the B-29 Superfortress\" loading=\"lazy\" allowfullscreen><\/iframe><\/div>\n<p class=\"vcap\">&#8220;How the Soviets Reverse-Engineered the B-29 Superfortress&#8221; by Paper Skies &#8211; an authoritative aviation-history documentary with more than 1.28 million views, covering the interned bombers, Stalin&#8217;s order and the making of the Tu-4.<\/p>\n<\/div>\n<\/section>\n<section class=\"sec alt\">\n<div class=\"wrap\">\n<p class=\"kicker\">Operations Overview<\/p>\n<h2>Where the Tupolev Tu-4 flew<\/h2>\n<p class=\"lead\">The Tu-4 had only two operators in its career &#8211; the Soviet Union that created it and the China that flew it longest. The map below shows origin and Cold-War service, Chinese export operations, and where survivors are preserved today.<\/p>\n<p>That short operator list is itself part of the story. Unlike many Cold-War aircraft that were exported widely, the Tu-4 was a closely-held strategic asset, transferred only to the USSR&#8217;s most important early ally. Toggle the categories below to see how the same two countries fill different roles: the Soviet Union as designer, manufacturer and front-line operator, and China as the long-serving export operator and the boldest modifier of the type.<\/p>\n<div id=\"tu4-map-widget\" style=\"font-family:'Gilroy semiBold','Gilroy regular',Helvetica,Arial,Lucida,sans-serif;max-width:1080px;width:100%;\">\n<div id=\"tu4-map-container\" style=\"width:100%;position:relative\"><svg id=\"tu4-map-svg\" style=\"width:100%;height:auto;display:block\"><\/svg><\/p>\n<div id=\"tu4-tooltip\" style=\"position:fixed;background:#1a1a2e;color:#fff;padding:10px 16px;font-size:13px;font-weight:400;letter-spacing:.3px;pointer-events:auto;opacity:0;transition:opacity .15s;z-index:1000;max-width:360px;line-height:1.5\"><\/div>\n<\/div>\n<div id=\"tu4-controls\" style=\"display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-start;margin-top:12px;\"><button class=\"tu4-toggle active\" data-cat=\"origin\" data-full=\"Origin &#038; Manufacturer\" data-short=\"Origin\" style=\"display:flex;align-items:center;gap:6px;padding:8px 12px;border:2px solid #5C91FF;background:#fff;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;color:#1a1a2e;white-space:nowrap;transition:all .25s\"><\/p>\n<div style=\"width:14px;height:14px;flex-shrink:0;background:#5C91FF\"><\/div>\n<p><span class=\"tu4-label\">Origin &amp; Manufacturer<\/span><span class=\"tu4-check\" style=\"font-size:10px;opacity:1\">&#10003;<\/span><\/button><button class=\"tu4-toggle active\" data-cat=\"service\" data-full=\"Cold War Strategic Service\" data-short=\"Service\" style=\"display:flex;align-items:center;gap:6px;padding:8px 12px;border:2px solid #6B8E23;background:#fff;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;color:#1a1a2e;white-space:nowrap;transition:all .25s\"><\/p>\n<div style=\"width:14px;height:14px;flex-shrink:0;background:linear-gradient(135deg,#4A6741 25%,#6B8E23 25%,#6B8E23 50%,#556B2F 50%,#556B2F 75%,#8B9D77 75%);background-size:8px 8px\"><\/div>\n<p><span class=\"tu4-label\">Cold War Strategic Service<\/span><span class=\"tu4-check\" style=\"font-size:10px;opacity:1\">&#10003;<\/span><\/button><button class=\"tu4-toggle active\" data-cat=\"export\" data-full=\"Export Operator (China)\" data-short=\"China\" style=\"display:flex;align-items:center;gap:6px;padding:8px 12px;border:2px solid #555;background:#fff;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;color:#1a1a2e;white-space:nowrap;transition:all .25s\"><\/p>\n<div style=\"width:14px;height:14px;flex-shrink:0;background:#555\"><\/div>\n<p><span class=\"tu4-label\">Export Operator (China)<\/span><span class=\"tu4-check\" style=\"font-size:10px;opacity:1\">&#10003;<\/span><\/button><button class=\"tu4-toggle active\" data-cat=\"survivor\" data-full=\"Surviving Airframes\" data-short=\"Survivors\" style=\"display:flex;align-items:center;gap:6px;padding:8px 12px;border:2px solid #bbb;background:#fff;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;color:#1a1a2e;white-space:nowrap;transition:all .25s\"><\/p>\n<div style=\"width:14px;height:14px;flex-shrink:0;background:#C0C0C0\"><\/div>\n<p><span class=\"tu4-label\">Surviving Airframes<\/span><span class=\"tu4-check\" style=\"font-size:10px;opacity:1\">&#10003;<\/span><\/button><\/div>\n<div id=\"tu4-count\" style=\"text-align:left;font-size:14px;color:#666;margin-top:12px;line-height:1.7;width:100%\"><\/div>\n<\/div>\n<p class=\"mapnote\">Hover (or tap on mobile) a highlighted country for details. Colour priority runs origin &gt; Cold-War service &gt; export &gt; survivors; a country in several categories shows the highest-priority colour and lists all of them in the tooltip.