机载导弹导轨式发射的数值仿真  

Numerical Simulation of Missile Rail Launching from Aircraft

作　　者：王海刚[1] 韩景龙[1] 

机构地区：[1]南京航空航天大学航空宇航学院,江苏南京210016

出　　处：《系统仿真技术》2011年第2期104-108,115,共6页System Simulation Technology

基　　金：国家自然科学基金资助项目(10872089)

摘　　要：提出了1种虚拟样机技术与CFD软件相结合的仿真方法能兼顾载机对导弹的气动干扰和导弹与导轨之间的接触问题。在Adams平台建立导弹发射仿真模型,并对吊挂与导轨的接触间隙进行精细建模,利用Fastran的嵌套网格技术计算非定常气动力并返回给Adams,仿真过程以松耦合的方式进行推进。仿真结果表明横向气动力和偏航力矩是造成吊挂与导轨相接触的主要原因,计算结果能为导弹轨上运动的安全性分析提供参考依据。A method for numerical simulation of missile rail launching from aircraft is presented by using Virtual Prototyping technique and CFD software. The rigid dynamics model was created in Adams with the contact problem between missile hanger and rail considered. The linear displacement of the missile＇s center of mass and angular movement data were transferred to Fastran. Missile followed the prescribed motion and the aerodynamic force was computed using Chimera method then returned to Adams, this process was loosely coupled. The simulated results can be used in safety analysis of missile＇s movement along the rail.

关 键 词：嵌套网格技术 接触问题 机弹干扰 松耦合 

分 类 号：TJ762.2[兵器科学与技术—武器系统与运用工程]