{"id":4279466,"date":"2026-07-07T07:00:00","date_gmt":"2026-07-07T05:00:00","guid":{"rendered":"https:\/\/migflug.com\/jetflights\/snecma-coleoptere-annular-wing-vtol\/"},"modified":"2026-09-04T09:18:40","modified_gmt":"2026-09-04T07:18:40","slug":"snecma-coleoptere-annular-wing-vtol","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/snecma-coleoptere-annular-wing-vtol\/","title":{"rendered":"France&#8217;s Flying Barrel That Actually Took Off"},"content":{"rendered":"<p><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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At SNECMA, engineers were building an aircraft with no wings you would recognise \u2014 no long span, no tail as anyone knew it, just a jet engine wrapped inside a great metal ring, designed to stand on its tail and rise straight into the sky.<\/p>\r\n<p>They named it the Col\u00e9opt\u00e8re \u2014 French for \u201cbeetle.\u201d It was one of the boldest, strangest flying machines the jet age ever produced, and for a few weeks in 1959 it actually worked.<\/p>\r\n\r\n<div style=\"background: #f4f6f8; border-radius: 8px; padding: 18px 22px; margin: 8px 0 26px; font-size: 15px; line-height: 1.7;\">\r\n<div style=\"font-weight: bold; letter-spacing: .03em; color: #333; margin-bottom: 8px;\">QUICK FACTS<\/div>\r\n<table style=\"width: 100%; border-collapse: collapse;\">\r\n<tbody>\r\n<tr>\r\n<td style=\"padding: 4px 0; color: #666; width: 38%;\">Aircraft<\/td>\r\n<td style=\"padding: 4px 0;\"><strong>SNECMA C.450 Col\u00e9opt\u00e8re<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"padding: 4px 0; color: #666;\">Type<\/td>\r\n<td style=\"padding: 4px 0;\">Annular-wing VTOL tail-sitter<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"padding: 4px 0; color: #666;\">Engine<\/td>\r\n<td style=\"padding: 4px 0;\">SNECMA Atar turbojet<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"padding: 4px 0; color: #666;\">Test pilot<\/td>\r\n<td style=\"padding: 4px 0;\">Auguste Morel<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"padding: 4px 0; color: #666;\">Fate<\/td>\r\n<td style=\"padding: 4px 0;\">Sole prototype destroyed on its 9th flight, 25 July 1959<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n\r\n<h2 style=\"padding-top: 22px;\">A wing shaped like a ring<\/h2>\r\n<p>The heart of the idea was the annular wing \u2014 a doughnut-shaped ring encircling the fuselage, conceived by the Austrian engineer Helmut von Zborowski. In theory the ring did three jobs at once: it acted as the lifting surface, it formed the aircraft\u2019s structure, and it wrapped the engine in a smooth, drag-reducing shroud. Power came from a SNECMA Atar turbojet, the same family of engine that drove France\u2019s Mirage fighters. The Col\u00e9opt\u00e8re needed no runway at all \u2014 it would leap straight up, tip over into level flight, and land back on its tail.<\/p>\r\n<p>It did not appear from nowhere. SNECMA had first tested the raw concept on the \u201cAtar Volant,\u201d a flying test rig that was little more than an engine on legs learning to balance in the air.<\/p>\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin: 0 0 24px;\"><img decoding=\"async\" class=\"skip-lazy\" style=\"max-width: 100%; height: auto; border-radius: 6px;\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/07\/snecma-atar-volant.jpg\" alt=\"SNECMA Atar Volant flying test rig\" data-no-lazy=\"1\" \/>\r\n<figcaption style=\"font-size: 13px; color: #777; text-align: center; margin-top: 6px; font-style: italic;\">The \u201cAtar Volant\u201d \u2014 an engine on legs \u2014 was the flying test rig that led to the Col\u00e9opt\u00e8re. Photo: Wikimedia Commons<\/figcaption>\r\n<\/figure>\r\n\r\n<h2 style=\"padding-top: 22px;\">Standing on a column of thrust<\/h2>\r\n<p>Test pilot Auguste Morel first hovered the Col\u00e9opt\u00e8re on a tether in April 1959, then cut it loose in early May and held the machine in a free hover for three and a half minutes \u2014 balanced on nothing but its own jet blast. Over the following weeks he flew it again and again, climbing to around 800 metres, coaxing more out of the beetle each time.