<\/p>\n<p><script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/d3\/7.8.5\/d3.min.js\"><\/script><script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/topojson\/3.0.2\/topojson.min.js\"><\/script><script src=\"https:\/\/cdn.jsdelivr.net\/npm\/d3-geo-projection@4\/dist\/d3-geo-projection.min.js\"><\/script><div id=\"tu4-data\" data-js=\"(function boot(){
if(typeof d3==='undefined'||typeof topojson==='undefined'||!d3.geoRobinson){setTimeout(boot,150);return;}
var CAT={
origin:{l:'Origin & Manufacturer (USSR / Russia)',c:['Russia']},
service:{l:'Cold War Strategic / Nuclear Service (Soviet Long-Range Aviation)',c:['Russia']},
export:{l:'Export Operator (China, PLAAF)',c:['China']},
survivor:{l:'Surviving Airframes on Display',c:['Russia','China']}
};
Object.keys(CAT).forEach(function(k){CAT[k].s=new Set(CAT[k].c)});
var active={origin:1,service:1,export:1,survivor:1};
var NOTE_INFO={
'Russia':'Reverse-engineered from three interned Boeing B-29s from 1945; built in the USSR (about 847 aircraft) and flown by Soviet Long-Range Aviation as the Soviet Union’s first nuclear-capable strategic bomber, plus a testbed for air-to-air refuelling, cruise-missile carriage and parasite-fighter trials.',
'China':'The People’s Liberation Army Air Force operated Tu-4s from 1953 into the late 1980s, converting some to the KJ-1 airborne-early-warning platform (re-engined with Ivchenko AI-20 turboprops) and to La-17 target-drone carriers.'
};
var FLEET_INFO={
'Russia':'~847 built (1949–1952); first-line service to the late 1950s',
'China':'~25 aircraft (gifted from 1953; retired 1988)'
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})();\"><\/div>\n<p><script>(function(){var el=document.getElementById(\"tu4-data\");var js=decodeURIComponent(escape(atob(el.getAttribute(\"data-js\"))));var sc=document.createElement(\"script\");sc.text=js;document.body.appendChild(sc);})();<\/script><\/div>\n<\/section>\n<section class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Legacy in Numbers<\/p>\n<h2>The Tupolev Tu-4 by the numbers<\/h2>\n<p class=\"lead\">Four figures capture the arc of the Tu-4 story &#8211; from the three salvaged bombers that started it to the Chinese retirement that ended it nearly half a century later.<\/p>\n<div class=\"lgrid\">\n<div class=\"lstat\">\n<div class=\"lv\">3<\/div>\n<div class=\"ll\">Interned B-29s that became the master patterns for the entire programme<\/div>\n<\/div>\n<div class=\"lstat\">\n<div class=\"lv\">~105,000<\/div>\n<div class=\"ll\">Drawings reportedly produced to re-create the aircraft in metric<\/div>\n<\/div>\n<div class=\"lstat\">\n<div class=\"lv\">1951<\/div>\n<div class=\"ll\">Year a Tu-4 dropped the first Soviet air-delivered nuclear weapon<\/div>\n<\/div>\n<div class=\"lstat\">\n<div class=\"lv\">1988<\/div>\n<div class=\"ll\">Year China finally retired its last Tu-4, after nearly four decades<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sec alt\">\n<div class=\"wrap\">\n<p class=\"kicker\">Strategic Context<\/p>\n<h2>The Tupolev Tu-4 and the birth of the nuclear balance<\/h2>\n<p class=\"lead\">For a few years in the early 1950s, the Tu-4 was the aircraft that made Soviet nuclear power real &#8211; and it changed how the Cold War was fought and feared.<\/p>\n<p>In 1945 the United States alone possessed the atomic bomb and, in the B-29, the aircraft to deliver it. That monopoly was brief. The Soviet Union tested its own device in 1949, and with the Tu-4 already in production it suddenly had both halves of an air-delivered nuclear capability. The strategic picture shifted almost overnight from American dominance to the beginnings of a two-sided nuclear confrontation.<\/p>\n<p>The Tu-4&#8217;s limitations shaped that confrontation as much as its capabilities. Because it could reach North America only on a one-way flight, it was a credible threat to allies and forward bases far more than to the American heartland &#8211; which in turn drove both the Soviet push for genuinely intercontinental bombers and the American investment in continental air defence, radar early-warning lines and interceptors. The anxieties of the early 1950s bomber age, and the vast defensive infrastructure they produced, owe a great deal to this single reverse-engineered aircraft.