Figure 5

The modal deformation analysis results for (a–f) Model I, (g–l) Model II and (m–r) Model III. (a, g, m) Mode 1 is the up-down flapping mode; (b, h, n) Mode 2 is a bending and twisting mode; (c, i, o) Mode 3 is the front-back flapping mode; (d, j, p) Mode 4 is a twisting and bending mode; (e, k, q) Mode 5 is the twisting mode; (f, l, r) Mode 6 is a twisting and bending mode.