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The Physics of Jetpacks?

by nst.john
Tags: jetpacks, physics
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nst.john
#1
Jun29-13, 07:14 PM
P: 112
I saw a working jetpack shown on a tv show on the science channel and it got me thinking how exactly we can make the perfect jetpack. I came up with an idea. AIR CONDITIONERS! Bear with me, just as how a tornado is a vortex of cold and warm winds and can have all that speed and strength, we can make our own vortex using air conditioner-like power sources, cooling the air and then coming out of a hole making a vortex, like smoke makes a vortex when hit out of a drum.
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Drakkith
#2
Jun29-13, 07:18 PM
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How's this vortex going to push you up?
nst.john
#3
Jun29-13, 07:22 PM
P: 112
The vortex will be shooting down first pushing you off the ground, then colliding with air molecules to keep you rising.

Drakkith
#4
Jun29-13, 07:28 PM
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The Physics of Jetpacks?

I'm not sure, but I think just shooting exhaust straight down is more efficient than trying to make a vortex. You're using up a lot of energy to make this vortex only to have most of its energy be in the direction of rotation and not pushing you anywhere.
nst.john
#5
Jun29-13, 08:13 PM
P: 112
That makes more sense.


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