| Transverse vibration of the blade for unmanned micro helicopter using rayleigh-ritz method |
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| 作者姓名： | Jungang Lü |
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| 作者单位： | Jungang Lii，Jiadao Wang，and Darong Chen
State Key Laboratory of Tribology，Tsinghua University，Beijing 100084，China |
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| 基金项目： | 面向21世纪教育振兴行动计划(985计划) |
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| 摘 要： | A rotor manipulation mechanism for micro unmanned helicopter utilizing the inertia and the elasticity of the rotor is introduced. The lagging motion equation of the rotor blades is established, and then the natural frequencies and mode shapes of the blade for the helicopter are studied by using beam characteristic orthogonal polynomials by the Rayleigh-Ritz method. The variation of natural frequencies with the speed of rotation and the mode shapes at different rotational speeds are plotted. The using of orthogonal polynomials for the bending shapes enables the computation of higher natural frequencies of any order to be accomplished without facing any difficulties.
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Transverse vibration of the blade for unmanned micro helicopter using rayleigh-ritz method |
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| Jungang Lü,Jiadao Wang,Darong Chen.Transverse vibration of the blade for unmanned micro helicopter using rayleigh-ritz method[J].Journal of University of Science and Technology Beijing,2003,10(6). |
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| Authors: | Jungang Lü Jiadao Wang Darong Chen |
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| Abstract: | A rotor manipulation mechanism for micro unmanned helicopter utilizing the inertia and the elasticity of the rotor is introduced. The lagging motion equation of the rotor blades is established, and then the natural frequencies and mode shapes of the blade for the helicopter are studied by using beam characteristic orthogonal polynomials by the Rayleigh-Ritz method. The variation of natural frequencies with the speed of rotation and the mode shapes at different rotational speeds are plotted. The using of orthogonal polynomials for the bending shapes enables the computation of higher natural frequencies of any order to be accomplished without facing any difficulties. |
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| Keywords: | rotor manipulation mechanism rotor blades Rayleigh-Ritz method |
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