Turboshaft engine that reduces rear noise emissions

Details Turboshaft engine that reduces rear noise emissions Turboshaft engine that reduces rear noise emissions

2006-05-11

2010-02-02

Donels, Jeffrey (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S210000, C244S00100R

Reexamination Certificate

active

07654363

ABSTRACT:
A turboengine that reduces rear noise emissions has a thickness of a rear part of a sound-attenuating coating, which is borne internally by an external fan cowl, that is increased toward a front part of the sound-attenuating coating. An increased-thickness zone is connected to a pan of the coating, located in a critical area of a jet nozzle, by a surface having a curved profile.

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International Search Report dated Sep. 4, 2006.

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