By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Forum House Ad Zone

Wind powered machine faster than the wind

Blackbird - counterintuitive: even into wind

All Topics | Latest Posts

Search for:  in Thread Title in  
pgk pgk10/01/2022 09:51:38
2661 forum posts
294 photos

How cool is this?

https://www.youtube.com/watch?v=F7PNSyAfCjk
And the math?

https://www.youtube.com/watch?v=7u2RgiRJ2Uc

John Haine10/01/2022 10:22:55
5563 forum posts
322 photos

Ice yachts and sailing hydrofoils can move faster than the wind when on a "broad reach". Windsurfers in a good breeze can go nearly as fast as the wind.

pgk pgk10/01/2022 10:34:30
2661 forum posts
294 photos

But this machine can go downwind faster than the wind as opposed to only doing so with a side-wind component. can any of ice yachts and hydrofoils go directly into wind?

The method used does suggest that a boat might do so with a rotating sail connected to a subsurface propellor.

Jon Lawes10/01/2022 10:42:08
avatar
1078 forum posts

Fantastic. Good find.

john halfpenny10/01/2022 10:57:16
314 forum posts
28 photos

This old chestnut has been done to death elsewhere, many many times. I humbly suggest forumists don't go down the rabbit hole.

Journeyman10/01/2022 11:09:08
avatar
1257 forum posts
264 photos

Idea of rotating sails has been around for a bit. This is vessel equipped with a Flettner Rotor circa 1922.

flettnerrotor.jpg

Link to article describing said rotor and theory off *** LINK ***

John

Martin Kyte10/01/2022 11:17:14
avatar
3445 forum posts
62 photos
Posted by pgk pgk on 10/01/2022 10:34:30:

But this machine can go downwind? faster than the wind as opposed to only doing so with a side-wind component. can any of ice yachts and hydrofoils go directly into wind?

The method used does suggest that a boat might do so with a rotating sail connected to a subsurface propellor.

Do you really mean downwind. The land yacht travels into the wind and the clip is captioned upwind.

regards Martin

John Haine10/01/2022 11:21:58
5563 forum posts
322 photos

If it was moving downwind at the wind speed, how would it know the wind was blowing?

pgk pgk10/01/2022 12:03:46
2661 forum posts
294 photos
Posted by Martin Kyte on 10/01/2022 11:17:14:
Posted by pgk pgk on 10/01/2022 10:34:30:

But this machine can go downwind? faster than the wind as opposed to only doing so with a side-wind component. can any of ice yachts and hydrofoils go directly into wind?

The method used does suggest that a boat might do so with a rotating sail connected to a subsurface propellor.

Do you really mean downwind. The land yacht travels into the wind and the clip is captioned upwind.

regards Martin

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Sign up to our Newsletter

Sign up to our newsletter and get a free digital issue.

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Latest Forum Posts
Support Our Partners
cowells
Sarik
MERIDIENNE EXHIBITIONS LTD
Shopping Partners
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest

 

Donate

donate