Satan's Streamliner

[Sven7]

Similar, but with strange winglets.


Mercedes-Benz Weltrekordwagen T 80 silver 1939 vl2 by stkone, on Flickr

I remember someone saying that the aero template we use will work up to 250 or so mph. Out of curiosity, how does it change when a car goes, say, 300 or 400 mph?

[kach22i]

Originally Posted by Sven7

(It's also interesting to note that this is very different from Jaray's approach to streamlining)(

This was the point of my 2-Point design which matured into a 5-Point design.

It's fine and dandy to develop a 1-Point design, but if wheels and people cannot fit into it, then what good is it?

By taking each of the major elements, the 4-wheels (+4) and the passenger/driver canopy (the +1) and optimizing those for aerodynamics we arrive at a more practical 5-Point solution.

In practice this approach shows up as salt flat racers and several LeMans type race cars.

[aerohead]

Originally Posted by LeanBurn

I never found what the Cd of that car was...does anyone know?

I have no published number for the car.
Korff penned a similar Bonneville racer in 1962 which had less of a tail,no wheel fairings,but plan taper.He assigned Cd 0.16 to it.
Mickey Thompson's Challenger I is reported at Cd 0.16.
I would guestimate the 666 at around Cd 0.15 because of the care they spent on the wheels.If she had the plan taper she'd be knocking on the door of Cd 0.11 or so.
The 1957 MG EX 181 with plan taper is reported at Cd 0.12 and it did not have the wheels as well cleaned up as Satan's swoopy salt blaster.

[JackMcCornack]

Originally Posted by NeilBlanchard

It would be devilish to drive -- there is almost no way to see out? Obviously only meant for the salt flats.

Gosh, Neil, ya think? Along with the limited visibility, there are other clues indicating that it's a single-purpose car. For example, there's no rear license plate...and a good thing there isn't, since a license plate would probably increase drag by 40%.

[jamesqf]

Originally Posted by JackMcCornack

..and a good thing there isn't, since a license plate would probably increase drag by 40%.

Just thinking, what with modern technology and all, do you suppose you could put the license plate flat to the body (perhaps covered with a clear fairing), and project a holograph of it to be visible from the rear?

[aerohead]

Originally Posted by Sven7

Similar, but with strange winglets.


Mercedes-Benz Weltrekordwagen T 80 silver 1939 vl2 by stkone, on Flickr

I remember someone saying that the aero template we use will work up to 250 or so mph. Out of curiosity, how does it change when a car goes, say, 300 or 400 mph?

For a vehicle in ground proximity at 250 mph up to local Mach-1,'transonic' flow begins,where compressibility affects of the air and supervelocities caused by the vehicles own acceleration of the flow field around the body can conceivably produce local supersonic shockwaves.
Since subsonic drag is governed by separation and wake drag and supersonic drag is governed by shockwaves created at the nose,it becomes necessary to allow for a more ogival nose to mitigate any shockwaves .
So,for racing and unlimited-speed sections of the Auto Strada and Autobahn,the more 'pointed' nose is required.
Early supersonic LSR vehicles were designed with v-bottoms which would allow the shockwaves reflected from the ground to pass by the body vertically,essentially making the bottom a 'nose.'