Units & conventions

Every numeric field in BriskFyr is SI: metres (m), kilograms (kg), seconds (s), radians (rad), newtons (N) — and combinations of those (N/m for stiffness, N·s/m for damping, kg·m² for inertia, and so on). You never choose a unit system; there's exactly one, so a value typed into any field means the same thing everywhere in the model.

A couple of conventions worth knowing before you start:

• Angles are radians, not degrees, everywhere a field expects an angle (hinge orientation, drive-law phase, angle Requests). It's easy to type a degree value into a radians field by habit — if a rotation looks 57× larger or smaller than you expected, that's usually why.
• Units are a display convention, not a per-model setting. They describe what a number means; they don't change how the model solves.

See SI values in context in Tutorial 1 — Your First Simulation