Don't laugh. I want to build a jet pack

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Zippiot
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re: Don't laugh. I want to build a jet pack

Post by Zippiot » Tue May 09, 2006 2:58 am

It would also need a retractable tail, and some way of steering it while keeping the person aerodynamic.

Lockwood made a hovering platform using pj's right?
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marksteamnz
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Re: re: Don't laugh. I want to build a jet pack

Post by marksteamnz » Tue May 09, 2006 7:33 am

Sigh What a twerp reinventing the wheel.
After the Bell rocket belt next came the jet belt 30 minute endurance used a Williams Jet engine
http://en.wikipedia.org/wiki/Jet_pack#T ... ng_Belt.29

El-Kablooey wrote:
Lugebob wrote:Check this guy out. The picture is cropped on his new site, but he is using 8 AMT turbines........ or trying to. He used to post updates (lack of success) before he went to a flash site... He was selling naming rights for $10K on Ebay for a while (no takers) He has basically been amusement for the Jet Guys at RCU. and me to...

http://www.skywalkerjets.com/


Bob
www.jetluge.net

The guy ay skywalkerjets.com has posted a test video from 4-6-06. Check it out, it isn't a pretty flight or anything, but it does lift his weight. He may just pull it off someday.
Cheers
Mark Stacey
www.cncprototyping.co.nz

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Re: re: Don't laugh. I want to build a jet pack

Post by Johansson » Tue May 09, 2006 7:42 am

El-Kablooey wrote:The guy ay skywalkerjets.com has posted a test video from 4-6-06. Check it out, it isn't a pretty flight or anything, but it does lift his weight. He may just pull it off someday.
Heck, it might just get him airborne soon. I have looked at that website earlier before the video was there and the first thing that came through my mind was the cost of the engines, 8 big RC-turbines with ECU and starter must be extremely expensive. Just imagine changing 16 cheramic ball bearings after a few hours of running time...

From a pilot safety point of view multiple engines must be better than one or two bigger engines, if one engine stopped for some reason it would still be possible to do a quick landing.

If I had the money and the balls I would get a Garrett JFS 100 and if needed rebuild the lubrication so it could be mounted vertically, then use it for powering a fan just like the German guy did. Personally I would never trust a home-built engine when it comes to get airborne...

//Anders

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re: Don't laugh. I want to build a jet pack

Post by Bruno Ogorelec » Tue May 09, 2006 10:28 am

I liked the PopSci article on that Mexican guy. Fair, not gushing, not condescending; just about right.

Hasn't made me a convert to peroxide rockets, but it is very interesting nonetheless.

To my mind, jet power will prove more practical than rocket power. Though, using the word 'practical' in this context stretches the meaning a bit too much.

I think I'll stick to the gyrocopter concept for the moment.

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re: Don't laugh. I want to build a jet pack

Post by bob000555 » Wed May 10, 2006 1:13 am

for the heat sheld u should use aerogel this stuff would be perfict...only prob is its hard to get big chunks of it...glue some small chucks together with silaca glue
http://www.unitednuclear.com/aerogel.htm
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re: Don't laugh. I want to build a jet pack

Post by Jim Berquist » Tue May 23, 2006 2:23 am

The only functional units I know are Nitros based....Could be wrong thats all I know...Cold to start and lots of steam...All anyone has been able to acomplish is about 2 minutes You will find all you need in this forum...

Jim :?
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Re: re: Don't laugh. I want to build a jet pack

Post by marksteamnz » Tue May 23, 2006 2:36 am

berquistj@peoplepc.com wrote:The only functional units I know are Nitros based....Could be wrong thats all I know...Cold to start and lots of steam...All anyone has been able to acomplish is about 2 minutes You will find all you need in this forum...

Jim :?
Huh? Jim did you not bother to read any of the posts in this thread?

The units are either H2O2 hydrogen peroxide rocket packs or a fan turbine Jet pack

http://en.wikipedia.org/wiki/Jet_pack#T ... ng_Belt.29
Link repeated from my earlier post.
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Mark Stacey
www.cncprototyping.co.nz

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re: Don't laugh. I want to build a jet pack

Post by Zippiot » Tue May 23, 2006 5:20 am

What are some powerful monopropellants (liquid) that would suit a jetpack...actually a monopropellant would make it a rocketpack huh?
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Re: re: Don't laugh. I want to build a jet pack

Post by El-Kablooey » Tue May 23, 2006 6:25 am

Zippiot wrote:What are some powerful monopropellants (liquid) that would suit a jetpack...actually a monopropellant would make it a rocketpack huh?

or a bomb
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Re: re: Don't laugh. I want to build a jet pack

Post by tufty » Tue May 23, 2006 7:21 am

Zippiot wrote:What are some powerful monopropellants (liquid) that would suit a jetpack...actually a monopropellant would make it a rocketpack huh?
Generally hydrazine.

The first few hits here will tell you more than you want to know about monopropellants. Honestly, if I were you, I'd suggest concentrating on not blowing your hands off with home-made solid fuel rocket motors before you even start thinking about playing with stuff like hydrazine.

Simon

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re: Don't laugh. I want to build a jet pack

Post by El-Kablooey » Tue May 23, 2006 9:33 am

HAHAHA!! I love that redirect page!
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Zippiot
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re: Don't laugh. I want to build a jet pack

Post by Zippiot » Tue May 23, 2006 9:39 am

Nice :)

I dont play with bombs as hard as that is to believe, I need my hands for xbox!

A google of monopropellants doesn't reveal much, just a bunch on h2o2 and n2h4 and bomb is a good enough description for me
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Re: re: Don't laugh. I want to build a jet pack

Post by tufty » Tue May 23, 2006 10:58 am

Zippiot wrote:A google of monopropellants doesn't reveal much, just a bunch on h2o2 and n2h4 and bomb is a good enough description for me
Oh that's sure. Generally speaking, the only really viable monopropellants are hydrazine and hydrogen peroxide, which is why that's all googling pulls up.

"Bomb" is a pretty good description of what you're making with either of them.

Here's some hydrazine information: http://www.inchem.org/documents/icsc/icsc/eics0281.htm

And ditto for hydrogen peroxide (only 60% solution, you'd need 90% or better to make a feasible rocket, IIRC):
http://www.inchem.org/documents/icsc/icsc/eics0164.htm

I wouldn't particularly want to play with either, to be honest. Highly toxic and highly volatile. Extreme kudos to the Me163 pilots who flew around, with people shooting at them, in close proximity to pressurised tanks of at least hydrogen peroxide, and in later models, hydrazine / methanol mix as well.

Simon

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re: Don't laugh. I want to build a jet pack

Post by Jim Berquist » Fri May 26, 2006 12:54 am

Markstreamnz:

Your right.....I was wrong.....

I'm working 60 hour weeks and it's paying it tole..

Peroxide it is. Hummmmm! Nitrated Nitros , May have something there.

Just look at it and Away You Go!!!!

Some place on the forum there is a man, I think in mexico or south America that has spent years coming up with one and last I heard still working on it ....Mostly learning how to fly the thing. He has a working product......
WHAT TO FRAP, IT WORKED![url=callto://james.a.berquist]Image[/url]

NickC
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re: Don't laugh. I want to build a jet pack

Post by NickC » Sat May 27, 2006 3:19 am

I bet if you had 2 big augmented effecient valveless pulsejets you could get lift off.

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