METHOD OF HEAT RESISTANCE TESTS OF HYPERSONIC AIRCRAFTS COWLINGS AND INSTALLATION FOR ITS REALISATION Russian patent published in 2017 - IPC G01N25/72 G01M9/04 

FIELD: aviation.

SUBSTANCE: invention relates to the method of heat resistance testing of nose cones and leading edges of air intake of hypersonic aircrafts (hereinafter referred to as HAC) by means of infrared heaters under the hypersonic flight program and relates to the method of creating a large heat flux density (4-5 MW/m²) and the subsequent transfer of it to the test object in a very short time (less than 0.1 s), in particular, to the very front of nose cone or leading edge of air intake. With the help of an autonomous high-temperature heater, thermal energy (heat flux) is accumulated in a special chamber located perpendicular to the axis of nose part, and then through the adjustable diaphragm determining distribution of heat flux along the nose of cone, the necessary heat flux density is created and, together with the side heaters, nose part of cowling is radiated by this heat flux, opening the bottom wall of the special chamber, located directly above the focusing diaphragm and the nose of tested cone. The bottom wall, consisting of two or more parts, is opened at a speed providing flight rate of onset of heat flux on nose of cone together with side heaters.

EFFECT: providing a thermal shock to nose of cone, which occurs when hypersonic flight speeds are reached and supersonic jump appears in an exceptionally short time, simplifying the process of heating the object, increasing reliability and accuracy of temperature field.

2 cl, 2 dwg