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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.


Hello Everyone. It is that time of year again. Time to approve changes to the competition rules for the new year.

You Can vote at:
viewtopic.php?f=32&p=19486#p19486

Please take the time to vote. TH:

ptx - 65m/213ft

Post your team or personal best. To be displayed on the WRA2 standings page(Altimeter Data and Videos are optional)
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ptx
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ptx - 65m/213ft

Post by ptx » Tue Sep 16, 2014 4:52 pm

First rocket with altimeter:

http://www.youtube.com/watch?v=8kArhUaVqLA


ptx

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U.S. Water Rockets1
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Re: ptx - 65m/213ft

Post by U.S. Water Rockets1 » Sat Sep 20, 2014 10:41 pm

You should consider building one of our LaunchPad Altimeters for your rocket. You can make it yourself for less than the price of commercially sold altimeters, and it has the advantage that it will directly control a servo motor that you can use for the parachute deploy. It will work with all of the various servo deploy mechanisms like the trap door side deploy scheme that's been around for ages, or, you can use it with the recently devised Radial Deploy system, if you want the latest and most reliable design!


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