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특허 상세정보

Helicopter antitorque system using circulation control

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-027/82   
미국특허분류(USC) 244/1719 ; 244/207 ; 244/130
출원번호 US-0862814 (1977-12-21)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 54  인용 특허 : 0
초록

An antitorque system for use in a helicopter produces antitorque moments with efficiency comparable to that of the tail rotor it is designed to replace. The antitorque forces are generated mainly from the main rotor downwash by the circulation control effect. The downwash is deflected laterally as it passes around the tail boom by a sheet of air continuously discharged tangentially to the surface of the tail boom on one side of it at velocities in the range 30 to 120 meters per second from slots extending longitudinally along the tail boom and having a w...

대표
청구항

For use in a helicopter having a fuselage elongated in a longitudinal direction, suspended beneath a main rotor, and extending aftward from the center of the main rotor through the rotor downwash to an aft end, an antitorque system usable at high flight speeds, comprising: a linear nozzle extending generally in the longitudinal direction along the fuselage on one side of it and oriented to discharge a sheet of fluid substantially tangentially to the fuselage and downwardly around it; a source of fluid communicating with said linear nozzle to supply fluid...

이 특허를 인용한 특허 피인용횟수: 54

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