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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.

Cool Gardena nozzle source

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Pere Ubu
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Cool Gardena nozzle source

Post by Pere Ubu » Fri Sep 08, 2017 5:13 pm

I was just at our local Home Depot earlier today looking for water rocket stuff and came across a set of Melnor "Quick Connect" hose connectors - U.S. "Gardena" connectors, but here's the cool thing: it's a 4 piece set with one each male and female nozzles and connectors, and the female nozzle actually fits on a soda bottle - no modification needed! (The threads aren't an exact match and I had to mangle my Dr. Pepper bottle to get it back off, but teflon thread tape should help.) The set was something like $4 and change.

Sorry if this is old news, but I think it's a pretty neat find.


Why your rocket is unstable = CN⍺1/2⍴v2⍺Ar

Northeast Pataphysical Institute, Aerospace Division

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