STRUCTURAL OR NON-STRUCTURAL CONNECTING SUPPORT OF COMPRESSOR CRANKCASE OF JET TURBINE ENGINE; INTERMEDIATE CRANKCASE OF JET TURBINE ENGINE, AND JET TURBINE ENGINE

摘要

FIELD: engines and pumps.;SUBSTANCE: structural or non-structural connecting support of compressor crankcase of jet turbine engine forms a straightening grid at compressor rotor outlet. Support has the possibility of shaping acoustic noise suppressor. Support includes closed cavity and perforations. Perforations form Helmholtz resonator at least on one of their sides (8Bin, 8Bex). Cavity is continued with a hollow element made in the form of a pocket. Pocket is arranged in nacelle. Nacelle encloses compressor crankcase. And/or cavity is continued with a hollow element that is located inside crankcase of primary flow circuit. Intermediate crankcase and jet turbine engine are described.;EFFECT: reduction of compressor noise; maintenance of aerodynamic characteristics and mechanical strength without increasing the weight.;10 cl, 2 dwg