{"id":20676378,"date":"2026-09-06T20:53:45","date_gmt":"2026-09-06T18:53:45","guid":{"rendered":"https:\/\/migflug.com\/afterburner\/ge-aerospace-derecho-mach-5-hypersonic-testbed-diu-hycat-2026\/"},"modified":"2026-09-06T20:54:08","modified_gmt":"2026-09-06T18:54:08","slug":"ge-aerospace-derecho-mach-5-hypersonic-testbed-diu-hycat-2026","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/de\/ge-aerospace-derecho-mach-5-hypersonic-testbed-diu-hycat-2026\/","title":{"rendered":"GE Aerospace erh\u00e4lt DIU-Auftrag f\u00fcr Mach-5-Derecho-Testgel\u00e4nde"},"content":{"rendered":"<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style>\r\n\r\n<p>The hard part of hypersonics is not going fast. It is going fast often enough to learn anything.<\/p>\r\n\r\n<p>Flight tests above Mach 5 are rare, enormously expensive and frequently one-shot. A programme might get a handful of attempts across a decade, and if two of them fail early you have spent years and hundreds of millions of dollars to learn almost nothing.<\/p>\r\n\r\n<p>The Pentagon has been trying to break that bottleneck, and on 4 September GE Aerospace confirmed it has won the next phase of the effort: an air-launched test vehicle called Derecho, designed to cruise at Mach 5 and above, and designed above all to be flown repeatedly.<\/p>\r\n\r\n\r\n<div style=\"background:#f5f5f5;padding:20px;margin:24px 0;font-size:15px;line-height:1.7\"><p style=\"margin:0 0 10px;font-weight:700;font-size:17px\">Quick Facts<\/p><p style=\"margin:4px 0\"><strong>Vehicle:<\/strong> Derecho, an air-launched hypersonic test vehicle<\/p><p style=\"margin:4px 0\"><strong>Prime:<\/strong> GE Aerospace, through its Edison Works defence unit<\/p><p style=\"margin:4px 0\"><strong>Customer:<\/strong> US Defense Innovation Unit (DIU)<\/p><p style=\"margin:4px 0\"><strong>Programme:<\/strong> Hypersonic and High-Cadence Airborne Testing Capabilities (HyCAT), launched 2023<\/p><p style=\"margin:4px 0\"><strong>Architecture:<\/strong> All-up-round &mdash; a rocket booster plus a cruiser stage<\/p><p style=\"margin:4px 0\"><strong>Propulsion:<\/strong> Air-breathing dual-mode ramjet on the cruiser, liquid fuelled<\/p><p style=\"margin:4px 0\"><strong>Target speed:<\/strong> Around Mach 5 and above<\/p><p style=\"margin:4px 0\"><strong>First flight target:<\/strong> 2028, reported by Defense Daily<\/p><p style=\"margin:4px 0\"><strong>Contract value:<\/strong> Not disclosed<\/p><\/div>\r\n\r\n\r\n<h2 style=\"padding-top:22px\">What a dual-mode ramjet actually does<\/h2>\r\n\r\n<p>This is the technically interesting part, and it is worth being precise about it.<\/p>\r\n\r\n<p>A ramjet has no compressor. It relies on its own forward speed to ram air into the inlet and compress it, which means it produces no thrust standing still and needs a boost to get going. Inside a conventional ramjet the airflow is slowed to subsonic speed before combustion. That works well up to roughly Mach 5, above which slowing the air that much produces temperatures the structure cannot survive.<\/p>\r\n\r\n<p>A scramjet &mdash; supersonic combustion ramjet &mdash; keeps the airflow supersonic through the combustor instead. That is much harder, because you are trying to inject fuel, mix it and burn it in air moving through the engine in a few milliseconds.<\/p>\r\n\r\n<p>A dual-mode ramjet does both. It runs as a conventional ramjet at the lower end and transitions to supersonic combustion higher up, which widens the usable speed band of a single engine considerably. And because it is air-breathing, it takes its oxygen from the atmosphere rather than carrying an oxidiser, so more of the vehicle&rsquo;s mass can be fuel or payload.<\/p>\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img data-opt-id=2040561801  fetchpriority=\"high\" decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:0e0_.b970\/w:auto\/h:auto\/q:mauto\/ig:avif\/https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/scramjet-engine-ground-test-mach-5-conditions.jpg\" alt=\"A scramjet engine undergoing ground testing at simulated Mach 5 conditions\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">A scramjet on a ground rig simulating Mach 5 conditions. Ground testing can only take you so far, which is the entire argument for a repeatable flight testbed. Photo: U.S. Air Force<\/figcaption><\/figure>\r\n\r\n\r\n<h2 style=\"padding-top:22px\">Booster plus cruiser<\/h2>\r\n\r\n<p>Derecho uses what the industry calls an all-up-round architecture. A high-thrust rocket booster accelerates the stack to the speed at which the air-breathing engine can work. The cruiser then takes over on the dual-mode ramjet and sustains hypersonic flight, carrying whatever the test campaign needs to evaluate: heat-resistant materials, sensors, flight control systems, structures.