摘要
为了提高鸭式布局制导炮弹的弹道控制性能,该文研究了一种通过匹配弹体稳态转速和攻角摆动频率以形成较大有效升力的有控弹道参数设计方法。给出了稳态转速的近似设计公式,提出一种精度较高的弹道法向诱导速度估算公式,并分析了其主要影响因素。仿真结果表明,采用该方法设计稳态转速与法向诱导速度,可在保持稳定飞行的前提下,有效提高制导炮弹的弹道控制能力,不同气动外形参数方案对应的诱导速度值相差可达25%。研究结果可为该类有控弹箭的弹道参数设计提供参考。
To improve the performance of a guided projectile equipped with a pair of canards,an approach of designing the controllable trajectory parameters is investigated here,which matches the projectile's steady-state spin velocity and frequency of angle of attack to obtain much more effective lift forces.The approximate design formula of the steady-state spin velocity is given.An estimation formula for the normal induced velocity is also proposed,and some main influencing factors are analyzed.The simulation results indicate that the capability of trajectory control can be enhanced effectively under the premise of stable flight by adopting this approach.The difference of induced velocities for different schemes of aerodynamic configurations can reach 25%.These results can provide a useful tool for the design of guided projectiles.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2011年第2期173-177,共5页
Journal of Nanjing University of Science and Technology
关键词
制导炮弹
鸭舵控制
稳态转速
法向诱导速度
guided projectiles
canard control
steady-state axial spins
normal induced velocity
作者简介
常思江(1983-),男,博士生,主要研究方向:弹箭飞行与控制技术外弹道仿真与设计,E—mail:ballistics@126.com;
通讯作者:王中原(1958-),男,教授,博士生导师,主要研究方向:弹箭飞行控制,弹道飞行弹道理论与数值模拟,E-mail:zywang@mail.njust.edu.cn。