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Pocket Vortex (Football)
Posted: Thu Aug 09, 2007 11:58 am
by Mishkan
Anyone know the drag coefficient or close to it of a pocket vortex right off hand?
Posted: Thu Aug 09, 2007 12:00 pm
by noname
The Pocket Vortex was a gun, and it wouldn't have a drag coefficient unless you were planning on using it as ammo.
Maybe I'm a dumbass, that's probably it. When I saw Pocket Vortex I thought you were talking about the strafer, not those little nerf footballs.
Posted: Thu Aug 09, 2007 1:16 pm
by Mishkan
Talking about the footballs
Posted: Thu Aug 09, 2007 5:58 pm
by boilingleadbath
"Low".
I don't know of any wind tunnel tests involving vortex football-things, but I have seen a test that pegged a football at a Cd of about .22, in the turbulent regime (our situation).
Add a bit of drag to account for the fins, and we might consider a Cd of .25 - .3
On the other hand, I've seen far lower amounts of drag reported for a football shape... I think as low as .15.