Hiller VXT-8
Encyclopedia
The Hiller VXT-8 Coleopter was a proposed annular wing VTOL
VTOL
A vertical take-off and landing aircraft is one that can hover, take off and land vertically. This classification includes fixed-wing aircraft as well as helicopters and other aircraft with powered rotors, such as cyclogyros/cyclocopters and tiltrotors...

 aircraft designed in the United States in the late 1950s, inspired by the French SNECMA Coléoptère
SNECMA Coléoptère
The SNECMA Coléoptère was a VTO aircraft developed by the French in the 1950s. It was a single-person aircraft with an annular wing designed to land vertically, therefore requiring no runway and very little space to take-off. There were several prototypes developed and tested, however the design...

. The project did not progress beyond the mockup stage.

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