Power plants – Reaction motor – Liquid oxidizer
Patent
1984-12-17
1989-05-30
Casaregola, Louis J.
Power plants
Reaction motor
Liquid oxidizer
60757, 60725, F02K 1100
Patent
active
048338818
ABSTRACT:
A new and improved gas turbine engine augmentor including a liner having a film-coolable first portion joined to a convection-coolable second portion is disclosed. A cooling gas, such as fan bypass air, is channeled to the liner for film cooling the first portion and providing a residual cooling film to the second portion. The second portion is also convection coolable by air passing over an outer surface thereof. In a particular embodiment of the invention, the augmentor liner also includes a screech portion disposed at an upstream end of the first portion and downstream of a flameholder. The screech portion includes a substantially imperforate outer wall and an inner wall spaced therefrom which define a manifold therebetween. The inner wall includes a plurality of apertures in flow communication with the combustion zone. The manifold and apertures are effective for suppressing screech while substantially preventing the leakage of cooling air therethrough.
REFERENCES:
patent: 2525206 (1950-10-01), Clarke
patent: 3712062 (1973-01-01), Nash
patent: 3826082 (1974-07-01), Smuland et al.
patent: 3866417 (1975-02-01), Velegol
patent: 3974647 (1976-08-01), Lewis et al.
patent: 4122674 (1978-10-01), Andersson et al.
patent: 4222233 (1980-09-01), Johnson et al.
Lamando, Jr. Chester J.
Vdoviak John W.
Casaregola Louis J.
Conte Francis L.
General Electric Company
Lawrence Derek P.
Thorpe T.
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