FIELD: engine building.
SUBSTANCE: gas turbine engine (3) comprises compressor section (9) intended for compression of combustion air, furnace section (15) and turbine section (21). Turbine section (21) comprises rotor (41) comprising impeller (43) with blades, rotating around axis (A—A) of turbine rotation, diffuser (65) for exhaust gases and casing (52), having inner surface and outer surface. Casing (52) also comprises cooling ribs (75) located on its outer surface.
EFFECT: thus, preferable temperature profile can be obtained, which can contribute to reduction of thermal stress and deformation; in some embodiments this may facilitate dismantling of the casing parts.
11 cl, 3 dwg
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