METHOD OF HEAT TESTS OF INSTRUMENT COMPARTMENT OF AIRCRAFT Russian patent published in 2014 - IPC G05D23/00 B64G7/00 

FIELD: heating.

SUBSTANCE: tests are carried out in a heat chamber in two stages. At the first stage the full-scale thermal insulation package of the instrument compartment is subjected to external thermal loading simulating flight. Simultaneously, on the inner surface of the package the boundary heat transfer conditions are created corresponding to the heat removing from the shell of the housing inside the instrument compartment. According to the measured temperatures of the said inner surface the schedule of temperature change on the housing of the instrument compartment on time is obtained. At the second stage the housing is heated without heat-insulating according to the received schedule. Simultaneously the temperatures of the gaseous medium and apparatus of the instrument compartment, generating heat removing in accordance with the flight timing diagram, are measured.

EFFECT: reduction of the cost of the tests carried out without the use of special large stands and chambers, with simulation of aerodynamic flow.

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