Jet Pack - Compressed air?

[joeranger]

Hey guys,
I have had a display only jetpack idea for a few years using estes rockets. I am going to a kid halloween party on Sat, and rockets are...a bad idea.

I am too tired to post more details now, but I plan on using compressed air from cans of dust-off and baby powder.

Has anyone done a display jet pack? Push a button and get noise and smoke?

 

[joeranger]

OK, here is my thought. Modify my Felix/redbull costume to add a "T" section of pluming pipe sealed at the bottom with the vertical tube filled with some kind of powder. Compressed air will blow the powder out of the two downward pointing nozzles, creating the illusion of a jet.

 

[markkNL]

I would not use any powder for this, that is going to give a gigantic mess. Better off using some kind of adiabatic process (which would mean something like a CO2 fire extinguisher) or a smoke machine.

 

[dropshipbob]

I agree Joe, using any kind of powder would leave a big mess...and it would probably only work for a second of so. I'd suggest dry ice for the "smoke" and compressed air for the "spray" effect. But then I wonder, would there be any concerns about getting a blast of dry-ice in someone's eyes? A little kid might be right about eye level with the nozzles.

My son has a Thomas the train engine toy that, when you poured purified water into the smoke stack, it would make little puffs of smoke as it went along. This toy is much too small for an application such as yours, but if you could figure a way to enlarge the mechanics behind it?

 

[Bruce Wayne]

Some ghostbusters cosplayers use a modified ecig to vent their packs. I tried it for my Boba Fett rig and it just didn't produce the output I wanted. I'll be going to a CO2 tank and rated solenoid valve when I decide to drop the cash.

 

[joeranger]

I bet there is a way to rig a 2 liter pop bottle with a mento

 

[nightowl12020]

If you just turn the can of compressed air upside down, it comes out as a vapor. It dissipates quickly, no mess and non toxic. Of course it also looks cool. I've rigged one in my Rocketeer pack through some tubing into a nozzle I made out of a couple of small plastic bottles in my scrap box. I just haven't worked out a good way to trigger it yet and just have a line that pulls the trigger on the can.