Atmospheric pressure thermal test system of large stepping manned spacecraft

Abstract

The invention discloses an atmospheric pressure thermal test system of a large stepping manned spacecraft. A simulation chamber, a gas processing subsystem, a heating subsystem, a refrigeration subsystem, a dehumidification and ventilation subsystem and a parameter measurement and equipment control subsystem are mainly included. According to the test system, a large manned spacecraft can be pushedhorizontally into the simulation chamber, gas after heating or refrigerating is subjected to temperature cycle and control through a gas processing unit, the temperature range required by the spacecraft and the rate of temperature increasing and decreasing are achieved, and a certain uniformity and stability are maintained; and the thermal cycle test of the large manned spacecraft is realized, the thermal vacuum cycle test conducted by the atmospheric pressure thermal test system is more convenient than that conducted by a vacuum container, the process of temperature increasing and decreasingis controllable, startup and shutdown of the test are relatively flexible, the continuous operation ability is greater, costs are lower, and the atmospheric pressure thermal test system is especiallysuitable for equipping the manned spacecraft for the thermal test.

Description

technical field [0001] The invention belongs to the technical field of manned spacecraft ground tests, and in particular relates to a large-scale walk-in atmospheric pressure thermal test system used for manned spacecraft ground thermal cycle tests. Background technique [0002] In the development process of the spacecraft, it is a very important link to carry out the whole-star ground test assessment of the spacecraft. These system-level ground tests generally include mechanical tests, thermal tests, electrical tests, etc. They can not only check the design, but also eliminate the early failure of components and improve the reliability of the spacecraft, and the thermal test is the most important test for reliability screening. As stated in GJBl027A "Test Requirements for Vehicles, Upper Stages, and Spacecraft", "Electrical and electronic components containing electrical and electronic components must undergo multiple thermal cycle stresses in thermal vacuum and thermal cyc...

AI Technical Summary

Problems solved by technology

However, conventional atmospheric pressure thermal test systems are small in size and are only suitable for thermal cycle tests of single machines or small components

The environmental control of the atmospheric pressure thermal test system in a large-scale space has the problems of poor space temperature uniformity and narrow control temperature zone

[0005] The industry generally adopts a large-scale heating and cooling system outside the simulation room, and introduces / exports gas into the simulation room through complex air ducts and insulation measures to solve the problems of temperature uniformity and extreme low temperature control in large-scale spaces, which makes the system too complicated and A large number of air ducts occupy the interior space of the simulation room, increasing construction and later maintenance costs

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