Hydraulic system for ship rudder roll stabilization and steering

Details Hydraulic system for ship rudder roll stabilization and steering Hydraulic system for ship rudder roll stabilization and steering

1989-05-01

1990-04-24

Peters, Jr., Joseph F.

Ships

Steering mechanism

Fluid pressure

114144R, 91509, B63H 2522

Patent

active

049190644

ABSTRACT:
In a hydraulic system for roll stabilization of a vessel by motions of the rudder an arrangement for supplying a hydraulic fluid to the rudder engine comprises a constant delivery pump, a pressure accumulator, and a valve gear unit. While the valve is opened the hydraulic fluid is delivered by the pump and the accumulator, and when the valve is closed the pump fills up the accumulator to maximum working pressure. The valve gear unit comprises a proportional control valve for controlling period, direction and flow rate of the hydraulic fluid to the steering engine and a load compensation device for controlling the returning flow returning via the proportional control valve for compensating for irregular loads from the waves or the sea against the rudder.

REFERENCES:
patent: 3488954 (1970-01-01), Thomas et al.
patent: 3886884 (1975-06-01), Stark et al.
patent: 4380206 (1983-04-01), Baitis et al.
"Einsatz und Betrieb von Hydrospeichern", 82 O+P Konstruktions-Handbuch, 79/80, vol. 23 (1979) n.degree. 10B, Mainz, pp. 33-36.

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