Research and Development of Aircraft Control Actuation Systems. The Development of a Direct Drive Fly-By-Wire Flight Control System and Evaluation of a Force Sharing Fly-By-Wire Actuator.

摘要

This report describes the design and test evaluation of a direct drive fly-by-wire redundant control system. Also included in the report is the evaluation testing of a fly-by-wire tandem actuator mechanization developed by Parker-Hannifin Aerospace Hydraulics Division, Irvine California. The direct drive system is based on using moving coil force motors to position a hydraulic control valve without hydraulic amplification. The system is designed as a single fail operate system which will accept one input or component failure and continue to operate with acceptable performance. The test results verified that the failure modes and performance met the design goals. The system incorporates component dispersion techniques to allow single hit survivability. The direct drive mechanization offers adequate performance with minimum complexity as a fly-by-wire control system. The Parker-Hannifin actuator mechanization is a two fail operate configuration using an integrated secondary actuator with both force and position summing. The test results document the operational characteristics of the design. (Author)