TEST METHOD FOR AIRCRAFT GAS TURBINE ENGINE Russian patent published in 2021 - IPC G01M15/14 

FIELD: jet tech.

SUBSTANCE: invention relates to the field of jet technology, in particular to the field of diagnostics, repair, acceptance and delivery of gas turbine engines for aircraft and power plants operating on liquid and gaseous fuels. The proposed method for testing an aircraft gas turbine engine in bench conditions during presentation, acceptance, service life and special tests includes measuring the parameters of the engine operation at various modes within the range of engine flight modes, bringing the obtained parameters to standard atmospheric conditions, taking into account the maintenance of the specified laws of regulation and changes in the properties of the heat capacity of the working fluid and the geometry of the flow path during engine tests in atmospheric conditions that do not correspond to standard ones. According to the test results of prototypes of engines of this series, engine parameters are determined, both under standard atmospheric conditions, and not. A method for processing test results using two independent programs for engine debugging has been implemented. On the basis of the average statistical characteristics of the engine elements, the tuning performed while maintaining the given control laws, correction factors are determined to the measured basic engine parameters, according to which the measured parameters relate to the parameters obtained under standard atmospheric conditions. Real-time visualization of the correlation links of parameters with the function of selecting these links from the database is carried out.

EFFECT: use of the invention allows to increase the level of verification of the technical characteristics of products and to debug and assess their compliance with technical conditions, to organize the search for design flaws and their elimination, to eliminate the human factor, simultaneously with the tests to debug new programs and mathematical models of the engine, to reduce the test time by 1-2%.

2 cl, 3 dwg, 1 tbl