01-14-2023, 07:51 AM
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#1161 (permalink)
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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............
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01-15-2023, 08:13 PM
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#1162 (permalink)
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https://youtu.be/GEiMi1GNKM0
Superfast Matt video on how many cars bodies would be more aerodynamic if they were backwards.
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01-15-2023, 08:56 PM
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#1163 (permalink)
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"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.
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01-19-2023, 11:42 AM
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#1164 (permalink)
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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?
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01-19-2023, 01:10 PM
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#1165 (permalink)
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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
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
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-- Sabine Hossenfelder
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01-19-2023, 01:48 PM
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#1166 (permalink)
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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.
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01-19-2023, 02:27 PM
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#1167 (permalink)
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Quote:
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The way I heard it, the NACA duct was intended for low-flow situations
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What do you think of the fences?
[I ganked a screenshot, but Ubuntu's Shotwell app is weak]
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
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-- Sabine Hossenfelder
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01-19-2023, 02:44 PM
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#1168 (permalink)
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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.
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There is no excuse for a land vehicle to weigh more than its average payload.
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01-19-2023, 03:11 PM
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#1169 (permalink)
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Master EcoModder
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My thought was that it would augment the vortexes. But I wonder if the effect would increase or decrease with air speed.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
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-- Sabine Hossenfelder
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01-20-2023, 11:23 AM
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#1170 (permalink)
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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.
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