运输机空投货物建模与任务性能影响因素研究  

Study of transport aircraft cargo airdrop modeling and mission performance influence factors

作　　者：张喆[1,2] 刘亚辉[1,2] 刘智汉[1,2] 孙秀霞[3] 

机构地区：[1]中国飞行试验研究院飞机所,陕西西安710089 [2]中航工业飞行仿真航空科技重点实验室,陕西西安710089 [3]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《飞行力学》2017年第3期6-10,共5页Flight Dynamics

基　　金：国家自然科学基金资助(61273141);航空科学基金资助(20141396012)

摘　　要：针对当前运输机空投货物模型可拓展性不强的问题,提出了分离体的建模方法。在无需分析货物与飞机整体质心变化的情况下,分别以货物和飞机为对象进行受力分析,推导了货物与飞机之间的相互作用力,建立了更加贴近实际的运输机单件货物空投和连续空投的动力学模型。最后,通过数值仿真,分析了飞行速度和牵引伞牵引比对空投任务性能的影响。结果表明,飞行速度和牵引比越大,飞机在货物干扰作用下的状态变化量越小。For the poor expanding property of the current transport aircraft cargo airdrop model, the sepa- ration body modeling method is established. The forces of the aircraft and cargo are analyzed respective- ly. The dynamic model of the transport aircraft single airdrop as well as the continuous airdrop process is derived, and the overall center of gravity of the aircraft and cargo is not required to be known. The influ- ences of the aircraft speed and traction ratio on the airdrop mission performance are analyzed via the simu- lation results. It can be concluded that the higher the aircraft speed and traction ratio, the smaller the disturbances that the cargo impacts on the aircraft.

关 键 词：动力学建模 空投 系统仿真 任务性能 

分 类 号：V212.1[航空宇航科学与技术—航空宇航推进理论与工程]