How to make a water rocket from a plastic bottle
Tips Do It Yourself / / December 19, 2019
Summer is in full swing! For those who are already fed up with barbecue and sun loungers on the beach, we offer biting idea for outdoor activities: water rocket. Kids will squeal with delight, the girls - struck on the spot, neighbors to testify in a fury very surprised. The idea is not new, in zabugore water rockets are very popular, there are even special championships start these things. They can be bought at the store, but you can do it yourself. About it and talk.
The operating principle of a water rocket is very simple. Need a plastic bottle one-third full of water, a bicycle or motor pump, a pin and a launching pad (launcher), on which the rocket is fixed. The pump pumps air - bottle fly high and far, splashing around. All the "fuel" is pressed in the first moments after the start, and then the rocket flies a ballistic trajectory (and therefore the center of gravity as much as possible take out forward).
But here's the technical variations in the manufacture of this design can be very different. Some fans create real masterpieces:
Consider one of the simplest options.
1. Choosing a bottle
The missile should not be too long or too short, otherwise the flight will curve or does not take place. The optimum ratio of diameter / length of 1 to 7. Volume of 1.5 liters is fine for the first experiments.
2. select the plug
You will need a plug valve of lemonade or any other beverage. This will be a rocket nozzle.
It is important that the valve was new, not worn, not breathable. It is best to check it out in advance: the empty bottle, close the lid tightly and squeeze.
3. Fasten nipple
At the bottom of the bottle it is necessary to make a hole and fix it in the nipple, "nose" out. Here the main thing - to achieve the highest possible integrity: tighten the clamping screw to the maximum, you can experiment with the glue or clay. The bottle should not pass air.
4. cut stabilizers
The rocket flew smoothly, it needs to be properly set. The easiest way - to make the stabilizer (feet) from another plastic bottle. To do this, cut the bottle in half, straightened. Then, on this flat surface draw the outline of the stabilizer, provide reserve for attachment to the body of the missile.
Now cut out the contour of the stabilizer and glue it to the rocket tape.
The figure also shows the weighted body rocket, the author used the trimmed part of another bottle with a small weight-bolt in the cover. In fact, there is full scope for imagination and experimentation, to accurately determine the optimal load in your head missiles only after a few runs. Form the legs may also be different, for example, you can use the upper part of the plastic bottle, it priladit plastic feet, and has put itself into a rocket:
With regard to the launch pad, then too you can pokreativit plenty. Someone is preparing complex structures with a guide axis, someone carved out of wood a special device, and someone simply fixes a rocket on a flat surface with improvised means.
In principle, the simplest water rocket after this procedure, you have already done. You only need to bring along plenty of water, a pump and an assistant: it will keep the rocket and press the stopper down valve arms while you pump air pump. On the 1.5 liter bottle is recommended to upload 3-6 atmospheres (in this sense it is more convenient car pump), then disconnect the hose and at the expense of "three or four" release the plug. Rocket launched! Fly it high enough and effectively, and most importantly - the whole process is not life-threatening. True assistant usually have to take a shower forced out of "fuel" :)
If you like this idea and want to experiment further, be sure to check, for example, here, There is a missile more difficult, with these launchers. here Image with steps, though in English, but it is available all drawn. Well, if you liked the video and wanted to repeat something like this, welcome to the club missile simulation: uncle lasting use at start several bottles with compressed air, and only one contains water.