Jet Engine, How it works ?
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Jet Engine, How it works ?

August 10, 2019

jet engines have been the successful drivers of aircrafts for nearly a century now in This video we will explain the technology behind the jet engine in a logical step-By-step Manner a jet engine keeps an aircraft moving forward using a very simple principle The same that makes an air-filled balloon move Yes, Newton’s third law of [motion] just [like] the reaction Force produced by the Air moves the balloon The reaction Force produced by the high speed jet at the tail of the jet engine makes it move forward so the working of jet engine is all about producing a High-speed jet [at] the exit the higher the speed of the jet the greater the thrust force The thrust force makes an aircraft move forward Such high-speed exhaust is achieved by a combination of techniques If you can heat the incoming air to a high temperature it will expand tremendously and will create the high velocity [jet] For this purpose a combustion chamber is used An atomized form of the fuel is burnt in the combustion chamber effective combustion requires air to be at moderately high temperature and pressure To bring the air to this condition a set of compressor stages are used The rotating blades of the compressor add energy to the fluid and its temperature and pressure rise to a level suitable to sustain combustion The compressor receives the energy for the rotation from a turbine which is placed right after the combustion chamber? The compressor and turbine are attached to the same shaft The High-energy fluid that leaves the chamber makes the turbine blades turn You can see that the turbine blades have a special airfoil shape which creates lift force and make them turn As the turbine absorbs energy from the fluid [its] pressure drops Through these steps we have achieved our objective a really hot and high-speed air emitted from the exit of the engine the engine case becomes narrower towards the outlet which results in even greater jet velocity In short the synchronized operation of the compressor combustion chamber and turbine makes the aircraft move forward Modern aircrafts use a slightly [improved] compressor turbine arrangement called a [two] spool Here two independent turbine compressor stages are used the shaft of the outer compressor turbine passes concentric [LI] through the inner one The outer turbine is subjected to a low energy fluid and will run at a lower speed than the inner turbine Low pressure blades are longer this [low-speed] helps to reduce centrifugal stress induced at the root Thus improving the blades life Some modern aircrafts even use a three spool engine The engine we have discussed so far is more specifically called as turbo jet engine Turbo jet engines tend to Produce high levels of noise [A] Revolutionary Improvement was made to this engine by fitting a large fan with the low pressure spool such engines are called Turbofan engines and almost every commercial aircraft run on them a Turbofan engine bypass is a huge amount of air The ever narrowing bypass duct provides a good jet velocity to the bypassed air in a turbofan engine the majority of the thrust force comes from the fans reaction force further the fan greatly improves Airflow in the system by sucking in more air Thus it helps to improve the thrust This means high thrust creation with an expense of slightly more fuel This is [the] reason why Turbofan engines are highly fuel economical The noise produced by a jet engine is highly dependent on the exit jet velocity Since in a turbofan the bypassed cold air gets mixed with the hot air it is possible to keep the outlet velocity within a limit Thus it overcomes the noise problem With quieter exhaust and better fuel economy the turbofan engines continued to dominate aircraft propulsion systems We hope this provided a nice introduction to the working of jet engines. Thank you for watching this video

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  1. LIAR! The modern jet engines run on almost NO fuel. The massive compression of just AIR causes severe heat and 1 drop of fuel makes a VEEEERY large combustion boom for the thrust .

  2. Yeah, interesting animation but the rendering of the fan shapes is misleading and sort of confusing. At 5:05 doesn’t the inlet turbo fan reverse shape?

  3. Considering the blades and all other stuff are working the right way :
    Always wondered why doesn’t the high pressure hot flames go reverse (they only escape from back while they can travel to front of the engine passing through the compressor)
    I mean according to the physics laws the pressurized air atoms push’s in the all directions

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    Your practical video lectures help us to understand and learn quick.

  6. I always wonder with 2~4 turbine a plane can fly. How much energy is produced by them in terms of ground transportation?

  7. Hm i still don't really get it. I would like to know why the combusted fuel, combined with air propels the engine forward. What's the difference with regular propellers?

  8. Didn't v run da tea shops or Barbara kadai saloon ? show da great poster of The Royal casino it's true machi n can b proved ??

  9. 0:20 "the same way an air filled balloon moves," me: displacement? "Exactly, Newtons 3rd law of motion."

  10. Yes. The front blades indeed appear to be pitched reversely, to judge by the displayed rotation animation throughout this video. The correct pitch is at last shown briefly at the very end of the video; at about 5:20 min/sec. Thank you very much for taking the time and effort to post this very enlightening video. We appreciate a well-organized and clearly explained documentary. We look forward now to another video that may deal in the Electrical aspect of these same mechanisms; such that explains the Starting System, from beginning to end, perhaps. The Fuel and Acceleration System would also be quite an interesting video to watch, to conclude the understanding of the entire system in basic fundamental concept. Thanks again.

  11. so basically, it does the squeeze to the air, squirt the fuel, the fuel and air become friends and come together, ignite and push the plane so it go fly?

  12. I am now putting the Sindhi version of this video on my channel from this account. Earlier, I had uploaded from my account ahsanahmadursani. I have now published it on my new channel:

  13. Hi, I am already your partner. I have uploaded Sindhi translation of this video on the following link. I do not see any reason for the copyright strike. I had been allowed by you to do translation and upload.

  14. So do you start this engine with a pull cord like a lawnmower? The combustion chamber only works when the compression blades are turning? So if you pull the starter cord to get the blades turning do you light a match to ignite the combustion chamber? Will this fit on my bycicle? My mom doesn't let me play with matches. Guess I'll be a astronaut when I grow up unless you need a match to start a rocket engine? Maybe I'll just make matches when I grow up.

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  16. Can someone explain why the thrust go one direction? Not both direction? I understand the air comes from the left, but the burning of fuel is in the open chamber. So the jet should thrust in both way.

  17. This video watched. I understand how are worked jet engine. Thanks for Internet and Channel mentor,,

  18. Nice

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  19. It is not rotating in the wrong direction……..have you ever watched any high speed wheel or rotor in motion……if you look at it close there is an optical illusion of it spinning backwards, slowly, that could be what this is.

  20. Rollce royle versus General Motor
    Witu General Electric
    GM and GE and rollce royle

    What a game point?

  21. No fuel, its compressed air technology. F1 cars are the same.
    Brainwashing the public with the fuel bullshit.
    Free energy being hidden from us.

  22. lol those blades are spinning incorrectly, it isnt taking the air in because going the other way you look at the blades, then you can tell the air is going in…

    not in this case.

  23. It is worth mentioning that Turbofan engines used this days everywhere does not produce Condensation Trail ( )

  24. Jis tarha ap ka jet engin ka fan rotate kar raha is tarha air pachi ni agay move kara gi,, phala khud principal samag phir dosro ko samga

  25. Fighter jet engines are either afterburning turbojets of afterburning TurboFans with low bypass.✈ Fan blades, compressors, combustion chamber, turbines and a shaft to drive the compressors. GTF Geared TurboFan.

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