预测座舱盖自由抛放运动轨迹方法的研究  

Research on the prediction method of the trajectory for a free jettisoned aircraft canopy

作　　者：杨春信[1] 韩海鹰[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083

出　　处：《空气动力学学报》2006年第1期109-114,共6页Acta Aerodynamica Sinica

基　　金：航空科学基金资助项目(01E1050)

摘　　要：系统地阐述了模拟气动力作用下物体运动过程的两类方法,即非定常数值模拟和气动系数法,并给出气动系数法中气动系数的三种获取手段。模拟对称座舱盖自由抛放过程的算例表明由于采用气动系数的不同,气动系数法会得到不同的计算结果,其中利用非定常气动系数得到的计算结果与非定常模拟预测值最为吻合。Two kinds methods of simulating body motion under aerodynamic force, i. e CFD-6DOF and COEF-6DOF are overviewed systemically. Also the three calculation methods of aerodynamic coemcients in COEF-6DOF method are proposed. The example simulation the trajectory of a free jettisoned aircraft canopy show that COEF-3DOF method will have different result due to various aerodynamic coefficients and result of COEF-3DOF method with unsteady aerodynamic coefficients in good accord with the result of CFD-3DOF .

关 键 词：自由抛放 座舱盖 自动嵌套网格 气动力系数 非定常数值模拟 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]