Absolutely amazing no more rolling up with cone effect , wet, messy, mildew, is clean, replicates the wing it really is. Someone has finally gone beyond what we’ve been stuck with for centuries. Improved on “ the wheel”...
@@ericjohnson9468 We often see large boats with in-mast or in-boom furling. Talked to one of them this summer. He told that he never has a summer where the in-boom furling does not fail. It would scare me to death if a saw big black clouds and stong winds ahead.
I did this exact thing for my Naval Architecture Thesis in 2009. Made a sail for a Laser. Sailed very differently with regards to a traditional sail, particularly downwind. Very cool how the mast on yours retracts also. Huge amount of labour to build the sail compared to a traditional sail.
What's your opinion on them as the future? Obviously it's early days at the moment but do you think they'll replace normal sails? I can see a pretty huge advantage in the greater efficiency and lower centre of effort but it also looks like they come with a fair bit of additional complexity. Also is there any particular reason nobody fits a jib/genoa with them?
Starting Questions: (1) Weight penalty vs conventional high-tenacity dacron sail (2) Material? (3) WHEN there is an air leak, how is this addressed on the water. (4) Do the seams between these tubes provide better laminar airflow? (5) Cost vs conventional high-tenacity dacron sail (6) Flaking and stowing on the boom... looks challenging
I see several things here - would make sense to me to use this with a multihull rather than mono. I have to imagine that it would be heavier than a regular sail, so the wide platform of a multihull would be helpful for stability. Because of that huge inflated sail, if it were to capsize, that would prevent it from going "turtle," instead staying on it's side, which would also be helpful for a multihull that is difficult to right from turtle.
interesting concept but one that I have a lot of questions about. 1) I see no rigging of any sort, so does that mean that there is a limit to amount of wind that set up can take? Can it take winds up to 20 knots and above? 2) What is the maintenance like if you get a tear in the sail? Does it come apart in sections or do you have to take the entire sail off to fix lets say a simple wear and tear hole? How easy is it to take the sail off? 3) Since there is no rigging for the mast that I can see, does the boat need extra support to be able to take the loads in the mast hole itself? Does the boat need to be re-enforced to be able to take the pressure this setup would put on the boat. 4) What are the overall benefits to this setup? Is it lighter, stronger, more efficient, does it capture more air somehow than a standard sail, what? 5) How much air do you need to fill up the sail? What extra gear does one need to make this set up work? 6) What is the sail material made of? What kind of life expectancy can we see with this material and overall setup? 7) I'm worried about the mast, it looks like it's made of individual collapsible4 components that make it able to rise and lower but my concern is the structural integrity of the mast itself, which goes hand in hand with my first question about limits of wind pressure it can take without rigging. 8) Is it cheaper than a standard rig? (probably not considering the radical design) 9) If one does get a leak and lose all air in the sail, can you still use the material as a conventional sail in the event of absolute air loss as a back up plan? (i'm talking about for those boats that have no radio or engines) 10) How practical is this at the end of the day, as a sailor and one who knows about sailors, we tend to be very practical people (with the exception of actually owning sailboats). Overall does this make any sense, and does it beat conventional setups in strength, utility, weight, maintenance, durability, ect? or is it just a fun idea with a bunch of limits? 11) Are there limit's to the size the sails can be? 12) How much weight can this sail handle, I have a Hudson Force 50 ketch that weighs a shit ton, would this sail design work well with my cruiser type boat? I kind of like this idea and it looks kind of cool, but if that's all it is then I have trouble with seeing the point of this design.
The reinforcement requirement is at least finite - the moment the mast can create is balanced by the ballast and crew and that's finite. I twigged that when I was making rigging fittings for my small (unballasted) dinghy - they only need be as strong as my weight and ability to hike out (plus a bit in reserve).
Lots of drawbacks! Like for instance , you would totally miss all those lines and ropes everywhere. Totally not worth missing out on the challenge of getting de-masted going under a bridge. : /
Now, combine the IWS with SBS (Sailing Booster System). I saw something similar to this in Woodenboat magazine about a West System wood hulled trimaran that saw speeds of 20+ knots. The sail could rotate 360 around the mast. (He used his sail to maneuver the harbor.) It's interesting to see the wing approach vs the umbrella (catching air) approach.
Clever and elegant, but a big part of the fun of sailing is adjusting the tension on the sail to make it the ideal shape for the wind direction and strength. One obvious advantage is that if you capsize, the boat will never turn turtle.
@@snorttroll4379 Sorry, typo corrected. I wrote "sale" and meant "sail". If you sail with a conventional cloth sail, you can pull on various lines to adjust the shape of the sail to get the best performance. You can't do that with an inflated wing sail. However, the good news is, if you capsize (tip over) with an inflated sail, the boat will lie on its side instead of going all the way over. When a boat is completely inverted, that is called "turning turtle" because the bottom of the boat resembles a turtle's shell.
ah. how could one design a flip over boat like the life boats. but for a sailboat? what is the design principle? wahat about a morphing wing and what about flaps like on a plane? for more lift. and what about a mast and keel that swings in the boat so younever tilt with the wind? can exaggerate the movement of the keel ballast with some geers so one stays upright@@mikefule330
All things have to pass through the three stages of truth 1. It is Ridiculed 2. Violently opposed 3. Finally scene as self evident, I like your idea very much!!
