🌀 Rotor Run-Up Lab: Critical Speed, Unbalance Response & Balancing

Spin a steel shaft with a disc up through its critical speed: watch the orbit, Bode and polar plots, the 180° phase flip and self-centring, then balance the rotor with a trial weight and check it against ISO G-grade. Real Jeffcott-rotor maths, seeded Monte-Carlo and a built-in Run check.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install