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특허 상세정보

Damping system for high frequency combustion instabilities in a combustion chamber

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02C-007/24   
미국특허분류(USC) 60/725 ; 239/26511 ; 181/213
출원번호 US-0993013 (1992-12-18)
우선권정보 FR-0015944 (1991-12-20)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 15  인용 특허 : 0
초록

The damping system comprises at least one resonant acoustic cavity disposed around the combustion chamber and having a shape and dimensions such that it functions simultaneously as a quarter-wave resonator and with tangential coupling the resonant acoustic cavity comprises: a) a main annular part whose half axial section has a very elongate shape with a width dimension “e”which is very small compared to its longitudinal dimension “L1”which extends substantially parallel to the axis of symmetry of the combustion chamber, the mean radius “R”of the main ann...

대표
청구항

A damping system for high frequency combustion instabilities in a combustion chamber of a rocket engine comprising an injection head and an outer wall extending from said injection head downwardly around said combustion chamber, said outer wall comprising means forming a nozzle throat and said outer wall extending further downwardly from said nozzle throat to define an open ejection cone, wherein the system comprises at least one resonant acoustic cavity disposed around the combustion chamber and having a shape and dimensions such that it functions as a ...

이 특허를 인용한 특허 피인용횟수: 15

  1. Portillo Bilbao, Juan Enrique; Rajaram, Rajesh; You, Danning; Spence, Kevin M.. Acoustic damping system for a combustor of a gas turbine engine. USP2016079400108.
  2. Lorch Frederick A. ; Sharp Gordon P. ; Succi George. Acoustic resonator. USP2000096116375.
  3. Wasif,Samer P.; Johnson,Clifford E.. Acoustic resonator with impingement cooling tubes. USP2008087413053.
  4. Sattinger,Stanley S.. Acoustically stiffened gas-turbine fuel nozzle. USP2008127464552.
  5. Alkabie,Hisham. Aerodynamic trip for a combustion system. USP2007127302802.
  6. Johnson, Clifford E.; Lepers, Joachim; Wasif, Samer P.. Combustor assembly including one or more resonator assemblies and process for forming same. USP2011118061141.
  7. Kim, Kwanwoo; Sharma, Dheeraj; Bethke, Sven; Fu, Yongqiang. Combustor casing for combustion dynamics mitigation. USP2016099447970.
  8. Tonon, Devis; Bothien, Mirko Ruben; Genin, Franklin Marie; Pennell, Douglas Anthony. Damper with bent neck for gas turbine. USP20180710036327.
  9. Maeding, Udo. Damping of vibration of a combustion chamber by resonators. USP2011108033111.
  10. Hewitt, Ross A.. Diversion of combustion gas within a rocket engine to preheat fuel. USP2004106799417.
  11. Bland,Robert; Ryan,William. High frequency dynamics resonator assembly. USP2006077080514.
  12. Valdis Kibens ; Ganesh Raman. High frequency excitation apparatus and method for reducing jet and cavity noise. USP2002046375118.
  13. Brown, William S.; Walczuk, Thomas M.; Noble, Rodney; Dodd, Frederick. Low velocity injector manifold for hypergolic rocket engine. USP2016089404441.
  14. Hewitt, Ross A.. Nozzle with spiral internal cooling channels. USP2004106802179.
  15. Crosta, Franck; Prat, Damien. Turboshaft engine that reduces rear noise emissions. USP2010027654363.