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특허 상세정보

Porous airfoil and process

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-021/02   
미국특허분류(USC) 244/200 ; 244/204
출원번호 US-0735846 (1991-07-25)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 19  인용 특허 : 0

A porous airfoil having venting cavities with contoured barrier walls, formed by a core piece, placed beneath a porous upper and lower surface area that stretches over the nominal chord of an airfoil is employed, to provide an airfoil configuration that becomes self-adaptive to very dissimilar flow conditions to thereby improve the lift and drag characteristics of the airfoil at both subcritical and supercritical conditions.


An airfoil device comprising: a thin skin surface layer completely covering an airfoil and forming a top and a bottom airfoil surface; at least one of said top and said bottom airfoil surfaces being formed of a porous thin skin material; a barrier wall disposed internally of said at least one of said top and said bottom airfoil surfaces; said barrier wall extending along a chord of said airfoil and having an arcuate contoured portion thereof abutting said thin skin material at the leading edge and a tapered sharp edge portion of said barrier wall abuttin...

이 특허를 인용한 특허 피인용횟수: 19

  1. Rolston Stephen C.,GBX ; Ashford Edward M.,GB5. Aerodynamic low drag structure. USP1998045743488.
  2. Schmidt, Eric Thomas. Aerodynamically efficient surfaces. USP2012118315847.
  3. Schmidt, Eric Thomas. Aerodynamically efficient surfaces. USP2013108556215.
  4. Zhu, Xiaoyi. Aircraft generating a lift from an interior thereof. USP2014128910903.
  5. Alderman, James; Rolston, Stephen; Meyer, Jonathan. Aircraft wing rib. USP20180610005545.
  6. Birkenstock, David. Apparatus system and method for drag reduction. USP2009117614588.
  7. Birkenstock, David. Apparatus, system and method for drag reduction. USP2017099764823.
  8. Billman, Garrett M.; O'Neil, Patrick J.. Forebody vortex alleviation device. USP2003096612524.
  9. Meyer,Pascal J. Laminar flow nacelle for an aircraft engine. USP2006057048230.
  10. Koppelman, Henry J.; Gregg, Paul S.. Laminar flow panel. USP2014078783624.
  11. Kraenzien Peter,DEX. Leading edge construction for an aerodynamic surface and method of making the same. USP2000046050523.
  12. Atassi, Oliver V.. Nacelle with porous surfaces. USP2015038974177.
  13. O'Neil Patrick J. ; Billman Garrett M.. Passive porosity airfoil management device. USP2000066079671.
  14. Tiwari, Sean; Weaver, Luby. Perforated surface for suction-type laminar flow control. USP20180610000277.
  15. Pal, Anadish Kumar. Surface flow diverting and static charging ducted pores on wing or blade tip to reduce wake and BVI noise. USP2009127637462.
  16. Fedorov Alexander V.,RUX ; Malmuth Norman D.. Use of absorbing walls for laminar flow control. USP1999035884871.
  17. Shome, Moushumi; Calkins, Frederick T.; Apdalhaliem, Sahrudine. Variable camber airfoil system. USP2015099145198.
  18. Cook, Brian G.; Louis, John; Van de Van, Thomas; Vieito, Robert M.. Wing flaps for aircraft and methods for making the same. USP2015129199721.
  19. Wood, Norman. Wing leading edge venting. USP2016119487287.