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특허 상세정보

Tip vortex generation technology for creating a lift enhancing and drag reducing upwash effect

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-003/10    B64C-005/08    B64C-023/06    B64C-009/06   
미국특허분류(USC) 244/199 ; 244/35 ; R ; 244/46 ; 244/130
출원번호 US-0276407 (1994-07-18)
발명자 / 주소
인용정보 피인용 횟수 : 80  인용 특허 : 0
초록

Methods for using tip generated vortices to improve performance of foils. These methods include generating a substantially streamwise beneficial vortex (74) near the outboard end (60) of a foil (82). This beneficial vortex (74) spins in the opposite direction of an induced drag vortex (62), and is used to create an upwash field (76) which neutralizes induced drag by deflecting the flow behind the trailing edge (56) at an upward angle. Upwash field (76) causes the lift vector (118) on the foil (82) to tilt forward, thereby creating a forward directed forc...

대표
청구항

A method for improving the performance of a foil type device, comprising the steps of: (a) providing relative movement between said foil and a fluid medium, wherein said relative movement occurs in a manner which creates a lifting force on said foil by forming a relative low pressure field within said fluid medium along the low pressure surface of said foil, and by forming a relative high pressure field within said fluid medium along the high pressure surface of said foil, and said lifting force on said foil is substantially directed from said high press...

이 특허를 인용한 특허 피인용횟수: 80

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