Research progress of aerodynamic thermal environment test and measurement technology

Ground wind tunnel tests and flight tests are the primary means of obtaining pneumatic heating data. In this paper, the development of the domestic hypersonic aerodynamic test and the heat flux measurement technology is analyzed and discussed. Firstly, the shape characteristics, the flight profile, the boundary layer transition and the aerodynamic thermal environment characteristics of the adjacent space hypersonic vehicles are analyzed. On this basis, the wind tunnel test simulation theory of the aerodynamic thermal environment is analyzed, and the domestic application for aerodynamic thermal measurement, wind tunnel test equipment and its simulation capability are introduced, focusing on the analysis of the development and trend of wind tunnel aerodynamic thermal environment measurement technology, including point measurement technology based on sensor measurement and non-contact measurement technology such as phosphorescence heat map technology and infrared heat map technology. Finally, the measurement principle and engineering application of the "built-in" and "embedded" measure-ment technologies are introduced for the flight test thermal environment measurement. The problems faced by the flight test aerodynamic thermal environment measurement are discussed. Both further research and present problems for thermal environment measurement technologies are proposed.