Temperature-centrifugation composite environment assessment test device and test method

Abstract

The invention discloses a temperature-centrifugation composite environment assessment test device and a test method. The test device comprises a centrifuge test system, a thermal loading unit and a data monitoring processing unit; the centrifuge test system comprises a centrifuge and a fairing; and the thermal loading unit is integrally mounted at the far end of a big arm of the centrifuge, the fairing is mounted outside the thermal loading unit in a sleeving manner, a vacuum environment is arranged inside the fairing, and a test piece is arranged in the thermal loading unit. According to thedevice and the method, vacuum, high temperature, centrifugal load and load history under action scenes such as space isotope heat source product ground emission, space attitude adjustment, space detection, landing and the like can be accurately simulated; a complete data testing system is arranged, multiple parameters such as the temperature, the strain, the vacuum degree and the product state canbe detected in an integrated mode in the testing process, and the product response situation of a tested product under the temperature-centrifugation composite environment can be accurately obtained.

Description

technical field [0001] The invention belongs to the technical field of isotope heat sources, and in particular relates to a temperature-centrifugal composite environment assessment test device and a test method. Background technique [0002] The isotope heat source (power supply) is based on the Seebeck effect of the temperature difference material, and uses the phenomenon of radioactive isotope (238PuO2) decay to release heat energy to obtain heat or electricity. Because of its long working life (decades or even longer), high reliability (release Long-term, stable heat) and other characteristics have been widely used in the field of deep space exploration. Typical applications include the application of isotope power sources in the Jupiter exploration mission of Galileo in the United States, the use of isotope heat sources in the lunar surface exploration mission Luna-21 of the former Soviet Union, and the use of isotope heat sources in the deep space probe of my country's ...

AI Technical Summary

Problems solved by technology

[0009] 1. Insufficient load simulation capability: the above loading methods, such as blowing hot air, heating film or flexible heating belt winding, can only realize the simulation of the product response temperature of tens of degrees, 200°C, and 250°C, and cannot realize the high temperature of the space isotope heat source The loading conditions of the thermal load (take a certain type of space isotope heat source as an example, in order to ensure that the structural simulation part is thermally equivalent to the real product, the structural simulation part needs to be heated to 550°C);

[0010] 2. The loading of the load cannot be equivalent to the real environment: in the real environment, the use environment of the isotope heat source is a negative pressure and vacuum environment, which is different from the standard atmospheric environment, and the heat transfer characteristics of the product have undergone great changes

[0011] 3. The test method has not yet been established: In traditional tests, the test objects are weapons or spacecraft, etc.

This is because the above-mentioned technical means fail to simulate the high temperature-centrifugal composite environment in a vacuum environment.

In this environment, the traditional product installation methods and test methods are quite different from the fixed test methods under normal temperature and pressure.

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