so that at any instant the velocities of precession of the two gyros are equal and in the opposite direction. This arrangement avoids any effect of the gyros on the steering of the ship. As shown in Art. 89, the stabilizing torques developed by the two gyros are in the same sense about the fore-and-aft axis of the ship.
The outstanding feature of the Fieux* stabilizer is the hydraulic brake mechanism employed to absorb the energy of the ship's roll. This device has the following important properties:
(a) It permits the maximum angle of precession.
(b) It produces zero brake effect when the precession is changing in direction.
(c) It produces maximum opposition to precession when the velocity of precession is maximum and diminishes the brake effect progressively as the precessional velocity decreases.
* Ravue Maritime. 1924. n. 351: 1925. T). 180.