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Thread: Flap retraction
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Old 18th Nov 2012, 00:20
  #45 (permalink)  
tommoutrie
 
Join Date: Jan 2002
Location: london, UK
Age: 57
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Nope, still my money I'm afraid chaps.. For the sake of not typing too much lets stick with an aeroplane where the flaps can retract at V2+10.
2nd segment climb gradient is ALWAYS better at V2+10 clean than it is a V2 flapped which are the two conditions you have the climb gradients for. Therefore, when you are all engines operating and accelerating through V2+10 you MUST retract the flaps to ensure that in the event of the engine failing you remain above the required gradient. If you do what most operators do and remain with the take off flap set but accelerate above V2+10 and then the engine fails you have a draggy aircraft trying to climb with one engine out. If you had already got rid of the flap the aircraft would already be climbing as efficiently as possible.

Its a two way bet... im a grand up now..
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