777 Autopilot Flight Director System

Author

Hornish, Ronald R.

Author_Institution

Collins Air Transport Div., Rockwell Int. Corp., Cedar Rapids, IA, USA

fYear

1994

fDate

30 Oct-3 Nov 1994

Firstpage

151

Lastpage

156

Abstract

This paper overviews the design architecture and operation of the 777 Autopilot Flight Director System (AFDS). The AFDS provides the functions necessary for automatic control and/or flight director guidance of the 777 airplane selected flight path. The system consists of a Mode Control Panel (MCP), which provides the primary interface between the flight crew and the AFDS; three Autopilot Flight Director Computers (AFDCs), which provide triplex computations for the flight director (F/D), autopilot (A/P), maintenance, and backdrive functions; and six backdrive control actuators (BCA), which provide visual and tactile feedback indications to the flight crew through dual redundant control of wheel, column, and pedal positions commanded by the autopilot function

Keywords

aircraft computers; aircraft control; computer architecture; feedback; position control; redundancy; 777 autopilot flight director system; Mode Control Panel; airplane selected flight path; automatic control; backdrive control actuators; backdrive functions; column position control; design architecture; dual redundant control; flight crew; flight director guidance; maintenance; pedal position control; primary interface; tactile feedback; triplex computation; visual feedback; wheel position control; Actuators; Aerospace control; Aerospace electronics; Aircraft; Airplanes; Automatic control; Control systems; Sensor systems; Voting; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Avionics Systems Conference, 1994. 13th DASC., AIAA/IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

0-7803-2425-0

Type

conf

DOI

10.1109/DASC.1994.369488

Filename

369488