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

Now available from EcoModder: ScanGauge II fuel economy gauge.  Click for details.  

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-18-2012, 07:18 AM   #1 (permalink)
EcoModding Apprentice
 
Join Date: Nov 2009
Location: Michigan
Posts: 111
Thanks: 9
Thanked 20 Times in 13 Posts
Air Force to immitate geese.

Someone finally realized what a birdbrain figured out long ago. Use the slipstream to reduce drag.

U.S. Air Force goes vortex surfing to cut fuel consumption

  Reply With Quote
The Following 4 Users Say Thank You to rbrowning For This Useful Post:
aerohead (10-19-2012), AndrzejM (10-18-2012), Cd (11-01-2012), ECONORAM (10-31-2012)
Old 10-18-2012, 10:45 AM   #2 (permalink)
...beats walking...
 
Old Tele man's Avatar
 
Join Date: Jul 2009
Location: Tucson, AZ
Posts: 5,091

'04 Vibe - '04 Pontiac Vibe Base (1ZZ-FE)
90 day: 29.19 mpg (US)

'14 Prius - '14 Toyota Prius Four (2XR-FXE)
90 day: 46.43 mpg (US)
Thanks: 93
Thanked 823 Times in 616 Posts
...called "echelon" formation flying.
__________________
2014 Toyota Prius 1.8L eCVT < new >
2009 Pontiac Vibe 1.8L/SFI 4A
2004 Pontiac Vibe 1.8L/MFI 4A

2011 Chevrolet LTZ Cruze 1.4LT 6A < old >
1971 Dodge Charger 318 3A
1970 Plymouth AAR 'Cuda 340/6BBL 4M
1968 Dodge Charger 383 3A
1967 Plymouth Barracuda Formula S 383 4M
1965 Plymouth Barracuda Formula S 273 4M
  Reply With Quote
The Following User Says Thank You to Old Tele man For This Useful Post:
aerohead (10-19-2012)
Old 10-31-2012, 11:51 PM   #3 (permalink)
halos.com
 
Join Date: Oct 2009
Location: Cibolo, TX
Posts: 442

ECONORAM - '07 Dodge RAM 1500 QC SLT flex-fuel
90 day: 18.76 mpg (US)

the Avenger - '08 Dodge Avenger SXT
90 day: 27.06 mpg (US)
Thanks: 288
Thanked 61 Times in 56 Posts
Send a message via Yahoo to ECONORAM
Well, we humans aren't really the sharpest knives in the drawer. It took us over a 100 years of flight to mimic what God's done with birds for millennia...
  Reply With Quote
Old 11-01-2012, 12:24 AM   #4 (permalink)
Ride your bike!
 
Sven7's Avatar
 
Join Date: Aug 2011
Location: Warren, MI
Posts: 2,143

Boo Radley - '65 Ford F100
90 day: 13.7 mpg (US)
Thanks: 671
Thanked 485 Times in 296 Posts
Quote:
Originally Posted by ECONORAM View Post
Well, we humans aren't really the sharpest knives in the drawer. It took us over a 100 years of flight to mimic what God's done with birds for millennia...
Yeah it took us 100 years while God was whittling away for millions of years.
Aren't we slow!

And yet birds still can't master the stick shift.

I thought some wing designs were supposed to mitigate those vortexes. For instance, Airbuses' upturned wing tips.

__________________
I'm building a strange bicycle.

Last edited by Sven7; 11-01-2012 at 12:41 AM..
  Reply With Quote
Old 11-01-2012, 09:39 PM   #5 (permalink)
OCD Master EcoModder
 
brucepick's Avatar
 
Join Date: Dec 2007
Location: Eastern CT, USA
Posts: 1,660

According to Hoyle - '96 Honda Accord DX
Team Honda
90 day: 40.6 mpg (US)
Thanks: 218
Thanked 210 Times in 156 Posts
An especially interesting read for me.

i work at Pratt & Whitney, the designer and builder of the F117 engines that power the C-17 Globemaster III transport. My daily work is in support of that fleet of engines. Very neat to see my work and my other interest intersect here.
__________________
Check your tire pressure - keep it up !!

