弹箭在直升机旋翼下洗流场作用下运动规律研究

A STUDY ON THE MOVEMENT OF ROCKET UNDER DOWN-WASH FLOW OF A HELICOPTER'S ROTOR

本文详细分析了弹箭在直升机旋翼下洗流场作用下所受的力及力矩 ,推导并获得了各力及力矩的表达式 ,在此基础上建立了弹箭在直升机旋翼下洗流场作用下的数理模型。通过数值仿真获得了弹箭在该下洗流场作用下的运动规律以及部分参数对弹箭运动的影响规律。研究结果为弹箭的弹道控制与修改提供了依据 。

Forces and moments exerted on rockets under the down wash flow of a helicopter's rotor were analyzed in detail. The corresponding formulae for the aforementioned forces and moments were deduced. Based on above mentioned formulae the mathematical and physical model of a rocket under helicopter rotor's down wash flow was established. With numerical simulation, the regularities of a rocket under helicopter rotor's down wash flow and the effects of launching parameters upon the rocket movement were obtained. These results provide a basis for further studies on rocket ballistic control and modification and were thus of reference value.