S1910104 有迎角再突入体のプラズマ流・通信ブラックアウト解析における予測性能評価について([S191-01]大気突入・減速技術(1),宇宙工学部門)

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タイトル別名
  • S1910104 Prediction Performance of Plasma Flow and RF Blackout around a Reentry Vehicle with an Angle of Attack

抄録

Numerical prediction model of plasma flow and electromagnetic waves around a reentry vehicle was validated based on experimental results of the radio attenuation measurement program (RAM-CII). Through the plasma flow simulations, the detailed distributions of the flow-field properties in the shock layer and wake region were successfully obtained by three-dimensional unstructured grid solver (FaSTAR) to consider angle of attack of the vehicle. The flow-field solver installed real gas effect models and could treat thermochemically nonequilibrium flow. Moreover, the distribution of the electron number density around the vehicle was clarified. A frequency-dependent finite-difference time-domain (FD2TD) method was used for simulations of electromagnetic waves. In the simulation, the physical properties were obtained from the results of the plasma flow calculation. In the present study, electromagnetic wave behaviors in an ionized gas region around the reentry vehicle were investigated in detail. Prediction performance of the combined model was evaluated with profile of the electron number density near the vehicle surface and a signal loss measured in communication between the vehicle and ground station.

収録刊行物

  • 年次大会

    年次大会 2014 (0), _S1910104--_S1910104-, 2014

    一般社団法人 日本機械学会

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