PPRuNe Forums - View Single Post - Braking action on a wett runway
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Old 9th August 2006 | 22:07
  #5 (permalink)  
Pilot Pete
 
Joined: Aug 2000
Posts: 1,695
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From: Egcc
Originally Posted by issi noho
What's wrong with 4. brakes and a braking aid. Unless you're flying an airship you'll have plenty of mass attached to the tarmac if you applied the correct landing technique.
Firstly, what's a braking aid? Secondly, without the spoilers raising and dumping the lift from the wings you will not get much weight on the wheels. You may have a an aircraft weighing hundreds of tonnes, but the lift being generated at touchdown speed will be holding this weight off the wheels....even if you applied the correct landing technique.

This means no matter how hard the brakes are applied you will not brake as effectively as with the spoilers raised. Why? Because if you have anti-skid it will keep backing off the brake pressure to prevent skidding, or, if you don't have anti-skid you will just, well, skid!

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