Water Rocket
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Uploaded by
ScribdTranslationsWater Rocket
OBJECTIVES
GENERAL OBJECTIVES:
. Design and build a scale prototype of a functional hydraulic rocket based on propulsion.
jet and in Newton's third law.
SPECIFIC OBJECTIVES:
. Identify and recognize Pascal's principle in order to apply it in the development of the hydraulic rocket.
. Identify Newton's laws, especially the third one, which explains how a rocket works.
. Recognize the principles of uniformly accelerated motion, parabolic motion, and free fall.
which are evidenced in the development of the project.
. Propose and develop the corresponding equations that explain the project's development.
INTRODUCTION
ROCKET: It is a vehicle, aircraft that obtains its thrust from the reaction of the rapid expulsion of gases.
from combustion from a rocket engine. Certain types of rockets are referred to as missiles and in this change of
The name does not involve size or power, but a missile is generally referred to as any rocket for use.
military capable of being directed or actively controlled to achieve a target.
WATER ROCKET: It is a rocket that is propelled by the pressure of a fluid, in this case (water), in the
pressure is generated inside the rocket using air. When the pressure reaches its limit, it will
find an escape through the weakest point which is the hole where the cork is located and
All the pressure is released from there causing the rocket to take off.
BACKGROUND WATER ROCKET
Around the year 1960, Japan imported water rockets manufactured in Germany and the United States.
In the mid-1980s, water rocket competitions were held in Scotland.
The polyethylene terephthalate bottles for carbonated beverages, which is the material that is generally used
Water rockets were first made in 1974 in the United States and their use
increased rapidly as it spread among consumers.
The idea of manufacturing air pressure propelled rockets originated in 1983 as a final year project.
at a university in the US. Since then, the water-powered rocket prototype has been gaining
popularity until it was used by NASA in search of new talents by American schools.
JET PROPULSION: Its principles date back more than 2,000 years, when Hero of Alexandria
an artifact known as an eolipile which consists of a chamber of air (usually
a sphere or a cylinder), with curved pipes through which the steam is expelled. The resulting force from this
expulsion causes the mechanism to start spinning, according to the law of action and reaction. Normally, the
water is heated in another chamber, and connected to the previous one through tubes where the steam passes, although
it can also be heated in the same chamber from which the steam is expelled.
How to make a water rocket
Once you have all the necessary components, you can begin the construction of
this home experiment. The first thing you need to do is put water in the bottle, more precisely
up to the middle. Having done this, place the cork in the mouth of the bottle and insert the inflator's spike.
inside, making sure that the tip of the skewer protrudes at the inner end of the bottle, as it is through
where, later, the air will enter.
When the system is ready, all that is left to do is to place the bottle with the cork.
downwards and hold it in that position with something, never with the hand. Then you can start the
experiment introducing air with the pump into the bottle. The faster it is done, the more
fast will be the rocket.
What do we need to make a water rocket?
If we want to make a basic rocket, all we need is:
A two-liter plastic bottle of soda.
A cork.
A pump.
Water.
Some object to hold our missile.
If you want to give the experiment a touch of professionalism, you can add some duct to
transmit the water pressure, essentially something like a PVC pipe. You can also add some
fins to the missile so that it can achieve more stability and you can use some other object as a missile,
something more aerodynamic than a bottle to achieve a longer flight.