GAS-TURBINE ENGINE COMBUSTION CHAMBER Russian patent published in 2001 - IPC

FIELD: gas-turbine engines. SUBSTANCE: combustion chamber of gas-turbine engine has double-walled fire tube. Wall of fire tube directed towards gas chamber is made in the form of segments with longitudinal and transversal radial fins having height h on air-cooled side. Fins divide wall into cooled flats; opposite centers of said flats nozzles are mounted at distance l from wall; total cross-section area of nozzle fΣ/F = 1.5-3, where F is cross-section area of diffuser of chamber at its inlet. Segments are coupled together by means of tongue-and-groove joint. EFFECT: enhanced reliability of chamber due to improved convective cooling of fire tube walls at minimum hydraulic losses of cooling air. 5 dwg