舰载直升机着舰碰撞建模方法  

Collision modeling method of ship-board helicopter landing

作　　者：李友毅[1] 张志春[1] 熊壮[1] 肖景新[1] 李国辉[1] 

机构地区：[1]空军航空大学军事仿真技术研究所,吉林长春130022

出　　处：《系统工程与电子技术》2015年第7期1691-1696,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(61102120)资助课题

摘　　要：逼真的舰载直升机着舰仿真应对着舰过程中机舰碰撞给出精确建模。着舰过程中直升机何时与舰船碰撞及碰撞后产生的力是建模难点。针对这一问题提出了一种着舰碰撞建模方法。该方法中起落架被简化为弹簧阻尼筒结构,机舰碰撞时的力与起落架压缩量、机舰相对速度有关。通过坐标转换,依据起落架在船体坐标系下坐标判断机舰是否碰撞,并且计算起落架压缩量大小。依据舰船速度在机体系下投影计算机舰相对速度。最后开发了直升机、舰船仿真模型对该方法做了验证。验证结果表明:该方法能够实时计算出直升机与舰船碰撞时直升机起落架所受力,直升机与舰船能够协调一致运动,可以满足机舰仿真需求。The accurate simulation of ship-board helicopter landing should model the collision between heli-copter and ship accurately.In the course of landing,when the helicopter collide with the ship and the generated force of collision is the difficulty of modeling.A method of collision modeling between helicopter and ship is pro-posed in order to solve the problem.The undercarriage is simplified as the spring-damper structure in the method. The force of collision is related with the compression of the undercarriage and the relative velocity between the helicopter and the ship.Collision and the compression of the undercarriage could be estimated according to the undercarriage coordinate in the ship body reference frame.The relative velocity between the helicopter and the ship could be calculated via the ship velocity transform in the helicopter body reference frame.In the end,the helicopter and ship simulation models are developed to validate the method.The results show that the method could compute the collision forces which is generated by the undercarriage,and the helicopter could move with the ship concertedly.It could fulfill the need of simulation of ship-board helicopter landing.

关 键 词：舰载直升机 着舰碰撞 坐标转换 起落架模型 仿真验证 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]