Table 3 Natural frequencies of the long stringer in different modes
Mode | Natural frequency (Hz) | Mode | Natural frequency (Hz) |
|---|---|---|---|
1 | 9.0427 | 12 | 123.90 |
2 | 13.500 | 13 | 150.95 |
3 | 23.477 | 14 | 151.06 |
4 | 28.905 | 15 | 154.78 |
5 | 34.254 | 16 | 156.76 |
6 | 39.065 | 17 | 171.93 |
7 | 57.782 | 18 | 175.68 |
8 | 61.190 | 19 | 178.29 |
9 | 64.263 | 20 | 189.55 |
10 | 103.59 | 21 | 199.43 |
11 | 113.03 | 22 | 204.29 |