Dynamical Stability - Area under GZ

Dynamical stability (energy reserve) at an angle is Δ × area under GZ curve - the energy available to resist a gust or heeling impulse.

Dynamical stabilityGZ areaEnergy

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Formula, assumptions, and limits

E_d = \Delta \cdot \int_0^\theta GZ \, d\theta

Symbol	Meaning	Unit
$\Delta$	Displacement	t
$\int GZ\,d\theta$	Area under GZ curve	m·rad

Source: IS Code 2008 Part A

Dynamical stability (energy reserve) at an angle is \u0394 \u00d7 area under GZ curve - the energy available to resist a gust or heeling impulse.