Exhaust eductor cooling system

Power plants – Combustion products used as motive fluid


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60 3908, 60262, F02G 300




A method and apparatus for cooling the heat generated by a gas turbine engine mounted in a compartment is provided. The apparatus comprises a novel eductor that incorporates a mixer nozzle to entrain sufficient air flow through the compartment to provide all the necessary cooling. The engine's oil cooler is mounted to the eductor so that the entrained air flow passes through it and cools the engine's oil. The novel eductor also has means for receiving a flow of high velocity air from the engine and injecting this air downstream of the mixer nozzle to enhance the entraining of the cooling flow.

patent: 3196608 (1965-07-01), Tindale
patent: 3696617 (1972-10-01), Ellis
patent: 3710890 (1973-01-01), True et al.
patent: 3812672 (1974-05-01), Escher
patent: 3841091 (1974-10-01), Sargisson et al.
patent: 3881315 (1975-05-01), Hess et al.
patent: 4128769 (1978-12-01), Bons et al.
patent: 4487017 (1984-12-01), Rodgers
patent: 4546605 (1985-10-01), Mortimer et al.
patent: 4773212 (1988-09-01), Griffin et al.
patent: 4909346 (1990-03-01), Torkelson
"Airborne Auxiliary Power Units", By F. A. Tomkins and Garrett Turbine Engine Company Engineering Staff, 1974, 1983; pp. 3-5 thru 3-9 6-1 thru 6-6, 9-8 thru 9-9 and Apendix A.


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