Assertion: bufflehead's size | /r/Desires | long taxi
Facets:
value: to get airborne
type: PURPOSE
Source sentences:
text: The slots at the end of the wings, between the primaries, reduce the induced drag and wingtip vortices by "capturing" the energy in air flowing from the lower to upper wing surface at the tips, whilst the shorter size of the wings aids in takeoff (high aspect ratio wings require a long taxi to get airborne).