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InvisibleEgo Death
Justadropofwaterinanendlesssea
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Registered: 04/27/03
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Attempting to design a jetpack...
    #3808085 - 02/20/05 08:42 PM (11 years, 9 months ago)

Every man has the right to take flight!

I am looking essentially for down force ideas.

I am thinking that compressed gas could be expelled constantly to maintain a hover motion. Larger/lesser quantities of gas could be expelled for up and down movement and the pipes could be re-directed for movement.

This is kind of like the jet pack in GTA: San Andreas or one alledgedly being tested by the US military.

Would it be possible scientifically speaking? Would an average size gas tank (gas presently unknown, helium?) be able to lift a human and the machine for a reasonable period of time? Could the gas be compressed as the machine flew? I don't know if a compressor could compress that fast!

Does anybody have any good ideas for a one-man flight device?

I don't really expect anyone to know answers to these questions but you may have some interesting thought on the idea!?


Edited by danoEoboy (02/20/05 09:36 PM)


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Offlinecb9fl
Senior ChildMolestationExpert
Registered: 06/12/03
Posts: 3,104
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Re: Attempting to design a jetpack... [Re: Ego Death]
    #3808232 - 02/20/05 09:21 PM (11 years, 9 months ago)

I think the longest sustained flight from a jet pack was under one minute.


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It is better to be hated for what you are than to be loved for what you are not. -Andre Gide

"Generosity is nothing else than a craze to possess. All which I abandon, all which I give, I enjoy in a higher manner through the fact that I give it away. To give is to enjoy possessively the object which one gives."


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Offlineintrigue
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Re: Attempting to design a jetpack... [Re: cb9fl]
    #3808468 - 02/20/05 10:13 PM (11 years, 9 months ago)

20 seconds

just watched a show on tlc


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OfflineZekebomb
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Registered: 08/24/03
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Re: Attempting to design a jetpack... [Re: intrigue]
    #3809221 - 02/21/05 01:52 AM (11 years, 9 months ago)

I always picture a guy on a jetpack flying around like a balloon when you let go of the neck... ouch.


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InvisibleMarioNett
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Registered: 07/22/03
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Re: Attempting to design a jetpack... [Re: Zekebomb]
    #3809294 - 02/21/05 02:16 AM (11 years, 9 months ago)

Quote:

I don't know if a compressor could compress that fast!




If it could, it would essentially be a propeller. In fact, that might be the way to go. I expect a personal helicopter would be quite a bit easier to create than a true jet pack.


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InvisibleDieCommie
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Registered: 12/11/03
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Re: Attempting to design a jetpack... [Re: MarioNett]
    #3809302 - 02/21/05 02:19 AM (11 years, 9 months ago)

There must be some way to defy gravity without gasses or air pressure.... but how? :shrug:


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OfflineTinTree
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Re: Attempting to design a jetpack... [Re: Ego Death]
    #3809556 - 02/21/05 03:49 AM (11 years, 9 months ago)

Definitely not helium, buddy. T'ain't flammable at all.


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"I'm afraid of losing my obscurity. Genuineness only thrives in the dark. Like celery."
- Aldous Huxley


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OfflineSeussA
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Re: Attempting to design a jetpack... [Re: TinTree]
    #3809871 - 02/21/05 08:45 AM (11 years, 9 months ago)

Most jet packs use highly concentrated hydrogen peroxide and a platinum (or silver?) sheet as a catalyst to produce thrust.

> Definitely not helium, buddy. T'ain't flammable at all.

Correct that it is not helium, but helium will 'burn' under intense heat and pressure. This is how the sun works.


--------------------
Just another spore in the wind.


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OfflineSeussA
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Re: Attempting to design a jetpack... [Re: Seuss]
    #3810666 - 02/21/05 01:28 PM (11 years, 9 months ago)

http://travel.howstuffworks.com/personal-jetpack1.htm

The second page talks about the h202 jetpack. Interesting stuff...


--------------------
Just another spore in the wind.


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InvisibleVvellum
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Registered: 05/24/04
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Re: Attempting to design a jetpack... [Re: Ego Death]
    #3810925 - 02/21/05 02:35 PM (11 years, 9 months ago)

there's a guy who owns/operates a jetpack. he gets paid bank to appear at football games and fly around.


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InvisibleEgo Death
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Re: Attempting to design a jetpack... [Re: Seuss]
    #3812675 - 02/21/05 07:50 PM (11 years, 9 months ago)

So the problem, with a rocket pack, is fuel consumption.

And the problem with propellors is instant death if the engine cuts out!!!

:crazy:


I spose I will have to stick with hangliders and microlights for now.


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OfflineElahrairah
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Re: Attempting to design a jetpack... [Re: Seuss]
    #3816669 - 02/22/05 02:02 PM (11 years, 9 months ago)

Quote:

Seuss said:
Correct that it is not helium, but helium will 'burn' under intense heat and pressure. This is how the sun works.




Are you suggesting he develop nuclear helium fusion? I'm pretty sure that even our sun is not hot enough for that. (many other stars are)


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All instances of FOAF in this post have been replaced by I and My for clarity of reading. No relation to the poster is meant or implied.


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Offlinecb9fl
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Re: Attempting to design a jetpack... [Re: Ego Death]
    #3816958 - 02/22/05 03:16 PM (11 years, 9 months ago)

Quote:

And the problem with propellors is instant death if the engine cuts out!!!




http://www.stluciahelicopters.com/faqs.htm

Q: I know airplanes can glide to the ground if they lose power, but helicopters scare me because they'll fall like a rock, right?
A: Not at all. Helicopters autorotate - similar to a winged seed pod falling from a tree. All helicopter pilots must regularily practice autorotations. A proper autorotation will touch lightly to the ground with little or no forward speed. An airplane can't do that. You would much rather be in a helicopter than a airplane if the engine failed.


--------------------
It is better to be hated for what you are than to be loved for what you are not. -Andre Gide

"Generosity is nothing else than a craze to possess. All which I abandon, all which I give, I enjoy in a higher manner through the fact that I give it away. To give is to enjoy possessively the object which one gives."


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OfflineBobcat420
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Re: Attempting to design a jetpack... [Re: cb9fl]
    #4448055 - 07/24/05 09:14 PM (11 years, 4 months ago)

What about magnetism? the entire planet has it's own electro-magnetic field. As we found out in what 4th grade science magnets can be used to push. So find a way to push against earth's magnetic field, I'm guessing it'd have to be an extremely minimal amount, then maybe use little thrusters like the gas ones to stabilize yourself from going in the wrong direction, creating a hovering motion, b/c as seen with magnets they go away then off to the side. Just a thought. Also people have electro-magnetic fields, let's hope it doesn't mess with that? haha.


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OfflineDongTrungHaThao
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Re: Attempting to design a jetpack... [Re: Seuss]
    #4448529 - 07/24/05 11:17 PM (11 years, 4 months ago)

Caution!

I have a friend whose brother holds (held? )the land speed record for a rocket powered bicycle, which he rode at a Swiss airfield. It was propelled by a hydrogen peroxide engine. They also built a rocket powered jetpack operating on the same principle ( of explosive decomposition of H2O2 by silver catalyst )to take off and land vertically, BUT.... they never tried it.... one accident could be fatal, or worse, result in quadriplegia and severe brain damage.
"We couldn't find anyone with enough balls to try it" was how he put it.

If you want to fly try paragliding, with proper instruction and equipment, it is much, much safer than skydiving, and lasts longer too. (I had my first flight just eight days ago - it was awesome - and the only sound was the wind!)

Excelsior!

Dong Trung Ha Thao


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