On-orbit thermal control coating radiation parameter measuring device

Abstract

The invention relates to the technical field of spacecraft thermal control measurement, in particular to an on-orbit thermal control coating measuring device, and discloses an on-orbit thermal control coating radiation parameter measuring device which comprises a cup body (1), a cup body heating sheet (2), a cup body thermistor (3), a cup body heat-proof component (4), a sensitive sheet (5), a sensitive sheet heating sheet (6), a sensitive sheet thermistor (7), a sensitive sheet heat-proof component (8), a sensitive sheet grounding component (9), a countersunk head polyimide screw (10), a polyimide heat-proof pad (11), an electric connector countersunk head screw (12), an electric connector (13), and an electric connector polyimide heat-proof pad (14). The on-orbit thermal control coating radiation parameter measuring device has the advantages that the structure is flat, so that the cup body is excellent in isothermality; the cup body and the sensitive sheet are simply connected with each other, so as to simplify the heat transmission route and effectively control heat leakage; the size of the sensitive sheet is enlarged, so that relative error caused by heat leakage and measurement is reduced, and the measuring accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of spacecraft thermal control measurement, in particular to an on-orbit thermal control coating measurement device. Background technique [0002] The on-orbit temperature of the spacecraft ultimately depends on the thermal radiation properties (solar absorption ratio, infrared emissivity) of the thermal control coating on the surface of the spacecraft. The coating monitoring device can be used to measure the radiation parameters of on-orbit thermal control coatings. On the one hand, the on-orbit degradation data of commonly used thermal control coatings can be obtained, which is of great significance for improving the thermal analysis and thermal design level of satellites and on-orbit thermal management of satellites. On the other hand, use the coating monitoring device to carry out the intelligent thermal control coating space loading test, and obtain the change of emissivity of the intelligent coating at ...

AI Technical Summary

Problems solved by technology

In recent years, the two on-orbit mounting tests of coating monitoring devices have been carried out by low-orbit satellites, namely Haiyang-2 satellite (in 2011, commonly used thermal control coating solar absorption ratio test, S781 white paint, black anodized , OSR film, single-sided aluminized polyimide film) and Shijian 9A satellite (2012, smart thermal control coating emissivity test, smart coating A / B, black anodized), the structure of the above coating monitoring device is generally Similarly, there are generally deficiencies in the areas of small sensitive sheets, complex connection relationships between parts, and uneven internal temperatures, which lead to large system errors caused by heat leakage and measurement, and the measurement accuracy is limited.

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