Flat-plate external heat flow simulation device

Abstract

The invention belongs to an external heat flow simulation device, and specifically discloses a flat plate type external heat flow simulation device, wherein it includes an infrared board, and an electric heater is installed at intervals on the side of the infrared board facing away from the star, and two adjacent electric heaters are installed at intervals. There is a main cooling pipeline installed on the infrared board between the heaters, and the main cooling pipeline is connected with the auxiliary cooling pipeline through the radiation rib; the side of the infrared board facing the star is painted with black paint with an emissivity greater than or equal to 0.9; Mount the thermocouple on the side of the plate facing the star. The external heat flow simulation device of the present invention provides a very high uniformity of external heat flow through the infrared board, the heating system and the cooling system, and the provided external heat flow can be directly calculated by using the temperature of the infrared board, so that the external heat flow measurement system is not required.

Description

technical field [0001] The invention belongs to an external heat flow simulation device, in particular to a flat-plate external heat flow simulation device used for simulating space external heat flow in a spacecraft heat balance test. Background technique [0002] The simulation of external heat flow is very critical in spacecraft heat balance test. The inaccurate simulation of external heat flow (heat flow uniformity and size) will bring great errors to the results of the heat balance test and affect the validity of the heat balance test. [0003] The external heat flow simulation devices commonly used in my country's spacecraft include infrared lamps, infrared cages and contact electric heaters. In my country, the infrared lamp external heat flow simulation device is mainly used for the thermal test of communication and navigation series satellites, and provides the required external heat flow for the OSR heat dissipation surface of the satellite's south and north boards...

AI Technical Summary

Problems solved by technology

The main disadvantage of the infrared lamp external heat flow simulation device is that the uniformity of the external heat flow provided is poor (about 10%), and a special heat flow measurement system is required

However, since the infrared cage heating belt is still discretely arranged, and the distance between the infrared cage and the satellite surface needs to meet the relevant technical requirements, the uniformity of the external heat flow provided by it is still not high.

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