| 干摩擦阻尼对旋翼动稳定性的影响研究 |
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| 引用本文： | 胡国才,刘湘一,陈军民,孙宏岩.干摩擦阻尼对旋翼动稳定性的影响研究[J].海军航空工程学院学报,2006,21(1):101-104. |
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| 作者姓名： | 胡国才 刘湘一 陈军民 孙宏岩 |
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| 作者单位： | 1. 海军航空工程学院飞行器工程系,山东,烟台,264001
2. 海军装备部,北京,100076 |
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| 摘 要： | 为了提高旋翼动稳定性理论模型的分析精度,需要精确地确定旋翼系统的结构阻尼系数。为此建立了旋翼变距拉杆球头关节干摩擦的阻尼模型,计入了球头关节的离心力对干摩擦阻尼的影响,然后用模型旋翼试验数据对稳定性分析结果进行了验证。结果表明,采用文中建立的干摩擦阻尼模型,预估的旋翼摆振后退型模态阻尼与试验数据吻合。
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| 关 键 词： | 直升机旋翼 动稳定性 干摩擦 等效阻尼 |
| 修稿时间： | 2005年8月22日 |
Effect of dry friction damping to rotor dynamic stability |
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| HU Guocai,LIU Xiangyi,CHEN Junmin and SUN Hongyan.Effect of dry friction damping to rotor dynamic stability[J].Journal of Naval Aeronautical Engineering Institute,2006,21(1):101-104. |
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| Authors: | HU Guocai LIU Xiangyi CHEN Junmin and SUN Hongyan |
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| Institution: | Department of Airborne Vehicle Engineering,NAEI,Yantai,Shandong,264001,Department of Airborne Vehicle Engineering,NAEI,Yantai,Shandong,264001,Naval Equipment Department,Beijing,100076 and Naval Equipment Department,Beijing,100076 |
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| Abstract: | To analyze helicopter rotor dynamic stability with a high degree of accuracy, accurate and reliable damping coefficient determinations of rotor structure are needed. A dry friction damping model for hinges of a pitch rod is presented, and the effect of the hinge centrifugal to its friction damping is taken into account. Then the dynamic stability analysis is validated with test data of a scaled rotor. Result shows that, with applications of the dry friction damping model presented in the paper, the predictions of regressive lag modal damping correlates the test data very well. |
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| Keywords: | helicopter rotor dynamic stability dry friction equivalent damping |
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