Acta Aeronautica et Astronautica Sinica ›› 2024, Vol. 45 ›› Issue (9): 528945-528945.doi: 10.7527/S1000-6893.2023.28945
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Received:
2023-04-28
Revised:
2023-06-11
Accepted:
2023-06-25
Online:
2024-05-15
Published:
2023-06-27
Contact:
Xiao WANG
E-mail:x.wang@nuaa.edu.cn
Supported by:
CLC Number:
Bo LI, Xiao WANG. Dynamic modeling and modal analysis of coaxial rotors/auxiliary propeller/drive train coupled system[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(9): 528945-528945.
Table 7
Frequencies of helicopter coupled system
飞行状态 | 计算方法 | ω1/Hz | ω2/Hz | ω3/Hz | ω4/Hz | ω5/Hz | ω6/Hz |
---|---|---|---|---|---|---|---|
悬停 | 本文方法 | 5.356 | 11.491 | 13.705 | 30.693 | 34.316 | 63.109 |
FEM | 5.325 | 11.285 | 13.418 | 30.669 | 33.630 | 64.409 | |
低速飞行 | 本文方法 | 5.323 | 11.491 | 11.766 | 22.682 | 30.701 | 34.338 |
FEM | 5.388 | 11.594 | 12.096 | 22.619 | 30.958 | 33.843 | |
高速飞行 | 本文方法 | 5.121 | 8.929 | 10.924 | 22.310 | 29.511 | 33.189 |
FEM | 5.053 | 8.761 | 11.083 | 21.927 | 29.509 | 33.635 |
Table 8
Each component mode shape of coaxial helicopter
飞行状态 | 部件 | 1阶 | 2阶 | 3阶 | 4阶 | 5阶 | 6阶 |
---|---|---|---|---|---|---|---|
悬停 | 发动机 | -0.449 7 | -1.000 0 | -1.000 0 | -0.066 9 | -0.182 4 | -0.876 9 |
尾桨 | 0.000 0 | 0.000 0 | 0.000 0 | 0.000 0 | 0.000 0 | 0.000 0 | |
上旋翼 | 1.442 7 | 0.876 9 | 0.838 6 | 1.032 6 | 0.095 5 | 1.000 0 | |
下旋翼 | -0.410 1 | 0.876 9 | 0.741 6 | -0.017 1 | 1.065 6 | 1.000 0 | |
低速飞行 | 发动机 | -0.427 1 | -0.711 7 | -0.687 8 | -0.492 3 | -0.076 3 | -0.195 9 |
尾桨 | -0.033 9 | -0.347 1 | -0.364 4 | 1.354 0 | 0.062 2 | 0.103 7 | |
上旋翼 | 1.420 5 | 0.652 9 | 0.629 1 | 0.264 5 | 1.037 1 | 0.102 1 | |
下旋翼 | -0.378 1 | 0.652 9 | 0.616 4 | 0.175 7 | -0.019 6 | 1.070 3 | |
高速飞行 | 发动机 | -0.326 7 | -0.826 2 | -0.687 5 | -0.425 7 | -0.031 1 | -0.072 3 |
尾桨 | -0.023 9 | -0.209 8 | -0.314 1 | 1.310 0 | 0.029 0 | 0.044 2 | |
上旋翼 | 1.322 0 | 0.891 1 | 0.685 9 | 0.217 6 | 1.016 4 | 0.042 8 | |
下旋翼 | -0.253 7 | 1.196 8 | 0.685 9 | 0.136 4 | -0.008 4 | 1.029 0 |
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