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5 votes

Where did the false "equal transit-time" explanation of lift originate from?

The popularity of the equal transit-time fallacy is a bit more complicated than a mistake spreading from a single source. It is simple, intuitively appealing (blowing over an airfoil is often invoked, ...
Conifold's user avatar
  • 77.6k
4 votes

When and how did people learn of air resistance?

It is hard to answer the question as asked because it presumes that people first developed the idea of air drag force that alters motion of objects on Earth, and then realized that laws of motion can ...
Conifold's user avatar
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4 votes
Accepted

How or where did the Wright brothers develop the expertise to formulate quadratic equations to design their first propeller?

How or where did the Wright brothers develop the expertise to formulate quadratic equations to design their first propeller? The Wright brothers developed no serious theory for designing propellers. ...
Simplex11's user avatar
  • 156
4 votes

Where did the false "equal transit-time" explanation of lift originate from?

Klaus Weltner and Martin Ingelman-Sundberg (from the Department of Physics at the University Frankfurt) in an ultimately unpublished paper, “Physics of Flight — reviewed”, submitted to the European ...
john-hen's user avatar
  • 155
3 votes

Where did the false "equal transit-time" explanation of lift originate from?

This explanation has probably been independently 'rediscovered' many times, and it is unlikely to be able to point to a particular origin. Ackroyd says in 'Babinsky's Demonstration: The Theory of ...
eugenhu's user avatar
  • 191
3 votes

Where did the false "equal transit-time" explanation of lift originate from?

The asymmetric shape (not its explanation with "equal transit time"!) comes from the first mathematical theory that explained the lifting force (Chaplygin's formula, known in the West as "Blasius ...
Alexandre Eremenko's user avatar
3 votes
Accepted

How much had the rise of drones been connected with the study of birds?

Drones fly on the same principles as the ordinary airplanes or helicopters. So the main difficulty in developing of drones was the problem how to control them, not how to make them fly. And this ...
Alexandre Eremenko's user avatar
3 votes

Where did the false "equal transit-time" explanation of lift originate from?

"Hat der Körper eine gleichmäßige Geschwindigkeit in ruhender Luft, so wird auch in der den Körper umgebenden Luft eine gleichmäßige Bewegung eintreten, die im wesentlichen darin besteht, daß die Luft ...
Ortac's user avatar
  • 31
1 vote

How were complex analysis methods, like the Joukowsky transform, used in early aircraft design?

"Theoretical and conceptual tool" is probably closer to what happened than "used directly", but how "integral" it was is probably in the eye of the beholder. Joukowsky's ...
Conifold's user avatar
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1 vote

Where did the false "equal transit-time" explanation of lift originate from?

Writing about two years after you posted this question, Graham Wild, a Senior Lecturer in Aviation at UNSW Canberra, posted a preprint to the physics education section of arXiv that attempts to answer ...
Tom Loredo's user avatar

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