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Testing If You Can Blow Your Own Sail [17:06] (www.youtube.com)
submitted 11 months ago* (last edited 11 months ago) by FenrirIII@lemmy.world to c/videos@lemmy.world
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[-] JohnDClay@sh.itjust.works 16 points 11 months ago

Hmm according to myth busters, it does work if you have a giant fan and sail, just much less effectively than just the fan. Since the sail is acting as an inefficient air redirecter, kinda like an airplane thrust reverser.

https://youtu.be/uKXMTzMQWjo

Also, using the leaf blower on a skateboard should work even better, since the air is coming in though the side instead of straight back.

[-] acosmichippo@lemmy.world 4 points 11 months ago* (last edited 11 months ago)

i think the mythbusters result goes against the spirit of the myth. yes you “can” blow your own sail, but it’s never going to be as effective as shown in cartoons and such, or just turning the fan around like a normal air boat.

[-] Tippon@lemmy.dbzer0.com 3 points 11 months ago

I wonder how much more effective it would be if you had a duct behind the fan pulling in air from the sides, or maybe angled more towards the front?

Apologies if they covered this in the video, but I can't watch it at the moment.

[-] notnotmike@programming.dev 3 points 11 months ago

That's what I was thinking.

The fan in the thumbnail (and the one he tries in the video) fails because the fan's intake is pulling the fan away from the sail (like an airplane propeller). However, I wonder if you redirected that intake to the front of the boat while directing the output to the sail, could you get more thrust? The fan's intake and output would then be working together.

Also the leaf blower could work in theory but I think there's too much friction for the leaf blower to overcome. If it did have enough to push you, then you'd also be pushed sideways by the blower's output as well

[-] ChihuahuaOfDoom@lemmy.world 13 points 11 months ago

Is that what the kids are calling it these days?

[-] bionicjoey@lemmy.ca 5 points 11 months ago

I've heard it feels a lot more like you are blowing a sail than having your sail blown.

[-] foiledAgain@lemmy.world 3 points 11 months ago

I had a rib removed for THIS??!!

[-] RememberTheApollo_@lemmy.world 8 points 11 months ago

And this is why I fucking hate YouTube. 17 minutes of BS when they can’t be bothered to finish the opening scene, of course the answer is “nope”.

[-] FenrirIII@lemmy.world 2 points 11 months ago

Did you ever watch Mythbusters?

this post was submitted on 04 Mar 2024
11 points (64.1% liked)

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