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 its combustion chamber, produces movement . They can also be propelled by a propellant charge that is burned inside the launch tube.
Rockets are also machines that, thanks to a combustion engine , generate the kinetic energy required to expand certain gases that they expel through a tube. That's 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 probes and artificial satellites into outer space, and even astronauts .
In this sense, we cannot forget the existence of what is known as a space rocket. This is a machine equipped with a combustion engine that produces kinetic energy for the expansion of gases to provide 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 single-phase rocket, also called monolithic, and the multi-phase rocket. This has, as its name indicates, several phases that occur sequentially.
-If we take into consideration the type of fuel, we come across the solid fuel rocket, where the oxidizer and the propellant are mixed in a solid state within the combustion chamber, and the liquid fuel rocket. The latter is characterized because the oxidant and propellant are stored outside the aforementioned 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 Earth's orbit.
-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 adheres to a rod, is also called a rocket. The cylinder has a fuse at the bottom: when it is lit, the combustion expels gases and makes the rocket ascend very quickly , until it explodes in the air generating a very loud noise.