<\/p>\r\n<p>The killer was the transition. Lying on his back and pointing at the sky, the pilot had almost no natural reference to tell him what the aircraft was doing as it tried to tip from vertical to horizontal flight. It was, in the words used of every tail-sitter, like trying to land a rocket by feel \u2014 the same brutal problem that defeated America\u2019s <a href=\"https:\/\/migflug.com\/afterburner\/convair-xfy-pogo-tail-sitter-vtol-fighter-coleman\/\">Convair XFY Pogo<\/a>.<\/p>\r\n<h2 style=\"padding-top: 22px;\">The ninth flight<\/h2>\r\n<p>On 25 July 1959, on its ninth flight, it all came apart. As Morel attempted a manoeuvre the Col\u00e9opt\u00e8re began to rotate and oscillate; disoriented and low, he lost control and ejected, escaping with his life but serious injuries. The sole prototype was destroyed. A second was planned, but the money never came, and the beetle\u2019s brief, brilliant career was over.<\/p>\r\n<p>The annular wing never flew again. Helicopters and, later, jump-jets like the <a href=\"https:\/\/migflug.com\/aircraft\/harrier-jump-jet\">Harrier<\/a> won the argument over how to take off without a runway. But the Col\u00e9opt\u00e8re remains one of aviation\u2019s great and beautiful \u201cwhat ifs\u201d \u2014 a very French piece of audacity that briefly, genuinely, stood on its tail and flew.<\/p>\r\n\r\n<div style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; margin: 24px 0;\"><iframe class=\"skip-lazy\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; border-radius: 8px;\" src=\"https:\/\/www.youtube.com\/embed\/8b1KR1_Cekw\" allowfullscreen=\"allowfullscreen\" data-no-lazy=\"1\"><\/iframe><\/div>\r\n\r\n<p><em>Sources: Mus\u00e9e de l\u2019Air et de l\u2019Espace; Vertipedia; Wikipedia.<\/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<!-- mf-faq -->\r\n\r\n\r\n<div class=\"mf-faq-block\"><style>.mf-faq-block{margin:34px 0}.mf-faq-item:not([open]) .mf-faq-answer{display:none !important}.mf-faq-block h2.mf-faq-h{padding-top:22px;margin-bottom:14px}.mf-faq-item{border:1px solid #e2e8f5;border-radius:8px;margin:0 0 10px;background:#fff}.mf-faq-item summary{list-style:none;cursor:pointer;padding:15px 50px 15px 18px;font-weight:600;color:#1a1a1a;position:relative;line-height:1.45;user-select:none}.mf-faq-item summary::-webkit-details-marker{display:none}.mf-faq-item summary::after{content:\"+\";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:1.5em;font-weight:400;color:#5C91FF;line-height:1}.mf-faq-item[open] summary::after{content:\"\\2013\"}.mf-faq-item[open] summary{border-bottom:1px solid #eef1f8}.mf-faq-item summary:hover{background:#f5f8ff}.mf-faq-answer{padding:14px 18px;color:#333;line-height:1.6}.mf-faq-answer p{margin:0}.mf-faq-answer a{color:#5C91FF}<\/style>\r\n<h2 class=\"mf-faq-h\">Related Questions<\/h2>\r\n<details class=\"mf-faq-item\">\r\n<summary>What was the SNECMA Col\u00e9opt\u00e8re?<\/summary>\r\n<div class=\"mf-faq-answer\">\r\n<p>The SNECMA C.450 Col\u00e9opt\u00e8re (French for 'beetle') was a radical French VTOL aircraft of the late 1950s. It had no conventional wings or tail, just a jet engine wrapped inside a large annular 'ring wing,' and was designed to stand on its tail and rise straight into the sky. For a few weeks in 1959 the sole prototype actually flew.<\/p>\r\n<\/div>\r\n<\/details><details class=\"mf-faq-item\">\r\n<summary>What is an annular wing?<\/summary>\r\n<div class=\"mf-faq-answer\">\r\n<p>An annular wing is a doughnut-shaped ring encircling an aircraft's fuselage, an idea conceived by Austrian engineer Helmut von Zborowski. On the Col\u00e9opt\u00e8re it did three jobs at once: acting as the lifting surface, forming the aircraft's structure, and wrapping the engine in a smooth, drag-reducing shroud. The concept never flew successfully again after the Col\u00e9opt\u00e8re.<\/p>\r\n<\/div>\r\n<\/details><details class=\"mf-faq-item\">\r\n<summary>What is a tail-sitter aircraft?<\/summary>\r\n<div class=\"mf-faq-answer\">\r\n<p>A tail-sitter is an aircraft that takes off and lands vertically while resting on its tail, then tilts to fly horizontally. The Col\u00e9opt\u00e8re was one example. The transition from vertical to horizontal flight was the killer problem, since the pilot lay on his back with little reference, much like the American <a href=\"https:\/\/migflug.com\/afterburner\/ryan-x-13-vertijet-tailsitter-history\/\">Ryan X-13 Vertijet<\/a> faced the same disorienting challenge.