<\/p>\n<p>It is a striking thought: an aircraft that never dropped a bomb in anger did more to shape the Cold War than many that did. The Tu-4&#8217;s role was to exist, to be counted, and to force the other side to plan around it. In the strange logic of deterrence, that was its entire purpose &#8211; and it fulfilled it completely.<\/p>\n<\/div>\n<\/section>\n<section class=\"sec\" id=\"faq\">\n<div class=\"wrap\">\n<p class=\"kicker\">Questions &amp; Answers<\/p>\n<h2>Tupolev Tu-4: frequently asked questions<\/h2>\n<div class=\"qa\">\n<details open>\n<summary>Can I fly in a Tupolev Tu-4?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>No. The Tu-4 was retired from front-line Soviet service in the late 1950s and from the Chinese air force in 1988, and no Tu-4 is airworthy anywhere today. The handful of survivors are static museum exhibits at Monino near Moscow and the China Aviation Museum at Datangshan. MiGFlug does not operate the Tu-4 and it is not a bookable ride. You can, however, fly in several genuine Cold-War military jets today. See the current line-up at https:\/\/migflug.com\/flights-prices\/.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Is the Tupolev Tu-4 really a copy of the B-29?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>Yes, to a remarkable degree. After three Boeing B-29s made emergency landings in the Soviet Far East in 1944 and were interned, Stalin ordered Andrei Tupolev to reverse-engineer the aircraft rather than continue an indigenous design. Soviet engineers reportedly took the bombers apart, re-drew every part in metric units and reproduced the airframe with great fidelity. It is widely described as one of the most ambitious reverse-engineering programmes in history.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Did the Soviets really copy a bullet hole or a repair patch onto the Tu-4?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>That is one of aviation&#8217;s favourite legends, and it is almost certainly apocryphal or heavily exaggerated. The oft-repeated tale that engineers slavishly copied a field repair, a patch or drilled holes to match the originals makes a good story, but there is little solid evidence for it. What is well documented is that the Tu-4 differed from the B-29 in real ways: Soviet Shvetsov ASh-73TK engines instead of the American Wright R-3350, ten 23 mm cannon instead of Browning .50-calibre machine guns, and Soviet materials cut to metric gauges.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>What engines and armament did the Tu-4 use?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>The Tu-4 was powered by four Shvetsov ASh-73TK turbo-supercharged radial piston engines of roughly 2,400 hp each, a Soviet design unrelated to the B-29&#8217;s Wright R-3350. For defence it carried ten 23 mm Nudelman-Suranov NS-23 cannon in remote-controlled turrets, a harder-hitting battery than the B-29&#8217;s .50-calibre machine guns. Figures vary slightly between sources.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Could the Tu-4 drop an atomic bomb?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>Yes. The nuclear-capable Tu-4A gave the Soviet Union its first credible means of delivering an atomic bomb by air, and a Tu-4 was the first Soviet aircraft to drop a live nuclear weapon, in an October 1951 test. It underpinned the early Soviet nuclear deterrent, although its range was too short for a two-way mission against the continental United States, which fuelled the search for longer-legged bombers such as the Tu-95.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>How many Tu-4s were built and when did it fly?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>The Tu-4 first flew on 19 May 1947 and entered service around 1949. Roughly 847 were built between about 1949 and 1952, though production figures vary between sources and some totals include derivatives. It was the most-produced Soviet strategic bomber of its era.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Did China operate the Tu-4?