What is a rocket engine?
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rocket engine is a type of jet engine, which means that it is a reaction motor that creates a thrust by draining the high -speed gas current in the opposite direction of traveling, which is driven forward as a result of maintaining momentum. The distinguishing characteristic of the rocket is that its power current is produced exclusively from the engine's own driving compound, and none of this hindered them from the external environment. This differs from other forms of jet engines, such as Turbojets, Turbofencies and Ramjets that mix their fuel with compressed air from the atmosphere to burn fuel and create jet currents. Rocket engine technology is essential for Spaceflight because missiles can work outside the atmosphere. The missiles are also used for purposes such as fireworks, weapons and high -speed aircraft.
There are several forms of a rocket engine. The most commonly used type is called chemical racket. The chemical racket is driven forward by chemical reactions in its propellant which prodIt utter heat and creates a stream of high -speed exhaust gas, which is drained from the back of the rocket. Each chemical rocket carries a flammable driving substance as a fuel supply. This is combined with an even more flammable substance called the initiator or lighter. The initiator is ignited, usually through an electric spark or pyrotechnic charge and heats the heat that burns and produces power exhaust nozzles.
chemicals of the driving crime may be solid substances, liquids or solids combined with liquids or gases. In a solid fuel rocket, a solid driving substance called grains, together with oxidative chemicals, which serves as an initiator, is placed, while the liquid fuel missiles store the liquid drive and the initiator in separate tanks until time is released in the combustion chamber to mix. Hybrid fuel missiles use a solid movement, which is an SMenhanced with a liquid or gaseous initiator stored in a separate tank until it is ready for use.
The most common solid fuel that is used today is called ammonium chloristan compossite hooker (APCP), which refers to a number of different chemical mixtures that include both the drive and initiator. APCP usually includes oxidative ammonia chlorista (NH 4 clo 4 ), elastic polymers called elastomers and powder aluminum or other metals. Liquid rocket fuels often consist of liquid oxygen mixed with refined kerosene or liquid hydrogen or dinitrogenic tetroxide (n 2 4 ) mixed with hydrazine (n h ) or one of its derivatives.
solid fuel missiles were the first form of a rocket engine, but to a large extent they were replaced by more efficient liquid fuel and hybrid constructions. However, they are still commonly used for purposes such as fireworks and model rocket, and sometimes usedThey can start the cosmic flight to the launch useful load in orbit or as accessories to the liquid fuel rocket to increase the capacity of the payload. For example, a shuttle uses one large liquid fuel rocket lined with two smaller rockets with solid fuel to achieve orbit.
Thermal missile uses a driving substance that is heated from an external heat source rather than chemical reactions in the movement itself. Hot water missiles, also called steam missiles, use water as a movement by heating to make steam nozzles. These are often used in very high -speed ground vehicles such as competitors. Electrotermal missiles use electric fields to produce heated plasma, which then causes fireflows. Electrotermal missiles are useful for the production of short draft explosions and are commonly used for purposes such as altitude control in satellites.
has been designed several other types of thermal missiles and can NAKONEC to see use. The solar thermal missile would use solar energy as a heat source, Eitji exposes the driving substance directly from the sun from the Sun or by means of solar energy to power the heat exchanger to heat the driving substance. Solar energy would be collected and concentrated through mirrors or lenses to provide enough concentrated heat. The thermal missile motor can also be powered by energy transmitted to it from an external source using laser or microwave rays. The thermal missile powered by a nuclear substance could warm up the driving substance with a nuclear reactor or from the disintegration of radioactive isotopes.