<\/p>\r\n<\/div>\r\n<\/details><details class=\"mf-faq-item\">\r\n<summary>What happened to the SNECMA Col\u00e9opt\u00e8re?<\/summary>\r\n<div class=\"mf-faq-answer\">\r\n<p>On 25 July 1959, on its ninth flight, the Col\u00e9opt\u00e8re began to rotate and oscillate during the transition to horizontal flight. Test pilot Auguste Morel, disoriented and low, lost control and ejected, surviving with serious injuries. The sole prototype was destroyed, a planned second aircraft was never funded, and the beetle's brief, brilliant career was over.<\/p>\r\n<\/div>\r\n<\/details><details class=\"mf-faq-item\">\r\n<summary>Why were 1950s VTOL tail-sitters so difficult to fly?<\/summary>\r\n<div class=\"mf-faq-answer\">\r\n<p>Tail-sitters like the Col\u00e9opt\u00e8re demanded that a pilot transition from pointing straight up to level flight with almost no natural sense of the aircraft's attitude, lying on his back and 'landing a rocket by feel.' The same brutal control problem defeated designs such as the <a href=\"https:\/\/migflug.com\/afterburner\/focke-wulf-triebflugel-vtol-ramjet-interceptor\/\">Focke-Wulf Triebfl\u00fcgel<\/a> and America's Convair XFY Pogo. Helicopters and later jump-jets solved vertical flight more practically.<\/p>\r\n<\/div>\r\n<\/details><\/div>\r\n<p><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What was the SNECMA Col\u00e9opt\u00e8re?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The SNECMA C.450 Col\u00e9opt\u00e8re (French for 'beetle') was a radical French VTOL aircraft of the late 1950s. It had no conventional wings or tail, just a jet engine wrapped inside a large annular 'ring wing,' and was designed to stand on its tail and rise straight into the sky. For a few weeks in 1959 the sole prototype actually flew.\"}},{\"@type\":\"Question\",\"name\":\"What is an annular wing?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An annular wing is a doughnut-shaped ring encircling an aircraft's fuselage, an idea conceived by Austrian engineer Helmut von Zborowski. On the Col\u00e9opt\u00e8re it did three jobs at once: acting as the lifting surface, forming the aircraft's structure, and wrapping the engine in a smooth, drag-reducing shroud. The concept never flew successfully again after the Col\u00e9opt\u00e8re.\"}},{\"@type\":\"Question\",\"name\":\"What is a tail-sitter aircraft?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A tail-sitter is an aircraft that takes off and lands vertically while resting on its tail, then tilts to fly horizontally. The Col\u00e9opt\u00e8re was one example. 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The sole prototype was destroyed, a planned second aircraft was never funded, and the beetle's brief, brilliant career was over.\"}},{\"@type\":\"Question\",\"name\":\"Why were 1950s VTOL tail-sitters so difficult to fly?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Tail-sitters like the Col\u00e9opt\u00e8re demanded that a pilot transition from pointing straight up to level flight with almost no natural sense of the aircraft's attitude, lying on his back and 'landing a rocket by feel.' The same brutal control problem defeated designs such as the <a href=\\\"https:\/\/migflug.com\/afterburner\/focke-wulf-triebflugel-vtol-ramjet-interceptor\/\\\">Focke-Wulf Triebfl\u00fcgel<\/a> and America's Convair XFY Pogo. Helicopters and later jump-jets solved vertical flight more practically.\"}}]}<\/script><!-- \/mf-faq -->","protected":false},"excerpt":{"rendered":"<p>The SNECMA Col\u00e9opt\u00e8re wrapped a jet inside a giant ring wing and stood it on its tail. For a few weeks in 1959 it flew \u2014 until the ninth flight ended in a crash.<\/p>\n","protected":false},"author":25,"featured_media":4279435,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[666,664],"tags":[],"class_list":["post-4279466","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 v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SNECMA Coleoptere: The VTOL Flying Barrel<\/title>\n<meta name=\"description\" content=\"France&#039;s SNECMA Coleoptere used a ring-shaped annular wing to take off vertically. 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