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Launchers

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    For absolute beginners a launcher is the most difficult part of water rocketry.
Launch Tube
30-32mm Launcher
22mm Launcher
<16mm Launcher
Simple Launcher

Launch Tube

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    A launch tube is a pipe extending from the launcher which acts as a piston, increasing the acceleration upon launch. This simple modification has to fill the nozzle as much as possible. The closer the launch tube seals the nozzle, the more efficient the launch tube is. 
    The main advantade is to extend a launch tube above the waterline to stop large amounts of water flowing into the pump.



30-32mm Launcher

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    This launcher is designed to launch rockets with larger than standard nozzles. Larger nozzles are more suitable at higher pressures. 
    With the capability to seal onto a 30mm or 32mm ID nozzle. The step where the o-ring sits is a standard 22mm nozzle, the diameter steps down further along the nozzle and moving the o-ring there will reduce the nozzle size that it can seal to.
    

O-ring Positioning

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O-ring in 30mm position.









O-ring in 32mm position.

Large Nozzle Intergration

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    A 30mm ID nozzle glued into my Venturi-1
The taper of the bottle forces the nozzle to stay when the rocket is pressurized.


22mm Launcher

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   Two 20mm OD pipes either side of the o-ring are glued on to hold the o-ring in place. Below the seal a 25mm pipe has holes for cable ties that hold down the rocket. Cable tie heads sit on the bottom of the 22mm and 25mm pipe to hold onto cable ties while a loaded rocket sits on the top of the 25mm pipe when seal on the o-ring.


<16mm Launcher

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    This launcher is designed to seal onto the outside of a 16mm OD PVC pipe. Therefore, this can launch rockets with a resticted nozzle of 12mm. 
    Because the launcher seals from the outside, the inside can be restricted to any size desired.
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Simple Launcher

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An easy to construct 22mm Water Rocket launcher designed by Arnold at WaterRocketLaunchers.com

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