摘要
为研究大气紊流对软管锥套运动的影响,将空中加油软管质点离散化,从软管、稳定伞空间受力出发,建立了软管锥套的动力学模型,并对其运动进行了仿真计算和分析。仿真结果表明,在晴空大气紊流作用下,锥套会产生高频振荡。高度一定时,大气紊流对软管锥套运动的影响随加油机速度的增大而减小;真速一定,加油机高度小于11 km时,锥套运动幅值和高度没有单一的线性关系,当高度大于11 km后,锥套运动幅值随高度的增加而减小;表速一定时,大气紊流对软管锥套运动的影响随加油机高度的增大而减小。
In this paper,a dynamic model for an aerial refueling hose-drogue motion is presented.In the model,the trailing refueling hose-drogue are modeled by using an array of discrete point mass nodes that represents the physical properties of the hose-drogue.The motion of the hose-drogue in the cloudless air turbulence is simulated and analyzed.The results shows that the cloudless air turbulence can induce high frequency oscillation of the hose-drogue.The influence of air turbulence on hose-drogue＇s motion decreases with the increase of tanker＇s velocity at a constant height,it is also decreases with the increase of tanker＇s height at a constant indicated velocity.Under the condition of constant tanker＇s velocity,the range of hose-drogue＇s motion due to air turbulence has some randomness while tanker＇s height is less than 11km,but it decreases with the increase of tanker＇s height while the tanker is higher than 11km.
出处
《飞行力学》
CSCD
北大核心
2010年第5期20-23,共4页
Flight Dynamics
基金
航空科学基金资助项目(20080596014)
关键词
空中加油
软管锥套
大气紊流
仿真
aerial refueling
hose-drogue
air turbulence
simulation
