FIELD: engines and pumps.
SUBSTANCE: gas turbine engine comprises bearing support circulation lubing system that comprises oil feed and breathing systems with their oil ducts made in gas turbine engine support ribs. Proposed system comprises induction-type rpm contactless transducer arranged at breathing system lube duct inlet, inductor made up of gear wheel fitted on engine rotor under rpm transducer with its axle aligned with engine rotor rotational axis, signal processing system, and electric lines connecting rpm transducer with signal processing system. Note here that inductor is arranged under breathing system lube duct inlet. RPM transducer is fitted at breathing system lube duct inlet, while electric lines connecting rpm transducer with signal processing system are arranged in breathing system oil chamber lube ducts and at breathing system lube duct inlet.
EFFECT: simplified design, stable thermal operating conditions.
2 cl, 5 dwg
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