公开(公告)号：US5801341A

公开(公告)日：1998-09-01

申请号：US709984

申请日：1996-09-09

申请人： John Keith Newell ,  Gregory Richard Zwernemann

发明人： John Keith Newell ,  Gregory Richard Zwernemann

IPC分类号： F02K1/08 ,  F02K1/34 ,  F02K1/42 ,  F02K1/44 ,  F02K1/50 ,  F02K1/64 ,  B64D33/04

CPC分类号： B64D33/06 ,  F02K1/34 ,  F02K1/42 ,  F02K1/50 ,  F02K1/64

摘要： A noise suppression system for a jet engine of an aircraft having a device for blocking a flow of exhaust gases down the exhaust nozzle of the engine, and a device for separating the exhaust gases into a plurality of exhaust streams spaced a predetermined distance apart and having a smaller cross-sectional area than that of the original flow of exhaust gases. The separating device also directs the exhaust streams into the ambient air from points outside the periphery of a nacelle covering the engine. The aforementioned predetermined distance separating the exhaust streams, and the cross-sectional area of the exhaust streams, are chosen so that engine noise is shifted to a higher frequency spectrum than that of the original flow of exhaust gases, and then substantially dissipated within a short distance of the aircraft.

摘要翻译： 一种用于飞机的喷气发动机的噪声抑制系统，具有用于阻挡发动机的排气喷嘴下方的废气流的装置，以及用于将废气分离成间隔开预定距离的多个排气流的装置， 比原来的废气流更小的横截面面积。 分离装置还将排气流引导到覆盖发动机的机舱外围的点处的环境空气中。 选择分离排气流的上述预定距离和排气流的横截面面积，使得发动机噪声偏移到比原始废气流更高的频谱，然后在短时间内基本消散 飞机的距离