this is the site i am using http://www.all-science-fair-projects.com/science_fair_projects/89/835/aed978aabe49b8ac1a6197cc407cc6d7.html
2007-02-02 15:06:28 · 6 answers · asked by Seth S 2 in Science & Mathematics ➔ Engineering
Get a 5 gallon trash bag, deflate it, and tape it behind the fan. Get a stopwatch too. Turn the fan on, start the stopwatch, and see how long it takes the bag to fill. 5gallons / that time gives you the air it moves per unit time.
To calculate that pressure you figure out your hovercraft's volume (with you in it if you're driving in it). Then you figure out how much air weighs in that volume. If your hovercraft is viable, the air will weigh more. Then you subtract the 2. The difference is the maximum weight of the air that can be in the rigid structure. From that you can calculate its pressure using PV=nRT.
2007-02-05 00:11:46 · answer #1 · answered by Qing Z 2 · 0⤊ 0⤋
How big a project would you like to make? You could take two or three old computer fans and rig a very small hovercraft that will have enough lift to show the principles needed or you can tear down a lawn mower or two and build one that will lift an adult up.
I hope these links help you out and provide the answers you need.
2007-02-02 15:25:57 · answer #2 · answered by georgd58 2 · 1⤊ 0⤋
Have you checked the mythbusters website? They did an episode where they built hovercraft vehicles. There was a detailed discussion about the blower strenght required for each one.
http://dsc.discovery.com/fansites/mythbusters/mythbusters.html
2007-02-02 15:16:46 · answer #3 · answered by fdm215 7 · 0⤊ 0⤋
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2016-12-03 09:29:08 · answer #4 · answered by Erika 4 · 0⤊ 0⤋
I made a hovercraft using a motor from a shop vac, and it worked.
2007-02-02 15:11:03 · answer #5 · answered by Dennis H 4 · 0⤊ 0⤋
It should be "Jenna Jamison" powerful!
That's a big time blower!
2007-02-02 15:09:24 · answer #6 · answered by Anonymous · 0⤊ 2⤋