Abstract
The determination of aerodynamic characteristics is necessary for designing a re-entry vehicle. This is an essential input to study the static and dynamic stability of the configuration and to provide inputs for structural, thermal and trajectory design and analysis. Studies related to the flow field simulation based on CFD and the aerodynamic characteristics of a typical re-entry body, crew module, in supersonic flow regimes, are presented in this paper, along with the detailed analysis. CFD++, a commercial RANS solver with 2-equation realizable k-ε turbulence model is used for the 3-D simulations, and Pointwise is used for structured grid generation. The effect of Mach number ranging from 1.2 to 4, and angle of attack ranging from 0° to -15°, on CL, CD, and Cmcg, is thoroughly studied, after validation of the results at M= 4. Surface contributions of different parts of module are analysed along with effect of centre-of-gravity location on trim angle of attack.
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