The Impossibility of Flying Heavy Aircraft Without Training

Heck no. It just does so with no *net* downward momentum of air. In
other words, the upward momentum ahead of the wing is equal to the
downward momentum at the rear of the wing.

What upward momentum? The air starts out still, and infinitely wide
wing comes flying through it, when all is done air has to have been
deflected downwards, at the very least to satisfy Newton.

Behind the wing, air is moving downwards, there is higher pressure below
the wing's path, and lower pressure above the wing's path. The air will
recover, as the pressure equalizes (eventually pushing down on the
earth's surface and up into the lower pressure region)

Infinite wings have no downwash, yet provide lift. By *definition*,
downwash is caused by wingtip vortices.

Well, then an infinite wing ought to have something that is not called
downwash, but keeps Newton happy. Call it downflow, call it pressure
bounce.. but it's something.

Jose
--
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