sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery
Sail-World.com : ORC announce Velocity Prediction Program improvements
ORC announce Velocity Prediction Program improvements

'ORC Announces Major New Improvement To 2013 Vpp'    ORC

On the occasion of its 43rd Annual General Meeting, the Offshore Racing Congress (ORC) is happy to announce a major step forward in the accuracy of its Velocity Prediction Program (VPP) to be implemented for the 2013 sailing season. One of the principal aspects of this program, the Residuary Resistance (Rr) formulation, has been revised to now be more accurate for a broader range of yacht types that race within the ORC fleet database.

This new innovation is the result of an extensive multi-year study conducted by the International Technical Committee (ITC) in which historical data derived from tank test results has been combined with new research using Computational Fluid Dynamic (CFD) tools to create the new formulation.

'This is a huge step forward in solving a difficult problem which has faced VPP research for many years,' says Bruno Finzi, Chairman of ORC. 'The Congress applauds the ITC for the completion of this major project that will benefit all boats racing in the ORC fleets around the world.'

The new Rr formulation used in the new VPP is producing theoretical predictions which are much closer to the measured performance data taken from numerous boats in the ORC fleet.

'We looked at this carefully to help validate our results. The implied wind calculations are also much closer to that observed on the race course,' says Alessandro Nazareth, Chairman of ITC.

The Rr project's new formulation was the result of collating the relevant Delft Systematic data, analyzed by ITC member Kay Enno Brink and the CFD results coming from ITC's Philippe Pallu's work at CRAIN and the Fine-marine code work performed by new ITC member Jason Ker. Another ITC member working on this project was Andy Claughton of Southampton University.

'Validation of this new formulation has been very important to ensure that all elements of the fleet are treated fairly,' says Claughton. 'Our tests indicate that if any race from the past is rescored using the new rule the spread of corrected times for the first 10 or 15 boats is reduced, sometimes by 20-30%. This is fantastic progress.'

For more information on ORC's test fleet using the new 2013 VPP, visit the ORC website.


by Offshore Racing Congress

  

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

http://www.sail-world.com/index.cfm?nid=103566

7:01 PM Tue 6 Nov 2012GMT


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







News - USA and the World





America's Cup: Alameda makes overtures on Venue hosting for San Fran *Feature by Richard Gladwell/Sail-World.com/nz,




































2014 Pacific Cup - Scarlet Runner wins by Vanessa Yates, Hawaii


























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
J/Teams sail tough Chicago Mackinac Race
Anna Tunnicliffe wins first event of Reebok Cross Fit Games + Video
2014 Pacific Cup - Skill and luck required for victory
Six Metre European Championship - Action resumes on day 4
BIC Techno 293 Worlds 2014 - Day 4
PWA Fuerteventura Grand Slam on the horizon
Rolex Big Boat Series - Golden Jubilee to take place this September
DH Pacific Cup - Running with the pack + Video
Women's Match Race Golfe du Morbihan - Testing day in Vannes
Brewin Dolphin Commodores' Cup - Ireland establishes solid lead
International Moth Worlds: Outteridge charges into the lead + Video
Marina Rubicón Round Canary Islands Race - First blood to Team Brunel
ISAF Youth Match Racing Worlds - Competition heats up on day 2   
Laser Radial World Championships - Competition aplenty on day 3 +Video   
Extreme Sailing Series - Penultimate Act to take place in Nice   
Leukemia Cup - Images by Leighton O'Connor   
Maxi Yacht Rolex Cup - Meeting of the grand designs   
29er North American Championship - Final series kicks off   
29er World Championship 2014 set to start in Kingston, Ontario   
Barcelona and Parnu chosen for 2015 ORC championship events   
2014 Race for Rady Yacht Race - Benefiting Rady Children’s hospital   
CMRC Summer Invitational Series - Doubleheader events start tomorrow   
BIC Techno 293 Worlds 2014 - Day 3   
Sailing through STEM Night at California YC   
Six Metre European Championship - High temps and little wind on day 3   
Women’s Match Race Golfe du Morbihan - Light wind opener in Vannes   
International Moth Worlds: Rashley ahead as Aussies close in   
Brewin Dolphin Commodores' Cup - Unsatisfactory conditions on day 4   
ISAF Youth Match Racing Worlds - American unbeatable on day 1   
RS Feva World Championships - All set at Yacht Club de Carnac   
ISAF Rolex World Sailor of the Year Awards - Nominations now open   
BIC Techno 293 Worlds - Steady winds on day 2 + Video   


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