Jet Engine – What|Parts|Working|Types|Facts ?
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Jet Engine – What|Parts|Working|Types|Facts ?

November 19, 2019


What is 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 and trucks which convert the UP-And-down movement of the piston to rotary movement of crankshaft Jet engines simply Produces power by sucking air at the front side and 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 3,000 degrees The power of the Air is used to turn the turbine Finally when the air leaves it pushes that word out of the engine this causes the plane to move forward parts in Jet engines compressor The compressor is the first component of the engine it has many blades and is attached to the main shaft The compressor sucks and squeezes the air as it moves further which results in very high pressure of air combustor in this part the compressed air is mixed with the fuel and ignited the heat can reach up to 2,000 and 700 C Turbine The exhaust gases are made passed through turbine causing the turbine blades to rotate They are fixed on same shaft on which the compressor is attached Nozzle the Nozzle is the exhaust duct of the engine This is the part of the engine which produces thrust and propels the aircraft The converging design of the nozzle helps to accelerate the gases to a very high velocity Fan the fan is the first component in a turbofan the large spinning fan sucks in large quantity of A most blades of the Fan are made of titanium It then speeds this air up and splits it into two parts One part continues through the core or center of the engine where it is acted upon [by] the other engine components? the second part Bypasses the core of the engine it Goes through a duct that surrounds the go to the back of the engine where it produces much of the Force that propels the airplane forward This cooler Air helps to quite the engine as well as adding thrust to the engine Turbine the high energy airflow coming out of the combustor goes into the turbine causing the turbine blades to rotate The turbines are linked by a shaft to turn the blades in the compressor and to spin the intake fan at the front this rotation takes some energy from the high energy flow that is used to drive [the] fan and the compressor the [gas] is produced in the combustion chamber [moved] through the turbine and spin its blades the turbines of the jet spin around thousands of times They are fixed on shafts which have several sets of ball bearing in between them working of jet engine the [compressor] sucks the Air and compresses it this highly compressed air is then forced into combustion chamber? multiple Nozzles inject fuel into the air and igniter similar to Sparkplug 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 gasses pushing backwards action produces equal and opposite forward Force reaction Newton’s Third law of motion We call this forward force as thrust which but as the aircraft or vehicle forward types of jet engines the [first] jet engine successfully flew in august 1939 Hans [one] ohain of Germany was [the] designer of the first operational jet engine types of jet engines gas turbines? Turbojet engines This our most common type of jet engines The fans in the front does the work of compressor The compressed Air is then forced into the combustion chamber? after injection of fuel takes place the combustion of the high-pressure fresh air These hot expanding gases are then made to flow through turbine which causes the blade to rotate The turning of turbine also helps to run the compressor as they are connected to the same [driveshaft] the discharged gasses are then allowed to exit through nozzle at high speed which produces thrust and propels the aircraft a Turbofan engine is engine very similar to the jet engine Like the Turbojet [it] uses the same gas generator core. I dot e compressor combustor Turbine to produce thrust and turbine is used to run the compressor as well as the fan Turbo fans differ from the Turbo Jets in the way they have an additional component [of] fan The fan sucks in air and then further gets compressed and combustion takes place in the burner as you can see in the animation instead of burning the whole fresh charge only some part of it is used for combustion and the rest of the air just Bypasses goes around the engine The air that goes around the engine has a slight more velocity than the freestream So a turbofan gets some of its thrust from the core and some of its thrust from the fan the ratio of the air that goes around the engine to the air that goes through the core is called the bypass ratio if the fuel flow rate is same [for] the turbo Jet and turbo fan engine the Turbofan will generate more thrust because the flow of discharged gases gets accelerated by the bypass air This means that turbofan engines are more fuel-efficient than turbo Jets Turboprop engines Many Low-speed Transport and small aircrafts use turboprop engines Turboprop engines use the gas turbine go to turn the propeller the [core] is similar to the turbo jet or turbofan engine as discussed above The difference is instead of expanding all the gases through the nozzle to Produce thrust most of the Energy is used to drive the turbine the Turbine then turns the drive Shaft which rotates the propeller the exhaust velocity of a turboprop is low and Contributes little thrust because most of the energy of the core exhaust has gone into turning the drive shaft Ram Jets Ram Jets are very different type [of] jet engines from Design Point of view the front side of a [ramjet] has a conical part which compresses the intake air at the exit of the inlet the air is at a much [higher] pressure than free stream conditions dot fuel is injected for combustion and Produces thrust by expelling the hot gases through the nozzle These types of engines have no moving parts yet. They are able to achieve speed of mach 5 five times the speed of sound These engines don’t develop and static thrust hence a ramjet vehicle needs some type of assisted takeoff such as another aircraft Ram Jets are mainly used in guided missile systems scramjets the named scramjet comes from Supersonic Combustion ramjet Like a ramjet they consist of an inlet a combustor and a nozzle The primary difference between ram Jets and Scram Jets is that Scram Jets Do not slow the oncoming airflow to subsonic speeds for combustion they use supersonic combustion instant Scram Jets can operate at speeds above Maxixe where traditional ram Jets are too inefficient Advantages one does not have to carry oxygen To no rotating parts makes it easier to manufacture than the turbojet 3 higher speed could mean cheaper access to outer space in the future disadvantages one difficult expensive testing and development [to] very High initial Propulsion requirements Interesting facts in nineteen three the wright brothers flew the flier with a 12 horsepower gas-Powered engine It was Frank Whittle a British pilot who designed and patented the first [turbojet] engine in 1930 the Whittle engine first flew successfully in may 1941 Jet engines, not only power aircraft But also cruise missiles and unmanned aerial vehicles Uav or we also called them drones a car named SSC [thrust]? Currently holding the land speed record is powered by a jet engine

