Effect of Uncertainty of Ground Simulation Test on the Thermal Performance of ACR-1 White Paint under NUV Irradiation

The uncertainty of near ultraviolet (NUV) simulation test on spacecraft materials are analyzed firstly, and then the NUV ground simulation test of ACR-1 white paint is used as an example to study the influence of NUV exposure uncertainty on the variation of test results. It can be seen that the solar absorption of the ACR-1 white paint decreases at first and then increases exponentially against the NUV exposure. For a certain magnitude of NUV exposure, the solar absorptance and its relative deviation of the ACR-1 white paint varies positively with the uncertainty factor. With the continuance of NUV irradiation, the relative deviation of the solar absorption of the ACR-1 white paint increases at first and then gradually decreases to a negligible level.