Chemical Nonequilibrium Viscous Shock-Layer Analysis over Ablating Surface of Superorbital Re-Entry Capsule

• 鈴木, 宏二郎

• 藤田, 和央

• 安部, 隆士

• Suzuki, Kojiro

• Fujita, Kazuhisa

• Abe, Takashi

Abstract

The aerodynamic heating environment with ablation injection and the mass loss rate of the ablator under the superorbital re-entry condition of the MUSES-C sample return capsule are numerically studied by solving the Viscous shock-layer (VSL) equations with the nonequilibrium chemistry of both the air and the ablation gas. The boundary conditions at the ablator surface are formulated by considering the surface oxidation and surface sublimation. Computational results on the variation of the surface mass loss rate with the wall temperature demonstrate that the diffusion-controlled regime and the sublimation regime are successfully described by the present model. The time history of the wall temperature at the stagnation point is estimated along the re-entry trajectory by assuming the energy balance at the surface. The streamwise distributions of the convective heating rate and the surface mass loss rate over the forebody of the capsule are calculated at the peak heating flight condition and their characteristics are clarified. The effects of the pyrolysis gas of hydrocarbon species on the convective heating rate are investigated. The possibility of wall heating augmentation due to the turbulence induced by the ablation injection is also discussed.

資料番号: SA0200012000

Journal

• The Institute of Space and Astronautical Science report. S.P. : Aerodynamics, Thermophysics, Thermal Protection, Flight System Analysis and Design of Asteroid Sample Return Capsule

  The Institute of Space and Astronautical Science report. S.P. : Aerodynamics, Thermophysics, Thermal Protection, Flight System Analysis and Design of Asteroid Sample Return Capsule 17 23-42, 2003-03

  宇宙科学研究所

Details

• CRID: 1050566774915431936
• NII Article ID: 120006834544
• NII Book ID: AA10455137
• ISSN: 0288433X
• Web Site: http://id.nii.ac.jp/1696/00033233/
• Text Lang: en
• Article Type: departmental bulletin paper
• Data Source:
  • IRDB
  • CiNii Articles