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>Yes, and for a long time. The Soviet Union transferred Tu-4s to China from 1953, and the People&#8217;s Liberation Army Air Force flew them into the late 1980s. China converted some airframes into the KJ-1 airborne-early-warning platform, re-engined others with Ivchenko AI-20 turboprops, and used some as carriers for La-17 target drones, making China one of the type&#8217;s most inventive operators.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>What replaced the Tu-4?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>As jet and turboprop bombers matured, the Tu-4 was rapidly overtaken. The jet-powered Tupolev Tu-16 Badger and the turboprop Tupolev Tu-95 Bear entered service in the mid-1950s and pushed the piston-engined Tu-4 out of the first-line strategic role by the late 1950s, though it lingered in second-line and trials duties for years.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Where can I see a Tu-4 today?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>Surviving Tu-4s are on display at the Central Air Force Museum at Monino, near Moscow, and at the China Aviation Museum at Datangshan, north of Beijing, which preserves more than one airframe. These are the best places to appreciate just how closely the aircraft mirrors the B-29.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Was the Tu-4 used for anything besides bombing?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>Extensively. Beyond its nuclear-strike role the Tu-4 served as a flying laboratory for air-to-air refuelling experiments, the Burlaki parasite-fighter towing trials, early cruise-missile carriage, and drone operations, and it spawned the Tu-70 airliner and Tu-75 transport prototypes as well as the longer-ranged Tu-80 and Tu-85 bomber developments.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>How did the West react when it discovered the Tu-4?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>With considerable alarm. When Tu-4s were displayed over the Tushino Aviation Day parade in 1947, Western observers realised the Soviet Union had reproduced the most advanced bomber of the age and could build it in quantity. Combined with the 1949 Soviet atomic test, the Tu-4 signalled that the USSR now had both a bomb and a way to deliver it, sharpening the emerging Cold War arms race.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Did the Tu-4 ever see combat?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>The Tu-4 is best understood as a deterrent rather than a combat aircraft; the Soviet fleet was never committed to a major bombing campaign. Chinese Tu-4s are reported to have flown operational missions over remote and border regions, but the type&#8217;s real weight was strategic and psychological. Its job was to exist, to be counted, and to make an adversary think twice.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>What did the Tu-4&#8217;s crew of eleven actually do?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>Like the B-29, the Tu-4 was a pressurised aircraft with a large crew spread through connected compartments: two pilots, a navigator, a bombardier in the glazed nose, a flight engineer managing the four radials, a radio operator, and several gunners operating the remote-controlled cannon turrets through sighting stations. A crawl tunnel over the bomb bay linked the forward and rear pressurised sections.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Is the Tu-4 the same as the Tu-95 or the Tu-16?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>No, though they are relatives in the same Tupolev strategic-bomber lineage. The Tu-4 is a piston-engined 1940s design copied from the B-29. The Tu-16 Badger is a swept-wing jet bomber of the mid-1950s, and the Tu-95 Bear is a swept-wing turboprop of the same era with genuine intercontinental range. The Tu-16 and Tu-95 are the aircraft that replaced the Tu-4 in Soviet service.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Why didn&#8217;t the Soviets just design their own bomber instead of copying the B-29?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>They could have, and Tupolev had designs in progress. But an original aircraft meant years of prototyping and risk at the very moment the United States held a monopoly on both the atomic bomb and the means to deliver it. Copying the proven B-29 collapsed the timeline and, as a bonus, forced Soviet industry to master modern aircraft manufacturing across metallurgy, engines and electronics. It was a pragmatic decision to buy time and capability at once.