Obtain A Polar Chart For College - SailNet Community
 
LinkBack Thread Tools
post #1 of 7 Old 02-27-2012 Thread Starter
Junior Member
 
Join Date: Feb 2012
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Obtain A Polar Chart For College

I am currently studying Computer Engineering, where I am completing a final year project on the optimisation of routes for sailing yachts. I have hit a bit of a bump in the road, and was hoping that someone here could help. I am looking for a polar plot of a yacht, giving optimal speeds at different wind speeds and angles. Any help would be greatly appreciated.
John.
jpphelan is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 7 Old 02-27-2012
Senior Member
 
Join Date: Dec 2003
Posts: 1,473
Thanks: 1
Thanked 26 Times in 25 Posts
Rep Power: 12
 
Like this?
Attached Thumbnails
polarDiag.gif  

"Just call me TB"
capttb is offline  
Quote Quick Reply Share with Facebook
post #3 of 7 Old 02-27-2012 Thread Starter
Junior Member
 
Join Date: Feb 2012
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
That will do perfectly. Thanks
jpphelan is offline  
Quote Quick Reply Share with Facebook
post #4 of 7 Old 02-27-2012
Senior Member
 
pdqaltair's Avatar
 
Join Date: Nov 2008
Location: Deale, MD
Posts: 2,600
Thanks: 1
Thanked 53 Times in 53 Posts
Rep Power: 7
 
Some are strictly generated by velocity prediction programs (for example, the Cat 34 plot shows the chute up in a 20knot breeze on a beam reach--that would be rather nuts, asking to break gear. MT boat in perfect trim, pushed to the limit on smooth water. A fun starting point for racers. Generally, they seem optimistic. This one has more supporting data.
http://www.pdq36.com/PDQ36%20polar%20diagram.pdf

Others built upon expereince with real boats.
Sail Delmarva: Speed Polars

Enjoy!

(when asked how he reached the starting holds on a difficult rock climbing problem that clearly favored taller climbers - he was perhaps 5'5")

"Well, I just climb up to them."

by Joe Brown, English rock climber




To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by pdqaltair; 02-27-2012 at 06:23 PM.
pdqaltair is offline  
Quote Quick Reply Share with Facebook
post #5 of 7 Old 02-27-2012
Sailboat Reboot
 
svzephyr44's Avatar
 
Join Date: Jun 2000
Location: On Board
Posts: 619
Thanks: 3
Thanked 50 Times in 44 Posts
Rep Power: 16
 
Send a message via Skype™ to svzephyr44
Smile

Quote:
Originally Posted by jpphelan View Post
I am currently studying Computer Engineering, where I am completing a final year project on the optimisation of routes for sailing yachts. I have hit a bit of a bump in the road, and was hoping that someone here could help. I am looking for a polar plot of a yacht, giving optimal speeds at different wind speeds and angles. Any help would be greatly appreciated.
John.
I for one am very interested in what you are building. Route planning for long cruises is computationally very difficult since taking the fastest next track may be sub-optimal in the long run. (A trip in light winds might position you for later more optimal winds. An example is leaving the Azores - you first head North to get out of the Azores high so you are in fact usually adding miles to your passage to get to favorable winds.) Add to that that other than using the Atlas of Pilot Charts to estimate winds you run out of forecasts long before you run out of transit.
svzephyr44 is offline  
Quote Quick Reply Share with Facebook
post #6 of 7 Old 02-28-2012
Senior Member
 
Zanshin's Avatar
 
Join Date: Aug 2006
Location: Germany
Posts: 2,297
Thanks: 0
Thanked 29 Times in 27 Posts
Rep Power: 10
 
Here's the Polar chart for my boat:

Jeanneau 57 Polar chart


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Zanshin is offline  
Quote Quick Reply Share with Facebook
post #7 of 7 Old 02-28-2012 Thread Starter
Junior Member
 
Join Date: Feb 2012
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Thanks so much for the level of response. Things are going well with the project, and may have caused love for a new sport that I otherwise was never really involved with.
jpphelan is offline  
Quote Quick Reply Share with Facebook
Reply

Tags
chart , college , computing , polar

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
C 27 TR Polar Chart Mark1948 Catalina 2 08-08-2012 10:17 PM
Uses for Chart plotters and chart plotting software harbin2 Gear & Maintenance 41 10-07-2011 11:03 PM
Length of Halyards Pacific Seacraft 34 & Would like to obtain arch. drawings retomas Pacific Seacraft 2 05-14-2011 12:47 PM
c&c 37' 1985 need to obtain owners manual HELP thanks nma C & C 2 04-02-2008 06:13 PM
Polar datas for X 412 ArcaneX Racing 1 09-25-2005 04:40 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome