Civil Engineering Reference
In-Depth Information
Table 4.10 Vibration-acceleration amplitude at the first 15 sorted natural frequencies of the
satellite structure for all dynamic loading phases
Loading phase
Frequency (Hz)
Vibration-acceleration Amplitude (g)
Vertical ''z''
Lateral ''y''
Mov. Dir. ''x''
Rail transportation
35
0.145
0.087
0.08
33
0.142
0.085
0.078
96
0.14
0.108
0.077
62.6
0.121
0.092
0.066
73.6
0.128
0.098
0.07
35
0.286
0.195
0.13
33
0.346
0.242
0.173
Road transportation
35
0.3
0.3
0.3
33
0.3
0.3
0.3
96
1.6
1.6
1.6
104.7
1.6
1.6
1.6
Air transportation
62.6
3.1
3.1
3.1
73.6
3.1
3.1
3.1
119.8
1.6
1.6
1.6
128.3
1.6
1.6
1.6
187.9
0.8
0.8
0.8
137
2.8
2.8
2.8
Vertical ''z''
Lateral ''y''
Lateral ''x''
35
0.771
0.771
0.771
33
0.753
0.753
0.753
96
1.406
1.406
1.406
104.7
3.759
3.759
3.759
62.6
0.974
0.974
0.974
73.6
1.033
1.033
1.033
Launch (phase I)
119.8
1.813
1.813
1.813
128.3
1.941
1.941
1.941
187.9
2.615
2.615
2.615
137
2.063
2.063
2.063
471.7
3.709
3.709
3.709
696.8
3.759
3.759
3.759
378.1
3.584
3.584
3.584
950.4
3.312
3.312
3.312
311.3
3.444
3.444
3.444
Launch (phase II)
35
0.771
0.771
0.771
33
0.753
0.753
0.753
96
1.133
1.133
1.133
104.7
1.909
1.909
1.909
62.6
0.974
0.974
0.974
73.6
1.033
1.033
1.033
119.8
1.216
1.216
1.216
128.3
1.242
1.242
1.242
187.9
1.429
1.429
1.429
137
1.267
1.267
1.267
471.7
1.458
1.458
1.458
696.8
1.909
1.909
1.909
378.1
1.233
1.233
1.233
950.4
1.692
1.692
1.692
311.3
1.751
1.751
1.751
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