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>How fast and how high could the Tu-4 fly?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>The Tu-4 had a maximum speed of around 558 km\/h (about 347 mph) at altitude and a service ceiling of roughly 11,200 m (about 36,700 ft), broadly comparable to the B-29. These are typical figures for a large piston-engined bomber of the late 1940s; performance fell off with heavy loads and at extreme range, and sources vary slightly on the exact numbers.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>What is the KJ-1, and how is it related to the Tu-4?<span class=\"qp\">+<\/span><\/summary>\n<div class=\"qbody\">\n<p>The KJ-1 was China&#8217;s first airborne-early-warning aircraft, created by mounting a large rotating radar dome on a Tu-4 airframe re-engined with AI-20 turboprops. The radar could not reliably pick targets out of ground clutter and the KJ-1 never entered service, but the experiment gave Chinese engineers foundational experience in airborne radar that informed the country&#8217;s later, successful AEW aircraft.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sec cta\">\n<div class=\"wrap\">\n<p class=\"kicker\" style=\"color:#5C91FF\">You can&#8217;t fly the Tu-4 &#8211; these, you can<\/p>\n<h2>No Tu-4 flies today. But you can still get airborne in a genuine Cold-War jet.<\/h2>\n<p class=\"lead\">The Tu-4 lives on only in museums. If the itch to fly a piece of Cold-War aviation is real, MiGFlug puts you in the cockpit of aircraft that still take to the sky &#8211; from Soviet-built jets to Western classics.<\/p>\n<div class=\"caro\">\n<div class=\"nav\"><button onclick=\"this.closest('.caro').querySelector('.flytrack').scrollBy({left:-640,behavior:'smooth'})\" aria-label=\"Scroll left\">&#8249;<\/button><button onclick=\"this.closest('.caro').querySelector('.flytrack').scrollBy({left:640,behavior:'smooth'})\" aria-label=\"Scroll right\">&#8250;<\/button><\/div>\n<div class=\"flytrack\"><a class=\"flycard\" href=\"https:\/\/migflug.com\/flights-prices\/mig-15-fagot-czech-republic\/\"><img data-opt-id=1736516879  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1200\/h:630\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/06\/migflug-share-1200x630-1.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201200%20630%22%20width%3D%221200%22%20height%3D%22630%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221200%22%20height%3D%22630%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"MiG-15 Fagot\" loading=\"lazy\"><span class=\"fc-b\"><span class=\"fc-t\">MiG-15 Fagot<\/span><span class=\"fc-l\">Czech Republic &#8211; fly a Soviet Cold-War jet<\/span><span class=\"fc-go\">View this flight<\/span><\/span><\/a><a class=\"flycard\" href=\"https:\/\/migflug.com\/flights-prices\/l-39-albatros-florida\/\"><img data-opt-id=1260298417  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2021\/12\/l-39-ewoud-jet-flight-paderborn-2-21.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"L-39 Albatros\" loading=\"lazy\"><span class=\"fc-b\"><span class=\"fc-t\">L-39 Albatros<\/span><span class=\"fc-l\">Florida, USA<\/span><span class=\"fc-go\">View this flight<\/span><\/span><\/a><a class=\"flycard\" href=\"https:\/\/migflug.com\/flights-prices\/f104-starfighter-flight\/\"><img data-opt-id=1736516879  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1200\/h:630\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/06\/migflug-share-1200x630-1.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201200%20630%22%20width%3D%221200%22%20height%3D%22630%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221200%22%20height%3D%22630%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"F-104 Starfighter\" loading=\"lazy\"><span class=\"fc-b\"><span class=\"fc-t\">F-104 Starfighter<\/span><span class=\"fc-l\">The missile with a man in it<\/span><span class=\"fc-go\">View this flight<\/span><\/span><\/a><a class=\"flycard\" href=\"https:\/\/migflug.com\/flights-prices\/l-39-california-usa\/\"><img data-opt-id=350543110  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2021\/12\/fighter-jet-rides-in-the-us-02-21.