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公开(公告)号：EP2961971B1
公开(公告)日：2019-05-22
申请号：EP14756466.0
申请日：2014-02-26
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公开(公告)号：EP2961971A1
公开(公告)日：2016-01-06
申请号：EP14756466.0
申请日：2014-02-26
CPC分类号： F02C9/18 , F04D27/0238 , F05D2260/96 , F05D2270/101
摘要： An anti-surge mechanism has a duct for tapping compressed air and delivering that air into an exhaust flow. A selectively open valve allows the tapped air to flow into the exhaust flow through a plurality of holes. The holes are sized to tune a frequency of a sound created by the tapped air to a frequency range outside of normal human hearing. A gas turbine engine is also disclosed.
摘要翻译： 一个防喘振机构有一个用于抽出压缩空气并将空气输送到排气流中的导管。 选择性地打开的阀门允许抽出的空气通过多个孔流入废气流中。 这些孔的尺寸设定为将由抽头空气产生的声音的频率调谐到正常人听力以外的频率范围。 燃气涡轮发动机也被公开。
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公开(公告)号：EP2971733B1
公开(公告)日：2019-01-30
申请号：EP14769728.8
申请日：2014-03-03
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公开(公告)号：EP2971733A1
公开(公告)日：2016-01-20
申请号：EP14769728.8
申请日：2014-03-03
CPC分类号： B64D33/06 , B64D41/00 , B64D2041/002 , F01D25/30 , F02C7/24 , F02C7/32 , F05D2220/50 , F05D2260/96 , Y02T50/44
摘要： An exhaust system for an APU in a gas turbine engine aircraft having a tail cone in which exhaust noise is reduced. An APU exhaust liner is attached to the APU and extending to an oval cutout at the tail cone The liner has a first constant cross section from the APU to a point proximate the tail cone, and a second, increasing cross section from the point proximate the tail cone to the liner cutout. The liner is turned toward the side of the tail. The liner cutout is further enlarged with at least one larger cutout.
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