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특허 상세정보

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Serrated trailing edges for improving lift and drag characteristics of lifting surfaces

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-021/10   
미국특허분류(USC) 244/200 ; 244/198 ; 244/212 ; 244/215
출원번호 US-0429516 (1989-10-31)
발명자 / 주소
  • Vijgen Paul M. H. W. (Hampton VA) Howard Floyd G. (Hampton VA) Bushnell Dennis M. (Wicomico VA) Holmes Bruce J. (Newport News VA)
출원인 / 주소
  • The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (Washington DC 06)
인용정보 피인용 횟수 : 99  인용 특허 : 0
초록

An improvement in the lift and drag characteristics of a lifting surface is achieved by attaching a serrated panel to the trailing edge of the lifting surface. The serrations may have a saw-tooth configuration, with a 60°included angle between adjacent serrations. The serrations may vary in shape and size over the span-wise length of the lifting surface, and may be positioned at fixed or adjustable deflections relative to the chord of the lifting surface.

대표
청구항

An apparatus for improving lift and drag characteristics of a lifting surface in a fluid flow having a span, a leading edge, a trailing edge, and a chord, comprising: a serrated panel having an upper and a lower surface and a plurality of span-wise, periodic indentions; and a pivotal connecting means for connecting the serrated panel to the trailing edge of the lifting surface such that the serrated panel extends from the trailing edge into the fluid flow and both the upper and lower surfaces of the serrated indentions remain in contact with the fluid.

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