Coanda Effect Drone Propulsion

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[@lunarlith]

"Honey? The neighbor is making UFO's in the backyard again!"

[@encellon]

I spent a long time testing propulsion in a partial vacuum chamber to see what might work best at Mars. As it turns out, ordinary propellers beat every other option hands down. My advice when converting electricity into thrust... Use a standard rotor profile, size the tip-to-tip length just below a length that would send the tips supersonic, and you will get the most thrust possible.

[@InformantNet]

I am aware that this video is 3 years old, but I don't understand why you didn't just use 4 lightweight salad bowls. They're smooth, symmetrical, and cheap.

[@MrOliver1312]

Considering the obtuse and complicated nature of this - you should be pretty proud to get it working first try

[@Wrecked3]

He really printed it in two pieces instead of just flipping it over and printing it upside down like a bowl. .

[@Siamect]

Call me a traditionalist, but I prefer my drones and the tomatoes in separate formation. Great video as always. Well done!

[@blacksquirrel4008]

UA-cam is insidious. The other day I innocently clicked on Patagonia’s “how nose-riding works” and heard about the Coanda Effect. Now my feed is full of it.

[@DavidHender-cj7vm]

By the way, I have got Marcus Ivanhoff interested in your hovercraft rudder design? Is that not what your ultimate goal is? Both you and James have both been strangely silent over the last two months. Best wishes. David

[@MichaelSteeves]

I love the fact that nowhere in this entire experiment is the question "why?" even considered!

[@BucurStelian]

Nice project ! Henri would be very proud his inventions are well used nowadays but probably a little insulted as people pronounce his name like he was named after a koala

[@isthataprogenji4741]

>The domes are almost impossible to print on a FDM printer

[@laughing747]

Coanda effect and ground effect, most ambitious crossover i've ever seen

[@jjones6336]

This is an awesome example of experimental engineering. Sure, it didn't result in a faster, more efficient, or better drone, but it WAS an interesting exploration of using the coanda effect. Experimentation and sharing what you learn benefits us all. Cheers, thanks, and keep thinking outside of the box and trying new things! Thumbs-up!

[@rollmeister]

The air screw is the most efficient way for thrust.

[@Tmidiman]

This is how DiVinci got started. Theory, trail, error, improvement. Keep at it!

[@Engr.Faisal]

beautifully explained in the beginning clarifying my concept of lift and also coanda effect.

[@uquarosh]

A bold attempt to prove a complicated and involved theory. This is real science and we will be watching to see how it evolves.

[@CaliMeatWagon]

Tom : Propellers are stupid for this

[@fresheFresse]

Always good for fun video involving flying machines

[@MS-60663]

This was an excellent demonstration of "controlled folly". Thank you.