PPRuNe Forums - View Single Post - Why the A380 wiggles rudder so much on landing
Old 20th Mar 2007, 00:12
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Rainboe
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OK- take it back- there are a lot of people who pretend here, and they like getting involved way out of their depth.
The BIG fan engines are fairly slow responding. In the flare, they are not giving much thrust. Even on a 747, you don't have to worry about lining the thrust levers up- it's not at all critical, and you never feel yaw due to thrust asymmetry, particularly during the flare and landing. This aeroplane is fairly stubby, hence the outrageously large fin. I would guess it needs slightly more apparent rudder due to the moment arm of the rudder in relation to the mass and size of the aeroplane. But minor differences in thrust level will be completely undetectable, just as they are on the 747.
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