- en.wikipedia.org SNECMA ColéoptèreThe SNECMA C.450 Coléoptère (meaning "beetle" in French, descended from Greek for "sheathed wing") was a tail-sitting vertical take-off and landing (VTOL)...
- jetsprops.com prototype/the-strange-and-weird-…Coléoptère was also equipped with a tilting seat, allowing the pilot to remain in the upright position both in vertical and horizontal flight.
- vertidev.vtol.org aircraft/getAircraft/aircraftID…However, the Coléoptère was unable to establish the hover and began descending faster than desired and fell into oscillations about all three axes.
- thelittleaviationmuseum.au planes/snecma-450-…The Coléoptère was one of a number of experiments conducted into vertical take off and landing aeroplanes during the 1950s.
- buyukansiklopedi.com Snecma_C-450_ColéoptèrePrototip okudu ve daha sonra tarafından yaptırılmıştır Nord-Havacılık havacılık birliği için, ve gelen Snecma 1957 için 1959 .
- aircrafttechnic.com aviation_technology/wingless-…In the 9th flight test of the Coleoptere, it was aimed to make it fly to a horizontal position with the control surfaces after taking off vertically...
- web.archive.org web/20090116020550/http://www.…The C.450-01 Coléoptère was a step to the annular wing configuration.
- ufologie.patrickgross.org aircraft/coleoptere.htmSNECMA's Coléoptère - Part I, little known debuts ... The annular wing concept and all those potential use are then licensed to SNECMA in 1951.
- goklerdeyiz.net ilginc-ucaklar-snecma-c-450-…İlginç uçaklar serimize Fransız yapımı ve 6 Mayıs 1959 yılında ilk uçuşunu yapan SNECMA C-450 Coléoptère isimli uçakla devam ediyoruz.
- aviationsmilitaires.net v3/kb/aircraft/show/764/…http://www.avionslegendaires.net/avion-militaire/snecma-c-450-coleoptere/.
- medium.com @salman12788/a-plane-without-wings-the…In the late 1950’s French aerospace firm SNECMA developed a highly unconventional tail-sitting vertical take-off and landing (VTOL) aircraft with an annular wing.
- secretprojects.co.uk threads/snecma-c-450-01-…Here is a short piece in French announcing the crash of the amazing SNECMA C.450-01 Coléoptère VTOL research prototype.