Research Article
Geometrically Nonlinear Aeroelastic Stability Analysis and Wind Tunnel Test Validation of a Very Flexible Wing
Table 1
Structure mode frequency.
| | Mode number | Mode name | Natural frequency (Hz) | Test frequency
(Hz) | Linearized frequency (Hz) | The error between test and nonlinear analysis (%) |
| | 1 | Vertical 1st bend | 1.78 | 2.00 | 1.95 | | | 2 | Horizontal 1st bend | 10.60 | 10.56 | 10.63 | | | 3 | 1st twist | 13.75 | 13.93 | 13.74 | | | 4 | Vertical 2nd bend | 17.36 | 18.10 | 17.60 | | | 5 | Vertical 3rd bend | 54.00 | 55.83 | 54.26 | |
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