unity - rigidbody rotate

var eulerAngleVelocity : Vector3 = Vector3 (0, 100, 0);
 function FixedUpdate () {
  var deltaRotation : Quaternion = Quaternion.Euler(eulerAngleVelocity * Time.deltaTime);
  rigidbody.MoveRotation(rigidbody.rotation * deltaRotation);
 }