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-   -   0.146 (https://ecomodder.com/forum/showthread.php/0-146-a-38391.html)

Hersbird 05-28-2020 02:52 PM

0.146
 
Wow, and it looks great too.
https://youtu.be/fPvkK70t0f8


https://www.youtube.com/watch?v=fPvk...ature=youtu.be

redneck 05-28-2020 03:26 PM

.

I like it...

😎

>

.

California98Civic 05-28-2020 04:44 PM

Very nice. Very "template." And lots of great tapering around the passenger compartment when seen from above. Clearly being marketed to an Asian market primarily, given the rhetorical style of the promo language that dominate the latter portion. Veiled Buddhism references (lotus) and Asian painting styles, mainly Japanese and Chinese watercolors.

JulianEdgar 05-29-2020 03:01 AM

Dear me.

https://i.postimg.cc/ZqzQ0Nsc/separation.png

ptitviet 05-29-2020 05:53 AM

Looks nice, but how can you make a car like this roll on a real road when you see the distance between wheels and wheel arches?

redneck 05-29-2020 10:40 AM

.

Julian’s post made me go back and watch the video again this time paying attention. The windtunnel smoke shots are questionable to say the least.


https://i.postimg.cc/mr1rwRfV/A6-FD6...AFBB296323.png



0.146 ...???


As the old saying goes...


Extraordinary claims require extraordinary evidence...


Hopefully they’ll release more information regarding how they came up with that number.


I still like the styling and the interior layout .


>

.

aerohead 05-29-2020 01:47 PM

smoke shot
 
Quote:

Originally Posted by redneck (Post 625297)
.

Julian’s post made me go back and watch the video again this time paying attention. The windtunnel smoke shots are questionable to say the least.


https://i.postimg.cc/mr1rwRfV/A6-FD6...AFBB296323.png



0.146 ...???


As the old saying goes...


Extraordinary claims require extraordinary evidence...


Hopefully they’ll release more information regarding how they came up with that number.


I still like the styling and the interior layout .


>

.

Looks like sub-critical Reynolds number, and a laminar boundary layer, which would be incapable of following the aft-body contour. They need at least 20-mph full-scale dynamic similarity ( verisimilitude).

aerohead 05-29-2020 02:21 PM

3-D printed structures
 
I bit on this one. They're moving towards the cubic-octet, super-strength, structural-foam,synthetic bird-bone, which is a revolution in materials technology.:thumbup:

freebeard 05-29-2020 02:53 PM

Bucky Fuller would approve. :thumbup:

Good close-ups in a walk-around for the first 4 minutes, then they lapse into English. Low Cd conflated with top speed in the title.
https://www.youtube.com/watch?v=CAJljOc3_iM

I question how they could get to that Cd with open wheel wells. The face of the wheel/tire is monolithic (with a cut line) do they clock the wheel and tire?

The green —excuse me, Shady Lake— strip around the wheel opening may be a flexible material.

The door is massive, maybe 75% the length of the car, plus half the front wheel well. Lifted from the Ford Eos concept that had four doors. You do get those little gullwing hatches in the tail.

https://ecomodder.com/forum/member-f...llpaper-09.jpg

Six passengers or 5˝?

California98Civic 05-29-2020 04:33 PM

That rumble seat is pretty cool. Clever positioning of a child safety seat too. Close to the adults at the front but not taking up a seat for itself.

freebeard 05-29-2020 08:05 PM

https://i.pinimg.com/originals/b5/c5...18dd711ebf.jpg
https://i.pinimg.com/originals/b5/c5...18dd711ebf.jpg
I can't find a picture of the interior of Rod Emory's 356 Special, but it had a child seat in a 2+˝ configuration. 356s don't have any rear legroom anyway.

Anyways the wind tunnel pix are beside the point. Anything interesting is happening in the underbody. It's probably like an Aston Martin Valkyrie, a car shape draped over some black voodoo magik that involves a front wing and rear difusser boxes.

California98Civic 05-30-2020 12:31 AM

Quote:

Originally Posted by freebeard (Post 625339)

Isn't that just a thing of beauty?

A further thought about the seating arrangment... the designers pretty cleverly made the tapered passenger cabin into a plausibly functional space despite the 2/2/1 seating row arrangement. They got the baby into the game. And grandma sits in the rumble seat. Clever marketing story, though who knows how many will buy it, if it ever comes to market.

freebeard 05-30-2020 03:23 AM

Even less chance I could find a picture of a car I saw at the 1960[ish] Portland Roadster Show. Someone had taken a Chrysler sedan and cut it down into effectively a purple Crossfire. It had a scaled down [matching] bucket seat above the differential.

