Design of CCD thermal control system for SuperView satellite remote sensor and its start debugging in-orbit

Abstract

With the continuous improvement of the resolution of the space remote sensing camera, the temperature stability requirements of the remote charge coupled device (CCD) have gradually become more stringent. This paper presents and designs a distributed heat source precise temperature control Loop heat pipe (LHP) structure which is different from the traditional LHP structure, and realizes a unified and effective thermal management system which can accurately control the temperature of four heat sources. The results show that the LHP system has excellent heat carrying capacity and accurate temperature control effect on distributed heat source. In 2016, the LHP system was applied to the in-orbit temperature control of the remote CCD of SuperView satellite and has been run for nearly 48 months in orbit thus far. The temperature stability of the four CCD heat source devices controlled is superior to ± 0.4 °C. The design method and on orbit flight data of the distributed heat source precise temperature control LHP system in this paper will have a great reference value for the subsequent application of LHP system in the space temperature control field.