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For Training Purposes Only Sept 04 2-i P I LOT T R A I N I N G GU I D E AUTOMATIC FLIGHT CONTROL SYSTEM Chapter 2: Automatic Flight Control System TABLE OF CONTENTS Page Introduction .........................................................................................................................2-1 Description ..........................................................................................................................2-1 Guidance Panel.............................................................................................................2-1 AFCS Schematic...........................................................................................................2-3 Autopilot ........................................................................................................................2-4 Autopilot Engagement...................................................................................................2-6 Autopilot Disengagement..............................................................................................2-7 Yaw Damper .................................................................................................................2-8 PFD Annunciation .........................................................................................................2-9 Flight Director (FD)...................................................................................................... 2-10 Guidance Panel........................................................................................................... 2-12 Flight Director Modes .................................................................................................. 2-14 Lateral Modes ............................................................................................................. 2-15 Bearing (BRG) Source ................................................................................................ 2-27 VOR/LOC Nav Source ................................................................................................ 2-28 FMS Nav Source......................................................................................................... 2-29 Vertical Modes ............................................................................................................ 2-30 Multi-Axis Modes......................................................................................................... 2-35 Takeoff (TO) Mode...................................................................................................... 2-38 Go Around (GA) Mode ................................................................................................ 2-38 Windshear Guidance (WSHR) Mode .......................................................................... 2-39 Automatic Emergency Descent Mode................................................................... 2-41 Autopilot – Flight Director EICAS Messages............................................................... 2-42 EMS Circuit Protection ................................................................................................ 2-44 P I LOT T R A I N I N G GU I D E AUTOMATIC FLIGHT CONTROL SYSTEM 2-ii For Training Purposes Only Sept 04 PAGE INTENTIONALLY LEFT BLANK For Training Purposes Only Sept 04 2-1 P I LOT T R A I N I N G GU I D E AUTOMATIC FLIGHT CONTROL SYSTEM INTRODUCTION The Primus 2000XP includes an Automatic Flight Control System (AFCS) that provides dual channel autopilots, dual yaw dampers, dual flight directors and automatic pitch trim. The autopilot and yaw damper functions operate in an active standby mode, with only one channel active at a time. All computations are performed by two Flight Guidance Computers (FGC), located in the Integrated Avionics Computer (IAC). The FGC receives inputs from the Electronic Flight Instrument System (EFIS), the Air Data Computers (ADC), the Inertial Reference System (IRS), the Flight Management System (FMS), the Fault Warning Computer (FWC) and the Data Acquisition Unit (DAU). DESCRIPTION All computations are performed by the FGCs which are located in IAC1 and IAC2. The FGCs receive inputs from the following through the Avionics Standard Communications Bus: • Flight Management System • Electronic Flight Instrument System • Inertial Reference System • Fault Warning Computer • Data Acquisition Units • Micro Air Data Computers GUIDANCE PANEL The AFCS functions controlled by the FGC include: • Flight director modes • Pitch wheel references • Engagement of the autopilot and yaw damper functions • Selection of left or right Primary Flight Display (PFD) data to be used by FGC www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：AUTOMATIC FLIGHT CONTROL SYSTEM
