| 直升机阻尼非线性地面共振的极限环分析 |
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| 引用本文： | 成志清,周传荣, 程金送.直升机阻尼非线性地面共振的极限环分析[J].航空学报,1994,15(5):552-557. |
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| 作者姓名： | 成志清 周传荣 程金送 |
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| 作者单位： | 南京航空航天大学振动所，航空工业总公司六０二所 |
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| 摘 要： | 采用一阶近似方法分析研究了直升机阻尼非线性地面共振系统的极限环特性,导出了有关公式,研制了计算程序；并以某型直升机为例,考察了机体系统状态、机体系统振动特性参数对地面共振系统极限环特性的影响,分析了非线性桨叶阻尼在抑制直升机地面共振中的作用,展示了极限环状态下旋翼转速对旋翼系统与机体系统之间能量传递的影响关系。
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| 关 键 词： | 地面共振－直升机 非线性阻尼 极限环 |
LIMIT CYCLE ANALYSIS OF GROUND RESONANCE OF HELICOPTER WITH NONLINEAR DAMPING |
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| Cheng Zhiqing,Zhou Chuanrong.LIMIT CYCLE ANALYSIS OF GROUND RESONANCE OF HELICOPTER WITH NONLINEAR DAMPING[J].Acta Aeronautica et Astronautica Sinica,1994,15(5):552-557. |
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| Authors: | Cheng Zhiqing Zhou Chuanrong |
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| Institution: | 1. Vibration Eegineering Institute,Nanjing University of Aeronautics and Astronautics,Nanjing,210016;2. China Helicopter Research Institute,Jingdezhen,333001 |
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| Abstract: | With the method of first order approximation,the characteristics of limit cycle of ground resonance system of helicopter with nonlinear damping have been analyzed.The relevent formulae have been derived,and corresponding cornputer program has been developed.Some model of helicopter being taken as an example,the influences of the states and the vibrntion modal param-eters of the fuselage system on the characteristics of limit cycle of ground resonance system have been investigated,the performance of nonlinear blade damping in the depression of ground reso-nance has been analvzed,and the relation between the rotating speed of rotor and the energy transference of rotor system to fuselage system has been shown. |
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| Keywords: | ground resonance-helicopters nonlinear damping limit cycle |
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