The Catalan word coet derived from rocket, a concept that has several meanings in our language. A rocket can be a device that travels through the air at high speed and is used as a weapon.
These rockets usually have a reaction engine (known as a rocket engine) that, through the expulsion of gases that come from their combustion chamber, produces movement. They can also be propelled by a propellant charge that is burned inside the launch tube.
According to DigoPaul, rockets are also machines that, thanks to a combustion engine, generate the kinetic energy that is required to expand certain gases that they expel through a tube. That is why they are said to have jet propulsion. A spacecraft that uses this type of propulsion is also often called a rocket.
With a rocket it is possible to send artificial probes and satellites into outer space, and even astronauts.
In this sense, we cannot forget the existence of what is known as a space rocket. This comes to be a machine equipped with a combustion engine and that produces kinetic energy for the expansion of the gases with which to have jet propulsion.
There are several types of space rockets, the most important being the following:
-If we take into account the number of phases, we find the one-phase rocket, also called monolithic, and the multi-phase rocket. This has, as its name indicates, several phases that are happening sequentially.
-If we take into consideration the type of fuel, we come across the solid fuel rocket, where the oxidant and the propellant are mixed in solid state inside the combustion chamber, and the liquid fuel rocket. The latter is characterized in that the oxidant and propellant are stored outside what is said chamber.
Throughout history there have been important rockets because they have managed to take man into space. We are referring to some such as the following:
-Vostok-K 8K72K, which is the first manned rocket. It was made in Russia and was responsible for making Yuri Gagarin the first man to reach space.
-Atlas LV-3B. An American rocket that made John Glenn the first man to reach the orbit of the Earth.
-Saturn V, the rocket that took Neil Armstrong, Michael Collins and Buzz Aldrin to the Moon.
The pyrotechnic element that has a tube with gunpowder, which is attached to a rod, is also called a rocket. The cylinder has a wick in its lower part: when it ignites, the combustion expels gases and makes the rocket ascend with great speed, until it explodes in the air generating a very loud noise.