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"L-39 Albatros\" loading=\"lazy\"><span class=\"fc-b\"><span class=\"fc-t\">L-39 Albatros<\/span><span class=\"fc-l\">California, USA<\/span><span class=\"fc-go\">View this flight<\/span><\/span><\/a><a class=\"flycard\" href=\"https:\/\/migflug.com\/flights-prices\/t-33-in-canada\/\"><img data-opt-id=1736516879  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1200\/h:630\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/06\/migflug-share-1200x630-1.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201200%20630%22%20width%3D%221200%22%20height%3D%22630%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221200%22%20height%3D%22630%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"T-33 Shooting Star\" loading=\"lazy\"><span class=\"fc-b\"><span class=\"fc-t\">T-33 Shooting Star<\/span><span class=\"fc-l\">Canada<\/span><span class=\"fc-go\">View this flight<\/span><\/span><\/a><a class=\"flycard\" href=\"https:\/\/migflug.com\/flights-prices\/s-211-jet-flight-munich\/\"><img data-opt-id=339640955  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2025\/06\/s.211-main-mobile-1.png\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"SIAI-Marchetti S-211\" loading=\"lazy\"><span class=\"fc-b\"><span class=\"fc-t\">SIAI-Marchetti S-211<\/span><span class=\"fc-l\">Munich, Germany<\/span><span class=\"fc-go\">View this flight<\/span><\/span><\/a><\/div>\n<\/div>\n<p style=\"margin-top:18px\"><a href=\"https:\/\/migflug.com\/flights-prices\/\" style=\"color:#5C91FF;font-family:'Gilroy semiBold',Helvetica,Arial,sans-serif;font-size:17px\">See all MiGFlug jet flights and prices<\/a><\/p>\n<\/div>\n<\/section>\n<section class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Legacy &amp; Assessment<\/p>\n<h2>What the Tupolev Tu-4 really achieved<\/h2>\n<p class=\"lead\">Judged as an aircraft, the Tu-4 was already obsolescent when it entered service. Judged as a strategic and industrial project, it was one of the most consequential aircraft the Soviet Union ever built.<\/p>\n<p>It is easy to be dismissive of a copy. The Tu-4 broke no performance records, pioneered no new configuration, and was overtaken within a decade by the jets and turboprops that followed it. Had the Soviet Union set out in 1945 to build the most advanced bomber it could imagine, the Tu-4 is not what it would have produced.<\/p>\n<p>But that was never the point. The Tu-4 gave the USSR, in the shortest possible time and with the least possible risk, a fleet of modern strategic bombers capable of carrying the atomic bomb. It closed a dangerous capability gap at the dawn of the nuclear age, and in doing so it helped establish the uneasy balance of deterrence that defined the Cold War. Whatever one thinks of that balance, the Tu-4 was a load-bearing part of it.<\/p>\n<p>Its deeper legacy was industrial. To reproduce the B-29, the Soviet Union had to raise its whole aviation sector &#8211; metallurgy, electronics, engines, precision manufacturing and, above all, the discipline of building a complex aircraft to a single coherent standard in large numbers. Those capabilities did not retire with the Tu-4. They underwrote the Tu-16, the Tu-95 and the Soviet aircraft industry that followed. In that sense Stalin&#8217;s blunt order to copy the B-29 exactly bought far more than a bomber; it bought a modern aerospace industry.<\/p>\n<p>And there is the sheer strangeness of the story &#8211; a tribute, in its way, to the aircraft it copied. The B-29 was so good that a rival superpower judged the fastest route to modernity was to reproduce it bolt for bolt. Few aircraft have ever received a stranger, or greater, compliment.<\/p>\n<\/div>\n<\/section>\n<section class=\"sec alt\">\n<div class=\"wrap\">\n<p class=\"kicker\">Related Aircraft<\/p>\n<h2>Explore related aircraft<\/h2>\n<div class=\"relgrid\"><a class=\"relcard\" href=\"https:\/\/migflug.com\/aircraft\/b-29-superfortress\/\"><img data-opt-id=1966159510  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/07\/boeing-b-29-superfortress-hero.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Boeing B-29 Superfortress\" loading=\"lazy\"><span class=\"rc-b\"><span class=\"rc-t\">Boeing B-29 Superfortress<\/span><span class=\"rc-d\">The American original the Tu-4 was reverse-engineered from, and the aircraft that dropped the first atomic bombs.