Justin A. Posted August 9, 2009 Report Share Posted August 9, 2009 <object width="480" height="385"><param name="movie" value="http://www.youtube.com/watch?v=jCuP-XHefTo&hl=en&fs=1&color1=0x006699&color2=0x54abd6"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/watch?v=jCuP-XHefTo&hl=en&fs=1&color1=0x006699&color2=0x54abd6" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="480" height="385"></embed></object> 47 Knots! Quote Link to comment Share on other sites More sharing options...
Gecko Posted August 9, 2009 Report Share Posted August 9, 2009 holy crap.......I mean seriously holy crap Quote Link to comment Share on other sites More sharing options...
Kimo Posted August 9, 2009 Report Share Posted August 9, 2009 I'd hate to be on board when that thing decides to take a pearl dive. Otherwise, cool. Did anybody else notice how much their main sheet was reefed down. I wonder if they need the full sail to break plane and then have to reef it 'cause the full sail would overpower the vessel when on plane. Quote Link to comment Share on other sites More sharing options...
Justin A. Posted August 9, 2009 Author Report Share Posted August 9, 2009 I'd hate to be on board when that thing decides to take a pearl dive. Otherwise, cool.Did anybody else notice how much their main sheet was reefed down. I wonder if they need the full sail to break plane and then have to reef it 'cause the full sail would overpower the vessel when on plane. If you read the comments on youtube, it seems that it did torpedo shortly after the video was made. That must have made a hell of a mess... Quote Link to comment Share on other sites More sharing options...
Terryw Posted August 9, 2009 Report Share Posted August 9, 2009 That is the coolest thing I have seen in a long time. Awesome. Quote Link to comment Share on other sites More sharing options...
Kimo Posted August 9, 2009 Report Share Posted August 9, 2009 I don't know what they're talking about... a little damage. That thing got wrecked when it flipped. I don't understand Francaise well enough to catch if happened at speed (I assume so), but, damn, that must've been a hell of a ride. You could tell from the aerial shots just before the wipeout (not shown) that it was a squirelly boat to control. This seems to me to be the best video... http://www.hydroptere.com/~hydropte/_en/galerie_videos_hydroptere.php?id=614#centre Quote Link to comment Share on other sites More sharing options...
carvedog Posted August 11, 2009 Report Share Posted August 11, 2009 very cool. Low elevation flight. Quote Link to comment Share on other sites More sharing options...
KingCrimson Posted August 11, 2009 Report Share Posted August 11, 2009 I'm surprised how flat that boat sailed, anyone know if they use "ailerons" of sorts to flatten out the boat? Quote Link to comment Share on other sites More sharing options...
Kimo Posted August 11, 2009 Report Share Posted August 11, 2009 In some vids, it looked like they had a canting mast, but I'm not sure. I am fairly sure that the main hydrofoils are engineered with tapered chord and possibly some foil twist to naturally control the rise and fall of the plane thru the water (e.g. when the plane goes up, less lift is generated by the foil and so it goes back down). Also, the orientation of the foils (inward at 45 deg or whatever) tends to create stability because, when the boat heels to one side, that lowside's foil becomes more horizontal thru the water and produces more upward lift while the highside's foil becomes more vertical reducing upwards lift essentially self leveling the boat. It looks like there is no analagous structure to an aileron. I don't know if the entire foil itself is adjustable/repositionable so as to be able to change the angle of incidence of the foils. Quote Link to comment Share on other sites More sharing options...
photodad2001 Posted August 12, 2009 Report Share Posted August 12, 2009 <object width="425" height="344"><param name="movie" value="http://www.youtube.com/watch?v=TRFRQXPtXTs&hl=en&fs=1&"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/watch?v=TRFRQXPtXTs&hl=en&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object> Quote Link to comment Share on other sites More sharing options...
www.oldsnowboards.com Posted August 12, 2009 Report Share Posted August 12, 2009 <object width="445" height="364"><param name="movie" value="http://www.youtube.com/watch?v=YSYmSnpQ360&hl=en&fs=1&rel=0&border=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/watch?v=YSYmSnpQ360&hl=en&fs=1&rel=0&border=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="445" height="364"></embed></object> Quote Link to comment Share on other sites More sharing options...
Kimo Posted August 12, 2009 Report Share Posted August 12, 2009 Wow! I'd seen pictures of those Russian ground effect planes before, but never video. I don't know why they were beaching them. I thought they were basically flying boats, not amphibians. Quote Link to comment Share on other sites More sharing options...