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  1. Sir Frank Whittle did in fact single-handedly invent the turbo jet engine. Calling the He178 a jet plane was a bit of a stretch. It was more a hair dryer powered glider. Von Ohain's engine design, with its radial turbine, was a failure. No production engine was ever produced. On the other hand whittles engine went on to power the world.

  2. What if we take little of air from the front thru a nozzle that opens at high speed and introduce it in the combustion chamber @ so instead of bypass some to cool the engine. It might give the turbocharged effect and may increase the thrust..

  3. None of these videos explain how the jet is started. Does it have a starter or what? How does it start turning?

  4. I wouldn't consider Turbojet Engines" as the most common type. It hasn't been common in almost half a century. Turbofan engines are just superior. It took off as soon as it was invented.

  5. here's anidea use magnetic Levitation <iframe src="https://www.facebook.com/plugins/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fjohn.viticus%2Fvideos%2F10154605803340493%2F&show_text=0&width=560" width="560" height="315" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowTransparency="true" allowFullScreen="true"></iframe>

  6. "After coming out of the turbine, then the gases are allowed to exit the engine through a converging shaped nozzle."…………..In reality, if you look at the geometry of the common nozzle gas path, it is diverging, rather than CONverging. The central exhaust cone tapers away quickly to a much greater degree than the outer common nozzle wall. From the turbine exhaust to the end of the common nozzle cowling the area INCREASES….thus slowing and cooling the exhaust gases. WHY is this important?…..because it slows and quiets the exhaust for noise abatement.

  7. Thank you Sr. Sir all this engines need oxygen to ignite more specifically oxygen gas. How can we transform this huge engine to a liquid oxygen igniting prototype engine?

  8. My name is Dennis sibospiff l study mechanical engineering l have first degree but no practical knowledge pls if there is any way l can achieved practical mechanical engineering let me know but no in 419 way because people use opportunity to distroy innocent person .

  9. at 3:00 it's showing the HI BYPASS design where 20% of thrust is actual exhaust, then 80% is clean air. They literally printed ((this is where the contrail comes from)).. When 80% bypass were developed (Rolls), they realized that it was almost impossible to produce a "contrail" compared to the old 100% HOT THRUST design. Yet now we have (TRAILS) bigger than the jet itself and they stretch across the entire sky. Hmmmm?

  10. The turbo fans of the engine also regulates the engine's temperature by keeping the engine from getting too heated as it also depends on the external air flow to keep cool. As for that automobile engines use coolant to regulate the temperature, jet engines are different, they don't use coolant because of the extreme freezing temperatures at high altitudes.

  11. Question Anyone – balancing airflow?.

    If I have this right, combustion creates high pressure air to turn the rear turbine blades which rotates the shaft which rotates the front blades AND the first stage compressor as they are attached to the shaft, thus completing that cycle. The turbine fan also creates airflow thrust. If the turbine fan does all that via combustion, what controls the air flow balance or force so you have the desired amount of air flow for thrust and shaft rotation? I assume rate of combustion or acceleration answers part of this, but I am still hung up on air flow balance if even an issue?

  12. is this engine the same as in the space rocket? if so, how could space rocket move as there is no air in the space?
    or is there another engine that could generate thrust force without air(oxygen)?

  13. this might sound like a dumb question but i just dont get how the combuster works. so the air and fuel mixture inside it gets hot and burned. why would that alone make the turbine rotate any more than just hot air? is it the density expansion inside the combustion chamber caused by all the heat?

    because the combustion that occurs inside the combustion chamber inside a jet engine is not a bang like in a v8 forexample. it's just a continious burn that heats up.

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