Effect of fin-boat tail interference on the drag of projectile and rocket aircraft
|更新时间:2026-05-06
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Effect of fin-boat tail interference on the drag of projectile and rocket aircraft
Advances in Aeronautical Science and EngineeringPages: 1-10(2026)
作者机构:
西安现代控制技术研究所 气动力研究中心, 西安 710065
作者简介:
基金信息:
DOI:
CLC:V211.46
Received:07 January 2026,
Revised:2026-04-28,
Online First:06 May 2026,
稿件说明:
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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)
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.DOI:
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)DOI:
Effect of fin-boat tail interference on the drag of projectile and rocket aircraft
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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