METHOD FOR DETERMINING COEFFICIENT OF COMPLETENESS OF FUEL COMBUSTION IN RAMJET ENGINE Russian patent published in 2021 - IPC F02K7/08 G01M15/00 

FIELD: aviation; space industry.

SUBSTANCE: invention relates to aviation technology and rocket and space technology, namely, to the development of high-speed aircraft with an integrated hydrogen-fueled power plant. A method for determining the coefficient of completeness of fuel combustion in a ramjet engine, in which an engine model is rigidly connected to a horizontal traction-measuring platform, is proposed. The platform is mounted on transverse elastic supports and connected to a force sensor. After that, air is supplied to an inlet to a combustion chamber. The force is measured on the force sensor. Then, fuel is fed into the combustion chamber. The resulting fuel mixture is ignited and, during the combustion of the mixture, the force on the force sensor and the static pressure in the output section of the model are measured. Physical quantities are measured during a test. Then, the coefficient of completeness of combustion of the fuel mixture is calculated by solving a system of equations satisfying the law of conservation of mass, momentum and energy, which is compiled for the output section of a nozzle.

EFFECT: invention makes it possible to determine the coefficient of completeness of fuel combustion with a supersonic gas flow rate in the combustion chamber of the engine model, streamlined by free air flow, as well as to increase the accuracy of determining parameters during full-scale measurements and tests of the engine model.

1 cl, 1 dwg