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Cd 10-11-2014 10:24 AM

Indy car aero - race upside down ?
 
Here is another video I found interesting from the A2 wind tunnel which confirms the 'myth' of an Indy car having enough downforce to race upside down.
It's not really related to fuel economy, so i posted it here. I thought you all might enjoy it though .
https://www.youtube.com/watch?v=Hqw0r0kYl0M

gone-ot 10-11-2014 12:44 PM

Wonder at what speed the down (up) force become enough to stick the model to the foof?

dirtydave 10-11-2014 12:57 PM

It really is amazing how much of an impact the air has on vehicles.

Xist 10-11-2014 12:58 PM

Quote:

Originally Posted by Old Tele man (Post 449914)
Wonder at what speed the down (up) force become enough to stick the model to the foof?

They certainly could not start the race upside down! :)

Baltothewolf 10-12-2014 09:40 AM

Well enough lift can carry 300 tons of metal in the air, it's logical that enough down force can keep an object on the floor upside down. Exact opposite of an airplane hue.

jakobnev 10-12-2014 12:47 PM

Races would be much more exiting if the courses had upside down sections.

Xist 10-12-2014 09:21 PM

Quote:

Originally Posted by jakobnev (Post 450035)
Races would be much more exiting if the courses had upside down sections.

and jumps! :)

Well, intentional and properly-designed ones, not accidental ones into the crowds... Let's definitely avoid those!

user removed 10-12-2014 09:54 PM

Indy cars hit 4 Gs in the turns which takes a heck of a lot of downforce. Not sure at what speed they could actually be inverted and still maintain enough traction for sustained velocity, probably somewhere near 75% of max speed.

regards
mech


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