sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery

 

Sail-World.com : Sailrocket 2 World Speed Sailing record attempt - Day 1

Sailrocket 2 World Speed Sailing record attempt - Day 1

'Sailrocket 2'    Vestas Sailrocket - copyright
The team behind the Vestas Sailrocket 2 program are returning to Walvis Bay in Namibia to continue their quest to set the outright world speed sailing record.

Paul Larsen:

Here we are, direct from the first day of our first world record attempt with Vestas Sailrocket 2.

Mike Ellison from the WSSRC is now on-site to watch over our upcoming attempts.

We had to commit to this attempt around a month ago due to the rules of the WSSRC. We were hoping to be hitting world record speeds before booking a record attempt but we aren't quite there yet. We are close in some ways but still yet to convert. Nonetheless, I am entirely comfortable with commencing the record period now and believe that we have every chance of success.

On our last run we ventured out in over-the-top conditions and did it with ease. Of course we were hoping for higher top speeds but in hindsight what we demonstrated was the capability of the boat and team to operate in all conditions. from here on in the rest is down to refinement.

Whilst most casual viewers will just look at the final speeds, so much of the big problem is making a boat that can be handled safely in every other situation that will allow it to get into its ideal operating environment. Putting a wing up in waste deep water on a windsweapt beach with winds over 30 knots can very quickly go wrong if you are not in control. It is often the fear of this that stops you from doing it. We no longer fear this which means we can now pour on the free power of stronger winds if we have to. One problem here is that with stronger winds comes bigger chop. Vestas Sailrocket 2 copped a real pounding on that last run. Every part of the boat got jerked, flexed and wrenched and yet she was stable and in control throughout. She's a tough boat as she is made for much higher speeds.

So, refinement eh? It would appear that what we did on that last run was simply throw a heap more power into the equation... but not go any faster. This would suggest that we have hit a wall. The speeds of around the low-50's would suggest that there is some sort of cavitation happening that is not ideal. I say 'ideal' as the new wedge foil is designed to utilise either cavitation or ventilation. I believe that there is a whole world to explore between the attached flow of water we are used to on conventional foils and the other extreme of fully 'super-cavitating' sections where a bubble of air in one form or another breaks off the low pressure side and extends way past the the back/Trailing-edge of the foil. From a hydrodynamic point of view it's pretty fascinating.

In a way we are trying to make the new foil lose 'grip' with the water on one side... but we don't think it is. We have now added a little ridge on the back of the foil to help trip the flow of water off it. In some ways it's like driving sideways in a car. In order to get into the best sideways cornering mode you need to trip the car to make it lose grip and slip sideways initially. You need to jerk it out of balance.

In our case we don't want to make the flow so messy that it destroys our low speed performance so much that we can't get going. We need to play with the size, shape and position of this little 1mm high ridge so that it trips the water at just the right time. Well, we are very well placed now to play with this. VESTAS Sailrocket 2 has put us squarely in the laboratory and all the ingredients are in place. The boat is right and the foil we have is a great starting point.

We must also keep our eyes open for what we may be missing. Sometimes there are silly, basic things that you look back at and can't believe you missed. This is where all the video and data collection becomes so vital. Every time you watch a video you see something different. It might be where the spray is hitting or the angle of the wake. There is just so much info there.

Anyway, here we are... and it feels good. I am always nervous about the little gremlins that can creep in and undo all your hardwork in an instant. We have extended the tail of the boat by 1 meter to increase the shroud base and make it more stable whilst rigging and launching. This process has enabled us to change all the rigging (thanks Marlow), remove any unnecessary items and add dormant safety features throughout. We will continue to go over the boat every day.

The kitesurfers in Luderitz have finished their attempt. We have a complex boat, they have a complex course. The record we are chasing remains that set by Rob Douglas at 55.65 knots.

Are you getting the impression I want it? Good:)

Cheers, Paul.

Latest update: Flat calm today, we might get an easy shakedown sail tomorrow. Monday still looks best!

Vestas Sailrocket 2 website




by Paul Larsen

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=90949

2:39 AM Sun 20 Nov 2011 GMT






Click here for printer friendly version
Click here to send us feedback or comments about this story.


News - USA and the World



















The first annual WetaFresh is a big success by Tim Wieringa, Muskegon, MI


















Techno 293 Worlds - France and Italy claim titles by International Windsurfing Association,














420 World Championship - Singapore and Spain out front by 420 International Class Association,
















Round Britain and Ireland Race 2014 - Tactics, endurance, achievement
Alpari World Match Racing Tour moves on to Poland + Video
2014 ISAF Sailing World Cup final qualification system published
Chicago Yacht Club Race to Mackinac - Karma Sailing Group wins
Red Bull 49erFX: Easing into the Olympic scene at Rio
Kempe thrilled to invite himself to Gold Cup party
2014 420 World Championships - Singapore wins Day 2 race
Lightning strikes cut short CFJ Nationals
Etchells Invitational Cup - Girls on top in Cowes
National Sailing Hall of Fame reveals inductees
J/111 North American Championship - Wind Czar victorious
Sevenstar Round Britain and Ireland Race sets off August 10th
PWA Fuerteventura Grand Slam - Antoine Albeau victorious on day 5
Snipe Western Hemisphere and Orient Championship headed for San Diego
WPA Championships - Kids race divisions offered
New Clever Pig launched by US Sailing
America's Cup: Group agrees to co-operate in London Meeting
Copa del Rey Mapfre - Build-up reveals some remarkable enthusiasm
Marblehead NOOD Regatta - Images by Leighton O'Connor
America's Cup: Two AC72 skippers discuss Foiling Moths and the Cup
RS Feva World Championship - Brilliant sailing on day 2   
America's Cup: Alameda makes overtures on Venue hosting for San Fran *Feature   
Cape Panwa Hotel Phuket Race Week 2014 - Relishing a challenge   
Edgartown Race Weekend - BBBR and Round-the-Island Race winners named   
Etchells Invitational Cup - Aussies take early lead in Cowes   
PWA Fuerteventura Grand Slam - Antoine Albeau strikes back on day 4   
Aquece Rio – International Sailing Regatta - All set for test event   
ISAF World Sailing Rankings for 28 July 2014   
29er World Championship - All set in Kingston   
ORC World Championship - Third Course area opens for huge fleet   
Day one of the Allen RS Feva World Championships   
Anna Tunnicliffe: Final two days of the 2014 Reebok CrossFit Games   
Joachim Aschenbrenner takes gold at ISAF Youth Match Race Worlds 2014   
Maxi Soh scores double wins in CMRC Summer Doubleheader   
29er World Championship opening ceremonies in Confederation Park   
PWA Fuerteventura Grand Slam - Action resumes on day 3   
Vic-Maui Yacht Race - Polishing the silverware   
Land Rover Sydney Gold Coast Yacht Race Start 2014 VIDEO   
Laser Radial Men’s World Championship 2014- Final day   
2014 Pacific Cup - Scarlet Runner wins   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL NEW US
LocalAds   DE  ES  FR  IT