Aerodynamic Design and Optimization of Supersonic Spin-Stabilize Round Body
Keywords:
Spin-Stabilized Projectile, CFD, Optimization, Kriging response SurfaceAbstract
The purpose of this paper is to design and analyze the aerodynamics characteristics of a spin-stabilized round shape body for enhancing the aerodynamic performance of projectile distance through supersonic regimes. In this research, the spin-stabilized round shape body 30 mm in diameters (XM-788 E1 and XM-789) are used as a benchmark model. In the first step, the static and dynamic aerodynamic coefficients of these shapes are evaluated using Computational Fluid Dynamic (CFD) in terms of K-ω SST turbulent model. The calculation results are then employed to validate with available experimental data to ensure the accuracy. Next, the Kriging response surface and Shifted Hammersley Sampling technique are used as an optimization method for drag minimization. CFD is then employed for drag prediction and stability analysis. The optimization result show that the optimized body provides up to 20.52% for drag reduction, while remaining statically and dynamically stable over the whole range of operating Mach number.
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