摘要
在大展弦比飞行器的飞行仿真中,通常需要建立飞行器的非质点模型,针对非质点飞行器模型的仿真需求,提出一种能为飞行器多个局部位置同时提供大气紊流数值的仿真方法.利用相关函数法生成飞行器质心沿飞行轨迹方向的大气紊流数值,根据质心处的大气紊流数值和相关关系,采用蒙特卡洛方法求解出飞行器非质心位置的大气紊流数值,从理论上证明该方法所生成的大气紊流数值能够满足相关性要求.仿真结果表明,该方法在满足飞行器多个位置大气紊流数值沿飞行轨迹方向相关性的同时,还保证了各个位置点之间的相关性,适合非质点飞行器模型的大气紊流仿真.
In the flight simulation of aircraft with the high aspect ratio,a non-particle model for aircraft usually needs to be established. Aiming at the requirement for simulating the non-particle aircraft model,a simulation method which can provide the atmospheric turbulence values for aircraft at multiple partial locations was proposed. The atmosphere turbulence values with the centroid of aircraft along the flight track were generated by the correlation function method. According to the atmosphere turbulence values at the centroid and the correlation,the atmosphere turbulence values at the non-centroid were calculated by Monte Carlo method. It is theoretically proved that the atmosphere turbulence values acquired by this method can satisfy the correlation requirement. The simulation results indicate that this method meets the correlation of atmosphere turbulence values for aircraft at multiple partial locations along the flight track,and simultaneously guarantees the correlation between different partial locations. It is suitable for the flight simulation of non-particle aircraft model.
出处
《沈阳工业大学学报》
EI
CAS
2010年第1期22-26,共5页
Journal of Shenyang University of Technology
基金
国家"十一五"预研项目
关键词
大气紊流
飞行仿真
相关函数
蒙特卡洛法
四点模型
风场模型
数值仿真
atmosphere turbulence
flight simulation
correlation function
Monte Carlo method
four-point model
wind field model
numerical simulation
