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"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Passive micro-roughness array for drag modification

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-021/10   
미국특허분류(USC) 244/200; 244/198; 244/200.1
출원번호 US-0708897 (2007-02-21)
등록번호 US-8113469 (2012-02-14)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Ballard Spahr LLP
인용정보 피인용 횟수 : 10  인용 특허 : 28
초록

The present invention is directed to a micro-array surface that provides for either drag reduction or enhancement. In one aspect, an aerodynamic or hydrodynamic wall surface that is configured to modify a fluid boundary layer on the surface comprises at least one array of roughness elements disposed on and extending therefrom the surface. In one example, the interaction of the roughness elements with a turbulent boundary layer of the fluid reduces the skin friction drag coefficient of the surface over an identical smooth surface without the roughness ele...

대표
청구항

1. An aerodynamic or hydrodynamic wall surface configured to modify the interaction of a boundary layer of a fluid with the wall surface, comprising: at least one array of roughness elements disposed on and extending therefrom the surface, wherein each roughness element has a front, upstream surface and an opposing rear, downstream surface, wherein each roughness element has a peripheral edge that has an upper portion that tapers to a top and a bottom portion that tapers to a base, which is connected to the wall surface, wherein each roughness element is...

이 특허에 인용된 특허 (28)

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