摘要
为实现导弹快速机动转弯或精确制导打击的目的,提出了采用直接力/气动力复合控制的技术方法。选取某典型布局导弹外形,针对直接力/气动力复合控制的耦合干扰问题,尤其是导弹机动过程中的直接力/气动力干扰问题,综合采用风洞测力试验和非定常数值计算及直接力/气动力操纵响应的风洞验证试验手段,研究了直接力喷流的静态干扰影响特性、俯仰拉起过程的喷流干扰动态效应以及直接力/气动力复合控制作用下的飞行响应特性。结果表明:位于导弹后体的直接力喷流产生了有利的气动干扰,俯仰运动过程中的非定常流动对喷口上游分离区范围影响较大,出现气动迟滞特性,且随角速率增加而增强;俯仰大迎角下力矩放大因子受俯仰运动影响更为明显,出现偏离静态的不利结果;直接力/气动力复合控制可以提高导弹的拉起速度,实现快速转弯和姿态的精确控制。
The direct force and aerodynamic force compound control technology is proposed for achieving the rapid turning and precise guided strike in high-maneuver tactical missiles.To investigate the coupling interaction problems in the compound control method,both wind tunnel experiments and unsteady numerical simulations are conducted on a typical missile configuration with transverse jet nozzles.Specially,dynamic response to the direct force/aerodynamic force control are carried out experimentally in wind tunnel.The results shows that the rear transverse jets provide beneficial interaction for aerodynamic characteristics.As a consequence of the pitching motion,the upstream separation region is largely affected by the unsteady interaction flow.And the aerodynamic coefficients experience obvious dynamic hysteresis,which is enhanced by the pitching motion rate.The amplification factor of pitch moment is more seriously affected under large angle-of-attack in the pitching motion,which is deviated from the static counterparts and leads to unfavorable impact.The direct force/aerodynamic force compound control is proven to be capable of increasing the pitching-up velocity,and it is a reliable option for rapid turning and precise attitude control.
作者
赵忠良
李浩
赖江
杨海泳
王晓冰
李玉平
ZHAO Zhongliang;LI Hao;LAI Jiang;YANG Haiyong;WANG Xiaobing;LI Yuping(High Speed Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,Sichuan,China;Computational Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,Sichuan,China)
出处
《空天防御》
2022年第3期1-9,共9页
Air & Space Defense
基金
某预先研究项目(41411030106)
某基础项目(2019-JCJQ-ZD-396-00)。
关键词
直接力
气动力
风洞试验
数值计算
气动特性
流动机理
direct force
aerodynamic force
wind tunnel test
numerical calculation
aerodynamic characteristics
flow mechanism
