United Technologies Corporation

Marvin R Glickstein

James T Dixon

Donald M Podolsky

Leland L Coons

A method and apparatus for supplying cooling air on vehicles such as high speed aircraft includes diverting high pressure air from the compressor section of a gas turbine engine, cooling this air in a heat exchanger, compressing the air and subsequently cooling the air in a second heat exchanger to provide cooled, high pressure air. One embodiment additionally provides cooled air at relatively medium pressure and relatively low pressure, while the alternate embodiment additionally provides cooled air at relatively low pressure.

High pressure air source for aircraft and engine requirements

A method for supplying cooling air on vehicles such as high speed aircraft includes diverting high pressure air from the compressor section of a gas turbine engine, cooling this air in a heat exchanger, and expanding the diverted high pressure air through an auxiliary turbine. Coolant in the heat exchanger may be inlet ram air, fan air, or aircraft fuel (which may be endothermic), and the coolant is ultimately introduced into the engine downstream of the compressor section. An auxiliary compressor may be used to further compress the diverted high pressure air or coolant prior to the flowing thereof through the heat exchanger, and one or more auxiliary turbines may be used to power the auxiliary compressor, or mechanical accessories on the vehicle.

Aircraft cooling method

A method for managing the energy produced by a gas turbine engine, which includes utilizing an endothermic fuel to cool the combustion products in the exhaust section of the gas turbine engine prior to burning the fuel in the combustion section of the engine.

Endothermic fuel energy management system

A method for providing both starting power and thermal management requirements of a vehicle incorporating a gas turbine engine by using the same unit to alternately provide both starting power and cooling air.

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North Palm Beach, FL, United States of America

Marvin R Glickstein