Except that flaps generally increase lift as well as drag. As I understand
it a belly board only increases drag.
TK
On 16 September 2014 05:19, Mike Stirewalt via KRnet
wrote:
> I think the bellyboard could technically be considered a "split flap".
>
I'm guessing the bellyboard is like the control line models I made out of
cardboard. Pull a flat sheet through the air at high speed, and a positive
angle of attack, and it will produce lift (fly). (In this case vortex lift.)
Equal and opposite reaction to the air mass accelerated downward is
a
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