METHOD FOR CORRECTION OF MATHEMATICAL MODEL OF LIQUID-PROPELLANT ENGINE Russian patent published in 2024 - IPC G05B17/02 G06F17/18 

FIELD: cosmonautics.

SUBSTANCE: invention relates to aerospace engineering, particularly, to liquid-propellant rocket engines (LPE), and is intended for use in their experimental development, operation, and modernization. In order to identify the mathematical model of the engine, the equations of its mathematical model are corrected according to the results of measurements of the parameters of the engine on the fire test by introducing additive coefficients of correction into each equation, which allows correcting the mathematical model of the liquid-propellant engine in the absence of a predetermined composition of the corrected equations of the mathematical model or inaccurate measurements of one or more parameters. Such model responds flexibly to changes in the composition of measurements in case of loss of one or more sensors, problems with obtaining or processing part of information and, according to the degree of adequacy, is applicable for replacing part of fire tests with digital ones.

EFFECT: when implementing the proposed method, expanded means of reliable design simulation of liquid-propellant engine operation under various operating conditions and, finally, in replacement of part of full-scale tests by calculation studies during experimental development, operation and modernization of liquid-propellant engine.

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