METHOD OF BATCH PRODUCTION OF GAS-TURBINE ENGINE, AND GAS-TURBINE ENGINE MADE BY MEANS OF THIS METHOD Russian patent published in 2015 - IPC G01M15/14 

FIELD: engines and pumps.

SUBSTANCE: invention relates to aircraft engine building, namely to aircraft gas-turbine engines. A batch production method of gas-turbine engines (GTE) involves manufacture of parts and completing of assembly units, components and assemblies of modules and systems of the engine. Modules are assembled in the amount of at least eight - from a low-pressure compressor to an all-mode turning jet nozzle. The engine is assembled module-by-module and made as two-stroke and two-shaft. After assembly is completed, the engine is tested for gas-dynamic stability of operation of the compressor. A certain specimen or three to five specimens of a batch of mass-produced engines, which are identical for statistical representation of results, are tested on a test bench. The test bench is provided with an inlet aerodynamic device with a remotely controlled extension-type interceptor that crosses an air flow in an adjustable manner. The interceptor includes a calibrated scale of interceptor positions, which has a fixed critical point separating the engine by 2-5% from transition to surging. When necessary, tests are repeated for a certain set of modes as per regulations, which correspond to real operation mode of GTE under flight conditions.

EFFECT: simplification of a technology and reduction of labour costs and power consumption for a GTE test process at an industrial batch production stage at enlargement of reliable determination of boundaries of the allowable thrust variation range.

12 cl, 4 dwg