A diamond shaped cabin seems to fit between the four wheel wells once the engine compartment is gone.

Hersbird 05-30-2020 01:32 PM

Quote:

Originally Posted by redneck (Post 625297)
.

Julian’s post made me go back and watch the video again this time paying attention. The windtunnel smoke shots are questionable to say the least.


https://i.postimg.cc/mr1rwRfV/A6-FD6...AFBB296323.png



0.146 ...???


As the old saying goes...


Extraordinary claims require extraordinary evidence...


Hopefully they’ll release more information regarding how they came up with that number.


I still like the styling and the interior layout .


>

.

I saw that as well. While the air is disturbed, is it really then pulled along with drag? I assume the full scale wind tunnel has the ability to measure the Cd no matter what the smoke is showing.

I agree it's hard to trust China.

MeteorGray 05-31-2020 10:17 AM

Trust China?

The only way to trust a communist regime is to pay close attention to what they say.

Then, run the other way AFAP.

serialk11r 06-01-2020 04:03 AM

I'm guessing 0.146 goes up by some when you put cooling radiators in.

The front opening is channeling air under the car, I wonder how that's done. Lots of cars coming out with clever underbody these days. Center tunnel could be used to channel air without as much ground effect.

Tires look BMW i3 skinny:
https://autodesignmagazine.com/wp-co...AC_ENO.146.jpg

That's gotta be ...155? 165?

The concave rear end makes me wonder if they discovered something about how to make a better "fluid tail".

freebeard 06-01-2020 01:51 PM

Quote:

The concave rear end makes me wonder if they discovered something about how to make a better "fluid tail".
If nothing else, the compound curved panel could be lighter than a flat plate.

The lights mimic the Cypbertruck and the front corners are compound curve variants on the chamfered corner of the same Cybertuck.

Agreed the underside is probably where the interesting stuff is.

freebeard 06-01-2020 04:09 PM

It's scary to think what the Chinese people could accomplish if they weren't besotted with bad governance.

https://www.youtube.com/watch?v=KNPdPOTTTWk

edit: I'd hate for this thread to get locked too.

Nice HQ, eh?

MetroMPG 06-01-2020 08:24 PM

I liked it from the first glimpse of duct tape in one of the wind tunnel shots.

Fat Charlie 06-01-2020 10:10 PM

It's hard to make fake claims about a shape you intend to produce. At least, if you don't want the inevitable backlash to overshadow what you actually did accomplish.

I'm a fan.

freebeard 06-02-2020 12:19 AM

All these 0.20-1 cars have the top-side sorted. Maybe the aerodynamic gains aren't in the back half but in the bottom half?

edit:
Quote:

Originally Posted by Batman Jr
I liked it from the first glimpse of duct tape in one of the wind tunnel shots.

For me it was at https://youtu.be/KNPdPOTTTWk?t=7 in the 2nd video, with the ornithopter windmill.

JulianEdgar 06-02-2020 01:23 AM

Quote:

Originally Posted by Fat Charlie (Post 625548)
It's hard to make fake claims about a shape you intend to produce. At least, if you don't want the inevitable backlash to overshadow what you actually did accomplish.

I'm a fan.

Actually I understand that a *lot* of cars don't match their claimed Cd values when tested in other manufacturer's wind tunnels. If it ever gets to production (doubtful), this one will likely be the same.

serialk11r 06-02-2020 01:59 AM

I vaguely recall reading about independent tests when MB released the CLA (claimed 0.22), and it seemed like their numbers were something like 10% lower than what the wind tunnel showed.

That means someone has a measurement issue because driving the car in still air is going to produce a consistent amount of drag. However it seems like it would definitely be within 15%.

I can easily believe 0.16 (that's adding 10%) being possible with that shape. The XL1 is 0.159 without a full tail as well. Mercedes has gotten their minivans close to a Prius in Cd, so maybe there's a way to manage the drag there more effectively than most other OEMs have done.

Sending air under, instead of down the sides of the cars where the wheels will interfere is probably very useful. The Alfa Romeo BAT concept had (probably) poorer management of airflow around the tires, but with a bit more tail it got below 0.2.

NeilBlanchard 06-02-2020 02:03 PM

Quote:

Originally Posted by serialk11r (Post 625498)
I'm guessing 0.146 goes up by some when you put cooling radiators in.

Maybe it's electric?

serialk11r 06-02-2020 03:28 PM

Quote:

Originally Posted by NeilBlanchard (Post 625593)
Maybe it's electric?

Electric cars need radiators for the ~15% waste heat they need to reject, and the air conditioner :)

A concept doesn't, since it is just going to roll on stage and off.


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