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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0666080 (1976-03-11) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 9 인용 특허 : 0 |
The aircraft in the nature of a helicopter is movable in a vertical direction when being raised from the ground or landing thereon. The body of the aircraft is toroidal in form, that is to say, the shape of a doughnut having a central aperture. The central aperture has a jet engine mounted therein p
In a doughnut-shaped aircraft, an aircraft body, a jet engine extending in a vertical direction supported by the center of said body, said jet engine having a combustion chamber from which gas is expelled downwardly at the exhaust end, conduit means extending upwardly from opposite sides of said cha
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