C-141 and C-130 power-by-wire flight control systems

The C-141 RAMTIP (Reliability and Maintainability Technology Insertion Program) project comprises the development, test, and flight evaluation of fly-by-wire/power-by-wire flight controls for the three primary axes, plus spoilers, on the C-141 aircraft. The C-130 TAPM (Technology Application Program Management) project comprises the development, test, and flight evaluation of an electro-hydrostatic actuation (EHA) subsystem in the HTTB (high technology test bed) aileron system. The author describes the systems being investigated and summarizes the laboratory and flight test demonstrations that have been accomplished. He also addresses current and planned programs for further development, test installations, and flight demonstrations of power-by-wire primary flight control systems