I agree with you

I agree,. But it's not just a pretty complex thing, it's a hugggggee complex thing that making my brain burning since past 2 years😬

I​ am sometime so​ bad memory with​two time,​one I​passed tuned big car​ the​ other I​ go back to​ stay​way not how

Absolutely agree especially for combustion part

It is a deflating balloon that keeps getting more air than its using somehow

Hey I want to become an aeronautical Engineering can I email you for advice?

I don't know how I can get in touch with you from this platform

Im dreaming of becoming a pilot and I wanna start with aeronautical engineering, do you think it's harder than other engineerings

@@yagoovirus2751 why do you want to studt aeronautical engineer if you want to be a pilot?

@Index, would you be willing to review a Fan Blade design I created? Some feedback on it & the math I used would be nice

What’s drove the fan to start spinning ?As I understand, the compressor needs the fan to move spin first to compress the air for combustion

@@shafiqfahmi7252 Auxilary power unit provides bleed air to start engines

Excellent vid. Im still fuzzy on two things. 1) Does bypass air provide thrust or just surround the high pressure exhaust for noise reduction; and 2) Do turboprop fans generate thrust as they turn or is the sole function to pull air through to the compressors and create bypass? If they do generate thrust what percent of the overall thrust is fan and what percent is high pressure exhaust?

@@samuelwatson4857 Finishing up my aerospace engineering degree this year so I feel somewhat qualified to answer. 1: Bypass air does provide thrust! Basically you can think of thrust as the change in the momentum of the air that goes through the engine; as you may know momentum is simply mass times velocity. The reason high bypass ratios (the ratio of bypass air to core air) are more efficient is because rather than accelerating a small amount of air to very high velocities, like in a turbojet, they accelerate a large amount of air to relatively lower velocities. The reason this is more efficient is that it takes much more energy to accelerate air to a very high velocity. A good way to see this is to consider the relationship between momentum and kinetic energy. Momentum is mass times velocity, whereas kinetic energy is 1/2 mass times velocity^2, so for the same momentum, the energy required increases proportionally to velocity. This can also be seen in the equations for Specific Thrust (the ratio of thrust to the mass flow rate of air consumed by the jet) and in the equation for Specific Fuel Consumption (the ratio of the mass flow rate of fuel to thrust). In a turbojet, you get a higher Specific Thrust (Tsp), and a lower Specific Fuel Consumption (SFC). Whereas in a turbofan, you get the opposite. These quantities (Tsp and SFC) are inversely proportional to one another. So the answer to your question is that yes, the bypass air does create thrust, just like a propeller does. And it does it more (fuel) efficiently than a turbojet, though this comes with trade offs such as greater engine complexity, greater size, and as I mentioned, worse Tsp, which corresponds to worse thrust to weight ratios. 2: I assume you are asking about a turbofan in this question, rather than a turboprop. In modern high bypass turbofan engines, the vast majority of thrust is produced by the bypass air that is accelerated by the fan. In fact, the optimum bypass ratio (most fuel efficient) occurs when the bypass air exit velocity = the core air exit velocity. As you can see, with a high bypass ratio, somewhere around 8-9, this means that 8 to 9 times as much air is going through the fan than is going through the core, and with the same exit velocities, you can see that the vast majority of momentum change in the air is being done by the fan. So in modern high bypass ratio turbofans, upwards of 90% of the thrust comes from the fan, rather than the core. Sorry for this essay of a response but I hope it's helpful!

@@tonybalogna123 very good answer. To answer the other part of the question, turbofans do reduce jet noise, but the fan produces its own noise, overall noise is reduced however.

@animagraffs please make some videos. We know its not easy to make such videos, but we need your detailed explanations for complex stuff.

Check out his website in the description!

What a great comment and compliment! I wholeheartedly agree. This is now one of my favorite educational channels ever on UKposts!

it's been 10 months and he's still at 22.5k. you have cursed him

Tom Foulds ahhhh! I mean this is the kind of stuff people like. Not sure why it’s not hitting the UKposts algorithm :(

I just noticed he was under 1M. 🤯

@@ytsub7 he doesnt upload

@@mattrittman he doesnt upload ):

_Afterburner explained in one sentence_

It's not even just setting the air on fire twice, more like setting the fire on fire again.

what if we set the fire... on fire

Idea: what if we set all of the air in the world (except for where the thing is) on fire? Then the object would be everywhere at once

I don't know how afterburner works before I saw this comment section. THANKS!

Hey! Love your videos!

The ending was terrible. It just stopped abruptly.

Hey! Younger self!

Yeah back one future hero

Do you know if the F-16 uses a turbofan or turbojet engine? I searched it in Google and also in some videos and didn't find the answer

@@Elturbo157 While I don't have the expertise to comment on the designs of specific aircraft by heart, on a Wikipedia search it looks like F-16s usually operate on turbofan engines for propulsion. But if that is untrustworthy, I unfortunately cannot provide additional help

@@Encorous Thanks anyway, and good luck with the studies

@@Elturbo157 Thank you. Best of luck with whatever you're doing

The video does misidentify the fan duct as a diffuser. A diffuser is characterized as any part of the propulsion system that has a smaller inlet and a bigger outlet that reduces air velocity and converts it into increased pressure and temperature. For example the inlet duct on an F-100 served as a diffuser. It had a small opening in the front of the airplane that led to the larger diameter inlet into the engine. Its purpose was to reduce the high velocity of the supersonic airflow entering the duct and convert it to increased pressure at a lower velocity and higher temperature as it entered the engine. On a turbofan powered jetliner if the diameter of the inlet is smaller than the diameter of the fan then that space in front of the fan is called a diffuser. It also reduces the velocity of the incoming air while increasing the pressure as well as the temperature of the air flowing into the fan. Obviously the diffuser on a subsonic airliner will be a lot less radical than the diffuser on a supersonic jet fighter. As you pointed out other areas of the engine are also diffusers. The area around the combustor is a diffuser because it converts the kinetic energy of the airflow coming out of the compressor into pressure to force the air into the combustor. Then the area behind the combustor is a diffuser because it converts the velocity of the gas coming out of the combustor into increased pressure to drive the turbines.

@@joevignolor4u949 Diffusers work inversely at supersonic speeds, that's why the SR-71 had variable position cones at the intakes of each engine

He clarified this about 2/3 into the video.

it is at reasonable speed. Watchers can always pause themself if they need more time

I love the internet for the same reason but sometimes I worry that I don’t retain anything because I’m so stimulated.

But I won't be a passenger on that ajrplane lol

👁👄👁 your not planning of jumping in front of a truck, are you?

UKposts has an option where the community can submit their own subtitle version. Since it's just me doing these projects and they're an incredible amount of work, I did the U.S. English version and am hoping others can help with other languages. I think a UK English or even International English version with metric conversion would be great if you want to help out!

Then you have problems

Then you can’t get it lol