Flettner Rotor Sail Cart // Homemade Science with Bruce Yeany

The Flettner rotor is a large spinning cylinder that was originally developed to harness wind energy for moving large transport ships. It was introduced during the 1920's and uses the Magnus Effect to capture the wind instead of a more traditional sail found on older boats. In this video a small cart has a large spinning rotor attached is used to demonstrate how the Magnus Effect and the Coandă effect are the result of Bernoulli's principle.

[colleenforrest]

I love how you "complete the thought" with your videos and go that extra step to show variations and answer the "why we're seeing what we're seeing" question

[unclegeorge]

Great science. Thanks for the clear and experimental atmosphere.

[InterdimensionalWiz]

ah, thank you, it's a pleasure to learn from someone who can teach.

[fendergrab]

Thank you for all that you do, I can't wait to for my son to be born and show him all the things that are amazing in this world that we gloss over in our daily lives!

[Moraren]

What a great demonstration of this effect! A passenger ship around here has a big rotor like this on the deck, it has always facinated me.

[TRUEECSTACY]

Thanks for the amazing things you show us on your channel.

[clebbson_marques]

Bruce Yeany, thank you very much. Through your videos, I see one of the ways to change science education in Brazil.

[devr]

Absolutely excellent demonstration! Thank you

[williamogilvie]

Very interesting demos and easy to follow explanations. A neighbor my age, when I was at university, showed me something he had dreamed up. He took the top and bottom off an Aluminum soda can and threw it at me, with the can horizontal. It travelled straight for a short distance. I threw it back at him and put a lot of spin on it. It travelled straight much further. I haven't seen his idea replace the frisbee, but it was interesting. BTW, someone gave me an original frisbee in 1959 as a Christmas present. It came with instructions about how to get it spinning with a stick and then you were suppose to keep it up on the top of the stick. I couldn't do that. I had more fun throwing it like a flying saucer.

[SoylentThulhu]

Fun science is so fun. Thank you for the great demonstration!

[Nephalen]

Please don't ever stop making videos. You are amazing!

[tfofurn]

Marvelous demonstrations! Thank you for showing us alternate shapes and a stationary rotor!

[josephlai]

Thank you for an exceedingly interesting, educational and fun demonstration of the science behind this phenomenon. You explained it very well.

[GuusYT]

Great work Bruce, love your video's! Keep up the good work!

[hugmyster]

An explanation on my level - thank you so very much! 😀

[hunterboat]

Bruce, outstanding as always. Thank you!

[skeeterburke]

i am so off on a tangent now, thank you for this video. i shared a link to it on facebook. then i was wondering about sniper bullets and the magnus effect, and sure enough, someone made a fascinating video about it - ok back to work!! why does youtube have to be so interesting all the time?!?

[ひさとら]

I wish mr.bruce were my science teacher. Great respect from Japan.

[chiragsharma]

Thanku very much sir for explaining the principle with some real life demonstrations. I am a new member to your community and I will be following you as long as possible. With lots of love from a student❤❤

[ezrarichardson]

I built an RC sailboat using one of these. It worked pretty well! I just used a PVC tube directly on the top of a brushless out runner electric motor Lol! I could get about 40minutes to an hour of run time of run time. So overall pretty successful!