Accession Number : AD0772588

Title :   Control-by-Wire Actuator Model Development for AFCAS.

Descriptive Note : Final technical rept. 2 Jan 73-10 Jan 74,


Personal Author(s) : Demarchi,J. ; Gianforcaro,N. ; Haning,R. ; Hupp,R. ; Malikowski,F.

Report Date : JAN 1974

Pagination or Media Count : 83

Abstract : The report describes the design and fabrication of an engineering model, 8000 psi, control-by-wire, modular configured, aircraft type hydraulic servo actuator for the Navy sponsored AFCAS development program. The modular elements could be used to build up either a dual tandem, dual parallel, or simple servo actuator. The tandem and parallel configurations were controlled by two synchronized, single stage, spool/sleeve type flow control valves designed to operate at 8000 psi using MIL-H-83282 fluid. Each valve spool was coupled directly to and driven by a force motor with rare earth cobalt samarium permanent magnets and four armature coils for redundancy. A dual parallel linear variable differential transfer position feedback transducer was mounted inside the acutator piston rod. Steady-state performance tests were conducted on one spool/sleeve assembly and force motor. (Author)

Descriptors :   *Naval aircraft, *Fly by wire control, *Hydraulic actuators, Flight control systems, Hydraulic servomechanisms, Hydraulic equipment, Hydraulic valves, Dynamic response, Feasibility studies

Subject Categories : Flight Control and Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE