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Do you know exactly how fly-by-wire Airbus planes are? In an emergency, if the avionics computer goes crazy and starts making the plane do barrel rolls, can the
by brianpgordon 7y ago
Do you know exactly how fly-by-wire Airbus planes are? In an emergency, if the avionics computer goes crazy and starts making the plane do barrel rolls, can the pilot override it and take manual control?
- treis 7y ago>Do you know exactly how fly-by-wire Airbus planes are? In normal operation it takes the input from the pilot and decides how to accomplish what it thinks the pilot wants. For example, if the pilot pulls all the way back the plane will translate that into the maximum safe climb rate. You can think of it as the pilot expressing a desired state and the plane figuring out how to get there. >In an emergency, if the avionics computer goes crazy and starts making the plane do barrel rolls, can the pilot override it and take manual control? AFAIK there's no way to disable the flight control. The computer is supposed to be reliable enough to not do crazy stuff and it accounts for sensor errors. Based on what sensors are malfunctioning different safety features are disabled. For example, if it can't get a reliable angle of attack reading the stall prevention is disabled.
- joeseeder 7y agoAirbus systems have alternate law mode which kicks in when computers, sensors fail, read about Air France crash
- smadurange 7y agoI think this is true. Also, in the Air Asia crash when pilot disengaged autopilot by mistake using a reset switch changing flight mode to manual. As far as I know, if the autopilot can't make reliable decisions, it rings alarm bells and disengages fly-by-wire. Looks to me like quite elegant design.