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Experimental und numerical investigation of the aerodynamic characteristics of a generic transonic missile

机译:通用跨音速导弹空气动力学特性的实验和数值研究

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A study of the aerodynamic characteristics of two missile configurations has been performed using the data of an experiment, of a semi-empirical aerodynamic prediction code (Missile Datcom) and a RANS flow solver (DLR-TAU-Code). Considering the design of the configurations one is rather unconventional with large aspect ratio wings, whereas the other one has conventional wings with a small aspect ratio. The latter sustains large lift forces at high angles of attack due to the occurrence of leading edge vortices while the former performs better at low angles of attack. The comparison of the experimental data with the aerodynamic coefficients predicted by TAU shows a good agreement for both configurations in the entire α-range. Also non-linear characteristics are captured well by TAU. Regarding Missile Datcom, for the unconventional design the accuracy of the predicted data is reasonable. For the conventional design the accuracy is less accurate particularly the prediction of the center of pressure.
机译:使用实验数据对两种导弹构型的空气动力学特性进行了研究,分别是半经验的空气动力学预测代码(Missile Datcom)和RANS流量求解器(DLR-TAU-Code)。考虑到构型的设计,一个大纵横比的机翼是相当不常规的,而另一个则具有小纵横比的常规机翼。由于前缘涡旋的发生,后者在高攻角下承受较大的升力,而前者在低攻角下表现更好。实验数据与TAU预测的空气动力学系数的比较表明,在整个α范围内,两种配置都具有良好的一致性。 TAU还可以很好地捕获非线性特性。对于导弹Datcom,对于非常规设计,预测数据的准确性是合理的。对于常规设计,精度尤其是压力中心的预测精度较差。

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