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Numerical and Analytic Simulation of the DynamicStability Derivative of Blunt Cone

Liu Wei(Department of Aerospace Technology, NUDT, Changsha, 410073)Shen Qing; Zhang Lumin; Zhang Hanxin(China Aerodynamics Research and Development Center, Mianyang, 621000)  
In this paper, the supersonic damping-in-pitch derivatives of blunt body are calculatedwith two methods. One is simulant unsteady viscous flow field by solving N-S equations, and anotheris the analytic method of unsteady embeddy Newtonian theory. According to the numerical method,the precision of unsteady flow calculation is improved by using sub-iteration. Similar results are abtained through the two methods. The numerical method can be applied to general flow calculation (3 M 20,0° α 20°).
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