HELICOPTER HYDRAULIC SYSTEM ICAS（直升飞机液压系统英格尔）.PDF

ICAS 2002 CONGRESS HELICOPTER HYDRAULIC SYSTEM (Design, Component Selection, Modular Construction, Integration Testing) (S. VISWANATH and R. NAGARAJAN of Hydraulics Group, Rotary Wing Research Design Centre, Hindustan Aeronautics Limited, Bangalore, India) 1. INTRODUCTION 2. SYSTEM TRADEOFFS Hydraulic fluid power is widely used in air- System tradeoffs need to be made to clearly borne applications specifically to operate the define the number of systems required for the flight controls and landing-gear systems due to helicopter including certain primary parameters its compact size, high response rates, high load to be finalized considering overall requirements holding capabilities and excellent power to of the helicopter reliability survivability. To weight ratio. Modern helicopters are no achieve this use of multiple hydraulic systems exceptions in this regard due to the adaptation has emerged. With the decision to use two of advanced rotor systems calling for higher hydraulic systems, there are two available control loads, fast response requirements and options to the designer. First option is to design use of retractable landing gear systems. This each system capable of handling the entire paper provides the salient features of the spectrum of control loads and use one system as hydraulic systems used in helicopters based on the main