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특허 상세정보

Device for reducing jet engine exhaust noise using oscillating jets

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02K-001/30    F02K-001/00    F02K-001/34    B64C-023/06    B64C-023/00    B64D-033/04    B64D-033/00    F02K-001/10    F02K-001/38    B64B-001/24    B64B-001/00   
미국특허분류(USC) 181/215; 181/220; 181/221; 244/001.N; 244/053.B
출원번호 US-0750240 (2003-12-30)
등록번호 US-7308966 (2007-12-18)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 7  인용 특허 : 17
초록

A device for reducing engine exhaust noise in an aircraft engine includes a number of oscillating jets which direct an oscillating flow into the engine exhaust. The oscillating jets are connected via channels to a turbomachinery source of high pressure gas, where the source is located upstream from the engine exhaust portion. The high pressure gas passes through the oscillating jets, which have a nozzle with a triangular shaped orifice and an exhaust pipe, and exits the oscillating jets having a oscillating flow. The oscillating flow mixes with the engin...

대표
청구항

What is clamed is: 1. A device for reducing jet engine exhaust noise, comprising: at least one oscillating jet coupled to an engine exhaust portion, said oscillating jet comprising: a nozzle with a triangular shaped orifice formed therein, and an exhaust pipe coupled to said nozzle, wherein a flow of gas passes through said triangular shaped orifice and exits from said exhaust pipe, having an oscillating flow, and wherein at least a portion of said gas from said exhaust pipe mixes with engine exhaust passing through said engine exhaust portion. 2. T...

이 특허에 인용된 특허 (17)

  1. Terrier Douglas A. (Fort Worth TX). After-burning turbo-fan engine with a fixed geometry exhaust nozzle having a variable flow coefficient. USP1997095664415.
  2. Dorris ; III John ; Smith David Michael ; Parekh David Espineli ; Kibens Valdis. Apparatus and methods for active flow control of a nozzle exhaust plume. USP2001106308898.
  3. John Michael Koshoffer. Fluidic nozzle control system. USP2002016336319.
  4. Valdis Kibens ; Ganesh Raman. High frequency excitation apparatus and method for reducing jet and cavity noise. USP2002046375118.
  5. Wright Charles P. (Seattle WA). Internally ventilated noise suppressor for jet engine. USP1984104474259.
  6. Stanek, Michael J.. Jet noise suppressor. USP2003066571549.
  7. Shaw ; Jr. Leonard L. (Troy OH). Jet noise suppressor and method. USP1992035092425.
  8. Smith Brian R. ; Miller Daniel N. ; Yagle Patrick J. ; Bender Erich E. ; Ginn Kerry B.. Method and system of pulsed or unsteady ejector. USP2001106308740.
  9. Papamoschou Dimitri. Method of eliminating Mach waves from supersonic jets. USP1999065916127.
  10. Papamoschou Dimitri (Mission Viejo CA). Method of eliminating mach waves from supersonic jets. USP1997015590520.
  11. Choi,Michael; Keyvanmanesh,Amir. Noise attenuation device for a vehicle exhaust system. USP2006087086498.
  12. Martens, Steven. Shelf truncated chevron exhaust nozzle for reduction of exhaust noise and infrared (IR) signature. USP2003036532729.
  13. Glezer Ari ; Wiltse John W.. Synthetic jet actuators for mixing applications. USP2000056056204.
  14. Glezer Ari ; Smith Barton L.. Synthetic jet actuators for modifiying the direction of fluid flows. USP1999115988522.
  15. Gupta, Anurag; Graziosi, Paolo; Mani, Ramani. System and method for actively changing an effective flow-through area of an inlet region of an aircraft engine. USP2003126655632.
  16. Cowan ; Sr. Howard H. (3315 N. Godfrey #36 Midland TX 79707). System for suppressing engine exhaust noise. USP1995075428954.
  17. Sokoloff Michael D. (2616 Madison Rd. Cincinnati OH 45208) Johnson Randy A. (Cincinnati OH). Vortex connector. USP1996025490545.