Journal of Astronautics ›› 2018, Vol. 39 ›› Issue (9): 1039-1046.doi: 10.3873/j.issn.1000-1328.2018.09.012

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Suitability Analysis on Correlation Relation of Aerothermodynamics Entry Environment for Hypersonic Flying Vehicles

DU Tao, CHEN Min kang,LI Huang li, ZHANG Yun long, SHEN Dan   

  1. 1. Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China; 2. China Academy of Launch Vehicle Technology, Beijing 100076, China
  • Received:2018-02-27 Revised:2018-05-14 Online:2018-09-15 Published:2018-09-25


 The correlation relation is the credible method to predict the entry aerothermodynamics environment to avoid the deficiency for a wind tunnel experiment and numerical method in hypersonic vehicle design. In this paper, the suitability for the classical Stanton number-Reynolds number correlation relation is researched theoretically, which is deducted from the Kemp-Riddell formula at the stagnation point. The results show that the Stanton number-Reynolds number correlation relation is not universal and restricted with the Mach number, and the Stanton number-combination variable of Reynolds number and Mach number is more universal to correlate the wind tunnel and flight condition. Too low static enthalpy condition for a wind tunnel experiment will harm the correlation relation, which requires enhancing the inflow Mach number to compensate. Then several experiments are carried on 4 wind tunnels, several simulation results are also provided from several teams. The results validate the new correlation relation.

Key words:  Flight thermal environment, Correlation extrapolation, Wind tunnel experiment, Numerical simulation, Stagnation point

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