{"id":18289480,"date":"2026-08-30T23:05:52","date_gmt":"2026-08-30T21:05:52","guid":{"rendered":"https:\/\/migflug.com\/afterburner\/tupolev-tu-4-stalin-b-29-superfortress-clone\/"},"modified":"2026-09-04T08:45:36","modified_gmt":"2026-09-04T06:45:36","slug":"tupolev-tu-4-stalin-b-29-superfortress-clone","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/tupolev-tu-4-stalin-b-29-superfortress-clone\/","title":{"rendered":"Tupolev Tu-4: Stalin&#8217;s Bolt-for-Bolt B-29 Superfortress Clone"},"content":{"rendered":"<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style>\n<!-- mfsh:top -->\n\n<style>\n.mfsh-trigger{display:inline-flex;align-items:center;gap:10px;height:44px;padding:0 18px;margin:0 0 26px;border:2px solid #0F1720;background:#fff;color:#0F1720;font-family:inherit;font-size:14px;font-weight:700;line-height:1;letter-spacing:0;text-transform:none;cursor:pointer;box-shadow:none;transition:background .15s,color 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Red stars marked the wings, but sharp eyes could still read two English words on the nose: &ldquo;Ramp Tramp.&rdquo; It was a Boeing B-29 Superfortress, one of three interned by the Soviets after emergency landings in the Far East, and Joseph Stalin wanted it copied. Exactly.<\/p>\r\n<p>Twice the United States had refused to hand over B-29s under Lend-Lease. Now fate had delivered three of them into Soviet hands, and Stalin gave Andrei Tupolev an order that was as simple as it was ruthless: duplicate the Superfortress, down to the last rivet, in as short a time as possible. The result was the Tupolev Tu-4 &mdash; and when the West finally saw it, the reaction bordered on panic.<\/p>\r\n<p>What followed was one of the most staggering feats of industrial reverse-engineering in history: 105,000 parts measured and cloned, 900-plus factories mobilised, and a finished bomber that weighed barely one percent more than the original.<\/p>\r\n\r\n<div style=\"background:#f5f5f5;padding:20px 24px;margin:24px 0;border-radius:8px;font-size:15px;line-height:1.8\"><p style=\"margin:0 0 10px;font-weight:700;font-size:17px\">Quick Facts<\/p><strong>Type:<\/strong> Piston-engined strategic bomber; reverse-engineered copy of the Boeing B-29 Superfortress<br><strong>First flight \/ service:<\/strong> 19 May 1947 (test pilot Nikolai Rybko); large-scale service from 1949<br><strong>Number built:<\/strong> 847 (production 1949-1952)<br><strong>Powerplant \/ crew:<\/strong> 4 Shvetsov ASh-73TK 18-cylinder radials; crew of 11<br><strong>Key spec:<\/strong> Range ~5,400 km; NATO name &ldquo;Bull&rdquo;; first Soviet nuclear-bomb carrier (Tu-4A)<br><strong>Fate:<\/strong> Phased out of Soviet service in the 1960s; last Chinese Tu-4 retired 1988; survivor at Monino<\/div>\r\n\r\n<h2 style=\"padding-top:22px\">Three B-29s and a &ldquo;gift from God&rdquo;<\/h2>\r\n<p>By the spring of 1945 the Soviet air force had grown into the most lethal tactical air arm of the war, with as many as 15,000 aircraft. Yet strategically it was almost naked &mdash; perhaps 32 serviceable four-engined bombers, all of them the outdated Petlyakov Pe-8. When three B-29s came down on Soviet soil in 1944 after raids on Japan, they were interned under the Soviet-Japanese Neutrality Pact and never returned.<\/p>\r\n<p>Three repairable Superfortresses were flown to Moscow and handed to the Tupolev design bureau. One was carefully dismantled, one was kept flying as a reference, and one was preserved untouched as a master pattern. Stalin cancelled Tupolev&rsquo;s own promising long-range design, the Samolet 64, to force the copy through. Tupolev, jailed by Stalin only years earlier, accepted the assignment reluctantly. He had no choice.<\/p>\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/08\/tupolev-tu-4-china.jpg\" alt=\"\" style=\"width:100%;height:auto;max-width:100%;display:block;border-radius:6px\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">A surviving Tu-4 at the Datangshan China Aviation Museum near Beijing &mdash; the Superfortress clone flew longest in Chinese service. Photo: Wikimedia Commons.<\/figcaption><\/figure>\r\n<h2 style=\"padding-top:22px\">Cloning the impossible<\/h2>\r\n<p>The devil lived in the units. American sheet aluminium was gauged in fractions of an inch; the USSR worked in millimetres, and no Soviet plant could roll metal to the B-29&rsquo;s exact 1\/16-inch skin. Rather than lose months converting everything, Tupolev varied the Tu-4&rsquo;s skin thickness between 0.8 and 1.8 mm &mdash; a change that actually strengthened the structure in places. Engines, cannon, radios and the identification gear were swapped for Soviet equipment; almost everything else was faithfully reproduced.<\/p>\r\n<p>The discipline was total. Tupolev even ordered a repair patch and the exact interior paint scheme copied, partly to satisfy the secret police that no one had disobeyed Stalin&rsquo;s order. The effort analysed some 105,000 parts and generated around 40,000 drawings. Astonishingly, the prototype came out just 340 kg &mdash; under one percent &mdash; heavier than a genuine B-29.<\/p>\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #1565c0;padding:20px 22px;margin:18px 0 24px;border-radius:0 8px 8px 0;font-size:16px;line-height:1.7\"><em>&ldquo;the dominant genes were Boeing&rsquo;s, and the recessive genes were Tupolev&rsquo;s.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Von Hardesty<\/strong> &mdash; aviation historian, &ldquo;Made in the U.S.S.R.&rdquo;, Air &amp; Space\/Smithsonian, 2001<\/div><\/div>\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/BVP_elhMz-A\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n<h2 style=\"padding-top:22px\">The Tushino shock<\/h2>\r\n<p>The Tu-4 first flew on 19 May 1947 in the hands of test pilot Nikolai Rybko. The public reveal came that August at the Tushino Aviation Day flypast. Western attach&eacute;s watched three big bombers roar overhead and shrugged &mdash; obviously the three long-lost interned B-29s. Then a fourth aircraft appeared, followed by a passenger derivative. The penny dropped: the Soviets had cloned the Superfortress and were building it in numbers.<\/p>\r\n<p>Entry into service threw the US Air Force into alarm. The Tu-4 had the range to reach targets deep inside the United States on a one-way mission, and in 1949 a Tu-4A dropped a Soviet atomic bomb. It was never a true intercontinental weapon, but it did not need to be: it handed Moscow a credible strategic bomber years ahead of schedule and jump-started the entire Soviet heavy-bomber programme.<\/p>\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/08\/tupolev-tu-4.jpg\" alt=\"\" style=\"width:100%;height:auto;max-width:100%;display:block;border-radius:6px\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">The Tupolev Tu-4 &ldquo;Bull&rdquo;: from nose to tail, a near-exact replica of the Boeing B-29. Photo: Wikimedia Commons.<\/figcaption><\/figure>\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #5C91FF;padding:20px 22px;margin:18px 0 24px;border-radius:0 8px 8px 0;font-size:16px;line-height:1.7\"><em>&ldquo;a gift from God&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Vasiliy Reshetnikov<\/strong> &mdash; Soviet Long-Range Aviation bomber pilot, on the interned B-29s (Air &amp; Space\/Smithsonian, 2001)<\/div><\/div>\r\n<h2 style=\"padding-top:22px\">Twilight of the Bull<\/h2>\r\n<p>NATO christened the aircraft &ldquo;Bull.&rdquo; A total of 847 were built before Soviet production ended in 1952. From 1954 the type was steadily displaced by the jet Tu-16 and the turboprop Tu-95 &mdash; both, tellingly, Tupolev designs that grew out of the Tu-4 experience.<\/p>\r\n<p>Ten Tu-4s were gifted to China in 1953, and it was there the type soldiered on longest, some re-engined with turboprops and one converted into China&rsquo;s first airborne-early-warning testbed. The last Chinese Tu-4 was retired in 1988. A lone example still stands at the Monino museum outside Moscow &mdash; the ghost of the American bomber that founded Soviet strategic air power.<\/p>\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/5mXIRIurWHU\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/8BvcCbrW9so\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n<p style=\"font-size:14px;color:#777\"><em>Sources: Wikipedia; Von Hardesty, &ldquo;Made in the U.S.S.R.&rdquo; (Air &amp; Space\/Smithsonian, 2001); Air &amp; Space Forces Magazine; National Museum of the USAF; Gordon &amp; Rigmant, &ldquo;Tupolev Tu-4: Soviet Superfortress&rdquo;.<\/em><\/p>\n<!-- mfsh:bottom -->\n\n<button type=\"button\" class=\"mfsh-trigger mfsh-bottom\" data-mfsh-placement=\"bottom\" aria-haspopup=\"dialog\"><svg><use href=\"#mfsh-i-share\"\/><\/svg>Share this story<\/button>\n\n<!