Inventor
CLELFORD DOUGLAS H
14 patents
Patents
14 patentsUS4337516AJun 29, 1982
Sensor fault detection by activity monitoring
UNITED TECHNOLOGIES CORP174 citations98
US4294162AOct 13, 1981
Force feel actuator fault detection with directional threshold
UNITED TECHNOLOGIES CORP60 citations96
US4270168AMay 26, 1981
Selective disablement in fail-operational, fail-safe multi-computer control system
UNITED TECHNOLOGIES CORP72 citations96
US4412280AOct 25, 1983
Complementary commands in fail-operational, fail-safe multi-computer control system
UNITED TECHNOLOGIES CORP39 citations92
US4382283AMay 3, 1983
Helicopter attitude and airspeed acquisition and retention system
UNITED TECHNOLOGIES CORP32 citations92
US4355358AOct 19, 1982
Adaptive aircraft actuator fault detection
UNITED TECHNOLOGIES CORP49 citations92
US4354230AOct 12, 1982
Synchronized, fail-operational, fail-safe multi-computer control system
UNITED TECHNOLOGIES CORP31 citations92
US4313165AJan 26, 1982
Force feel actuator with limited proportional/integral error feedback
UNITED TECHNOLOGIES CORP29 citations92
US4500967AFeb 19, 1985
Aircraft short-term roll attitude retention system
UNITED TECHNOLOGIES CORP38 citations91
US4741501AMay 3, 1988
Preventing augmenting vertical load induced oscillations in a helicopter
UNITED TECHNOLOGIES CORP20 citations81
US4564908AJan 14, 1986
Automatic limiting of helicopter engine torque
UNITED TECHNOLOGIES CORP25 citations81
US4382281AMay 3, 1983
Helicopter force feel actuator automatic static null compensation
UNITED TECHNOLOGIES CORP20 citations78
US4566101AJan 21, 1986
Oscillatory failure monitor
UNITED TECHNOLOGIES CORP17 citations73
US4563743AJan 7, 1986
Maneuver-force gradient system
UNITED TECHNOLOGIES CORP13 citations73