FIXED GEOMETRY MIXER/EJECTOR NOISE SUPPRESSION SYSTEM FOR TURBOFAN AIRCRAFT ENGINES

摘要

An internal flow mixer is attached to the rearward end of a turbofan engine for inverting the engine fan and core streams. Rearwardly of the internal flow mixer is a multi-lobed exhaust nozzle which mixes ambient air with the gases flowing from t he flow mixer. An ejector housing lined with acoustic absorption material receives the flow fro m the exhaust nozzle and discharges the thrust producing gases in noise abatement cond ition.