Non-dimensional time constants of the natural modes
| Mode 1 . | . | . | Mode 2 . | . | Mode 3 . | . | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Stability . | T . | tdouble . | Stability . | thalf . | Stability . | thalf . | ||||
| Unstable | 48.7 | 15.4 | Stable | 3.5 | Stable | 57.8 | ||||
| Mode 1 . | . | . | Mode 2 . | . | Mode 3 . | . | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Stability . | T . | tdouble . | Stability . | thalf . | Stability . | thalf . | ||||
| Unstable | 48.7 | 15.4 | Stable | 3.5 | Stable | 57.8 | ||||
T, non-dimensional period of the oscillatory mode; tdouble, non-dimensional time for a divergence motion to double in amplitude; thalf, non-dimensional time for a damped motion to halve in amplitude.