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특허 상세정보

Sound attenuation apparatus and method

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F01N-001/24    F02C-007/24    F02K-001/34    B64D-041/00   
출원번호 US-0804867 (2015-07-21)
등록번호 US-9587563 (2017-03-07)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Perman & Green, LLP
인용정보 피인용 횟수 : 1  인용 특허 : 32
초록

An aircraft auxiliary power unit sound attenuation apparatus includes a perforated body having a center aperture through which exhaust fluid passes, a backing member outwardly offset from the perforated body, a plurality of connecting members coupling the perforated body to the backing member to form a locally reacting sound attenuation member having a plurality of channels spanning outwardly from the perforated body to the backing member, and a bulk absorber disposed in each of the plurality of channels where the bulk absorber is in fluid communication ...

대표
청구항

1. An aircraft auxiliary power unit sound attenuation apparatus comprising: a perforated body having a center aperture through which exhaust fluid passes;a backing member outwardly offset from the perforated body;a plurality of connecting members coupling the perforated body to the backing member to form a locally reacting sound attenuation member having a plurality of channels spanning outwardly from the perforated body to the backing member;at least one septum layer disposed between the perforated body and backing member where the at least one septum l...

이 특허에 인용된 특허 (32)

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  24. Winfield, Ian F.; Braden, Robert L.. Porous septum cap. USP2015099127452.
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  26. Starobinski, Rudolf; Siercke, Matthias. Silencer for an auxiliary power unit of an aircraft. USP2014078763751.
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