<\/span><\/span><\/a><a class=\"relcard\" href=\"https:\/\/migflug.com\/aircraft\/tu-95-bear\/\"><img data-opt-id=1865263801  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/07\/tupolev-tu-95-bear-in-flight.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Tupolev Tu-95 Bear\" loading=\"lazy\"><span class=\"rc-b\"><span class=\"rc-t\">Tupolev Tu-95 Bear<\/span><span class=\"rc-d\">The intercontinental turboprop that gave the USSR the transatlantic reach the Tu-4 never had, and still flies today.<\/span><\/span><\/a><a class=\"relcard\" href=\"https:\/\/migflug.com\/aircraft\/tu-16-badger\/\"><img data-opt-id=466906906  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/07\/tupolev-tu-16-badger-in-flight-scaled.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Tupolev Tu-16 Badger\" loading=\"lazy\"><span class=\"rc-b\"><span class=\"rc-t\">Tupolev Tu-16 Badger<\/span><span class=\"rc-d\">The jet bomber that pushed the piston-engined Tu-4 out of the Soviet first-line strategic role in the mid-1950s.<\/span><\/span><\/a><\/div>\n<\/div>\n<\/section>\n<section class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Sources &amp; Further Reading<\/p>\n<h2>Sources &amp; further reading<\/h2>\n<div class=\"srcgrid\">\n<div class=\"src\"><b>Central Air Force Museum, Monino<\/b><span>Home of a preserved Tu-4 and the definitive collection of Soviet strategic bombers.<\/span><\/div>\n<div class=\"src\"><b>China Aviation Museum, Datangshan<\/b><span>Preserves multiple Tu-4 airframes, including examples tied to China&#8217;s AEW and drone experiments.<\/span><\/div>\n<div class=\"src\"><b>National Museum of the United States Air Force<\/b><span>Authoritative reference on the Boeing B-29 Superfortress from which the Tu-4 was copied.<\/span><\/div>\n<div class=\"src\"><b>Yefim Gordon and Vladimir Rigmant, &#8216;Tupolev Tu-4: Soviet Superfortress&#8217;<\/b><span>The standard English-language monograph on the aircraft&#8217;s development and service.<\/span><\/div>\n<div class=\"src\"><b>Von Hardesty, &#8216;Made in the USSR: The Soviet B-29&#8217;<\/b><span>Air &amp; Space \/ Smithsonian account of the reverse-engineering programme.<\/span><\/div>\n<div class=\"src\"><b>Steve Zaloga, on Soviet nuclear forces<\/b><span>Context on the Tu-4&#8217;s place in the early Soviet atomic deterrent.<\/span><\/div>\n<div class=\"src\"><b>KJ-1 AEWC programme histories<\/b><span>Sources documenting China&#8217;s radar-dome Tu-4 conversion and its lessons for later AEW aircraft.<\/span><\/div>\n<div class=\"src\"><b>Tony Buttler and Yefim Gordon, Soviet secret projects<\/b><span>Background on the Tu-70, Tu-75, Tu-80 and Tu-85 developments of the airframe.<\/span><\/div>\n<div class=\"src\"><b>Air &amp; Space \/ Smithsonian magazine<\/b><span>Feature reporting on the interned B-29s and the reverse-engineering effort.<\/span><\/div>\n<div class=\"src\"><b>Imperial War Museums<\/b><span>Reference material on the strategic bombing context of the late Second World War and early Cold War.<\/span><\/div>\n<div class=\"src\"><b>Paul Stewart Aviation and Paper Skies documentaries<\/b><span>Well-regarded aviation-history video treatments of the Tu-4 and the Chinese KJ-1.<\/span><\/div>\n<div class=\"src\"><b>MiGFlug Afterburner magazine<\/b><span>MiGFlug&#8217;s own long-form features on Cold-War aircraft and jet-flight experiences.<\/span><\/div>\n<\/div>\n<\/div>\n<\/section>\n<div id=\"tu4-lb\" data-js=\"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\"><\/div>\n<p><script>(function(){var el=document.getElementById(\"tu4-lb\");var js=decodeURIComponent(escape(atob(el.getAttribute(\"data-js\"))));var sc=document.createElement(\"script\");sc.text=js;document.body.appendChild(sc);})();<\/script><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Tupolev Tu-4 The Soviet Union&#8217;s first modern strategic bomber was not a Soviet design at all: it was a bolt-for-bolt reverse-engineered copy of the American Boeing B-29 Superfortress, and it carried the USSR&#8217;s first atomic deterrent aloft. 1947 First flight (19 May) ~847 Built (figures vary) 5,400 km Range with bomb load 4 x radial [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":21647,"parent":15960,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"editor_notices":[],"footnotes":""},"class_list":["post-21645","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tupolev Tu-4 - History, Specs &amp; 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