An infrared heating cage heat flux calibration device

Abstract

The invention relates to the technical field of spacecraft space environment simulation and discloses an infrared heating cage heat flow density calibrating device which comprises an infrared heating cage and a calibrating simulation piece, wherein the distance between the infrared heating cage and the inner side of the calibrating device simulation piece is 150 mm; the infrared heating cage is fixed on a screw rod via a mounting ring and a fixing nut; an infrared heating cage heating band is arranged on the infrared heating cage; a heating piece, a thermocouple and a heat insulation layer are sequentially arranged on the outer side of the calibrating simulation piece; a thermal control coating is sprayed on the inner side of the calibrating simulation piece; a polytetrafluoroethylene insulation threaded sleeve is arranged on the screw rod. The infrared heating cage heat flow density calibrating device solves the problem the precision of simulation of external heat flux of the infrared heating cage for vacuum heat test of a spacecraft can not be calibrated, as a result, the reliability of the test result is improved; in addition, via the infrared heating cage calibrating, the quantity of used heat flow meters is decreased, and the test cost is lowered.

Description

technical field [0001] The invention relates to the technical field of spacecraft space environment simulation, in particular to an infrared heating cage heat flux calibration device. Background technique [0002] Before the spacecraft is launched into space, it must conduct a vacuum thermal test (including thermal balance test and thermal vacuum test) in the space environment simulator to simulate the cold and dark space environment. When a spacecraft conducts a vacuum thermal test, it is necessary to use a non-contact external heat flow simulation method to simulate the external heat flow in space. The infrared heating cage is a non-contact infrared simulator with a resistance heating belt as a radiation source. When conducting a vacuum thermal test, it can be used to simulate the thermal environment experienced by a spacecraft in space according to the actual situation of the spacecraft orbit (according to The absorption heat flow calculated by the method of orbit averag...

AI Technical Summary

Problems solved by technology

It mainly provides a heat flux calibration device for spacecraft infrared heating cages, which solves the problem that the accuracy of infrared heating cages for spacecraft vacuum heat tests cannot be assessed when simulating external heat flow, and improves the reliability of test results.

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