Aircraft Engine Types and Propulsion Systems | How Do They Work? 

Corrections from Joexer (a subscriber) 1:28 When Running Properly, fuel in an aircraft cylinder engine should not explode; An explosion or detonation is a malfunction and is very damaging to the engine. 1:57 - 2:25 While you are correct about the cooling and aerodynamic aspects there is also a huge aspect of efficiency, ease of manufacturing, maintenance, "ideal conditions", power to weight, fuel and metallurgy technologies and even vibration certainly come into play. 2:29 Maximum speed is not the sole benefit of a different engine technology. 2:32 Rocket engines are actually more efficient in some ways than turbojet engines under the premise of speed per fuel and weight. It is more propulsively efficient because of its light weight and small size for the weight with a propulsive efficiency of about 70%. 2:47 Jet engines is a poor choice of words because a rocket engine is a kind of jet engine. You seem to have conflated it with turbine engine. A Jet engine is any kind of reaction engine, that discharges a fast moving stream of mass to generate thrust. A Rocket engine or even a Pump-jet, as may be found as propulsion on a boat are both jet engines. The aeolipile dating to around 150 BC was also a jet engine. A Turbine engine is merely one such kind of jet engine. 4:01 A Ramjet is not a turbine engine as it does not make use of a turbine for compression 4:32 Modern Fighter Jets do not use Turbojets, they use Low Bypass Turbofans which are the previously mentioned turbofans with less bypass. Its also not very powerful. 6:02 This is not accurate. A ramjet is only like a rocket in the sense that it is a Jet engine. Unlike a rocket a ramjet is airbreathing and uses relative wind to the aircraft to slow and compress the air, then, it adds fuel to and ignites. It cannot function like a rocket and does not have oxidizer. Ramjets also begin producing meaningful thrust around .5 Mach at sea level (384mph) Also this misses a LOT of huge elements like, maintenance, economic factors (like fuel costs), distance, the mission requirement, aerodynamic drag, the limits on each kind of propulsion, other efficiencies, temperatures, density altitude, manned aviation concerns like pressurization, heat and time for the pilot, also you did not mention Lift, Bernoulli's, Otto cycle (Piston) or Brayton Cycle (Turbines) and perhaps greatest of all, The inevitable tradeoffs that result from anything that expends energy.

During the Second World War there was a test aircraft in Switzerland which was powered by a wood gasifier. It was called AC-4 (HB-USI) and required 34kg of wood per flight hour. 😀 The aircraft still exists today and can be viewed in the Flab & Fliegermuseum in Dübendorf.

The videos are amazing, very interesting and very easy to understand. I wish this video was made 5 years ago, because at that time I had a project about aeronautical technology museum for a college assignment. I think this video can really save my time.

A very interesting type of piston engine used in aircraft for some time was the rotary engine, where the whole engine rotates and the crankshaft remains stationary. The Wankel engine has also been used in aircraft as a proof of concept. The Pulse jet concept was also used in planes although again not very successfully.

During WWII the Germans and Japanese experimented with Pulsejet engines as well but they were mostly used in explosive ordinance. There were some prototypes/ concepts using the Pulsejet and it is pretty interesting. Especially the Japansese Kamikaze jet.

This one is way more informative than I had thought. Thanks for greater understanding.

Incredible. Thanks for visualization and animations of these engines, since it's much easier to understand that way.

I was wondering for a very long time about all this engine types... Thank you

The best video I have ever seen about aircraft propulsion system. Interesting, simple, easy to understand and concised yet detailed information.

very well organised and explained, love it. learned a lot, tnx dude! waiting for more educational content like this from you. cheers 🖖 by the way you made all this engine animations yourself?

Concerning the SR-71, at speeds above Mach 2.5, the spikes on the front of engine intake retract reducing airflow into the compressor and diverting it around to the exhaust where the afterburner ignites the fuel with it. I believe the process is gradual to prevent a flameout. At maximum speed the engines are operating as ramjets.

Thank you very much for the Chinese subtitles, which has greatly helped the group with poor English and the high-quality popular science of aircraft engines!

You didn't include the 5th type, the rotary radial, but you showed it on the front of the Sopwith saying they used this for cooling. Rotary-radial engines are quite different from radial engines, and should of had their own part and animation in this video.

Well explained and well documented. Keep it up 👍

This is the best explained cylinder engine motor vid

There is also the pulsejet, like the one used in the German V1 during WWII. Basically it is a tube with a self-resonant combustion chamber.

thank you for the explanation, the explanation is very easy to understand and the animation is very good. I as a teaching teacher about aircraft have been greatly helped by the videos that you and your team made, I hope you and your team will continue to work for the world of education. let me also download and make teaching materials for my students. thank you

One of the most beautiful video that I've ever seen

A quick note: the turbine section is generally considered a stage of a turbojet engine. Same with an afterburner if equipped.

These "Turvo"prop engines are awesome!

