| 一种改进的非定常气动力拟合方法 |
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| 引用本文： | 何锃,顾松年.一种改进的非定常气动力拟合方法[J].航空学报,1993,14(7):402-405. |
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| 作者姓名： | 何锃 顾松年 |
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| 作者单位： | 西北工业大学,西北工业大学 324信箱 西安 710072 ,324信箱 西安 710072 |
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| 摘 要： | 颤振主动抑制系统(AFSS)开环模型建模的关键之一是非定常气动力的模化。本文讨论了现有几种拟合方法的优缺点;提出了一种改进的非定常气动力拟合方法。实际算例结果表明:用本文方法得到的模型,能描述气弹系统的主要特征。
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| 关 键 词： | 颤振主动抑制系统 非定常气动力拟合 建模 颤振速度 |
| 收稿时间： | 1991-08-22 |
| 修稿时间： | 1992-05-15 |
AN IMPROVED APPROACH TO UNSTEADY AERODYNAMIC FORCE FITTING |
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| He Zeng,Gu Song- nian.AN IMPROVED APPROACH TO UNSTEADY AERODYNAMIC FORCE FITTING[J].Acta Aeronautica et Astronautica Sinica,1993,14(7):402-405. |
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| Authors: | He Zeng Gu Song- nian |
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| Institution: | Box 324, Northwestern Polvtechnical University. Xi'an, 710072 |
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| Abstract: | In this paper, the features of the methods o! Roger. Vepa Edwards and Karpel are discussed. A proper shortcoming of the three methods is that they are not suitable for engineering practice. Based on the synthesis of the methods of Vepa Edwards and Karpel, an improved approach in which the shortcomings of the aforementioned methods are overcome is proposed by authors of this paper. A numerical example is given. Numerical results show that the aeroelastic system model obtained from the authors' approach can reflect the major characteristics of the system, and therefore the authors' approach is effective and feasible. |
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| Keywords: | active flutter suppression system unsteady aerodynamic force fitting modeling flutter velocity |
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