Aeroelastic Optimization Design for High-Aspect-Ratio Wings with Large Deformation

Table 9

Comparison of modal results before and after nonlinear optimization.

Before optimization		After optimization
Modal	Frequency (Hz)	Modal	Frequency (Hz)
1st vertical bending	3.14	1st vertical bending	2.40
1st chordwise bending	4.30	1st chordwise bending	3.33
2nd vertical bending	12.93	2nd vertical bending	10.73
2nd chordwise bending	19.87	2nd chordwise bending	16.52
3rd vertical bending	31.53	3rd vertical bending	27.09
1st torsion	39.65	1st torsion	35.83