Model | Natural frequency (Hz) | |
Bare | 8.467 | |
Empty | 8.476 | |
0.8 D gap ratio | 0.5 D length | 8.258 |
1 D length | 8.299 | |
2 D length | 8.341 | |
0.5 D gap ratio | 0.5 D length | 8.356 |
1 D length | 8.335 | |
2 D length | 8.361 |