Flight control modes: Difference between revisions

Revision as of 15:35, 20 December 2020

Revision as of 05:10, 9 January 2021

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==Boeing 777 primary flight control system==

[[File:Boeing 777-200ER cockpit.jpg|thumb|right|The cockpit of the 777 is similar to 747-400, a fly-by-wire control simulating mechanical control]]

The fly-by-wire electronic flight control system of the Boeing 777 differs from the Airbus EFCS. The design principle is to provide a system that responds similarly to a mechanically controlled system.<ref name="Boeing B-777: Fly-By-Wire Flight Controls">{{cite web |url=http://www.davi.ws/avionics/TheAvionicsHandbook_Cap_11.pdf |title=11 Boeing B-777: Fly-By-Wire Flight Controls | author=Gregg F. Bartley – Boeing | date=May 4, 2008 | access-date=October 8, 2016}}</ref> Because the system is controlled electronically, the flight control system can provide [[flight envelope]] protection.

The electronic system is subdivided between 2two levels, the 4four actuator control electronics (ACE) and the 3three primary flight computers (PFC). The ACEs control actuators (from those on pilot controls to control surface controls and the PFC). The role of the PFC is to calculate the control laws and provide feedback forces, pilot information and warnings.<ref name="Boeing B-777: Fly-By-Wire Flight Controls"/>

===Standard protections and augmentations===