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RC KFC bucket aeroplane (magnus effect)

PeterSripol · 8M views · 2017-04-03 · 18:03

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Overview

Peter Sripol builds and flies an RC aeroplane whose wings are rotating KFC buckets, using the Magnus effect (Flettner rotors) for lift. It is a hobbyist experiment in unconventional aerodynamics.

On Hacker News

HN cites it as a fun, concrete demonstration that Magnus-effect rotating cylinders can generate enough lift to fly.

Discussed on HN; no positive recommendation is recorded in this export · HN mentions 2018–2022

Topics

Aviation & aerospace engineeringEveryday physics & science demos
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magnus effectflettner rotorrc planeaerodynamicsdiy experiment

What people said

maxbond · 2022-09 · Reference

My understanding is that planes don't fly directly upside down, and they angle the wing slightly to make a kinda-sorta-airfoil. How helicopters can turn directly upside down, and fly that way[1], without reversing the direction of their props, that I don't get. (Thinking about it now, I think it turns from a helicopter to a hovercraft? Eg, this is a ground effect?) [1] [LINK] Also, tangentially, Magnus effect planes are a thing: [VIDEO]

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bernulli · 2020-12 · Reference

Potential flow theory tells us that the lift L is L = rho U Gamma, where rho is the air density, U the flight velocity, and Gamma the circulation, i.e. the tangential velocity of the rotating surface times the circumference. L is then only proportional to the radius, not to the square of the radius. But it sure does produce enough lift to let things fly! [VIDEO]

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jcims · 2018-04 · Reference

I've only seen Peter in his guest spots on Flite Test. One of the sweetest and coolest dudes on that channel. Always down to experiment and obviously thinks big. Edit: Case in point, magnus effect plane - [VIDEO]

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Sources

Video by PeterSripol, played through YouTube.

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