Experimental research on thermal vibration characteristics of wing structure for high-speed flight vehicles in high-temperature environment

Abstract

It is crucial for the safety design of high-speed vehicles to obtain the information on the parameters of the vibration characteristics of the wing structures of a long-range high-speed vehicle by an experimental method in a complex environment with high temperatures and intense vibrations. In this report, a high-temperature environment test system and vibration test system were combined to generate a controlled thermal environment for a hollow wing structure by applying infrared radiation heating while exerting vibration excitation on the wing. Furthermore, by transmitting the structural vibration signal of the hollow wing through a self-designed high-temperature extension device to the non-high temperature zone for data collection and analysis, we measured the relevant parameters of the vibration characteristics, such as natural frequency and vibration mode, in a force-heat complex environment with temperatures reaching 900°C. The results provide an important basis for the dynamic characteristics analysis and safe and reliable design of hollow wing structures for long-range, high-speed flight vehicles under a high-temperature and intense vibration environment.