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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0020352 (1987-03-02) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 22 인용 특허 : 1 |
A VTOL aircraft having a fuselage with fixed ring wings on either side thereof. Each ring wing has a rearwardly extending nacelle associated with it. Each nacelle has a ring tail empennage at its after end and a propulsor fan in its nose operating in the bore of its associated ring wing. The propuls
In a VTOL aircraft having a longitudinally extending load-carrying fuselage with alighting means, said fuselage having a nose and an after end and having controls for the operation of said aircraft, the improvement comprising; arcuate airfoil surfaces fixedly attached to said fuselage, annular empen
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