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A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.

water cooler bottle launcher

Discussion about Compressors, hose, pipes, fittings, launchers, release mechanisms, and launch tubes.
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Brian
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water cooler bottle launcher

Post by Brian » Wed Sep 17, 2008 6:28 pm

last night my dad brang home an 11L water cooler bottle and im wondering what launcher could launch this large nozzle bottle.


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Tim Chen
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Re: water cooler bottle launcher

Post by Tim Chen » Thu Sep 18, 2008 8:31 am

Brian wrote:last night my dad brang home an 11L water cooler bottle and im wondering what launcher could launch this large nozzle bottle.
I think you would need a large rubber stopper with a hole in the middle to feed in the air and a supersized cable tie mechanism to hold it down. There's a lip around the neck of the big water jugs I looked at which would be a good place to grab on with cable ties.


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Re: water cooler bottle launcher

Post by Cloud Dancers » Sat Sep 20, 2008 1:09 pm

Tim Chen wrote:
Brian wrote:last night my dad brang home an 11L water cooler bottle and im wondering what launcher could launch this large nozzle bottle.
I think you would need a large rubber stopper with a hole in the middle to feed in the air and a supersized cable tie mechanism to hold it down. There's a lip around the neck of the big water jugs I looked at which would be a good place to grab on with cable ties.
I agree that a cable tie launcher would be best to launch a water cooler bottle. Be careful though they do not hold as much pressure as a soda bottle. I saw on Mythbusters that they could explode one of these with only 90PSI.. Looks good for lifting heavy payloads or a 1st stage though.


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Re: water cooler bottle launcher

Post by dongfang » Mon Sep 22, 2008 6:33 pm

Hi,

Yeah they could make a great mega-booster! But they are not made for pressure, like the carbonated drink bottles are (they are designed strong enough not to explode even if you drop them).

My first idea was a plywood thing to reinforce the flat (=weak) bottom of them. See the drawing. Maybe with more than just the 2 vertical sheets on the drawing. You could even have a staging mechanism on top (and separate inflation? Then you could take both stages to their limit, even when the limits of each are different!).

There is a video on YouTube of someone testing a water rocket made of these tanks. It exploded ... (see if you can find out where it burst? Ask the poster for the original movie, with full resolution and all frames intact?)

Regards
Soren



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Re: water cooler bottle launcher

Post by dongfang » Mon Sep 22, 2008 6:35 pm

Oops I forgot the drawing:
You do not have the required permissions to view the files attached to this post.



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Re: water cooler bottle launcher

Post by Cloud Dancers » Tue Sep 23, 2008 12:17 pm

dongfang wrote:Hi,

Yeah they could make a great mega-booster! But they are not made for pressure, like the carbonated drink bottles are (they are designed strong enough not to explode even if you drop them).

My first idea was a plywood thing to reinforce the flat (=weak) bottom of them. See the drawing. Maybe with more than just the 2 vertical sheets on the drawing. You could even have a staging mechanism on top (and separate inflation? Then you could take both stages to their limit, even when the limits of each are different!).

There is a video on YouTube of someone testing a water rocket made of these tanks. It exploded ... (see if you can find out where it burst? Ask the poster for the original movie, with full resolution and all frames intact?)

Regards
Soren
Won't that add too much weight? I think that the perfomance of this (even with a lower pressure make these more sutible to use as boosters. There is a lot of volume in those and a large nozzle which is perfect for lifting a fully loaded second stage. I think I remember seeing a video somewhere where someone launched a pumpkin 200 feet with one of those.


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Graveyard
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Re: water cooler bottle launcher

Post by Graveyard » Tue Sep 23, 2008 6:39 pm

Yes, I saw the pumpkin launch some time back...amazing that it lifted off so nice!



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Tim Chen
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Re: water cooler bottle launcher

Post by Tim Chen » Wed Sep 24, 2008 11:28 am

Graveyard wrote:Yes, I saw the pumpkin launch some time back...amazing that it lifted off so nice!
There's a video of it and it's really neat to see the way the bottle swells up and deforms as the pressure tries to push the heavy pumpkin off the ground.


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Re: water cooler bottle launcher

Post by team-helder » Tue Apr 21, 2009 1:13 pm

lol


water rockets are fun what i mean with fun wen u put some foam in it and let ur dad leanch it right next to it !

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Re: water cooler bottle launcher

Post by ferlyn388 » Sat Nov 21, 2009 5:00 am

I think that bottle launcher looks like it would be lots of fun to use. It is simple to build and is sure to be lots of fun until someone loses an eye. Nice water cooler bottle launcher, right?



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Re: water cooler bottle launcher

Post by U.S. Water Rockets1 » Sun Nov 22, 2009 12:39 am

ferlyn388 wrote:I think that bottle launcher looks like it would be lots of fun to use. It is simple to build and is sure to be lots of fun until someone loses an eye. Nice water cooler bottle launcher, right?


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