Verification method for thermal design of volume-produced satellites

Abstract

The invention relates to a verification method for thermal design of volume-produced satellites and belongs to the technical field of thermal control of spacecrafts. The verification method comprises firstly, selecting a first satellite on the same platform for a thermal balance test, obtaining thermal balance test foundation temperature data of satellites on all platforms in a design technology state, then, performing statistics on actually measured thermal loss data of instruments and equipment in each follow-up satellite and temperature data of instruments and equipment in a thermal vacuum test under high and lower working conditions, installing contact heat transmission coefficients on equipment in a thermal simulation analysis model for improvement and optimization by using temperature data of the thermal balance test of the fist satellite, so that the simulation model can accord with the actual technology state of the satellites, and finally, on the basis of the test data of the first satellite, comparing actually measured thermal loss of equivalent instruments and equipment of the follow-up satellites and differences between the thermal vacuum test temperature and the first satellite to estimate the thermal design adaptability of the follow-up satellites. According to the verification method, verification of thermal balance tests of the follow-up satellites on the same platform is cancelled, and the satellite development process is optimized.

Description

technical field [0001] The invention relates to a verification method, in particular to a thermal design verification method for mass-produced satellites, and belongs to the technical field of spacecraft thermal control. Background technique [0002] The navigation satellite adopts the whole-star small-batch production mode. According to the traditional single-satellite development model, after the first satellite of the platform is developed, the technical status is solidified, and the follow-up satellites are produced and developed in small batches according to the design status of the first satellite. [0003] According to the traditional satellite development model, for navigation satellites, each satellite needs to conduct a thermal balance test to verify whether the thermal design and equipment installation meet the requirements. If the traditional development mode is adopted, the test cost is high and the development cycle is long, which is not suitable for the small...

AI Technical Summary

Problems solved by technology

[0004] Due to the small-scale production, the product maturity of the instruments and equipment selected by the satellite is not consistent, which may lead to the difference in the actual heat consumption of the instruments and equipment used as the basis for thermal design. On the basis of not conducting thermal balance tests on the satellite, it is necessary to find a method to verify whether the thermal design can adapt to the change of the actual heat consumption of the instrument and equipment

[0005] In addition, most of the installation of instruments and equipment is carried out manually, such as the coating of thermal grease and the size of the opening of the multi-layer heat dissipation surface, which will also affect the installation status of the same equipment between satellites, and there are differences from the thermal design status