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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.

Cheezy Water Rocket Toy with Potential

Discussions about rockets, construction materials, adhesives, nozzles, nosecones and fin design.
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bugwubber
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Re: Cheezy Water Rocket Toy with Potential

Post by bugwubber » Tue Jun 30, 2015 11:55 am

anoymous wrote:How many launches have you used the battery? With us, after four or five launches the battery was low. We never had an error because of that, tough.
Battery level was unknown. It was unable to reset the servo so I imagine it was flat.


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Re: Cheezy Water Rocket Toy with Potential

Post by bugwubber » Tue Jun 30, 2015 12:28 pm

Ready to go again!
IMG_20150630_112317.jpg
So anyone else built one yet? These things are fun!
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Re: Cheezy Water Rocket Toy with Potential

Post by anoymous » Tue Jun 30, 2015 1:30 pm

well, I didn't build it yet, but if I find the parts and have time this summer, I'll try to make some different rockets. Sadly, I don't think I will have enough time: first we go two weeks to France, then I have some time, and in August I need to do a hollyday job. In september I have to get ready for the schoolyear. :(


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Re: Cheezy Water Rocket Toy with Potential

Post by bugwubber » Tue Jun 30, 2015 11:01 pm

Yep just plugged the altimeter Launchpad into a different servo and power supply and it worked like a champ. Wish I'd thought to just switch out batteries at the field...


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Re: Cheezy Water Rocket Toy with Potential

Post by anoymous » Wed Jul 01, 2015 1:50 am

One of the things I learnt with our research competences: always have spare parts when you are in the field. It's unbelievable how much time we lost because we didn't have spare parts. And if something goes wrong, try changing the battery before you do something else :D.


"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former."
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Sorry for malconstructions in my sentences, I am Belgian. And I was never good at making easy sentences.

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Re: Cheezy Water Rocket Toy with Potential

Post by U.S. Water Rockets » Sat Jul 04, 2015 11:27 am

bugwubber wrote:Here is the new upperstage. The rocket has been named Paso Doble
IMG_20150622_215834.jpg
That looks really good! It looks like a rocket from one of those 1950's science fiction movies!



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Re: Cheezy Water Rocket Toy with Potential

Post by U.S. Water Rockets » Sat Jul 04, 2015 11:31 am

bugwubber wrote:We have success!

And I have no idea where the upper stage is!

We had a false launch detect and then the alTImeter reported an error condition and wouldn't reset. So we launched with just the bare upper with no parachute, no beeping launchpad, and no blinking lights.
Did you get the altimeter wet? That kind of error usually happens when the altimeter gets wet. A low battery can cause this situation as well.



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Re: Cheezy Water Rocket Toy with Potential

Post by bugwubber » Sat Jul 04, 2015 4:44 pm

U.S. Water Rockets wrote:
bugwubber wrote:We have success!

And I have no idea where the upper stage is!

We had a false launch detect and then the alTImeter reported an error condition and wouldn't reset. So we launched with just the bare upper with no parachute, no beeping launchpad, and no blinking lights.
Did you get the altimeter wet? That kind of error usually happens when the altimeter gets wet. A low battery can cause this situation as well.
Definitely a low battery. Well pretty sure since it couldn't move the servo back to start position. Upper stage cargo bay was assembled after the pressure vessel had be loaded so no chance of it getting wet.


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Re: Cheezy Water Rocket Toy with Potential

Post by bugwubber » Sat Jul 04, 2015 4:47 pm

U.S. Water Rockets wrote:
bugwubber wrote:Here is the new upperstage. The rocket has been named Paso Doble
IMG_20150622_215834.jpg
That looks really good! It looks like a rocket from one of those 1950's science fiction movies!
Thanks! Guess I get to build it again. :-)


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Re: Cheezy Water Rocket Toy with Potential

Post by U.S. Water Rockets » Tue Jul 07, 2015 10:03 am

bugwubber wrote:
U.S. Water Rockets wrote:
bugwubber wrote:Here is the new upperstage. The rocket has been named Paso Doble
IMG_20150622_215834.jpg
That looks really good! It looks like a rocket from one of those 1950's science fiction movies!
Thanks! Guess I get to build it again. :-)
This time put your name and email or phone number on it. We lost one in 2004 and never got it back. It likely landed in someone's back yard or on a roof and they found it some time later and had no clue where it came from. We put our contact info on it and even a reward notice ever since.



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Re: Cheezy Water Rocket Toy with Potential

Post by bugwubber » Wed Jul 22, 2015 8:58 am

Another launch!
This time the drag shroud stuck perhaps on tape on the upper stage? Not sure.
Anyway, something happened that it never dropped so second stage didn't launch. It depressurized before impact through the tiny hole.


Regardless, the lower stage was unharmed and is ready to launch again. The upper was a quick build and made a good cushion. ;-)
DSC03321.JPG
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Re: Cheezy Water Rocket Toy with Potential

Post by U.S. Water Rockets » Wed Jul 29, 2015 12:03 am

Too bad it failed to separate.



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Re: Cheezy Water Rocket Toy with Potential

Post by bugwubber » Fri Jul 31, 2015 1:00 pm

Lesson learned- failure is always an option!


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Re: Cheezy Water Rocket Toy with Potential

Post by kitestring » Sat Dec 19, 2015 3:25 am

Here is the next stage i have managed based on all the threads...
Has anyone actually launched one yet?
[youtube][/youtube]
I have published a bit more info on my blog. http://waterrocketsbrisbane.blogspot.com.au/
Would love a reply even if you think its crap. Just like to know this thread is still live?



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Re: Cheezy Water Rocket Toy with Potential

Post by kitestring » Sat Dec 19, 2015 11:50 pm

Quick test in back yard to make sure mechanism works.... just at 30psi. Will be dropping non return valve and using simpler idea on next version. Merry Christmas and clear skies.
[youtube][/youtube]



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