无人机机载炸弹投放分离特性数值模拟研究  

Numerical Simulation Study of the Characteristic of Separation of UAV Airborne Bomb Release

作　　者：周培培[1] 郭少杰[1] 王斌[1] 张桂茹[1] 

机构地区：[1]中国航天空气动力技术研究院,北京100074

出　　处：《弹箭与制导学报》2017年第2期87-91,共5页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：通过在非结构动态重叠网格上耦合求解刚体六自由度运动方程和非定常N-S方程的方法,对无人机机载炸弹投放分离过程中的气动特性和运动轨迹进行了数值模拟研究,获得了炸弹运动过程中的轨迹、姿态等信息,分析了炸弹投放分离过程中的安全性问题。研究表明,在计算攻角范围内(α=1°、5°),无横风条件下炸弹的投放是安全的;有横风(5 m/s、10 m/s)条件下炸弹的投放是不安全的。By coupling resolving the 6-DOF motion equation of rigid body and unsteady N-S equation on unstructured dynamic overlapping grids, the numerical simulation of aerodynamic characteristics and the trajectory of UAV airborne bomb in the process of release and separa- tion was carried out. The trajectory and attitude of airborne weapon separation in the process of the bomb movement were obtained and the security issues in the process of bomb release and sepration were analyzed. The results showed that in the calculation of angle of attack range （α=1°、5°） , the bomb release was safe without crosswind, while the bomb realease was not safe when under a crosswind（5 m/s , 10 m/s）.

关 键 词：武器投放 重叠网格 六自由度 数值模拟 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]