The heat-calibration wind tunnel (HCWT) is a kind of the important experiment system which is used to simulate the heat test environment of high temperature and high-speed airflow [1]. The test environment of high temperature and high-speed airflow is formed by the intense combustion of the high-speed airflow and a certain flow rate of aviation kerosene in the combustor. Temperature test under conditions of high temperature and high-speed airflow is very important in the field of aerospace technology, particularly in testing of the aero-engine and the design development, and in the dynamic calibration for high temperature sensors. To ensure the HCWT to provide a stable test environment of temperature, the gas temperature of the HCWT needs to be controlled effectively.