METHOD OF BATCH PRODUCTION OF TURBO-JET ENGINE, AND TURBO-JET 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 turbo-jet engines. A batch production method of turbo-jet engines (TJE) 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, engine tests are performed as per a multi-cycle programme. When performing the test steps, alteration of the modes, which exceed as to duration the programmed flight time, is performed. Typical flight cycles are shaped, on the basis of which there determined as per the programme is damageability of the most loaded parts. The required number of loading cycles during the test is determined based on the above. Full scope of tests is formed, including quick change of cycles in a full register from quick achievement of either maximum or full augmented power mode till complete stop of the engine, and then, representative cycle of continuous operation with repeated alternation of modes in the whole working spectrum with a different range of variation in modes, which exceeds flight time at least by 5 times. Quick selection of maximum or augmented power mode in some part of the test cycle is performed at the rate of acceleration and discharge.

EFFECT: improvement of reliability of test results at a batch production stage and enlargement of representativeness of evaluation of service life and reliability of operation of a turbo-jet engine in a wide range of regional and seasonal conditions of further flight operation of engines.

13 cl, 2 dwg