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Old 1st July 2006 | 11:08
  #14 (permalink)  
FullWings
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Joined: Dec 2003
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From: Tring, UK
I don't think the level of autobrake on its own has much to do with how hot the brakes get - it's the mass and groundspeed on touchdown which determines how much heat is generated bringing the aircraft to a full stop. Obviously, the amount of reverse used and the time it is held for will reduce the energy requirements: with higher autobrake settings, there is less time to engage and spool up reverse, plus the retarding force acts over a shorter time period.

The braking systems on airliners are certified to bring the whole show to a dead stop from V1 at max. takeoff mass with no reverse, then have at least two minutes (I think) of taxi time before the tyre plugs go. At normal landing weights and speeds you are unlikely to have a problem (as in blowing up), even with full braking and no reverse credit. It is possible, however, to blow tyres with a heavy landing or anti-skid fault...
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