Design and Dynamic Characteristic Analysis of a Support Mechanism for Large Parabolic Cylindrical Spaceborne Deployable Antennas

Table 1. Tab.1The first six-order vibration modes of the antenna support mechanism and their descriptions
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Table 1. Tab.1The first six-order vibration modes of the antenna support mechanism and their descriptions
阶次频率/Hz 振型描述
1 0.085 31 对角翘曲变形
2 0.442 92 弧面向平移弯曲
3 0.605 43 对称扭转变形
4 0.843 04 对称扭转变形
5 0.904 01 对称扭转变形
6 1.028 80 Z轴向弯曲变形

Table 2. Tab.2Simulation results with the support rod outer diameter as the variable

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Table 2. Tab.2Simulation results with the support rod outer diameter as the variable

支撑杆外径/mm	1阶频率/Hz	2阶频率/Hz	3阶频率/Hz	4阶频率/Hz	5阶频率/Hz	6阶频率/Hz
24	0.085 30	0.442 92	0.605 43	0.843 04	0.904 01	1.028 80
25	0.084 30	0.438 17	0.598 91	0.833 92	0.894 23	1.015 70
26	0.083 30	0.433 35	0.592 31	0.824 68	0.884 32	1.002 60
27	0.082 30	0.428 48	0.585 63	0.815 34	0.874 31	0.989 43

Table 3. Tab.3Simulation results with the support rod inner diameter as the variable

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Table 3. Tab.3Simulation results with the support rod inner diameter as the variable

支撑杆内径/mm	1阶频率/Hz	2阶频率/Hz	3阶频率/Hz	4阶频率/Hz	5阶频率/Hz	6阶频率/Hz
4	0.085 30	0.442 92	0.605 43	0.843 04	0.904 01	1.028 80
5	0.085 60	0.444 27	0.607 28	0.845 65	0.906 70	1.031 30
6	0.085 90	0.445 83	0.609 42	0.848 67	0.909 84	1.034 30
7	0.086 30	0.447 61	0.611 86	0.852 11	0.913 41	1.038 00

Table 4. Tab.4Simulation results with the remaining rod outer diameter as the variable

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Table 4. Tab.4Simulation results with the remaining rod outer diameter as the variable

其余杆件外径/mm	1阶频率/Hz	2阶频率/Hz	3阶频率/Hz	4阶频率/Hz	5阶频率/Hz	6阶频率/Hz
22	0.085 30	0.442 92	0.605 43	0.843 04	0.904 01	1.028 80
23	0.090 30	0.467 66	0.639 33	0.890 42	0.954 65	1.064 50
24	0.094 50	0.488 93	0.668 49	0.931 16	0.998 21	1.090 40
25	0.098 40	0.508 04	0.694 80	0.967 74	1.037 40	1.110 20

Table 5. Tab.5Simulation results with the remaining rod inner diameter as the variable

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Table 5. Tab.5Simulation results with the remaining rod inner diameter as the variable

其余杆件内径/mm	1阶频率/Hz	2阶频率/Hz	3阶频率/Hz	4阶频率/Hz	5阶频率/Hz	6阶频率/Hz
16	0.084 80	0.439 22	0.600 43	0.836 34	0.896 43	1.076 90
17	0.085 50	0.442 93	0.605 48	0.842 37	0.904 02	1.057 00
18	0.085 30	0.442 92	0.605 43	0.843 04	0.904 01	1.028 80
19	0.083 10	0.436 28	0.596 30	0.830 10	0.890 47	0.986 00

Table 6. Tab.6Material parameters
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Table 6. Tab.6Material parameters
材料弹性模量/GPa 密度/（kg·m^-3）泊松比
铝合金7055 70 2 800 0.33
高刚度钢 212 7 850 0.31
钛合金 110 4 510 0.34

Table 7. Tab.7Simulation results with the support rod material as the variable

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Table 7. Tab.7Simulation results with the support rod material as the variable

支撑杆材料	1阶频率/Hz	2阶频率/Hz	3阶频率/Hz	4阶频率/Hz	5阶频率/Hz	6阶频率/Hz
铝合金7055	0.082 40	0.425 67	0.581 93	0.810 71	0.868 72	1.102 70
高刚度钢	0.069 00	0.362 68	0.495 48	0.689 14	0.740 09	0.830 02
钛合金	0.078 60	0.410 04	0.560 36	0.779 88	0.836 85	0.946 44

Table 8. Tab.8Performance comparison of different antenna support mechanisms

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Table 8. Tab.8Performance comparison of different antenna support mechanisms

可展天线机构	口径/(m×m)	质量/kg	单位面积质量比/（kg·m^-2）	基频/Hz	焦比
SEASAT^[36-37]	10.7×2.2	29.0	1.230	0.900 0	—
星载桁架式可展天线机构^[25]	10×12	305.7	2.548	0.139 8	0.50
本方案	11×52	742.1	1.297	0.085 3	0.45

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Linhan FU, Xiaofeng CHEN, Jinbao CHEN, Chuanzhi CHEN, Guang ZHENG. Design and Dynamic Characteristic Analysis of a Support Mechanism for Large Parabolic Cylindrical Spaceborne Deployable Antennas[J]. AEROSPACE SHANGHAI, 2025, 42(3): 42

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Paper Information

Category: Structures and Mechanisms

Received: Oct. 26, 2024

Accepted: --

Published Online: Sep. 29, 2025

The Author Email:

DOI:10.19328/j.cnki.2096-8655.2025.03.006

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Tab.1The first six-order vibration modes of the antenna support mechanism and their descriptions

Table 1. Tab.1The first six-order vibration modes of the antenna support mechanism and their descriptions

Table 2. Tab.2Simulation results with the support rod outer diameter as the variable

Table 2. Tab.2Simulation results with the support rod outer diameter as the variable

Table 3. Tab.3Simulation results with the support rod inner diameter as the variable

Table 3. Tab.3Simulation results with the support rod inner diameter as the variable

Table 4. Tab.4Simulation results with the remaining rod outer diameter as the variable

Table 4. Tab.4Simulation results with the remaining rod outer diameter as the variable

Table 5. Tab.5Simulation results with the remaining rod inner diameter as the variable

Table 5. Tab.5Simulation results with the remaining rod inner diameter as the variable

Table 6. Tab.6Material parameters

Table 6. Tab.6Material parameters

Table 7. Tab.7Simulation results with the support rod material as the variable

Table 7. Tab.7Simulation results with the support rod material as the variable

Table 8. Tab.8Performance comparison of different antenna support mechanisms

Table 8. Tab.8Performance comparison of different antenna support mechanisms