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Counter-Rotating Flywheel Pair: Cancelling Gyroscopic Reaction Torque

Interactive 3D simulation of gyroscopic reaction torque in vehicle-mounted flywheel energy storage: a spinning flywheel resists being yawed, kicking a reaction torque into the frame — pair two flywheels counter-rotating and the net angular momentum, and the torque, cancel while stored energy doubles.

Energy & Thermodynamics3DAdvanced60 FPS📱 Mobile-adapted⇄ 2D version

Flywheel energy storage systems don't just store kinetic energy — the spinning rotor carries angular momentum, and that turns any turn of the vehicle into a gyroscopic reaction torque on the mounting frame. This simulator renders a vehicle chassis carrying either a single flywheel or a counter-rotating pair, computes the real cross-product torque τ = Ω × L live as you yaw the chassis and spin the rotor(s) up, and shows why spacecraft and vehicle flywheel batteries are built as matched counter-rotating pairs: the net angular momentum cancels, the reaction torque drops to zero, and the stored energy doubles instead of cancelling.

⚙ Under the hood

Yaw a vehicle carrying a spinning flywheel and watch the real gyroscopic reaction torque τ = Ω × L kick into the frame, then switch to a counter-rotating flywheel pair and see the net angular momentum — and the torque — cancel while stored energy doubles.

flywheelgyroscopeangular-momentumenergy-storagetorquemechanics

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