The Pneumatic Stabilizer

The idea of using low air pressure to operate the stabilizer is very intriguing. The response of the air is significantly faster than the hydraulic fluid due to the viscosity effect which makes the pneumatic stabilizer far more effective than the hydraulic. The pneumatic system is much simpler and more compact due to the non existence of heavy high pressure lines and equipment or electric and electronic circuits. The compressibility of the air cushions the reaction of the stabilizing torque exerted on the yacht by the fins. Thus, producing a very pleasant a very pleasant and smooth ride. The safety factor of using low air pressure ( 100 psi ) versus high pressure ( 1200 psi ) and flammable hydraulic fluid is undeniable.

Principles of the GG System

A rate gyroscope ( gyro ) is continuously activating and positioning two ( or more ) aerofoil shaped fins. which project from the sides of the vessel. so that one fin develops upward lift while the other develops downward lift. Thus, the combination produces the required stabilizing torque, which counteracts the rolling force induced by the wave action. The fins are operated by means of double acting cylinders.

The fins are operated by means of double acting cylinders. The piston in each cylinder is mechanically coupled to a drive shoe which turns the fin. No resetting mechanism is used. the required fin angle being obtained by balancing the hydrodynamic force generated by the fin against the pressure in the cylinder. This arrangement has the advantage that the fin adjust its angle of incidence according to the speed of the vessel.

The G-G system ls pneumatically operated and controlled, thus providing comfortable. Smooth, quiet and reliable air cushioned stabilization. The system comprises the latest advanced pneumatic equipment and devices, most of which are standard industrial items. These components when interconnected, provide the simplest yet most advanced and efficient stabilizing system.

It stops the roll almost before it starts.