zap flap

noun \ ˈzap- \

Definition of zap flap

:a split flap in which the hinge axis moves aft as the flap is deflected, thus increasing the area of the wing as well as its camber

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Origin and Etymology of zap flap

Zap, shortened from Edward F. Zaparka †1959 (or earlier), American aeronautical engineer who patented it


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