Method for computing infrared radiation and reflection radiation heat flows on surface of lunar orbit spacecraft

Abstract

The invention provides a high-precision method for computing infrared radiation and reflection radiation heat flows on the surface of a lunar orbit spacecraft. The method disclosed by the invention is based on integral computation formulas for the infrared radiation heat flows and the reflection radiation heat flows caused by the lunar surface to the surface of the lunar orbit spacecraft and is characterized in that lunar surface infinitesimal elements are divided through a uniform simulation method, discretization is carried out to the integral computation formulas, and accumulation of radiation heat exchange among infinitesimal element faces is converted; and according to energy balance of infrared heat flows and absorbed solar heat flows of each infinitesimal area of a lunar sunlight face, a computation method of lunar infinitesimal element face infrared radiation intensity is obtained. Through coordinate conversion and vector expression, computation of the infrared radiation heat flows and the reflection radiation heat flows caused by the lunar surface to the surface of the lunar orbit spacecraft is finally converted to vector (matrix) computation, so that programming computation becomes convenient. Meanwhile, the method is extensively universal and has the advantages that star infrared radiation heat flows and reflection radiation heat flows based on any star, any orbit and a spacecraft with any geometric shape can be computed.

Description

[0001] technical field [0002] The invention relates to the simulation analysis problem of the extra-space heat flow related to the moon received by the surface of the lunar orbiter, in particular to a calculation method for the high-precision lunar infrared radiation heat flow and the moon reflected radiation heat flow of the lunar orbiter. [0003] Background technique [0004] In the simulation analysis of space vehicle thermal environment analysis and thermal control design thermal analysis verification, the accuracy of heat flow calculation outside the space is directly related to the correctness and validity of the temperature field results of vehicle simulation analysis. The extra-space heat flux received by the spacecraft in orbit mainly includes solar radiation heat flux, planetary infrared radiation heat flux, and planetary reflected radiation heat flux. Among them, the calculation of planetary infrared radiation heat flux and planetary reflected radiation heat f...

AI Technical Summary

Problems solved by technology

In the on-orbit thermal analysis of the lunar spacecraft, people have made some attempts to simulate the infrared radiation of the moon. Some of them imitated the infrared radiation of the earth to calculate the average infrared heat flow of the moon. The infrared radiation of the moon is divided into steps, and the approximate stepped lunar infrared radiation heat flux is calculated. However, the assumptions and approximations in the above method make the calculated lunar infrared radiation heat flux have a large deviation from the actual situation. Therefore, it is necessary to study and propose a high-level Lunar Infrared Radiation Heat Flux and Lunar Reflected Radiation Heat Flux Calculation Method for Lunar Orbiter

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