Wind speed detectors - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest > General Discussion (sailing related)
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #1  
Old 10-24-2001
Junior Member
 
Join Date: Oct 2001
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
BiscuitBandit is on a distinguished road
Wind speed detectors

Hello all.
I am currently making a handheld wind speed detector for a school project and I have been made aware that many keen boaters/sailors use these devices. I would be most grateful (and happy) if anyone who has or wants such a device could contact me with any information about these devices. Things such as why you need or want one, what the advantages of having one are and where to get one from would be handy.
Thanks.
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 11-03-2001
Member
 
Join Date: Mar 2001
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
loki is on a distinguished road
Wind speed detectors

BiscuitBandit;
Wind speed meters or anemometers are used by boating people in order to determine what sails to use. As the wind speed increases the amount of sail area has to be reduced. Many racing boats have sails designed for limited wind velocitys, say 8-12mph. Many sailors can judge approximate wind speed by the feel of the wind or condition of waves but an anenometer is much more accurate
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 11-04-2001
Jeff_H's Avatar
Moderator
 
Join Date: Feb 2000
Location: Annapolis, Md
Posts: 6,664
Thanks: 5
Thanked 103 Times in 79 Posts
Rep Power: 10
Jeff_H has a spectacular aura about Jeff_H has a spectacular aura about Jeff_H has a spectacular aura about
Wind speed detectors

Winds speed and direction indicators have a lot of uses in sailing but really come into their own for racing applications or for electronic navigation. This is especially true when tied into other instruments such as a knotmeter, electronic compass and an autopilot.

The bad news is that electronic wind instruments are terribly inaccurate in an absolute sense. Air density varies with temperature and since most wind instuments operate on impact (Newton''s theory) rather than due to aerodynamics (like an airplane wing) the readings of a wind instrument calibrated in summer can be very inaccurate in colder weather. But racers generally are only looking for relative information (as in is there more wind and more speed than their was a moment ago) and so wind instuments work fine for most racing applications.

On racing sailboats the sail trimmers and helmsman need information to fine tune thier performance. If you are tring to agdjust course and sail trim for maximum speed and you only had a knotmeter to tell how fast the boat is moving you could not tell if a speed change was because of something you were doing differently or whether the wind had changed. After a while, you learn what the ''numbers'' should be for a given boat and can quickly look and tell if your boatspeed is consistent with the windspeed.

Tied to a knotmeter, more sophisticated wind instuments can tell you true wind speed and true wind direction and tied to an electronic compass it can give you Velocity made good (the speed at which you are actually moving upwind or down) so you can find the best course to the upwind or downwind mark.

For cruisers, Autopilots can use a combination of true wind speed, true wind direction and information from an electronic compass on the boat''s compass course to allow an electronic autopilot to keep a boat on course relative to the wind.

Good luck with your project,
Jeff
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 11-05-2001
Senior Member
 
Join Date: Nov 2000
Posts: 160
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 15
newuser is on a distinguished road
Wind speed detectors

I wont repeat what the others have already said but there are some sites where u can find out about the wind speed devices, www.flytec.com is one site that sells such devices and it gives you details about the products. There is an article on this site where Tom Wood reviews one particular device but i cant find the article anymore, but u might be better at finding it than me
Good luck and i hope this helps
Reply With Quote Quick reply to this message Share with Facebook
Reply

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:

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

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Windward performance deseely General Discussion (sailing related) 21 04-01-2012 03:42 PM
wind vane musolmar Learning to Sail 7 09-01-2004 12:40 PM
Close Hauled Tactics djakunda Seamanship & Navigation 2 05-16-2003 07:10 AM
Ayrodynamics of Sailing ZachW. Learning to Sail 9 05-30-2002 11:41 AM
ideal wind speed? brucemcald Learning to Sail 9 07-21-2001 06:30 PM


All times are GMT -4. The time now is 12:59 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.