硬式空中加油装置运动建模与仿真研究

针对由加油机和硬式加油伸缩管构成的硬式空中加油多体动力学系统,在已有的加油机运动仿真模型的基础上,考虑加油机的尾流场扰动作用,采用基于拉格朗日方程的速度传递矩阵法,建立了系统运动仿真模型。通过运动仿真,对伸缩管的动态特性和系统的紊流扰动响应特性进行了研究。仿真结果表明,硬管的动态响应特性较差、阻尼偏小,且俯仰运动与偏航运动耦合,需控制系统予以改善并实现解耦操纵;轻微的紊流对硬管的姿态具有较明显的扰动作用,通过稳定加油机的航迹,能够显著改善硬式加油装置的抗紊流特性。

Modeling and simulation for boom aerial refueling device

The multi-body dynamic system of boom serial refueling device consisted of tanker and refueling boom was modeled using velocity transformation.The existing simulation model of tanker was used and the tanker wake was considered in the modeling.Then,the dynamic characteristics and the characteristics of response to turbulence were researched.The simulation results show that the dynamic characteristics of boom are poor and the damping is small.Pitch and yaw movements of boom are coupled.The boom control system needs to improve the characteristics and decouples the pitch and yaw controls.In addition,the light turbulence has an obvious disturbing effect on the boom attitude.The anti-turbulence characteristics of the boom aerial refueling device can be remarkably improved by stabilizing the trajectory of the tanker.