摘要
为了提高小口径火箭弹的射击精度,提出了一种伸缩式鸭舵修正方案。通过分析鸭舵的修正力建立了弹道修正模型,分析了鸭舵修正的最佳起始点和启动角度,通过工程计算和CFD仿真对伸缩鸭舵的气动力系数和修正力进行了数值仿真。最后通过风洞实验验证了伸缩式鸭舵的二维修正能力,鸭舵舵片在1.5 Ma来流作用下产生的修正控制力为22 N,与数值仿真相吻合。该结果对伸缩式鸭舵的飞行实验和制导化工程应用具有重要意义。
To improve the concentration of small caliber rockets, a correction method based on retractable canard was presented. By analyzing the correction force of retractable canard, the 6-DOF trajectory correction models were established. The best starting point and starting angle for correction of canard were analyzed. Numerical simulation for aerodynamic coefficients and correction force of correction projectiles with retractable canard was made by engineering calculation and CFD simulation. Two-dimension correction capability of retractable canard is verified by wind tunnel experiments, which show that the correction force by retractable canard is 22 N at 1.5 Ma, and is conformed to that of the numerical simulation. This result is of great importance for the flight experiment and the guided engineering applications of retractable canards.
出处
《中国惯性技术学报》
EI
CSCD
北大核心
2015年第4期477-482,共6页
Journal of Chinese Inertial Technology
基金
国家自然科学基金(60908037)
关键词
伸缩鸭舵
数值仿真
风洞实验
修正能力
retractable canard
numerical simulation
wind tunnel experiments
correction capability
