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Projectile Hang Times

All non-spudgun related discussion goes here such as projects, theories, serious questions, etc. All "off-topic" posts (aka useless posting, determined by moderators) will be removed.
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Unread postAuthor: schmanman » Mon Sep 11, 2006 7:47 pm

unless you took your cannon up in a skydiving plane, then went to the maximum altitude possible in that plane, then shot the gun straight up, and the projectile had a parachute. :roll: . no, I'm kidding, but gort, how do you figure these things out. I mean, I'm a freshman, and am in honors classes, and am taking geometry, so I'm not stupid, but how do you figure these things out?
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Unread postAuthor: boilingleadbath » Tue Sep 12, 2006 2:43 pm

10 minutes up then down = 5 minutes up.
5 minutes = 300 seconds
300 seconds * 32 f/s/s = 9,600 f/s
9,600/1100 = mach 8.7

That, unless I'm ignoring some possibility, is (roughly) the lowest velocity that can give you that hang time.
It assumes a drag-free projectile.

Or, at least, when using a dumb object.
Projectiles with lifting surfaces (wings) or parachutes are a different thing altogether.
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Unread postAuthor: sgort87 » Wed Sep 13, 2006 12:52 am

Yeah, what he said.

Thanks BLB, I really didn't feel like typing that stuff out. :P There's more that you should really show, but let's hope he accepts your explanation as it is.
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Unread postAuthor: brumby » Fri Oct 13, 2006 7:30 pm

sgort, how did you figure that out?... I would like to find out how fast my cannon shoots
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