MODEL-BASED DESIGN OF ACTIVE/ACTIVE ELECTROHYDROSTATIC ACTUATION FOR HELICOPTER FLIGHT CONTROLS

With the aviation industry's push to reduce greenhouse gas emissions, More-Electric-Aircraft (MEA) concepts have gained significant interest, particularly in actuation systems transitioning from hydraulic to electric power supply. This communication explores the application of Power-by-Wire actuators, specifically dual redundant Electro-Hydrostatic Actuator (DREHA), in the Primary Flight Control System (PFCS) of helicopters, as an enabling technology towards More-Electric Helicopter (MEH) and All-Electric Helicopter (AEH). The research focuses on a dissimilar dual-redundancy EHA system, providing a preliminary virtual validation of its potential for use in helicopter PFCS. It emphasizes its ability to detect and isolate failed channels effectively. The research findings indicate that the proposed DREHA can meet the requirements for helicopter usage scenarios and possesses significant potential for application.