Automatic control system for hydrofoil craft

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

1973-03-16

1976-05-25

Pendegrass, Verlin R.

Ships

Building

Observation boats

244175, 244179, 244181, 244194, 318588, 318563, 318585, B63B 128

Patent

active

039585220

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 roll sensing devices are provided which normally generate identical signals to actuate the control surfaces to stabilize the rolling motion. In case a failure or malfunction, the signals provided by the two sensing devices become different and apparatus is provided to compare these signals and to respond to a difference in the signals to initiate landing of the craft rapidly and safely.

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

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