| In the Informationization battle of the future，Unmanned aerial vehicle (UAV) is betterthan manned aircraft for its overall comprehensive performance and widely applied toinvestigate the situation of the enemy, the characteristics of targets, fixed-point cruise in themilitary field，Unmanned aerial vehicle (UAV) military capabilities are constantly beingimproved In order to adapt to the diversification of war way。Of unmanned aerial vehicle(UAV) in the target of attack, the airborne missile can reach the effect of precise targets, andin the process of the missile launch, carrier aircraft and missile separation condition iscomplex, involving multi-body separation problems。At the instant of the missiles from theaircraft, missile launch for carrier aircraft aerodynamic effect is significant, and the resultseriously affected the stability of carrier aircraft continued to fly. By studying unmannedaerial vehicle (UAV) in the process of the missile launch, carrier aircraft and missileaerodynamic interference problem when separation,we can effectively control the carrieraircraft after missile launching, and can improve the precision of airborne missile to thetarget.Research process based on computational fluid dynamics theory, combined with theunstructured dynamic grid technology[1]，and six degrees of freedom ballistic equations ofmotion[2], using the Fluent software to simulate the carrier aircraft and missile separation. Inthe study of using CATIA software model simplified drone missile launch from UAV，due tothe relative motion of the missiles and unmanned aerial vehicle (UAV) in the process of themissile launching，and considering the complex geometric structure, unstructured grid can beapplied to complicated geometrical body and can get higher quality。The grid around themissile belong to the movement of the grid system，and the grid around the UAV belong to the static grid system。The calculated flow field is initialized and by using Fluent software，then defineing the type of flow field and boundary conditions，monitoring the flight data ofthe UAV。After the completion of the set，the numerical simulation will be done。 analysisof aerodynamic interference in the process of missile launching By the results of simulation。We learned that the jet stream of the missile has great influence on the flow field around thecarrier aircraft wing after launching of the missile，and the influence results the unmannedaerial vehicle (UAV) flight producing the corresponding change, because the missile mountedin the wing position is different, then the carrier aircraft flight attitude varies a lot, and theimpact of the also has the very big difference. |
