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특허 상세정보

Hydrofoils and airfoils

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-021/10   
미국특허분류(USC) 244/200 ; 244/199 ; 244/198 ; 244/201
출원번호 US-0507811 (1995-07-26)
발명자 / 주소
인용정보 피인용 횟수 : 34  인용 특허 : 0

A low turbulence cambered surface foil, hydrofoil or airfoil, which contains indentations located on maximum camber across which a fluid can be flowed. The indentations create turbulence in the boundary layer downstream of the indentations, changing the characteristics of the flowing fluid to a turbulent boundary layer ahead of the normal point of separation of the fluid from the foil, this causing the fluid to cling close to the surface of the foil and postpone or delay trailing edge separation of the fluid stream from the foil. The noise level is reduc...


In apparatus characterized as a foil having cambered surface extending from the leading edge to the trailing edge of said foil, between the cambered surface and a fluid of which relative movement can occur, the improvement which comprises an area completely smooth, without indentations and devoid of projections located between the leading edge of the foil and the area of maximum camber, and a plurality of surface indentations disposed in a row spanwise on maximum camber which is devoid of projections and, except for the presence of said indentations is s...

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