🌬️ Post Mill: Sail Power, Wind Direction Error and Millstone Load (2D)

Side view of a wooden post mill whose whole body is turned into the wind. Set the sail radius, wind speed, wind direction swing, the miller turning lag, the millstone torque, rotor inertia and brake, and watch the rotor speed settle. Power coefficient against tip-speed ratio, yaw loss and spin-up are computed, with four in-page numerical checks. A dynamics companion to the 3D post mill.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install