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首页> 外文期刊>Journal of Spacecraft and Rockets >Aerodynamic Interference for Hypersonic Missiles at Low Angle of Attack
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Aerodynamic Interference for Hypersonic Missiles at Low Angle of Attack

机译：低攻角下高超声速导弹的气动干扰

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摘要

An Euler code is used to predict the flowfield over a hypersonic missile and to determine the carryover factors K_(W (B)), fin lift in the presence of the body, and K_(B(W)), lift produced by the body in the presence of the fins. The missile is assumed to have cruciform, delta fins in the + orientation and an aspect ratio of 1.529. Results are presented as a function of fin span at Mach 6, 8, and 10, for a 2-deg angle of attack. Two ratios of specific heats, 1.4 and 1.3, are considered to partially account for vibrational excitation effects. Both carryover factors have approximately the same variation with fin size as their slender body predictions. The values of K_(W(B)) and K_(B(W)) are 2 for a missile without fins. The value of K_(W(B)) decreases toward 1 and K_(B(W)) decreases toward 0.20 as the fin span becomes large. At a fixed fin size, K_(W(B)) decreases and K_(B(W)) increases as Mach number increases. At a fixed value of fin size and Mach number, both K_(W(B)) and K_(B(W)) increase slightly due to vibrational excitation effects.
机译：欧拉代码用于预测高超音速导弹上的流场，并确定结转因子K_（W（B）），即存在主体时的鳍升力，以及K_（B（W）），即由主体产生的升力在鳍的情况下。假定该导弹具有十字形，+方向的鳍片和1.529的纵横比。结果表示为2度迎角时6、8和10马赫时鳍跨度的函数。比热的两个比率1.4和1.3被认为部分地解释了振动激发效应。两种滞留因子的鳍片大小变化与其细长的身体预测值大致相同。对于没有鳍的导弹，K_（W（B））和K_（B（W））的值为2。随着鳍跨度变大，K_（W（B））的值朝1减小，K_（B（W））的值朝0.20减小。在固定的翅片尺寸下，随着马赫数的增加，K_（W（B））减小，而K_（B（W））增大。在鳍大小和马赫数为固定值的情况下，由于振动激发效应，K_（W（B））和K_（B（W））均略有增加。

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