The bottle blaster is a bottle rocket system designed to work with nothing more than a garden hose. The idea behind the bottle blaster is that a kid can shoot a standard plastic soda bottle in their backyard with little to no help needed from an adult.
What Does the Bottle Blaster Do?
It shoots bottles! The Bottle Blaster can shoot over 20 feet straight in the air or up to 50 feet in distance using only the natural pressure from your hose. If that seems like too much to contain in your backyard, you can always scale back the power by not turning the hose on all of the way.
It gets you wet! On a hot day, there is no better way to have fun and cool off than to play with water.
You can shoot it to your friends...or shoot it at your friends! You can play "Flies Up" with your friends by blasting a bottle to a group of them and seeing who can catch it. With a splitter on your hose, you can even set up 2 launchers and stage a western-style shootout.
Is it safe? Short answer: Yes it is. The destructive power is basically the same as lightly tossing a mostly empty bottle of water. You probably don't want the younger kids shooting them at each other, but the older kids will love it. Even if a small kid, window, car, etc. gets hit, it will be just fine.
What else do I need? In addition to the launchers and nozzles that come included in the kits, all that you will need are a hose and a plastic soda bottle. It works with any soda bottle, but we recommend the smaller ones (12oz to 20oz). Full 2 liter bottles are too heavy to shoot very well.
How does it work? See video below.
Is it safe? Long answer: As the mechanical engineer who designed the blaster, I'm gonna get into the physics to answer this question. When looking at the destructive capability of a moving object, the quantity to consider is momentum. Momentum is the product of mass and volume (p=mv).
When the bottle is first released, it has the highest mass because it is full of water. It's velocity, however is low because the escaping water is only starting to provide thrust and make the bottle go faster.
Later, as the last bits of water are leaving the bottle, the rocket reaches its maximum velocity. At this point, however, the mass is quite low because most of the water has been expelled. Mass and velocity are never high at the same time, so momentum (p=mv) stays low throughout the flight.
Basically, at any distance along the flight, the bottle is either too slow or too light to do any damage.