Noise-suppressed exhaust nozzles for jet engines

Details Noise-suppressed exhaust nozzles for jet engines Noise-suppressed exhaust nozzles for jet engines

1992-08-03

1993-11-16

Bertsch, Richard A.

Power plants

Reaction motor

Air passage bypasses combustion chamber

60269, F02K 138

Patent

active

052612295

ABSTRACT:
An array of chutes is permanently mounted within the flowpath of an exhaust nozzle of an aircraft jet engine for entraining and mixing ambient air with the exhaust gas so as to reduce the noise level of aircraft, particularly during take-off. In order to provide good engine performance during all modes of jet engine operation, a convergent-divergent flap assembly is arranged downstream from the chutes for controlling the nozzle throat and exit areas when the chutes are closed.

REFERENCES:
patent: 2910828 (1959-11-01), Meyer
patent: 3053340 (1962-09-01), Kutney
patent: 3386658 (1968-06-01), Mehr
patent: 3630311 (1971-12-01), Nagamatsu et al.
patent: 3938328 (1976-02-01), Klees
patent: 4587806 (1986-05-01), Madden
patent: 5157916 (1992-10-01), Wynosky et al.

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