Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-28-2013, 08:50 PM   #1 (permalink)
Eco Sol
 
Shortie771's Avatar
 
Join Date: May 2009
Location: Paradise, TX
Posts: 343
Thanks: 24
Thanked 88 Times in 52 Posts
Taking Advantage of Tail Winds?

Us as ecomodders try to streamline our cars so that we can cut through the air with as little resistance as possible. That is great and will always be helpful since we are moving our cars forward 99.78% (not real statistic) of the time. These modifications are extremely helpful when we are faced with a head wind, but if the wind is coming from any other direction they do us no good (other than fighting the resistance of our driving speed).

So, the question here is: Is there any way to take even greater advantage of side winds or tail winds, without negative effects?

I'm thinking something along the lines of reverse parachute.

__________________




Best Tank = 42.72 mpg (in the 94 Del Sol)

CR-Z Current Mods:
Max Sidewall PSI
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-29-2013, 11:18 PM   #2 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,687
Thanks: 8,143
Thanked 8,922 Times in 7,365 Posts
Maybe if you were moving considerably slower than the wind. Maybe.
  Reply With Quote
Old 05-29-2013, 11:26 PM   #3 (permalink)
Eco Sol
 
Shortie771's Avatar
 
Join Date: May 2009
Location: Paradise, TX
Posts: 343
Thanks: 24
Thanked 88 Times in 52 Posts
Ew, did not think of that... /fail

I wonder if it would be beneficial with a side wind? Probably not.. just going to add additional drag I suppose.
__________________




Best Tank = 42.72 mpg (in the 94 Del Sol)

CR-Z Current Mods:
Max Sidewall PSI
  Reply With Quote
Old 05-30-2013, 02:56 AM   #4 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,687
Thanks: 8,143
Thanked 8,922 Times in 7,365 Posts
Hey, you're considering things and asking questions.

If you want to see what can be done about sidewind performance look at the Morelli banana car.
  Reply With Quote
Old 05-30-2013, 05:41 PM   #5 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,306
Thanks: 24,436
Thanked 7,384 Times in 4,782 Posts
parachutes

Quote:
Originally Posted by Shortie771 View Post
Us as ecomodders try to streamline our cars so that we can cut through the air with as little resistance as possible. That is great and will always be helpful since we are moving our cars forward 99.78% (not real statistic) of the time. These modifications are extremely helpful when we are faced with a head wind, but if the wind is coming from any other direction they do us no good (other than fighting the resistance of our driving speed).

So, the question here is: Is there any way to take even greater advantage of side winds or tail winds, without negative effects?

I'm thinking something along the lines of reverse parachute.
As shown,they would simply fill with stagnant air and air acting against the 'transom' would just push against the buckets of dead air as if they were a solid surface.
If the entire transom area were concave it would catch air when 'struck' from behind,although as Freebeard has mentioned,would only 'show' at low speed,like a square-rigger sail.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
Old 11-22-2013, 01:39 PM   #6 (permalink)
EcoModding Apprentice
 
Join Date: May 2012
Location: Evansville Ill.
Posts: 101

sizematters - '08 smart 4-2 passion cabrio
90 day: 51.99 mpg (US)

escape - '06 Ford Escape xlt
90 day: 26.78 mpg (US)

Buick - '04 Buick Park Avenue Ultra
Team Turbocharged!
90 day: 27.26 mpg (US)
Thanks: 209
Thanked 25 Times in 17 Posts
Last weekend I made a road trip up north and had a very strong tailwind that at one point I slowed down to 55 mph (interstate was somewhat deserted) and for several miles the scangage was showing 99.6 mpg! At one point I was going 60 mph for several miles in neutral on flat ground! Tailwinds are definitely friendly for mpg. Chumly
__________________


  Reply With Quote
Old 11-22-2013, 02:35 PM   #7 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,187
Thanks: 132
Thanked 2,809 Times in 1,973 Posts
Quote:
Originally Posted by chumly View Post
Tailwinds are definitely friendly for mpg. Chumly
Just as with aircraft then?

Tailwind - Wikipedia, the free encyclopedia
Quote:
A tailwind is a wind that blows in the direction of travel of an object, while a headwind blows against the direction of travel. A tailwind increases the object's speed and reduces the time required to reach its destination, while a headwind has the opposite effect. Tailwinds and headwinds are commonly measured in relation to the speed of vehicles — commonly air and watercraft — as well as in running events — particularly sprints.
Some interesting math in the link above.

Windmobiles of Mr. Amick
http://ecomodder.com/forum/showthrea...ick-20412.html
__________________
George
Architect, Artist and Designer of Objects

2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

You cannot sell aerodynamics in a can............

Last edited by kach22i; 11-22-2013 at 02:43 PM..
  Reply With Quote
Old 11-22-2013, 03:17 PM   #8 (permalink)
PSmodder lurker
 
Join Date: Jan 2009
Location: Chino
Posts: 1,605
Thanks: 26
Thanked 908 Times in 522 Posts
DDWFTTW - directly downwind faster than the wind or 3x faster than the wind. DDWFTTW #1 on Vimeo

  Reply With Quote
Reply  Post New Thread






Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com