| 系留气球时域响应分析 |
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| 引用本文： | 张向强,顾逸东,姜鲁华.系留气球时域响应分析[J].北京航空航天大学学报,2006,32(9):1015-1018. |
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| 作者姓名： | 张向强 顾逸东 姜鲁华 |
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| 作者单位： | 中国科学院 光电研究院, 北京 100080 |
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| 基金项目： | 致谢感谢北京航空航天大学无人机所的马铁林老师在导数估算时给予指点. |
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| 摘 要： | 为研究系留气球稳定性,建立了系留气球的三维非线性动力学模型.缆绳采用有限差分法,球体采用经典的六自由度方程,其中气动力导数以静导数、动导数和附加质量表示.以主节点运动为边界条件,以静态构型为初始条件,建立完整耦合动力学方程.利用直接求解非线性偏微分方程的方法对该系统进行时域响应分析,考察了风速对纵向和横侧向稳定性的影响,并给出相应的响应曲线.直接求解非线性耦合方程的成功,表明该数学模型及其解法是可行的.
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| 关 键 词： | 系留气球 稳定性 飞行力学 非线性耦合模型 |
| 文章编号： | 1001-5965(2006)09-1015-04 |
| 收稿时间： | 2005-11-30 |
| 修稿时间： | 2005年11月30日 |
Time-domain response analysis of a tethered aerostat |
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| Zhang Xiangqiang,Gu Yidong,Jiang Luhua.Time-domain response analysis of a tethered aerostat[J].Journal of Beijing University of Aeronautics and Astronautics,2006,32(9):1015-1018. |
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| Authors: | Zhang Xiangqiang Gu Yidong Jiang Luhua |
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| Institution: | Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | To stability analysis of the tethered balloon,a three dimensional nonlinear mathematical model of tethered aerostat was assembled.The tether was modeled using finite difference approximation.The balloon was modeled using rigidbody dynamic model including the static derivative,dynamic derivative and added mass.The coupling equation was assembled with the boundary condition of attached node and the initial condition of static.The time-domain response analysis was given by solving the nonlinear partial differential equations directly.The longitudinal and lateral stability was investigated by inputting step wind.The response curves of time domain also were output.The success of solving the nonlinear proved that the mathematical model is feasible. |
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| Keywords: | tethered aerostat stability flight mechanics nonlinear mathematical model |
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