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특허 상세정보

Terraced channels for reducing afterbody drag

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-001/38   
미국특허분류(USC) 244/130 ; 244/199 ; 244/200
출원번호 US-0660708 (1984-10-15)
발명자 / 주소
인용정보 피인용 횟수 : 25  인용 특허 : 1
초록

A fluid flow control for reducing the drag associated with an upswept afterbody includes a pair of ridges forming substantially symmetric flow channels arranged in an approximately helical fashion on either side of the afterbody so as to intersect at approximately the centerline of the undersurface. Each ridge has a generally rearward pitch so that the flow channels form a substantially V-shaped configuration rearwardly. The flow channels cross the local fluid flow streamlines at an optimum angle for producing a strong vortex core along the channel lengt...

대표
청구항

A fluid flow control device for reducing the vorticity discharged from and drag associated with an aircraft having an upswept body afterbody having sides and an undersurface comprising: (a) a series of longitudinally spaced pairs of ridges forming symmetric flow channels arranged in approximately a helical fashion on either side of the afterbody so as to intersect at approximately the centerline of the undersurface; (b) each ridge having a generally rearward pitch such that the symmetric flow channels have a substantially trough-like configuration; and e...

이 특허를 인용한 특허 피인용횟수: 25

  1. Hyde Leslie L,GBX. Aircraft fin and rudder. USP2001036202959.
  2. Roland Stuff DE; Heinrich Vollmers DE. Aircraft with means for a premature breakdown of the wing vortex pair. USP2002076422518.
  3. Birkenstock, David. Boundary layer control system and methods thereof. USP2014068746624.
  4. Miller, Daniel N.; Young, David D.. Conformal aero-adaptive nozzle/aftbody. USP2010037686256.
  5. Conners, Timothy R.; Henne, Preston A.; Howe, Donald C.. Isentropic compression inlet for supersonic aircraft. USP2016119482155.
  6. Conners, Timothy R.; Howe, Donald C.; Henne, Preston A.. Isentropic compression inlet for supersonic aircraft. USP2012128333076.
  7. Henne, Preston A.; Conners, Timothy R.; Howe, Donald C.. Isentropic compression inlet for supersonic aircraft. USP2012128327645.
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  13. Conners, Timothy R.. Low shock strength propulsion system. USP2014078783039.
  14. Dixon, Charles J.; Hughes, Arthur C.. Method and apparatus for inducing controlled vortices to reduce afterbody drag. USP2004046715717.
  15. Smith, Brian R.; Maines, Brant H.; Ma, Edward C.; DiGirolamo, Edward A.; Yagle, Patrick J.. Microvanes for aircraft aft body drag reduction. USP2012078226038.
  16. Kim, Nak Hwe. Propulsion device using fluid flow. USP2015059033665.
  17. Alfano, David. Rotorcraft structural element for reducing aerodynamic drag. USP2014098827201.
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  19. Henne, Preston A.; Conners, Timothy R.; Howe, Donald C.. Supersonic aircraft jet engine installation. USP2016059334801.
  20. Rethorst Scott (1806 Foothill St. Pasadena CA 91030). Supersonic aircraft shock wave energy recovery system. USP1997105676333.
  21. Henne, Preston A.; Howe, Donald C.; Wolz, Robert R.; Hancock, Jr., Jimmy L.. Supersonic aircraft with spike for controlling and reducing sonic boom. USP2004036698684.
  22. Henne, Preston A.; Howe, Donald C.; Wolz, Robert R.; Hancock, Jr., Jimmy L.. Supersonic aircraft with spike for controlling and reducing sonic boom. USP2014078789789.
  23. Birkenstock, David T. System and method for drag reduction. USP20190210204192.
  24. Birkenstock, David T.. System and method for drag reduction. USP2012028113466.
  25. Smith, Brian R.; Yagle, Patrick J.. Vortex generation device. USP2015079079658.