| 叶间减摆器失效时旋翼/机体耦合稳定性的变化 |
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| 引用本文： | 凌爱民.叶间减摆器失效时旋翼/机体耦合稳定性的变化[J].直升机技术,2002(2):5-9. |
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| 作者姓名： | 凌爱民 |
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| 作者单位： | 中国直升机设计研究所,景德镇,333001 |
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| 摘 要： | 本文以5片桨叶的叶间减摆器旋翼直升机为例,计算了一个减摆器失效时旋翼与机体耦合稳定性,比较了失效与不失效时旋翼摆振频率、阻尼和振型的变化,分析了由此引起的“地面共振”和“空中共振”的变化特点及其变化机理,提出了避免或消除失效可能导致“地面共振”的设计方法。
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| 关 键 词： | 叶间减摆器 失效 地面共振和空中共振 |
CHANGES OF COUPLED ROTOR-BODY STABILITY FOR A LEAD-LAG DAMPER BETWEEN BLADES FAILURE |
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| Authors: | LING Ai-min |
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| Abstract: | In this paper the stability of coupled rotor-body for a lead-lag damper failure is calculated by taking a helicopter with a rotor of 5 blades and dampers mounted between blades as an example. Comparison of the changes in lead-lag frequency, damping and modes of rotor has been made for the damper working and failure. The change characterisitcs and mechanism of ground and air resonance brought from the damper failure are analyzed. A design method is suggested to avoid or eliminate probable ground resonance . |
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| Keywords: | damper between blades failure gruond and air resonance |
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