FIELD: aviation.
SUBSTANCE: method of modelling heat and mass exchange processes of aircraft construction element (ACCE) with the environment under conditions of absolute pressure reduction is based on the introduction of gas stream into the experimental model installation (EMI), providing conditions for interaction of gas stream in the contact zone with ACCE, measuring temperature, pressure, speed. An additional amount of heat is supplied to the ACCE by burning pyrotechnic mixture fixed to the ACCE. The gas stream, pressure and gas composition parameters in the ACCE are selected in accordance with the atmospheric parameters at the current altitude when the ACCE is moving. An additional amount of heat is supplied by heating the ACCE with thermal equivalent of pyrotechnic mixture, for example an electric heater. The ACCE heating zone is additionally supplied with energy in the form of acoustic, laser action, the parameters of which are determined from the condition for increasing the efficiency of ACCE heating. Device for implementing the method includes in its composition an experimental stand, in the form of a closed volume for creating lower absolute pressure, an ECI comprising ACCE fixing system, temperature sensors, pressure, inlet and outlet nozzles, gas analyzer for determining the percentage of gases at the inlet and outlet. The EMI also includes a pyrotechnic mixture with ignition system, a high-speed video camera, a gas stream preparation system, an ACCE rotation system with a fixed source of heat input relative to the direction of gas stream, acoustic, laser emitters, an electric heater.
EFFECT: invention makes it possible to expand the boundaries of modelling heat and mass exchange processes of aircraft construction element with environment in conditions of absolute pressure reduction.
4 cl, 1 dwg
