Tesla robo taxi drag?

[Vekke]

Rough dimensions of the car scaled from picture in 3d so might not be 100% accurate:

Length 4215mm
Width 1690mm max at front axle. From better picture got 1640mm. Tapers to 1190mm at the rear corners
height 1406mm
Axle distance 2670mm
Ground clearance 144mm

Those wheelcovers are oversize and they are more oversized in front 95mm than in the back 77mm.

Edit measured frontal area to be 2,0m2. Still a rough estimate but should be in the ballpark.

CdA=0,20x2,0=0,40 which is around same as GM EV1

[ennored]

The four seat version looks an awful lot like two Robtaxis operating nose to tail....

[freebeard]

...The four seat version...

?????

I think my favorite thing about the Robov'n is the doors -- double pocket sliding doors that only open halfway.


https://www.yahoo.com/tech/tesla-rob...095024936.html

That and the fact that it lays frame. I am curious about the sightlines from the interior.

[freebeard]

https://insideevs.com/news/736937/te...-bus-revealed/

This video speculates that the Robov'n might sell for $50,000. Useful for delivery vans, campers, & etc: Genius move that no one realised - Tesla changed the game completely!

[aerohead]

Seems reasonable. The mirror delete might mean a delta- Cd 0.010.
High-speed testing of aero wheels in Germany gave a 3.5% delta drag. The wheels shown would have no ventilation drag at all, compared to Tesla aero wheels.
The underbody appears to be nearly, fully-inclined, creating a 'diffuser' which begins at the front axles.
I'm gonna see if the graphic artist I know can print me off the side elevation view for dimensional analysis.
We have no plan-view, so I'm clueless as to camber and any boat-tailing that Franz may have penned.
Ford Motor Company bought a controlling interest in Red Bull Racing's Formula-One, in order to get access to Adrian Newey's aerodynamics. If he can shave some drag off Ford's passenger cars, they'll run smaller ( cheaper ) battery packs, hit their range target, and come in at lower cost, higher profit/unit. Something Franz Von Holzhausen could also be doing for Musk.

[aerohead]

The 'robo-van' is similar to Westinghouse's Cd 0.08, self-powered, passenger railcar of 1931, by Tietgens & Ripley. All it would need is to add the 'nose' to the tail, for a 'double-ended' vehicle, then drop it 'into the weeds'; like Japan Rail Lines does with their Shinkansen.

[freebeard]

Westinghouse's Cd 0.08, self-powered, passenger railcar of 1931

Reference image? I've seen suggestion of a New York Central Art Deco locomotive.


https://i.ebayimg.com/images/g/MFsAA...a2/s-l1600.jpg

I think the Robov'n (Elon's pronunciation) is the hidden gem. Similar to the way the Falcon Heavy launch of the Europa Clipper was eclipsed by other events.

I will never look at the city bus's doors in the same way again.

[aerohead]

https://www.alamy.com/english-postca...a&searchtype=0

Originally Posted by freebeard

Reference image? I've seen suggestion of a New York Central Art Deco locomotive.


https://i.ebayimg.com/images/g/MFsAA...a2/s-l1600.jpg

I think the Robov'n (Elon's pronunciation) is the hidden gem. Similar to the way the Falcon Heavy launch of the Europa Clipper was eclipsed by other events.

I will never look at the city bus's doors in the same way again.

Sighard Hoerner's 1951 'AERODYNAMIC DRAG' may be the sole source for an image, which I lost in the PHOTO BUCKET highjack for ransom scheme.
If you can find a photo of the Goodyear-Zeppellin Corporation's railroad train from pre-WW-II, and isolate the 'engine', and 'double-end' it, you'll have a sense of what Tietgens and Ripley did for WESTINGHOUSE.
In 1986, Dr. Wolf-Heinrich Hucho mentioned that Cd 0.07 was 'technically feasible' for ground vehicles, so T&R's railcar's Cd 0.08 is within bounds of 'reason.'
There is motion picture footage of streamline trains like the ' Yankee Clipper' online where you can directly see their fully-streamlined underbodies, and 'wheel integration', something probably not lost on T & R.
Living in a 'Faraday Cage' means I can barely get a phone signal. Which means I can't have home internet. Which means I can't use my home computer. Making it difficult to 'learn' and 'share.'

[freebeard]

My Faraday cage has a land line.

[Piotrsko]

[/QUOTE]
Living in a 'Faraday Cage' means I can barely get a phone signal. Which means I can't have home internet. Which means I can't use my home computer. Making it difficult to 'learn' and 'share.'[/QUOTE]

Ever think about locating near windows or "repeater antennas"? The latter could be a couple pieces of rebar. Or better yet 1/2 inch copper pipe couple wavelengths hung under the floor. Could even be on the dirt if insulated.

If you really want to go overboard, a uhf yagi, TV amplifier and a dipole of the correct wavelength. There's also cantennas but that is getting a wee bit overboard.