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Old 19th Jan 2008, 18:15
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dubfan
 
Join Date: Nov 2007
Location: dublin
Age: 44
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Flaps n Gear Re BA 777 @ LTR

Hi Folks,
Not interested in starting any form of a thread on the accident itself - more a generic question based on technical consequences of lowering/retracting flaps and gear to stretch a glide.

Am hearing a lot in the media, and indeed reading some opinions on the matter here on pprune, about the effects of reducing (or even increasing)flap on short final to increase the glide distance. One genius expert on TV even suggested raising the gear.

I remember back to my PPL/CPL days and doing the practice forced landings and the glide approaches. We were told never, ever commit gear down till we were sure we would make the field and never ever ever drop full flap till we were positive we would. Finally, once configured, never ever ever ever deselect them.

Technical opinions please based on lift/drag. (Disregard ability of crew to even think along these lines)

DF
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