KingCrimson Posted August 12, 2009 Report Share Posted August 12, 2009 In some vids, it looked like they had a canting mast, but I'm not sure. I am fairly sure that the main hydrofoils are engineered with tapered chord and possibly some foil twist to naturally control the rise and fall of the plane thru the water (e.g. when the plane goes up, less lift is generated by the foil and so it goes back down). Also, the orientation of the foils (inward at 45 deg or whatever) tends to create stability because, when the boat heels to one side, that lowside's foil becomes more horizontal thru the water and produces more upward lift while the highside's foil becomes more vertical reducing upwards lift essentially self leveling the boat. It looks like there is no analagous structure to an aileron. I don't know if the entire foil itself is adjustable/repositionable so as to be able to change the angle of incidence of the foils. Angled foils would make more sense, less crap to break. Thanks! Quote Link to comment Share on other sites More sharing options...
Bullwings Posted August 12, 2009 Report Share Posted August 12, 2009 Wow! I'd seen pictures of those Russian ground effect planes before, but never video. I don't know why they were beaching them. I thought they were basically flying boats, not amphibians. The were probably beaching them as a practice run at invading U.S. soil. You know, land on the water, beach all over California, Oregon, and Washington and have a few hundred troops flooding out of each plane/boat thingy... Oh and the originally video was pretty cool too. that thing was about as bare bones as it gets - it kind of reminded me of Waterworld (i know nothing about sailing and have only basic knowledge of how a hydrofoil works). Quote Link to comment Share on other sites More sharing options...
Kimo Posted August 12, 2009 Report Share Posted August 12, 2009 The were probably beaching them as a practice run at invading U.S. soil. You know, land on the water, beach all over California, Oregon, and Washington and have a few hundred troops flooding out of each plane/boat thingy...Oh and the originally video was pretty cool too. that thing was about as bare bones as it gets - it kind of reminded me of Waterworld (i know nothing about sailing and have only basic knowledge of how a hydrofoil works). You're probably right about the invasion practice, unless it involved the pilots' vodka rations being a little too high. Typical racing sailboats are all pretty spartan. The crews are lucky if they get hammocks to sleep in on transoceanic race boats. Quote Link to comment Share on other sites More sharing options...
bjvircks Posted August 12, 2009 Report Share Posted August 12, 2009 I don't sail but I'm a bit familiar with flight systems. This boat seems to be somewhat but not totally 'fly-by-wire'. A boat like this might be really twitchy and need to constantly compensate for changing sail forces and the constantly varying lift and drag coming from the canted foils as the hulls heel and lower and loads shift. If you look closely you can see hydraulics at each outrigger's canted foil and at the transom's inverted 'T' foil. I suspect the primary function for the hydraulics is to actively adjust foil angle and the secondary function is to flatten the foils to reduce draft for shallow water operations. I've got to reiterate someone's prior comment... holy crap! what a boat! On one short dash the knots converted to over 60 mph! That is some serious speed for sailpower! Quote Link to comment Share on other sites More sharing options...
Kimo Posted August 12, 2009 Report Share Posted August 12, 2009 Definitely twitchy. That's why they're making the next one a catamaran instead of a trimaran. Two lifting foils and two control foils compared to 2 and 1, respectively, as now. Quote Link to comment Share on other sites More sharing options...
dingbat Posted August 13, 2009 Report Share Posted August 13, 2009 <object width="425" height="344"><param name="movie" value="http://www.youtube.com/watch?v=dKJMP8EmZjw&hl=en&fs=1&"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/watch?v=dKJMP8EmZjw&hl=en&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object> Quote Link to comment Share on other sites More sharing options...
nils Posted August 18, 2009 Report Share Posted August 18, 2009 <object width="560" height="340"><param name="movie" value="http://www.youtube.com/watch?v=EPIJXf3QTzo&hl=fr&fs=1&"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/watch?v=EPIJXf3QTzo&hl=fr&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="560" height="340"></embed></object> even more impressive: 3 days 15 hours for the record ! 40 knots, 33 knots average speed ! N. Quote Link to comment Share on other sites More sharing options...
Gecko Posted August 18, 2009 Report Share Posted August 18, 2009 I didn't mind so much when Mothboats evolved from dinghies to skiffs but i just don't like the foil boat....... Quote Link to comment Share on other sites More sharing options...
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