01-14-2023, 06:51 AM
|
#1161 (permalink)
|
|
Master EcoModder
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,159
Thanks: 120
Thanked 2,790 Times in 1,959 Posts
|
|
|
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
01-15-2023, 07:13 PM
|
#1162 (permalink)
|
|
Master EcoModder
Join Date: Dec 2014
Location: Radium Springs, NM
Posts: 465
Thanks: 2
Thanked 528 Times in 278 Posts
|
https://youtu.be/GEiMi1GNKM0
Superfast Matt video on how many cars bodies would be more aerodynamic if they were backwards.
__________________
|
|
|
|
|
The Following 2 Users Say Thank You to aerostealth For This Useful Post:
|
|
|
01-15-2023, 07:56 PM
|
#1163 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,752
Thanks: 7,796
Thanked 8,597 Times in 7,080 Posts
|
"There is no place with fewer corners than the Bonneville Salt Flats." 
The humor is well-delivered, but I was disappointed to learn about NACA ducts. I wonder how an Artificial_lntelligence would optimize an air inlet.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.Two wrongs don't make a right, but three lefts do.
|
|
|
|
|
The Following User Says Thank You to freebeard For This Useful Post:
|
|
|
01-19-2023, 10:42 AM
|
#1164 (permalink)
|
|
Master EcoModder
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,909
Thanks: 23,994
Thanked 7,227 Times in 4,654 Posts
|
NACA submerged inlet
Quote:
Originally Posted by freebeard
"There is no place with fewer corners than the Bonneville Salt Flats."
The humor is well-delivered, but I was disappointed to learn about NACA ducts. I wonder how an Artificial_lntelligence would optimize an air inlet. |
I didn't see that addressed in the video. Can you steer us to that?
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
|
|
|
|
|
01-19-2023, 12:10 PM
|
#1165 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,752
Thanks: 7,796
Thanked 8,597 Times in 7,080 Posts
|
I thought I'd addressed this in in another thread, but for you I figured it out again.
I was wrong , it was a follow-up recommended video.
The Aerodynamics of Speed at 17:40
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.Two wrongs don't make a right, but three lefts do.
|
|
|
|
|
01-19-2023, 12:48 PM
|
#1166 (permalink)
|
|
EcoModding Apprentice
Join Date: May 2008
Location: N. Saskatchewan, CA
Posts: 1,805
Thanks: 91
Thanked 459 Times in 327 Posts
|
The way I heard it, the NACA duct was intended for low-flow situations, such as cockpit ventilation. I'm sure that AI would look at the overall situation and only recommend a NACA duct if no high-pressure area was nearby.
Regarding how to design a fast car, I still like John Cobb's approach, choosing a shape with the minimum surface drag rather than minimum frontal area, and fitting the machinery into that.
__________________
There is no excuse for a land vehicle to weigh more than its average payload.
|
|
|
|
|
The Following User Says Thank You to Bicycle Bob For This Useful Post:
|
|
|
01-19-2023, 01:27 PM
|
#1167 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,752
Thanks: 7,796
Thanked 8,597 Times in 7,080 Posts
|
Quote:
|
The way I heard it, the NACA duct was intended for low-flow situations
|
What do you think of the fences?
[I ganked a screenshot, but Ubuntu's Shotwell app is weak]
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.Two wrongs don't make a right, but three lefts do.
|
|
|
|
|
01-19-2023, 01:44 PM
|
#1168 (permalink)
|
|
EcoModding Apprentice
Join Date: May 2008
Location: N. Saskatchewan, CA
Posts: 1,805
Thanks: 91
Thanked 459 Times in 327 Posts
|
I'd never seen the fences before. Maybe they help if it is in a basically unsuitable location near the rear, and the customer really likes the styling.
__________________
There is no excuse for a land vehicle to weigh more than its average payload.
|
|
|
|
|
The Following User Says Thank You to Bicycle Bob For This Useful Post:
|
|
|
01-19-2023, 02:11 PM
|
#1169 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,752
Thanks: 7,796
Thanked 8,597 Times in 7,080 Posts
|
My thought was that it would augment the vortexes. But I wonder if the effect would increase or decrease with air speed.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.Two wrongs don't make a right, but three lefts do.
|
|
|
|
|
01-20-2023, 10:23 AM
|
#1170 (permalink)
|
|
Somewhat crazed
Join Date: Sep 2013
Location: 1826 miles WSW of Normal
Posts: 4,093
Thanks: 470
Thanked 1,120 Times in 989 Posts
|
The small experiences my excompany had attempting to make the nasa flush duct for aerospatial tells me it's really fussy in the original configuration. We met the drawing tolerances, modded it even more to meet the original nasa specs and were told it never went low drag. Come to find out NASA had the same issues. Does work well for a flush duct, but not what Nasa promised.
__________________
casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
|
|
|
|
|
The Following 2 Users Say Thank You to Piotrsko For This Useful Post:
|
|
|