Very useful. Easy to understand video. Thank you!

Very nice video, fun, easy to follow, very interesting and information. This mans underrated.

I like how simple it is and easy to understand all in all.. tho willnyou ever make a video on variable cycle engines? They're not a common sight but basically they can change from turbofans to turbojets on the go, mostly prototypes for fighter jets

I have only a 1: 4 Scale Corsair, but the Radial with 250ccm - what a Amazing Sound ! ( want to build the Black-Bird out of carbon.. 1: 5 Scale! Great Video thx !!! 👍🏼🇦🇹✌🏼

Great video, breathtaking animation! Thanks a lot.

Excellent bien que très rapide donc très général (au point de contenir quelques erreurs de simplifications). Les sous-titres en français sont disponibles (il faut les activer.)

Thank you, this is very educational.

Excellent Video - very well explained.

the video was so good 💯💯 , i was looking for this kind of video only for my research works . loved it thank you very much for this video pls make more video like this .

Very nice presentation, and informative for engineer's.

Love this video Detailed, good explained Perfect

Great video! Very well put together.

Great stuff ! The steam plane really was a surprise !

I wanted to shout out the propfan: an experimental engine that could be described as a cross between a turbo fan and a turbo prop. It looked like a jet engine with propellers attached to the back. They ran a few experiments, but the advantages never emerged, and it was extremely loud.

This video is very helpful. Thanks a lot. Can you please make a video which includes the questions that mostly asked during interview for an aircraft technican. I mean technical interview questions. That will be a great help for a lot of people.

One note about the turbojet / turbofan. Turbojets on mil aircraft were phased out in the 50s / 60s. All modern fighters use turbofan engines, just with different bypass ratios than the ones used on big planes.

Thanks For share Knowlege in Sample words.

This is really well done.

damn well explained as always

Fantastic video, very well done

Belle présentation simple ,concise ,et instructive. Merci

Very informative video thanks.

Thank you!

شكرا جزيلا.. بارك الله فيكم 😇🌸👍

I want to become an aircraft mechanic and this is a great video!

Excellent explanation 👏 please do more videos on aeroplane parts 🥰

Amazing.thnx so much.i really enjy and like this video.i love to watch new advancement in aviation technology.

Am very impressed...Thanks bro

thank you needed this making me self a rc with an good plane prop engine

Beautiful explanation! 💯

Thanks for the illustrative presentation.I gained a lot from your video

Excellent 3D presentation. A sub and like for that.

Amazing explanation learnt a lot thankyou bro

Great content as always

Amazing video!!

Great video! thanks for sharing! I would like to ask you, what software did you use to make this animation? I would appreciate it if you could answer!

Great video

Thank you soo much sir for your great informmation.

wonderful video thank you

Great clearification

Very informative

Very interesting video. Well done!

Thank you so much

Beautiful 🎉🎉

Very informative.

I have a glider with a Wankel rotary engine, ASH 31 Mi, which is selflaunching.Works great! 😄

There are also 2 subcategories of turbojet engines; the ones that uses axial compressors and the ones that uses centrifugal compressors(centrifugal is still used on small turboprops or on turboshafts-one of my my favourites centrifugal engine is Rolls-Royce NeNe Mk10 used on T33 military aircraft)

thanks for the nice and interesting video clip !

Excellent Animation

One type that is used or was used is the pulsejet engines. They may still be used on model planes but they are very loud and the fuel consumption is very high. They powered the German V1's. Also, in model aircraft, there are ducted fan powered by internal combustion engines or electric motors.

Super explanation 😃

amazing information keep going

Awesome information

Thanks

I learn something useful today,

love it💕

thanks

In the piston engines you show a radial in the animation the engine in the biplanes shown flying is a rotary engine.

Very interesting video. I like it. Profesionally. Maybe w/GPL combustion. hybrid, nuclear, etc.

Very good presentation...no other disturbing bgm....❤️

Amazing

Awesome video!

The images and information are great.

good vid, u should ve talked a little more about ion propulsion, its really interesting from what I ve seen.

Thanks for this information , I wish successful for you forever ❤️

very good i enjoyed watching would like to see more

Well done.

So amazing video... Keep doing more 🔥🔥

Awesome

U r simple a superb explainer 👏

Thank you Would’ve been nice to include how some of these engines start. Especially the jet engine.

Its awesome

Very good explanation

Excellent video.

Tanks for the simple explanations! Would be awesome if you could make a Video only for the scram-jet-system. There are only a few ones on YT and they haven’t really good animations.

Thanks!

That was a very good video.

Stupendous video, you should have mentioned the scram jet

Super.👍

WOW SIR, THANK YOU SO MUCH. I GUESS THAT YOU MAY NOT BE FROM AMERICA OR THE UK (THE ACCENT). IT HELPS US TO UNDERSTAND, AS WE ARE INVOLVED IN HELPING PEOPLE AND NATIONS EVERYWHERE.