Angular displacement of torque wheel.
(<- (Wheel-Torque ?X) (Dot (Basis.Vec (Reference-Frame Actuator-Base) 1) (Applied-Torque Actuator-Base Torque-Wheel))) (=> (Wheel-Torque $X $Y) (Time-Quantity $Y)) (=> (Wheel-Torque $X $Y) (Mechanical-Component $X))