Exhaust mixer for turbofan aeroengine

Details Exhaust mixer for turbofan aeroengine Exhaust mixer for turbofan aeroengine

1984-08-22

1986-03-18

Croyle, Carlton R.

Power plants

Reaction motor

Air passage bypasses combustion chamber

60263, 60264, 60271, 181220, 23926517, F02K 302

Patent

active

045760020

ABSTRACT:
The exhaust mixer can be classified as being of the multi-lobed type, with troughs between the lobes. The lobes and troughs comprise confronting pairs of flow surfaces which are twisted between their upstream and downstream ends such that a vortex flow system is established downstream of the mixer to encourage mixing between the bypass airstream and the turbine exhaust stream. The downstream edges of the twisted flow surfaces are in the form of sinuous curves which destabilize the vortex system and cause the vortices to burst, hence increasing the mixing efficiency.

REFERENCES:
patent: 3153319 (1964-10-01), Young et al.
patent: 3664455 (1972-05-01), Duvvuri
patent: 4117671 (1978-10-01), Neal et al.
patent: 4175640 (1979-11-01), Birch et al.
patent: 4217756 (1980-08-01), Laskody
patent: 4227370 (1980-10-01), Kirker
patent: 4302934 (1981-12-01), Wynosky et al.
patent: 4401269 (1983-08-01), Eiler
patent: 4487017 (1984-12-01), Rodgers

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