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Science Lethal Water Gun, [engineering design]

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SUSslimey
post Mar 20 2010, 11:22 PM


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QUOTE(Polaris @ Mar 20 2010, 10:42 PM)
This is a topic that tests your grasp of several related disciplines,

Question:

Design a gun that has the same offensive capabilities of your regular field firearm, but instead of bullets, it uses water as ammo.

How do you propel water with the same destructive velocity of a bullet?
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just a cylinder containing water with a piston on one end and the other end built with weak material. behind the piston put some explosive and you are good to go. since water cannot be compressed it can penetrate any object as long as it has a high enough velocity.
the only problem is distance. since water changes its shape, it loses it's aerodynamic properties once it leaves the cylinder and accuracy and energy is rapidly lost.
SUSslimey
post Mar 20 2010, 11:52 PM


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QUOTE(NicJolin @ Mar 20 2010, 11:29 PM)
and it vaporize due to absorbing thermal energies from the explosion

Similar thing like you're trying to fire an ice bullet
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erm.....i lazy to draw....


difference with the ice bullet is complete separation with blast chamber by a piston and higher volume of water.

edit: pic removed due to noobness in drawing


This post has been edited by slimey: Mar 20 2010, 11:56 PM
SUSslimey
post Mar 21 2010, 02:51 PM


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maybe pykrete would work replacing a bullet in a normal gun
SUSslimey
post Mar 24 2010, 02:38 AM


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QUOTE(likkylooq @ Mar 24 2010, 02:14 AM)
issue is to leave no evidence such as yr dna/fingerprints behind? hmm..
who mentioned about leaving fingerprints or dna behind???
a person shot by a gun would leave behind a dead body with or without the bullet in it, plus bullet wound.

QUOTE
1. use water gun, but instead of normal water u use deadly poison which as soon as it touches the skin, dead!

hmm so far nothing that deadly to cause instant death.

QUOTE
2. use metal bullet. but instead of it going in a piece, make it :

2.1 so hot that it penetrate the skin
2.2 make it disperse .. but the bullet disperse as soon as it touches object..and the bullet better be sharp..
got it?
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isn't the purpose of bullet is to penetrate? how does temperature affect it? plus the bullet can still be traced back to the gun that fired it.


 

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