<\/p>\r\n\r\n<p>The whole thing is air-launched, which matters more than it sounds. Dropping a test vehicle from an aircraft rather than launching it from a pad removes range scheduling, reduces cost per shot, and lets you put the vehicle where the weather and the instrumentation are good. It is the same logic that put the X-51A Waverider under the wing of a B-52.<\/p>\r\n\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #1565c0;padding:20px 22px;margin:18px 0 24px;font-size:16px;line-height:1.7;display:flex;gap:20px;align-items:flex-start\"><div><em>&ldquo;Acceleration in this type of hypersonic testing is critical to advancing next-generation capabilities at speed and scale. This work with DIU builds on years of investment and progress, and we are proud to help deliver a flexible, responsive test solution to support national defense priorities.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Steve &ldquo;Doogie&rdquo; Russell<\/strong> &mdash; Vice President and General Manager, Edison Works at GE Aerospace<\/div><\/div><\/div>\r\n\r\n<h2 style=\"padding-top:22px\">Why the Defense Innovation Unit is running it<\/h2>\r\n\r\n<p>HyCAT is a DIU programme rather than a traditional service acquisition, and that is deliberate. DIU exists to pull commercial-sector speed into defence work, favouring agile prototyping and shorter contract cycles over decade-long development programmes.<\/p>\r\n\r\n<p>The name says the goal out loud: high-cadence. Not one heroic flight, but a testbed that can be flown often enough that engineers get a dataset instead of an anecdote. Derecho is intended as a modular platform, so different payloads and subsystems can ride on successive flights.<\/p>\r\n\r\n<p>This phase covers full vehicle integration plus component-level qualification testing of critical subsystems, building on concept and subsystem design work that started in 2023. GE has not disclosed what it is worth.<\/p>\r\n\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\/cHPcuoIlpJE\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\r\n\r\n<p style=\"font-size:13px;color:#777;text-align:center;font-style:italic\">An explainer on the difference between ramjets and scramjets, the two modes a dual-mode ramjet has to bridge.<\/p>\r\n\r\n<h2 style=\"padding-top:22px\">The thing to watch<\/h2>\r\n\r\n<p>Reported plans put the first flight test in 2028, which would be GE Aerospace&rsquo;s first in-flight demonstration of its ramjet technology. The company has run the engine on the ground; flying it is a different order of problem.<\/p>\r\n\r\n<p>If Derecho works as intended, the significant outcome is not a speed record. It is that American hypersonic programmes stop being limited by how rarely they can fly. Every serious aerospace advance &mdash; the transonic barrier, supersonic cruise, stealth &mdash; came from being able to test repeatedly and fail cheaply. Hypersonics has not had that yet.<\/p>\r\n\r\n\r\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:\"\u2013\"}.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>\r\n\r\n\r\n<section class=\"mfq\"><h2>Frequently Asked Questions<\/h2><div class=\"qa\"><details open><summary>What is the GE Aerospace Derecho?<\/summary><div class=\"a\">Derecho is an air-launched hypersonic test vehicle being developed by GE Aerospace under a contract from the US Defense Innovation Unit. It pairs a rocket booster with a cruiser stage powered by GE dual-mode ramjet, and is designed to cruise at around Mach 5 and above as a modular testbed for materials, sensors and flight control systems.<\/div><\/details><details><summary>What is the HyCAT programme?<\/summary><div class=\"a\">HyCAT stands for Hypersonic and High-Cadence Airborne Testing Capabilities. It is a Defense Innovation Unit programme launched in 2023 to create low-cost, repeatable airborne platforms for testing hypersonic technologies. The aim is to remove the bottleneck caused by hypersonic flight tests being rare and extremely expensive.<\/div><\/details><details><summary>What is a dual-mode ramjet?<\/summary><div class=\"a\">A dual-mode ramjet can operate both as a conventional ramjet, in which incoming air is slowed to subsonic speed before combustion, and as a scramjet, in which combustion happens in supersonic airflow. Being able to switch between the two widens the speed range a single engine can cover, roughly spanning high supersonic through hypersonic flight.<\/div><\/details><details><summary>Why does an air-breathing engine matter for hypersonics?<\/summary><div class=\"a\">An air-breathing engine takes oxygen from the atmosphere rather than carrying an oxidiser on board, as a rocket must. That frees up mass and volume, allowing the vehicle to carry more fuel or more payload for the same size. The trade-off is that the engine only works once the vehicle is already moving fast, which is why Derecho needs a rocket booster first.