The most aerodynamic shape possible

[gone-ot]

The "most aerodynamic" shape possible? A very long, thin PIN!

[drmiller100]

Originally Posted by Old Tele man

The "most aerodynamic" shape possible? A very long, thin PIN!

with the pointy end towards the back!

[RiderofBikes]

Could Vortex Generators (or similar technology) have potential use in this regard? Theoretically have a positive affect with a shortened body of a vehicle. If properly placed, assisting with continued attached airflow past the "ideal" distance/degree of tapper.

Of course, not to the extreme point of Reducing Drag, but to keep an identical/matching Cd value below the stated ratios, compared to its longer more ideal form?

[basjoos]

Originally Posted by Old Tele man

The "most aerodynamic" shape possible? A very long, thin PIN!

But then when you shorten the cylinder portion of the pin to reduce the amount of skin drag, guess what you end up with? A very tiny teardrop.

[gone-ot]

...get the L/D-ratio huge enough and the teardrop shape goes away.

[Varn]

Does the template assume that the air flow will be in line with the vehicle direction. No?

Do they take in consideration the amount of ambient wind? It is common to experience a 20 mph wind. Sometimes cross.

A shorter vehicle might prove to have less drag in a cross wind.

[bandit86]

If lowering a vehicle gets t close to that half blimp shape, what about raising it? It would be closer to the real blimp

[euromodder]

Originally Posted by bandit86

If lowering a vehicle gets t close to that half blimp shape, what about raising it? It would be closer to the real blimp

It'd need to be too high off the ground to be practical - it'd still need wheels and the ability to turn without toppling.

[kach22i]

Originally Posted by euromodder

It'd need to be too high off the ground to be practical - it'd still need wheels and the ability to turn without toppling.

I think at one point they had the Aptera high for a lower Cd number, but then lowered it for better handling. I cannot seem to find the photo with the two versions next to each other.

EDIT: Found it in one of Neil's old posts.

http://ecomodder.com/forum/showthrea...p-1h-5671.html

Originally Posted by NeilBlanchard

Hi,

The production version of the Aptera Typ-1e (and the Typ-1h) is due to be revealed very soon, and as so far we know that they are adding outside mirrors (to comply with the letter of California laws), though the cameras may still be an option. They are adding rear quarter windows, and part of the lower rear of the door windows are operable. The revised Cd is reported to be 0.15.

They have lowered the whole vehicle by ~4 1/2 inches, and the front wheels are move further back -- these changes will stabilize it, and make it much harder to rollover.

It is also possible that it is now front wheel drive: the element in the middle on the front suspension sure looks like it is a drive shaft:



Here's a comparison of the Mk-1 (below) and the production version (MK-2? above) with the outline of the old overlayed on the new version.

[ecomodded]

The bullet, could be the most aerodynamic shape.
With bullet shaped wheel covers a projectile shaped car could drive.