-- \/mfsh:bottom -->\n\r\n\n<style>.mfq{margin:34px 0 8px}.mfq h2{font:26px\/1.3 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117;padding-top:22px;margin:0 0 6px}.mfq .qa details{border-top:1px solid #5C91FF;margin:0;padding:0}.mfq .qa details:last-of-type{border-bottom:1px solid #e2e7ee}.mfq .qa summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;font:18px\/1.7 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117}.mfq .qa summary::-webkit-details-marker{display:none}.mfq .qa summary::after{content:\"+\";font:24px Helvetica,sans-serif;color:#3568e0;flex:0 0 auto}.mfq .qa details[open] summary::after{content:\"\\2013\"}.mfq .qa details:hover summary{color:#3568e0}.mfq .qa .a{font:16px\/1.7 \"Gilroy regular\",Helvetica,Arial,sans-serif;color:#454e5e;padding:0 26px 24px}.mfq .qa .a a{color:#3568e0}@media(max-width:680px){.mfq .qa summary{padding:18px 14px;font-size:17px}.mfq .qa .a{padding:0 14px 20px}}<\/style>\n\n\n<section class=\"mfq\"><h2>Frequently Asked Questions<\/h2><div class=\"qa\"><details open><summary>What was the Tupolev Tu-4?<\/summary><div class=\"a\">A Soviet strategic bomber that was a near-exact reverse-engineered copy of the Boeing B-29 Superfortress. It first flew on 19 May 1947 with test pilot Nikolai Rybko, entered large-scale service from 1949, and 847 were built between 1949 and 1952.<\/div><\/details><details><summary>How did the Soviet Union get hold of B-29s?<\/summary><div class=\"a\">Three B-29s made emergency landings in the Soviet Far East and were interned. The United States had twice refused to supply B-29s under Lend-Lease, so when fate delivered three of them, Stalin ordered Andrei Tupolev to duplicate the aircraft exactly.<\/div><\/details><details><summary>How exact was the copy?<\/summary><div class=\"a\">Extraordinarily. Around 105,000 parts were measured and cloned, more than 900 factories were mobilised, and the finished bomber weighed barely one percent more than the original. One of the donor aircraft still carried its English nose art, \"Ramp Tramp\", when Muscovites saw it flying over the city in 1945.<\/div><\/details><details><summary>Why did the Tu-4 alarm the West?<\/summary><div class=\"a\">Because it demonstrated that the Soviet Union could field a strategic bomber capable of reaching distant targets, and that Soviet industry could reproduce advanced American technology at scale in about two years. It was the first Soviet aircraft able to deliver a nuclear weapon at range.<\/div><\/details><details><summary>What engines did the Tu-4 use?<\/summary><div class=\"a\">Four Shvetsov ASh-73TK eighteen-cylinder radials, with a crew of eleven and a range of roughly 5,400 km. Its NATO reporting name was Bull.<\/div><\/details><\/div><\/section>\n\n\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What was the Tupolev Tu-4?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A Soviet strategic bomber that was a near-exact reverse-engineered copy of the Boeing B-29 Superfortress. It first flew on 19 May 1947 with test pilot Nikolai Rybko, entered large-scale service from 1949, and 847 were built between 1949 and 1952.\"}},{\"@type\":\"Question\",\"name\":\"How did the Soviet Union get hold of B-29s?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Three B-29s made emergency landings in the Soviet Far East and were interned. 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Its NATO reporting name was Bull.\"}}]}<\/script><div style=\"background:#f0f4ff;border-left:4px solid #5C91FF;padding:16px 20px;margin:32px 0 8px;border-radius:0 8px 8px 0\"><p style=\"margin:0 0 8px;font-weight:600;color:#333\">Related Posts<\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/tupolev-tu-95-bear-turboprop\/\">Tupolev Tu-95 Bear<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/tupolev-tu-22m-backfire-bomber-history\/\">Tu-22M Backfire: The Soviet Bomber That Won by Being Good Enough<\/a><\/p><\/div>\r\n","protected":false},"excerpt":{"rendered":"<p>Share this story On a June day in 1945, Muscovites watched a giant four-engined bomber bank over a restricted airfield in the city&rsquo;s northeast. Red stars marked the wings, but sharp eyes could still read two English words on the nose: &ldquo;Ramp Tramp.&rdquo; It was a Boeing B-29 Superfortress, one of three interned by the [&hellip;]<\/p>\n","protected":false},"author":27,"featured_media":18288527,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[666,664],"tags":[],"class_list":["post-18289480","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-history-and-legends","category-military-aviation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tupolev Tu-4: Stalin&#039;s Bolt-for-Bolt B-29 Superfortress Clone | MiGFlug<\/title>\n<meta name=\"description\" content=\"How Stalin&#039;s engineers reverse-engineered three interned B-29s into the Tupolev Tu-4, the Soviet Superfortress clone that 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