西安现代控制技术研究所 气动力研究中心, 西安 710065
刘乐(1996-), 男, 硕士, 工程师。 E-mail: liule_0229@foxmail.com
收稿:2026-01-07,
修回:2026-04-28,
网络首发:2026-05-06,
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刘乐,豆子皓,陈小龙. 尾舵—船尾干扰对弹箭飞行器阻力特性的影响[J]. 航空工程进展.
LIU Le,DOU Zihao,CHEN Xiaolong. Effect of fin-boat tail interference on the drag of projectile and rocket aircraft[J]. Advances in Aeronautical Science and Engineering.(in Chinese)
船尾布局是减小弹箭飞行器底部阻力的有效措施,飞行器舵面多布置在尾端,会干扰船尾流动,对飞行器阻力特性产生影响。为了研究尾舵对船尾的干扰效果,采用数值模拟方法在跨声速段对带有尾舵和船尾的弹箭飞行器展开研究,分析尾舵安装位置变化对飞行器阻力特性的影响,研究船尾附近的流场特性以及压力、压力梯度的变化,揭示阻力改变的原因,并研究在尾舵干扰下船尾形状改变时,船尾与底部阻力的变化规律。结果表明:随着尾舵向后移动,船尾附面层逆压梯度增大,流动发生分离,船尾和底部压力降低,飞行器阻力逐渐增大。在尾舵后移的情况下增大船尾拐角处的倒圆半径,可以降低飞行器阻力;在尾舵后移的情况下增大船尾角度,飞行器阻力呈先减小后增大的规律。
The boattail configuration is an effective measure for reducing the base drag of projectile and rocket aircraft. The tail fins of the aircraft are usually located at the tail end and interfere with the boattail flow, thereby affecting the drag characteristics. To investigate the interference effect of the tail fins on the boattail, numerical simulations are performed on the projectile and rocket aircraft equipped with tail fins and a boattail in the transonic regime. The influence of the tail-fin installation position on the drag characteristics is analyzed, and the flow-field characteristics near the boattail as well as the variations of pressure and pressure gradient are examined to reveal the causes of the drag changes. Furthermore, the variations of the boattail and base drag are studied when the boattail shape is altered under the interference of the tail fins. The results show that as the tail fins move rearward, the adverse pressure gradient in the boattail boundary layer increases, flow separation occurs, the pressures on the boattail and the base decrease, and the vehicle drag gradually increases. When the tail fins are shifted rearward, increasing the fillet radius at the boattail corner can reduce the vehicle drag; when the tail fins are shifted rearward, increasing the boattail angle causes the vehicle drag to first decrease and then increase.
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