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특허 상세정보

Apparatus and methods for active flow control of a nozzle exhaust plume

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02K-001/00    F02K-003/04   
미국특허분류(USC) 239/265.17 ; 600/204 ; 600/264 ; 600/271
출원번호 US-0332268 (1999-06-11)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Alston & Bird LLP
인용정보 피인용 횟수 : 29  인용 특허 : 3

Mixing of a subsonic exhaust plume from a nozzle is induced and enhanced, and shaping of the plume is controlled, by periodic pulsed jets of fluid injected into the plume from two or more locations spaced circumferentially about the plume. The jets are pulsed out of phase relative to one another. An active flow control apparatus includes at least first and second pulsed jet nozzles circumferentially spaced apart about the exhaust plume near an exit plane of the exhaust nozzle, and a pulse generator operable to supply periodic pulses of fluid to each of t...


[ What is claimed is:] [1.]1. A method for enhancing mixing of an exhaust plume from a nozzle, comprising:directing periodically recurring pulsed jets of fluid inwardly into the exhaust plume from at least two locations spaced circumferentially about the plume, with pulses directed from said locations being out of phase relative to one another, the jets being pulsed at a frequency selected based on flow conditions of the plume so as to cause instability of a shear layer of the plume downstream from an exit plane of the nozzle and thereby cause the plume ...

이 특허를 인용한 특허 피인용횟수: 29

  1. Braga Da Costa Campos, Luis Manuel. Active noise reducing nozzle. USP2004036705547.
  2. Bauer, Michael; Schauwecker, Ludwig; Redmann, Daniel; Steigenberger, Josef. Aircraft engine with an apparatus for pulsating expiration of gas into the exhaust nozzle. USP2015119193469.
  3. Viswanathan,Krishnamurthy. Apparatus and method for reduction jet noise from single jets. USP2008057377108.
  4. Viswanathan, Krishnamurthy. Apparatus and method for reduction of jet noise from single jets. USP2010087784285.
  5. Viswanathan,Krishnamurthy. Apparatus and method for reduction of jet noise from turbofan engines having separate bypass and core flows. USP2008057377109.
  6. Bonnet,Jean Paul; Delville,Joel; Collin,Erwan; Tensi,Jean; Moreau,Eric; Touchard,Gerard. Device for controlling propulsive jet mixing for aircraft jet engines. USP2007027174718.
  7. Gupta,Anurag. Device for reducing jet engine exhaust noise using oscillating jets. USP2007127308966.
  8. Miller, Daniel N.; Domel, Neal D.; Schemm, Cole W.. Exhaust plume heat effect reducing method and apparatus. USP2012118316631.
  9. Graziosi, Paolo; Kirtley, Kevin; Mani, Ramani. Fluidic chevrons and configurable thermal shield for jet noise reduction. USP2009097581692.
  10. Thurston,John F.; Ryan,William F.. Fluidic pulse generator system. USP2006087096888.
  11. Martens,Steven; Saddoughi,Seyed Gholamali; Early,Kevin Sean. Method and apparatus for noise attenuation for gas turbine engines using at least one synthetic jet actuator for injecting air. USP2006067055329.
  12. Winkler, Chad M.; Dorgan, Andrew J.; Werner, Eric L.. Method and apparatus for nozzle thrust vectoring. USP2017019551296.
  13. Gutmark,Ephraim Jeff; Callender,Bryan W.; Martens,Steven. Method and apparatus for operating gas turbine engines. USP2008087412832.
  14. Gupta, Anurag; Saddoughi, Seyed. Method and apparatus for supersonic and shock noise reduction in aircraft engines using pneumatic corrugations. USP2010037685806.
  15. Brooke,Darrell; Blodgett,Keith E. J.. Method for optimizing turbine engine exhaust system. USP2008097424413.
  16. Ouellette,Richard P.. Method of operating a pulsejet. USP2006057051510.
  17. Howe, Mark E.. Method of varying a fan duct nozzle throat area of a gas turbine engine. USP2015028959889.
  18. Krothapalli, Anjaneyulu; Greska, Brenton. Microjet noise suppression system for jet engines. USP2012078225592.
  19. Kinde, Sr., Ronald August. Modular engine units including turbine engine with combustion mediating hub. USP2013068453428.
  20. Todorovic, Predrag. Noise-reduced aircraft engine and method for reducing noise emissions of an aircraft engine. USP2012078220586.
  21. Rose, Marco; Spieweg, Rene. Nozzle with guiding devices. USP2017039605621.
  22. Rose, Marco; Spieweg, Rene. Nozzle with guiding devices. USP2016039279387.
  23. Howe, Mark E.. Pivoting fan nozzle nacelle. USP2012038127532.
  24. Ouellette, Richard P.; Kutzmann, Aaron J.. Pulsejet augmentor powered VTOL aircraft. USP2004096793174.
  25. Ouellette, Richard P.. Pulsejet ejector thrust augmentor. USP2005046883304.
  26. Ouellette, Richard P.; Kutzmann, Aaron J.. Runway-independent omni-role modularity enhancement (ROME) vehicle. USP2005086926235.
  27. Richards, Martyn; Howarth, Nicholas. Turbine engine and a method of operating a turbine engine. USP2010117841185.
  28. Winter, Michael. Turbofan engine with variable bypass nozzle exit area and method of operation. USP2013078480350.
  29. Thomas, Russell H.; Kinzie, Kevin W.. Wet active chevron nozzle for controllable jet noise reduction. USP2011098015819.