Turbine engine having combustor air precooler

Power plants – Combustion products used as motive fluid – Combustion products generator

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F02C 100

Patent

active

050126466

ABSTRACT:
The present invention provides means for significantly increasing the available power from an aircraft turbine engine, especially a turboprop or turboshaft engine. This is achieved by including a heat exchanger intermediate the compressor and the combuster; to significatnly reduce the temperature of the compressed gases fed to the combustor; the temperature drop ratio across the combustor air precooler must be greater than the pressure drop ratio across the precooler. This provides an increase in density of the air fed to the combustor with a resultant increase in mass flow through the combustor and the turbine, which increases available power, especially at higher altitudes. The aircraft turbine engine comprises a compressor to compress ambient air; a combustor in fluid flow connection with the compressor, for combusting compressed air and fuel; a heat exchanger means in intermediate fluid flow connection between the compressor and the combustor, to cool the compressed air; and a turbine in fluid flow connection with the combustor outlet, designed to be driven by the heated gases from the combustor.

REFERENCES:
patent: 3651645 (1972-03-01), Grieb
patent: 3971210 (1976-07-01), Rose
patent: 4081958 (1978-04-01), Schelp
patent: 4137705 (1979-02-01), Andersen et al.
patent: 4254618 (1981-03-01), Elovic
patent: 4426842 (1984-01-01), Collet

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