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특허 상세정보

Auxiliary power unit exhaust duct with muffler incorporating an externally replaceable acoustic liner

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64D-033/02    B64D-033/00   
미국특허분류(USC) 181/214; 181/217; 181/210; 181/211; 181/212; 181/216; 181/241; 181/243; 244/053.B; 244/001.N; 060/766; 060/752; 060/796
출원번호 US-0999887 (2004-11-30)
등록번호 US-7350619 (2008-04-01)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Ingrassia Fisher & Lorenz
인용정보 피인용 횟수 : 6  인용 특허 : 31
초록

Methods and apparatus are provided for an exhaust duct having an externally replaceable acoustic liner. The exhaust duct includes a forward section that is configured to be axially coupled with a bulkhead collar on the aircraft, a body section that is coupled to the forward section and a stinger cap that includes the replaceable acoustic liner. The replaceable acoustic liner is configured to be slideably received by the body section.

대표
청구항

We claim: 1. An exhaust duct for use in an aircraft, comprising: a forward section configured to be axially coupled with the aircraft; a body section coupled to the forward section; and a stinger cap with an acoustic liner, the acoustic liner configured to be slideably received by the body section, and replaceable from outside the aircraft. 2. The exhaust duct of claim 1, wherein the acoustic liner is formed from acoustically permeable material. 3. The exhaust duct of claim 2, wherein the acoustically permeable material is feltmetal or perfmetal. ...

이 특허에 인용된 특허 (31)

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