| 过渡状态的倾转旋翼气动特性计算分析(英文) |
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| 引用本文： | 李春华,张洁,徐国华.过渡状态的倾转旋翼气动特性计算分析(英文)[J].空气动力学学报,2009,27(2). |
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| 作者姓名： | 李春华 张洁 徐国华 |
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| 作者单位： | 1. 中国直升机设计研究所,江西,景德镇,333001
2. 南京航空航天大学直升机旋翼动力学国家级重点实验室,江苏,南京,210016 |
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| 基金项目： | 教育部新世纪优秀人才支持计划，航空科技创新基金 |
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| 摘 要： | 针对特殊的旋翼倾转运动,建立了一个过渡状态的旋翼非定常气动力数值计算方法.为正确模拟旋翼倾转运动使桨叶受到的附加惯性力及哥氏力作用,重新推导了旋翼倾转时的桨叶气动力模型和挥舞运动方程;为了适合于旋翼倾转时的入流和气动力计算,入流模型中考虑了倾转运动引起的旋翼尾迹弯曲影响.应用建立的方法,首先进行了旋翼配平计算,以验证计算模型,并给出了倾转旋翼的操纵量.然后,着重计算了旋翼在倾转过渡时的拉力.俯仰和滚转力矩随倾转角的变化,分析了倾转飞行时的前飞速度.倾转时间等对旋翼气动力的影响,得出了一些新的结论.
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| 关 键 词： | 倾转旋翼 过渡飞行 非定常气动力 倾转运动 |
Computational analysis on tiltrotor aerodynamic characteristics for transitional flight |
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| LI Chun-hua,ZHANG Jie,XU Guo-hua.Computational analysis on tiltrotor aerodynamic characteristics for transitional flight[J].Acta Aerodynamica Sinica,2009,27(2). |
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| Authors: | LI Chun-hua ZHANG Jie XU Guo-hua |
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| Institution: | 1.China Helicopter Research and Development Institute;Jingdezhen 333001;China;2.National Key Laboratory of Rotorcraft Aeromechanics;Nanjing University ofAeronautics and Astronautics;Nanjing 210016;China |
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| Abstract: | A new method was developed for predicting the unsteady aerodynamic forces of a tiltrotor in tilting process.To consider rotor tilting motion and additional inertial and Coriolis forces,the blade flapping motion equation for tilting transitional flight was re-derived.The dynamic wake distortion effects were alsoincludedin the rotor inflow model for fitting the tiltrotor inflow and aerodynamic analysis in transitional flight.Using the developed method,the calculation on rotor trim was firstly carried out to g... |
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| Keywords: | tiltrotor transitional flight unsteady aerodynamic force tilting motion |
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