<\/div><\/details><details><summary>When will Derecho fly?<\/summary><div class=\"a\">Reporting by Defense Daily puts the target for the first flight test at 2028. That flight would be GE Aerospace first in-flight demonstration of its ramjet technology, which the company has so far run on ground test rigs. The current contract phase covers full vehicle integration and component-level qualification of critical subsystems.<\/div><\/details><details><summary>How much is the GE Aerospace DIU contract worth?<\/summary><div class=\"a\">GE Aerospace has not disclosed the value of the contract. The award funds the next major phase of the HyCAT programme and builds on concept and subsystem design work that began in 2023 under the same effort.<\/div><\/details><\/div><\/section>\r\n\r\n\r\n\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the GE Aerospace Derecho?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Derecho is an air-launched hypersonic test vehicle being developed by GE Aerospace under a contract from the US Defense Innovation Unit. It pairs a rocket booster with a cruiser stage powered by GE dual-mode ramjet, and is designed to cruise at around Mach 5 and above as a modular testbed for materials, sensors and flight control systems.\"}},{\"@type\":\"Question\",\"name\":\"What is the HyCAT programme?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"HyCAT stands for Hypersonic and High-Cadence Airborne Testing Capabilities. It is a Defense Innovation Unit programme launched in 2023 to create low-cost, repeatable airborne platforms for testing hypersonic technologies. The aim is to remove the bottleneck caused by hypersonic flight tests being rare and extremely expensive.\"}},{\"@type\":\"Question\",\"name\":\"What is a dual-mode ramjet?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A dual-mode ramjet can operate both as a conventional ramjet, in which incoming air is slowed to subsonic speed before combustion, and as a scramjet, in which combustion happens in supersonic airflow. Being able to switch between the two widens the speed range a single engine can cover, roughly spanning high supersonic through hypersonic flight.\"}},{\"@type\":\"Question\",\"name\":\"Why does an air-breathing engine matter for hypersonics?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An air-breathing engine takes oxygen from the atmosphere rather than carrying an oxidiser on board, as a rocket must. That frees up mass and volume, allowing the vehicle to carry more fuel or more payload for the same size. The trade-off is that the engine only works once the vehicle is already moving fast, which is why Derecho needs a rocket booster first.\"}},{\"@type\":\"Question\",\"name\":\"When will Derecho fly?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Reporting by Defense Daily puts the target for the first flight test at 2028. That flight would be GE Aerospace first in-flight demonstration of its ramjet technology, which the company has so far run on ground test rigs. The current contract phase covers full vehicle integration and component-level qualification of critical subsystems.\"}},{\"@type\":\"Question\",\"name\":\"How much is the GE Aerospace DIU contract worth?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"GE Aerospace has not disclosed the value of the contract. The award funds the next major phase of the HyCAT programme and builds on concept and subsystem design work that began in 2023 under the same effort.\"}}]}<\/script><p><em>Sources: GE Aerospace statement; US Defense Innovation Unit; Aviation Week; Breaking Defense; Defense Daily; AeroTime.<\/em><\/p>\r\n\r\n\r\n<div style=\"background:#f0f4ff;border-left:4px solid #5C91FF;padding:16px 20px;margin:32px 0 8px\"><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\/afrl-affordable-hypersonic-cruise-missile-hamwc-2026\/\">AFRL Wants a Cheap Hypersonic Cruise Missile It Can Buy in Bulk<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/blackbeard-hypersonic-missile-super-hornet-testing-begins-2026\/\">Blackbeard on the Super Hornet: Hypersonic Testing Begins<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/mach-5-startup-hermeus-hits-1-billion-valuation\/\">Mach 5 Startup Hermeus Hits $1 Billion Valuation<\/a><\/p><\/div>\r\n\r\n","protected":false},"excerpt":{"rendered":"<p>GE Aerospace wird im Rahmen des HyCAT-Programms der Defense Innovation Unit den Derecho bauen, ein luftgest\u00fctztes Mach 5-Testfahrzeug mit einem Dual-Mode-Staustrahltriebwerk.<\/p>","protected":false},"author":23,"featured_media":20676099,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[664,670],"tags":[],"class_list":["post-20676378","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-military-aviation","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - 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