Date: 26 Jun 98 02:37:58 From: Scott Macmillan <Scott@golfmike.demon.co.uk> Organization: Up2U Followups: 1 2 3
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Hello folks, I was watching one of those 'in the cockpit' videos the other day that featured the Airbus A320. During the video I could see the trim wheel moving back and forward of its own accord. The captain explained that the aircraft has an auto trim system, the trim being operated by the aircrafts computers. Anyway, what I would like to know is how do the computers know how the pilot wants the plane to fly? eg. Lets say your in a light aircraft in level flight, then you decide to climb. You add power then pull back on the yoke, then trim the aircraft to maintain the climb attitude. Now lets say you decide to remain in level flight, but fly at a higher air speed. You would add power, then push the yoke forward to maintain level flight, then trim. If you were to do the same in the airbus, how do the computers know if the pilot wants to climb, or if he wants to fly at a higher airspeed? I'm guessing that the trim system is linked to the autopilot, and the computers will know what to do by what the pilot selects on the autopilot panel, but then, what about flying manually? Thanks for taking the time. -- Scott Macmillan GM7OMU, IO75tv Glasgow, Scotland, UK.