We've learned that diet has a closer relationship to cancer than we ever thought. Please see this Wikipedia article on The China Study.

Driving '96 Accord DX. Planning on an Elio enclosed three-wheeler, due out 3rd-4th quarter 2015.


  Reply With Quote
Old 11-20-2012, 10:54 PM   #6 (permalink)
halos.com
 
Join Date: Oct 2009
Location: Cibolo, TX
Posts: 442

ECONORAM - '07 Dodge RAM 1500 QC SLT flex-fuel
90 day: 18.76 mpg (US)

the Avenger - '08 Dodge Avenger SXT
90 day: 27.06 mpg (US)
Thanks: 288
Thanked 61 Times in 56 Posts
Send a message via Yahoo to ECONORAM
Quote:
Originally Posted by Sven7 View Post
Yeah it took us 100 years while God was whittling away for millions of years.
Aren't we slow!

And yet birds still can't master the stick shift.

I thought some wing designs were supposed to mitigate those vortexes. For instance, Airbuses' upturned wing tips.

I think you mis-read my post. God did it in milliseconds; He has been doing it for millenia...

True; ain't seen a bird stick shift yet...
  Reply With Quote
Old 11-20-2012, 11:22 PM   #7 (permalink)
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,888

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,357
Thanked 418 Times in 347 Posts
Quote:
Originally Posted by ECONORAM View Post
I think you mis-read my post. God did it in milliseconds; He has been doing it for millenia...

True; ain't seen a bird stick shift yet...
The first birds showed up more than "millenia" ago. I'm not gonna argue the "god" point with you because such a discussion has no place here, but flighted animals have been around much longer than you suggest, and took quite a long time to evolve.
__________________
"ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
The Following 2 Users Say Thank You to Christ For This Useful Post:
jamesqf (11-24-2012), Sven7 (11-21-2012)
Old 11-21-2012, 02:55 AM   #8 (permalink)
EcoModding Apprentice
 
Join Date: May 2008
Location: Dallas, Texas
Posts: 110
Thanks: 35
Thanked 15 Times in 9 Posts
Seems like they did it in WWII

  Reply With Quote
Old 11-21-2012, 09:29 AM   #9 (permalink)
Master EcoModder
 
basjoos's Avatar
 
Join Date: Dec 2007
Location: Upstate SC
Posts: 939

Aerocivic - '92 Honda Civic CX
Last 3: 70.54 mpg (US)

AerocivicLB - '92 Honda Civic CX
Team Honda
90 day: 83.03 mpg (US)
Thanks: 2
Thanked 350 Times in 180 Posts
Its called the "finger four" formation (the leftmost group in the photo above). The Germans developed it, not for fuel economy, but rather so the fighter pilots could fly in a group while spending time scanning for the enemy rather than having to concentrate on maintaining a close formation while avoiding running into the aircraft in front of them.
__________________
aerocivic.com
  Reply With Quote
Old 11-21-2012, 10:01 PM   #10 (permalink)
Master EcoModder
 
JRMichler's Avatar
 
Join Date: Feb 2011
Location: Ashland, WI
Posts: 667

Nameless - '06 GMC Canyon
90 day: 38.02 mpg (US)
Thanks: 96
Thanked 167 Times in 124 Posts
Q: When geese fly in V-formation, why is one side of the vee longer?

A: Because there's more geese on that side.

__________________
Winter 2011-2012 was warm, so average mileage only dropped to 30.1 MPG. Summer 2014 was not as warm as previous summers, but the addition of the vacuum gauge helped increase summer mileage to 38.2 MPG.
  Reply With Quote
Reply  Post New Thread

Thread Tools





Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com