| 基于时间推进自由尾迹方法的俯仰状态旋翼尾迹和入流特性计算 |
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| 引用本文： | 李春华,陈平剑.基于时间推进自由尾迹方法的俯仰状态旋翼尾迹和入流特性计算[J].航空计算技术,2008,38(4):18-22. |
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| 作者姓名： | 李春华 陈平剑 |
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| 作者单位： | 中国直升机设计研究所,江西,景德镇,333001 |
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| 摘 要： | 推导了旋翼俯仰运动时的桨叶挥舞运动方程,给出了桨叶升力面模型和尾迹时间推进预测一校正算法,并结合涡核模型和旋翼配平分析模型,建立了一个时间推进旋翼自由尾迹计算方法.通过计算的旋翼入流值与实验值的对比,验证了计算方法的有效性,利用该方法,计算了旋翼在俯仰运动时尾迹几何形状的畸变特点,并分析了俯仰运动时旋翼的入流特性.
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| 关 键 词： | 自由尾迹 旋翼 俯仰 入流 时间推进 |
Computation on Rotor Wake and Inflow Characteristics for Pitching Flight Based on Time-marching Free Vortex Method |
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| LI Chun-hua,CHEN Ping-jian.Computation on Rotor Wake and Inflow Characteristics for Pitching Flight Based on Time-marching Free Vortex Method[J].Aeronautical Computer Technique,2008,38(4):18-22. |
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| Authors: | LI Chun-hua CHEN Ping-jian |
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| Institution: | LI Chun-hua,CHEN Ping-jian(China Helicopter Research , Development Institute,Jingdezhen 333001) |
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| Abstract: | A new time-marching free vortex method was developed for predicting rotor wake geometries and inflow distributions.To consider rotor pitching motion,the blade flapping equation was re-derived.Also,the blade lift-surfacing model,the wake time-marching algorithm,the vortex core model and the trimming model were including in the free vortex method.By the comparisons of calculated results with experimental results for numerical example on rotor inflow,the present time-marching free vortex method was validated.U... |
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| Keywords: | free wake rotor pitching inflow time-marching |
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