sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery
Sail-World.com : Benoit Marie at frontend of Mini-Transat after Yacht Research project
Benoit Marie at frontend of Mini-Transat after Yacht Research project


'Benoit Marie - 2013 Mini Transat research project - Yacht Resrach Unit -'    Yacht Research Unit - University of Auckland    Click Here to view large photo

Benoit Marie, currently lying a close second in the Mini Transat, studied for six months at the Yacht Research Unit at the University of Auckland.

Whilst at the Yacht Research Unit he built a 1/5 scale model of his Mini using flax-fibre composites which he then tested in the Twisted Flow Wind Tunnel. As well as generally optimising his sail plan, he looked in particular at the use of double-surface sails and their ability to perform more efficiently than conventional thin sails.

Benoit Marie - in the Twisted Wind Tunnel at the Yacht Reseract Unit, University of Auckland - 2013 Mini Transat research project -  Yacht Research Unit - University of Auckland   Click Here to view large photo

The prototype Mini 6.50s are at the cutting edge of design. The rule is as close to a true box rule as any come (just a few necessary stability requirements). Keels that cant and translate, rigs that cant to windward, water ballast and a huge sail area to displacement ratio, result in the most technically advanced boats around.

Benoit Marie - Yacht Research Unit, University of Auckland - 2013 Mini Transat research project -  Yacht Research Unit - University of Auckland  
The next major refinement will most likely come from the sails. The power produced by a reaching sail is basically dependent on the luff length. The Mini 6.50 suffers from a relatively short gennaker luff length compared to its chord because of the mast height limit. Increasing the efficiency around the luff will make the boat go faster.

By adding a double-surface (e.g. inflatable aerofoil) to the leading edge it's possible to significantly increase the efficiency and the amount of lift produced by the section. Just as inflatable battens are now commonplace in many headsails, the technology to hold a luff pocket inflated to the desired shape is available.

The wind tunnel results showed the double-surface gennaker to be more efficient than a conventional thin sail. Certainly there's some work to do in sorting the logistics, and how to inflate the sail once it's up, but the gains could easily be huge.

Why don't we see this used more often? Because the vast majority of racing rules prohibit it.

It's from development classes such as this that technology improvements will eventually trickle down into general racing and cruising.

In the images the double-surface luff of the gennaker can be seen. The Yacht Research Unit are not aware if Benoit carried this particular research project into the actual race - with handling the double surface luff still being an issue.

At latest report Benoit Marie was just 14nm behind the race leader with 970nm to the finish. The two had a big break on the rest of the fleet and were sailing faster - so the rich look set to get richer.

The Twisted Flow Wind tunnel is one of several specialist facilities at University of Auckland's School of Engineering, Yacht Research Unit

The Faculty of Engineering also has a range of state-of-the-art facilities, including:
• A Yacht Research Unit which has been involved in the design and testing of boats competing in the America’s Cup, Volvo Ocean Race, and many other regattas since its inception in 1987.
• Twisted Flow Wind Tunnel.
• Boundary Layer Wind Tunnel.
• Centre for Advanced Composite Materials.
• Light Metals Research Centre.

Graduates of the Auckland University School of Engineering include Olympic Gold medalist Russell Coutts, Olympic Bronze Medalist John Cutler, and 2012 Olympic Gold Medalist Jo Aleh and many more top international sailors.

David le Pelly is also a member of Emirates Team NZ's design team for the 34th America's Cup specialising in Aero and Instrumentation.

For more on the Yacht Research Unit click here

The finished project - Benoit Marie - 2013 Mini Transat research project -     Click Here to view large photo


by David le Pelly

  

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

http://www.sail-world.com/index.cfm?nid=117116

12:15 PM Thu 28 Nov 2013GMT


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

Click for further information on
2013 Auckland University School of Engineering

Related News Stories:

31 Aug 2013  America's Cup: A quick look at University of Auckland's Yacht Research




News - USA and the World









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






























Lightning strikes cut short CFJ Nationals by Andy Kopetzky, Santa Monica Bay


















America's Cup: Group agrees to co-operate in London Meeting by Richard Gladwell/Sail-World.com/nz,










Help clean up the sailing water at Rio - Image Gallery
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 On the Final two days of the 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
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
Gladwell's Line: America's Cup - Joint Statement is a curious note *Feature
ISAF Youth Match Racing World Champ - Top four battle it out for final   
BIC Techno 293 Worlds 2014 - Day 6   
PWA Fuerteventura Grand Slam - Wind teases competitors on day 2   
Women’s Match Race Golfe du Morbihan - Action-packed day of racing   
Herreshoff Marine Museum announces successful fundraising campaign   
Brewin Dolphin Commodores' Cup - The most comprehensive victory yet   
Anna Tunnicliffe holds fourth at mid-point of Reebok CrossFit Games   
2014 29er North American Open Championship - Australians win   
INSA Sabot II Invitational Regatta - Erik Hou claims victory   
CMRC Summer Invitational Series - Maxi Soh wins Doubleheader A event   
International Moth World Championships - Nathan Outteridge wins   
International Moth Worlds - Victory for Nathan Outteridge + Video   
PWA Fuerteventura Grand Slam - First blood to Toselli and Angulo   
Melges 24 Nationals - Record entries for 2014 and 2015 venue revealed   
Women’s Match Race Golfe du Morbihan - Anna Kjellberg claims the lead   
Jessica Uniack Memorial Beach to Bay Race at Long Beach YC   
Laser Radial Men’s World Championship - Poland tops the leaderboard   
America's Cup - Four teams confirm full support regardless of venue   
Plastic Classic takes place at Mariposa Hunters Point YC   
Six Metre European Championship - No champion declared for 2014   


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