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특허 상세정보

Inlet noise deflector

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E04B-001/99   
미국특허분류(USC) 181/33HA ; 137/151 ; 415/119
출원번호 US-0503751 (1974-09-06)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 12  인용 특허 : 0
초록

An inlet duct for use with gas turbine engines or the like is provided with an axially upstream projecting deflector means to reduce noise propagation emanating within said duct. The deflector member has an essentially double arcuate contour of the lip in the axial direction which improves noise attenuation and inlet total pressure recovery. The contour is provided with at least one point of curvature inflection.

대표
청구항

An inlet duct for selectively reducing noise propagation emanating within said duct and improving inlet pressure recovery, said inlet duct including a circumscribing lip and an upstream deflector means positioned within a first circumferential sector of said inlet duct, said deflector comprising an extension of said lip and projecting axially forward of a second circumferential sector of said duct, the improvement comprising: a substantially arcuate axial contour of said lip at said deflector means wherein said contour has at least one point of curvature...

이 특허를 인용한 특허 피인용횟수: 12

  1. Surply, Thierry; Prat, Damien; Gagnaire, Benoit. Air inlet for commercial aircraft jet engine nacelle. USP2004036708711.
  2. Bensilum, Stephane Emmanuel Daniel. Air inlet of an aeroengine having unducted pusher propellers. USP2014018622340.
  3. Wood, Trevor Howard; Giacché, Davide; Ramakrishnan, Kishore. Air intake turboprop assemblies. USP20190410260417.
  4. Dougherty Robert P. (Bellevue WA). Apparatus and method for reducing noise emissions from a gas turbine engine inlet. USP1997125702231.
  5. Schafhaupt Horst (Egenhofen DEX) Ballmann Josef (Aachen DEX). Apparatus for diminishing intake vortexes in jet engines. USP1997015591904.
  6. McConachie James M. ; Curtin Margaret M. ; Dougherty Robert P. ; Sangwin Michael L.. Biplanar scarfed nacelle inlet. USP1999065915403.
  7. Rice Edward J. ; Walker Bruce E. ; Hersh Alan S.. Hybrid mode-scattering/sound-absorbing segmented liner system and method. USP1999115979593.
  8. Lord, Wesley K.; Malecki, Robert E.; Qiu, Yuan J.; Rose, Becky E.; Gilson, Jonathan. Low pressure ratio fan engine having a dimensional relationship between inlet and fan size. USP2018049932933.
  9. Lord, Wesley K.; Malecki, Robert E.; Qiu, Yuan J.; Rose, Becky E.; Gilson, Jonathan. Low pressure ratio fan engine having a dimensional relationship between inlet and fan size. USP2018039920653.
  10. Lee, Ok-no. Muffler for internal combustion engine. USP2003076588545.
  11. Malot, Hélène; Guegou, Jean-Pierre; Bienvenu, Philippe; Prunin, Philippe. Nozzle for an aircraft turboprop engine with an unducted fan. USP20181010113506.
  12. Willie, Robert H.; Tretow, Paul R.; Cerra, David F.. Trailing edge core compartment vent for an aircraft engine. USP20180810040560.