GAS TURBINE ENGINE Russian patent published in 2002 - IPC

FIELD: gas turbine engines; support pressurization. SUBSTANCE: proposed gas turbine engine has common centralized pressurization system of supports, each including pressurization space and pre-oil space. Similar spaces of supports are placed in communication through air ducts. Pressurization spaces are placed in communication with one of last stages of compressor through main pressurization change-over valve and feed air duct. Feed air duct has additional change-over valve with two inlets, one of which communicates with one of last stages of compressor and other, with self- contained supply source. Outlet is connected with one of inlets of main pressurization change-over valve. EFFECT: provision of air delivery to supports for their cooling when engine is shut down which increases reliability of engine. 4 dwg