Variable area flameholder duct

Details Variable area flameholder duct Variable area flameholder duct

1975-07-31

1977-01-18

Croyle, Carlton R.

Power plants

Reaction motor

Air passage bypasses combustion chamber

60 39, 60 3972R, 60271, F02C 722

Patent

active

040032019

ABSTRACT:
An annular ram burner has a movable wall adjacent the flameholder to provide a large variation in area change at the flameholder plane. The movable wall comprises a number of flaps mounted around the ram burner. While a ram burner is shown a fan duct burner can also be used. The flaps are attached to an actuator mechanism through a linkage system which allows the wall to be moved rapidly and to be simply controlled by an engine control device, substantially in the same manner that the variable area exhaust nozzle is controlled. The flaps further are provided with a liner so that cooling air is directed therethrough to an annular liner around the combustion chamber.

REFERENCES:
patent: 2910828 (1959-11-01), Meyer et al.
patent: 3386248 (1968-06-01), Pike et al.
patent: 3412560 (1968-11-01), Gaubatz
patent: 3633362 (1972-01-01), Sotheran et al.
patent: 3715079 (1973-02-01), Thompson
patent: 3730436 (1973-05-01), Madden et al.
patent: 3792815 (1974-02-01), Swavely et al.

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