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首页> 外文期刊>International Journal of Modern Physics: Conference Series >AERODYNAMIC ANALYSIS OF A ROLLING WRAPAROUND FIN PROJECTILE IN SUPERSONIC FLOW
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AERODYNAMIC ANALYSIS OF A ROLLING WRAPAROUND FIN PROJECTILE IN SUPERSONIC FLOW

机译：超音速流动的滚圆翅片弹丸的气动分析

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摘要

In this paper, the roll characteristics of a rolling wraparound fin projectile have been investigated in supersonic region. Computation of the flowfield was performed using a time-marching, three-dimensional Euler equation in a body fixed rotating coordinate frame. First, the roll producing moment coefficients of a projectile were obtained from the flowfiled solution at various Mach numbers and compared with the experimental and numerical results. They showed favorable agreement with experimental results in magnitude and sign. Next, the roll damping moment coefficients of a rolling wraparound fin were computed and compared with correlation based on experiment data. The correlation gave a somewhat larger value in magnitude than the present computation. However, the computed values agreed well with correlation in the trend.
机译：在本文中，已经研究了超音速区域中滚动式绕翅弹的滚动特性。使用在身体固定的旋转坐标系中的时间行进的三维Euler方程进行流场的计算。首先，从流场解中得到各种马赫数下的弹丸的侧倾力矩系数，并将其与实验和数值结果进行比较。他们的实验结果在大小和信号上都显示出良好的一致性。接下来，基于实验数据计算出卷绕式散热片的滚动阻尼力矩系数，并将其与相关性进行比较。该相关性在大小上比当前计算值大一些。但是，计算值与趋势的相关性很好。

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