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Acta Armamentarii ›› 2022, Vol. 43 ›› Issue (10): 2657-2667.doi: 10.12382/bgxb.2021.0523

• Paper • Previous Articles    

Boundary Layer Transition Flight Measurement and Implementation

OU Chao1,2, LONG Yaosong1, YANG Qingtao3, XIAO Hanshan2, ZHOU Yu4, YANG Kai3   

  1. (1.School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China; 2.Aerospace Technology Institute of China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China; 3.Hypervelocity Aerodynamics Institute of China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China; 4.Computational Aerodynamics Institute of China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China)
  • Online:2022-06-07

Abstract: For the needs of hypersonic boundary layer transition flight test and research, through integrating the variable thickness thin wall temperature test and heat flow identification method, where thin wall temperature measurement is used to identify the surface heat flux, then aircraft surface transition position can be measured. Considering the requirements of surface aerodynamic heating and the vibration environment during the high speed flight of the aircraft, the integrated module of the measuring structure and the aircraft structure is designed to improve the overall load resistance of the measuring structure. The thermal-vibration test system is to test the thermal measuring components under the ground simulation condition of flight state, and the safety and reliability of the measuring structure are verified. The results of ground thermal-vibration and flight tests show that the transition measuring structure can withstand the aerodynamic heating and vibration environment under flight conditions, respond quickly to and accurately reflect the changes of heat flow in the aerodynamic heating environment, and accurately capture the hypersonic boundary layer transition phenomenon under flight conditions. The measured data can provide calibration data for the prediction and calculation model of hypersonic transition.

Key words: boundarylayertransition, flighttest, thermal-vibrationtest, calorimeterinstrument

CLC Number: