Automatic control system for hydrofoil craft

Details Automatic control system for hydrofoil craft Automatic control system for hydrofoil craft

1974-01-23

1979-12-18

Bentley, Stephen C.

Ships

Hull or hull adjunct employing fluid dynamic forces to...

Having hydrofoil

114282, B63B 118

Patent

active

041788710

ABSTRACT:
A control system for hydrofoil craft is one in which control surfaces are moved automatically in response to signals derived from the motion of the craft to stabilize and control the craft. In such systems, a potentially dangerous condition can occur in case of a failure or malfunction in the roll control system. In order to prevent such conditions, two redundant roll sensing devices are provided which normally generate identical signals to actuate the control surfaces to stabilize the rolling motion. In case of a failure or malfunction, the signals provided by the two sensing devices become different. When this occurs, all normal control signals to the control surfaces are terminated; and secondary feedback loops act to position all control surfaces to smoothly land the craft.

REFERENCES:
patent: 2673314 (1954-03-01), MacCallum
patent: 2859005 (1958-11-01), Owen et al.
patent: 3100861 (1963-08-01), Osder
patent: 3137260 (1964-06-01), Harris, Jr. et al.
patent: 3156209 (1964-11-01), Ask
patent: 3403874 (1968-10-01), Boskovich et al.
patent: 3422327 (1969-01-01), McBrayer et al.
patent: 3504649 (1970-04-01), Scherer
patent: 3800727 (1974-04-01), Stark et al.

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