@@terrysullivan1992 Thank you for the correction. I am an inventor that creates devices for people living with disorders. Would I be blunt to ask where you live and could you help? In your best capacity?
Gr8 idea. I would want my perfect yatch . A Big jet Cat with telescopic wing sail and kite sail.coverd in solar panels. Sides, roof etc hydrogen generator.
@kev googlestein it's basically a paraglider sealed. There are wings sealed called the woopie or something like that. You can buy a hang glider looks exactly like this boat sail only you can fly it.
The Birds have you beat on this concept, but I love it that you are attempting to show us all, that someone had understanding for lift a long time ago, millions of years ago.
Beautiful, and a great potential for better efficiency - compared with classical sails. This is the very first possibility to use true aerodynamic wing profiles for sailing. Congratulations !
François Cauneau ...not so... Wings work on high pressure system on the more concave side of the wing... Whereas the high pressure on any side of this inflatable sail is always convex, increasing the possibility of drag towards the leech of the sail...
This sail is not really effiecient though, i am sure a boat with regular sail of the same size would have gone a lot faster than the boat in the video.
I've seen lots of adverts promoting how awesome the wing-sails are, yet I didn't see a proper review yet. In addition to costs, I can guess they have flaws... I'm not sure for example how performant that wing is going downwind...
If your boat has low enough drag, you can go fast enough you're always sailing upwind. With that in mind sailing downwind is less of an issue. Check out en.wikipedia.org/wiki/Apparent_wind#Apparent_wind_in_sailing and ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-VAmUcRdqhjU.html
@John Smith YOU ARE A PIECE OF TRIVIAL SHIT. ALL SAILING SHIPS HAVE PUMPS ALL OCEAN GOING SAILBOATS ARE SHIPS TAKE YOUR BULLSHIT AND STUFF IT BACK UP YOUR TRIVIAL ASSHOLE WHERE IT CAME FROM.
Two small 100w fans maintain the shape of the sail with tiny pressure. The sail positions itself almost by itself, there is no tension to hold it in place. It works very well in heavy weather. It is not a competition sail. The boat is more stable than with a normal sail. It could well be a breakthrough invention. Check it out on their website inflatedwingsails.com/en.
Without a jib, there is no Bernoulli channel. The sail matterial and the fact that it is thick prevent from fine tunning. So this boat will be slow and unefficient. But it looks fun for those who are not sailors...
It's visible you have never sailed a symmetrical wing sail and you have no idea how it works. I had a 18m2 catamaran with a wing in 1987... 26 knots...Twice the speed of the wind. Unhappily too heavy and delicate to handle as the wing was rigid, a big piece. This soft version is pretty interesting.
Team33 so absolutely nothing. In the video it probably is a bit more - perhaps like 3 m/s. Which is still nothing. Based on what this video shows, that thing is only good for sunday sailors who don't want to do anything to make the boat move in a beautiful weather. I doupt if it can handle anything more than maybe 5-7 m/s, and that is probably optimistic.
I agree. I'd hate to be caught out in anything over 5 knots with that. And it is very ugly as well - Nothing to do with efficiency but ..... There are many videos of "breakthough" sails like this and they all lack a comparison vs "standard" sails.
Thomas Randle Technically the airfoil would be capable of the same amount of twist, because as a membrane, like a sale, even an inflatable sail works the same, with the same attachment points and hardware as any regular piece of fabric, that piece of fabric just has an air chamber in it. the major departure, The one that you fail to recognize (perhaps because you have focused on sailing instead of fixed wing flight) is the evolution of the simple two dimensional airfoil that the Wright brothers used (As do almost every modern sailboats), and the potential laminar airflow foil that is used on everything that flies today. That is like saying we shouldn’t depart from the Wright brothers wing design because modern wings with ailerons cannot flex (which Wright’s did, as they used wing warping instead of ailerons), but I am sorry to break it to you, but if you look at the World Cup of today, they are using what you see in this video except using carbon fiber and rigid frames instead of inflation to achieve the exact same thing.
Freakin` KIWI`S small country ( population ) brilliant inventions/innovation! Well done bud. A " Can do " people. No i`m not a Kiwi. Aussie. Credit to where it belongs, A` cuz!
It's apparently been bought up by Michelin who hopes to use it as auxiliary power on commercial ships. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-No6qTbn0J4s.html
I don't know how well or poorly it will perform, but why the heck are people so negative about everything different? And why do sailors resist innovation so much? I used a heavy carabiner rather than a knot to attach my spring line to my boat, and used some microceramic polish rather than wax, you'd think I assassinated the Queen.
I like the design principle being simplicity, but i cant help but feel there might be drawbacks when compared to an original style sail? if so could anybody let me know? thanks!
Pretty cool idea. Will stick to regular sails for a few years before this goes mainstream tho... something about this looks not "sailing" enough for me yet. (I Said yet, I understand how things evolve ok? )
Блин, пока мы в совке ракеты делали, и последний х_р без соли доедали, вот такие самодостаточные представители загнивающего капитала вполне могли себе это позволить. Зачёт!
Only uneducated sailors leave their halyards slap the mast The other ones carefully wrap them to avoid this noise; it is nicer for those who try to get some sleep in the marina, and it avoids damaging the skin of your aluminum mast
I bet a puncture would be a real let down. Probably better in partnership with other propulsion - commercial freighters? Should be easy store, inflate, deflate and store remotely.
