Rocket Engine Working PPT | Rocket Components | Jet Propulsion | Applications| Rocket Engine Fuels

Rocket Engine Working | Rocket Components | Jet Propulsion | Applications| Rocket Engine Fuels
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A rocket engine is a type of propulsion system that generates thrust by expelling high-speed exhaust gases in the opposite direction. It works based on Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.

There are several types of rocket engines, but the most common one is a liquid rocket engine. Here's a simplified explanation of how it works:

Propellant Storage: The rocket engine contains two main components: the fuel and the oxidizer. These are usually stored in separate tanks to prevent premature combustion.

Propellant Injection: The fuel and oxidizer are pumped from their respective storage tanks into a combustion chamber. The amount of fuel and oxidizer injected is carefully controlled to maintain the desired combustion ratio.

Combustion: Once inside the combustion chamber, the fuel and oxidizer are mixed together. They ignite, creating a high-pressure and high-temperature environment. The most common fuel is liquid hydrogen (LH2), and the most common oxidizer is liquid oxygen (LOX). This mixture burns rapidly and releases a large amount of energy in the form of hot gases.

Expansion and Nozzle: The hot gases produced by the combustion process expand rapidly. They are directed through a nozzle at the rear of the rocket engine. The nozzle is designed to accelerate the gases and convert their thermal energy into kinetic energy.

Thrust Generation: As the gases are expelled through the nozzle, they create a high-speed exhaust jet in the opposite direction. According to Newton's third law, the ejection of gases generates an equal and opposite force, known as thrust. This thrust propels the rocket forward.

Thrust Control: To control the rocket's direction and speed, the rocket engine may have movable parts, such as gimbaled nozzles or thrust vector control systems. These mechanisms allow the rocket to change its thrust direction and achieve the desired trajectory.

It's important to note that this is a simplified overview, and rocket engines can be much more complex, with additional stages, pumps, valves, and cooling systems. Different types of rocket engines, such as solid rocket engines or hybrid rocket engines, have variations in their designs and fuel systems. However, the basic principle of generating thrust by expelling high-speed exhaust gases remains the same.
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