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Comment by lowkey

Can confirm. I worked at Pratt & Whitney testing jet engines early in my career. At the time I read a similar article and spread it amongst my colleagues - the cognitive dissonance was palpable.

As engineers we had been taught that lift was due to air above the wing traveling faster than air below the wing and thus creating lift by way of a pressure differential. The more accurate answer as seen in the article is that the effect is better explained through Newton’s laws as a re-vectoring of horizontal thrust in a downward direction. Literally the engine pushes horizontally accelerated air downward and the action-reaction mechanic causes an equal but opposite upward force lifting the plane.

Amazing how so many experts could be so wrong in their understanding while the planes continue to fly.

It reminds me of how hummingbirds don’t know that they violate the known laws of physics when they fly.

parent lowkey 5 years ago

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