How a jet engine works

A good overview of how a jet engine works. This specific example is the General Electric GEnx that is used on the Boeing 787. This animation was produced by General Electric.

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Jet Engine, How it works ?
Help us to make future videos for you. Make LE's efforts sustainable. Please support us at Patreon ! https://www.patreon.com/LearnEngineering The working of a jet engine is explained in this video in a logical and illustrative manner with help of animation. This video takes the viewer through 1-spool engine, 2-spool engine, turbo jet engine and turbofan engine. Like us on FB : https://www.facebook.com/LearnEngineering Voice-over artist :https://www.fiverr.com/mikepaine





Jet Engine - What|Parts|Working|Types|Facts ?
What is a Jet Engines :- A jet engine can also be called as a reaction engine because the reaction produced by the engine propels the aircraft or vehicle. Jet engines are internal combustion engines discharging hot Exhaust gases at high velocity that generate thrust. Unlike the internal combustion engines in automobiles & trucks which convert the up & down movement of the piston to rotary movement of crankshaft, jet engines simply produces power by sucking air at the front side & discharging it at the back side. What is Thrust? Thrust is the forward force that pushes the engine and, therefore, the airplane forward. Sir Isaac Newton discovered that for "every action there is an equal and opposite reaction." An engine uses this principle. The engine takes in a large volume of air. The air is heated and compressed and slowed down. The air is forced through many spinning blades. By mixing this air with jet fuel, the temperature of the air can be as high as three thousand degrees. The power of the air is used to turn the turbine. Finally, when the air leaves, it pushes backward out of the engine. This causes the plane to move forward. Parts in Jet Engines ? Compressor Combustor Turbine Nozzle Working of jet engine ? The compressor sucks the air & compresses it. This highly compressed air is then forced into combustion chamber. Multiple nozzles inject fuel into the air & igniter(similar to spark plug) causes air to catch fire. The fuel burns with oxygen present in compressed air producing hot expanding gases. These gases are passed through the turbines which causes the blades to rotate. This turning of turbine also rotates the shaft to which it is fixed. The same shaft in turn rotates the compressor. Which means instead of just letting out those hot gases, they are indirectly used to suck fresh air at the same time. This is the reason we need turbine after the combustion chamber section. After coming out of the turbine, then the gases are allowed to exit the engine through a converging shaped nozzle. The force of the Exhaust gases pushing backwards(action) produces equal & opposite forward force(reaction)(Newton’s third law of motion). We call this forward force as thrust which powers the aircraft or vehicle forward. Types of Jet Engines ? turbojet engines turbofan engines turboprop engines Ramjets Scram jets turbo-shafts Interesting facts ! In 1903, the Wright Brothers flew, The Flyer, with a 12 horse power gas powered engine. It was Frank Whittle, a British pilot, who designed and patented the first turbo jet engine in 1930. The Whittle engine first flew successfully in May, 1941. Jet engines not only power aircraft but also cruise missiles & Unmanned Aerial Vehicles(UAV or we also call them drones). A car named SSC Thrust, currently holding the land speed record, is powered by a jet engine.





Compressors - Turbine Engines: A Closer Look
Lets look around inside the compressors of a few different turbine engines. How does it all fit together, where does the air go, and how does it work ?





How engines work?
Jet engines move the airplane forward with a great force that is produced by a tremendous thrust and causes the plane to fly very fast. All jet engines, which are also called gas turbines, work on the same principle. The engine sucks air in at the front with a fan. A compressor raises the pressure of the air. The compressor is made with many blades attached to a shaft. The blades spin at high speed and compress or squeeze the air. The compressed air is then sprayed with fuel and an electric spark lights the mixture. The burning gases expand and blast out through the nozzle, at the back of the engine. As the jets of gas shoot backward, the engine and the aircraft are thrust forward. As the hot air is going to the nozzle, it passes through another group of blades called the turbine. The turbine is attached to the same shaft as the compressor. Spinning the turbine causes the compressor to spin. Follow us on facebook : www.facebook.com/EWC102/




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