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公开(公告)号:US09915201B2
公开(公告)日:2018-03-13
申请号:US14140959
申请日:2013-12-26
Applicant: Rolls-Royce Corporation
Inventor: Michael Abraham Karam , Craig Heathco , Andrew Eifert
IPC: F02C6/16 , F02C7/045 , F02C3/13 , F02C6/14 , F02C7/27 , F02K3/12 , F02C3/30 , F02C6/08 , F02C6/04 , F02C9/18 , F02C7/262 , F02C9/52 , F02C1/02 , F02C6/06 , F02C7/26 , F02C9/50
CPC classification number: F02C7/045 , F02C1/02 , F02C3/13 , F02C3/305 , F02C6/04 , F02C6/06 , F02C6/08 , F02C6/14 , F02C6/16 , F02C7/26 , F02C7/262 , F02C7/27 , F02C9/18 , F02C9/50 , F02C9/52 , F02K3/12 , F05B2260/42 , F05B2270/103 , F05B2270/1031 , F05B2270/1033 , F05B2270/1073 , F05B2270/111 , F05D2260/42 , F05D2260/963 , F05D2270/05 , F05D2270/051 , F05D2270/093 , F05D2270/13 , F05D2270/3061
Abstract: A gas turbine engine is disclosed which includes a bypass passage that in some embodiments are capable of being configured to act as a resonance space. The resonance space can be used to attenuate/accentuate/etc a noise produced elsewhere. The bypass passage can be configured in a number of ways to form the resonance space. For example, the space can have any variety of geometries, configurations, etc. In one non-limiting form the resonance space can attenuate a noise forward of the bypass duct. In another non-limiting form the resonance space can attenuate a noise aft of the bypass duct. Any number of variations is possible.