Dynamical stability (energy reserve) at an angle is Δ × area under GZ curve - the energy available to resist a gust or heeling impulse.
Formula
$$ E_d = \Delta \cdot \int_0^\theta GZ , d\theta $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $\Delta$ | Displacement | t | loading computer |
| $\int GZ,d\theta$ | Area under GZ curve | m·rad | stability booklet |
Sources
- IS Code 2008 Part A.