Videos: Forces on an Airplane

Another, slightly more technical, look at Cayley’s Four Forces of Flight!

Cayley’s Four Forces

Ueli Gegenschatz: Extreme Wingsuit Flying

Ueli Gegenschatz takes everything we know about aerodynamics and puts it all into a series of brilliant extreme sports experiences in the pursuit of his dream of human flight. You can view this video and think about lift, drag, thrust, and weight, but chances are you’ll be too busy wishing you were there with him!

Says Gegenschatz: “I believe this is probably the closest possibility to come to the dream of being able to fly.”

Bernoulli Effect in Action

Wait! There’s more!

Bernoulli Effect

Daniel Bernoulli’s (1700-1782) work is integral to the field of aerodynamics. It explains the way that air moves over a curved surface. As the air moves up and over the curved surface of an airplane wing, it must flow more quickly than the air moving in a straight path across the underside of the wing. The faster flow atop the wing results in less pressure over the top of the wing. This reduction in pressure on the top of the wing is offset by increased pressure upward from beneath the wing. The net result is what is known as lift. It is this lift that enables an airplane to fly, whales to stay afloat, and birds to take to the air.

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Daniel Bernoulli

UnknownDaniel Bernoulli (1700-1782) was a member of a well-respected family of Swiss scientists and mathematicians. His book, “Hydrodynamica,” published in 1793, coined the term “hydrodynamics.” Bernoulli’s fluid flow equations contributed to the success of the modern practice of testing scale models early in the design process. Continue reading

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