Canted rudder system for pitch roll and steering control

Details Canted rudder system for pitch roll and steering control Canted rudder system for pitch roll and steering control

1995-06-20

1996-02-06

Avila, Stephen

Ships

Ballasting

Antirolling

114126, 114163, B63B 3900

Patent

active

054889197

ABSTRACT:
The invention is directed to a system for stabilizing a marine vehicle against rolling and pitching motions and for providing steering control to the marine vehicle. The system includes at least two rudders rotatably affixed to the marine vehicle aft of marine vehicle propellers and canted approximately 45.degree. to the vertical; at least two rudder actuators, one actuator associated with each of the rudders, for providing a predetermined dynamic rotational motion to each rudder; at least one power unit for providing power to the rudder actuators; and a control unit for determining the predetermined dynamic rotation of each of the rudders and for generating control signals corresponding thereto. The control signals are provided to the at least one power unit for regulating the power provided to the actuator units wherein the control unit independently controls the movement of each of the rudders such that the rudders cooperate to provide steering control to the marine vehicle and to stabilize the marine vehicle against rolling and pitching motions.

REFERENCES:
patent: 3931781 (1976-01-01), Larsh
patent: 4023516 (1977-05-01), Bennett
patent: 4380206 (1983-04-01), Baitis et al.
patent: 4388889 (1983-06-01), Baitis et al.
patent: 4398486 (1983-08-01), Woolaver et al.
patent: 5415122 (1995-05-01), Shen
Ferreiro, Larrie D., Timothy C. Smith, William L. Thomas, III and Roberto cedo, "Pitch Stabilization for Surface Combatants," Naval Engineers Journal, vol. 106, No. 4, Jul. 1994, pp. 174-191.

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