Table 2 Estimates of flutter speeds of the JSM_c and JSM_enp models
#Case | Eigenvalue Analysis | p-k Method Nastran based on DLM | CM with adaptive step size \(\boldsymbol{\Delta {\lambda }^{*}=2\; \mathrm{and}\; 0.5}\) | CM with fixed step size \(\boldsymbol{\Delta {\lambda }^{*}=0.5}\) |
|---|---|---|---|---|
Clean Wing (m/s) | 119 | 115 | 116.4 | 116.4 |
Wing with Engine (m/s) | 91 | 90 | 88.7 | 88.7 |
Number of Steps | - | - | 229 | 551 |
Computation Time (Intel Core i7-10700 @ 3.80 GHz) | 13.2 s | 34.3 s | 83.6 s |