METHOD FOR MEASURING THE TEMPERATURE OF A MODEL DURING EVACUATION IN A HYPERSONIC FLOW Russian patent published in 2022 - IPC G01M9/00 G01K7/02 

FIELD: experimental aerothermodynamics.

SUBSTANCE: method relates to the field of experimental aerothermodynamics, in particular to short-term laboratory vacuum aerodynamic installations that provide simulation of flight conditions for aircraft in the upper atmosphere with high Mach numbers. The method for measuring the temperature of a model during evacuation in a hypersonic flow consists in measuring the room temperature and the signals of the heat flux sensor: zero and at the start of the hypersonic nozzle, calculating the temperature at the start of the nozzle through the signal difference divided by the transfer coefficient of the heat flow sensor, and summing it with room temperature. In this case, before the nozzle is started, the evacuation process is carried out, after completion, the zero signal is measured again, the temperature change is calculated by the value of the difference in the electrical signals of the sensor before and after evacuation, and the temperature at the start of the nozzle is calculated through the difference in the electrical signals of the sensor after evacuation and at the start of the nozzle. The start time of the nozzle is no more than 20% of the evacuation time.

EFFECT: accuracy of measuring the heating temperature of models in a hypersonic flow in medium and high vacuum is improved.

1 cl, 3 dwg