Understanding Helicopter's Engine | Turboshaft

[@es10_]

2017: How a helicopter engine works 2021: helicopter lore

[@topphatt1312]

*HELIKOPTER KELIKOPTER* KOPTER kopter…

[@Parc_Ferme]

From a non-expert perspective, the turbo shaft engine have so many movable parts that is easy to fail. However, i read in the report of a recent helicopter crash, that killed a famous brazilian journalist, the main cause was due to lack of maintenance of the compressor rotor for more than 30 years. Its impressive that such a complex engine worked more than 3 decades without maintenance.

[@fbrengenhariadeprojetos945]

Boa noite. Parabéns pelos demonstração, excelente. Poderiam me fornecerem os diametros do ROTORES, materiais das câmaras e dimensões gerais. Desde já agradeço. Att.Fernando Ferreira Ramos E-mail - [e-mail] Cel. [phone]

[@simplywonderful449]

There are more parts in a piston aircraft engine, and the reciprocating motion of a piston engine creates an extraordinary amount of wear on the machine, causing vibration and eventually, damage. I'll take a turbine any day.

[@tyronenelson9124]

@@simplywonderful449 You are forgetting that the turbine engine has a slight rpm difference to a piston engine.

[@marajevomanash]

Smaller drones with simpler parts would fare much better.

[@victorpiedra6742]

@@tyronenelson9124 in a turbine engine you only have rotational motion, and all moving parts does it in the same direction and speed, well in coaxial compressors o turbo shaft you got 2 rotational directions, from mechanical moving parts perspective, a jet engine works like a charm copared to a piston engine

[@zed804]

It amazes me what we humans are capable of creating.

[@jordanrick2931]

Sometimes I struggle tying my shoes

[@williamgibb5557]

Good reason why GOD gave us 10 billion brain cells!

[@wisammoeali]

it was years of researching and adding parts to it ,and as time go they added more parts to improve and that made it so complex , it wasn't made at once .

[@mohammadal-qurashi1884]

Still not a proper Covid 19 shots!!!

[@Errcyco]

Real rap

[@TheRomichou]

What a great set of animations! Top quality production here. Thank you!

[@manospitsikalis7587]

sodium ion graphine batteries for cars

[@ArnoId-Schwarzenegger]

You're welcome

[@av8r6969]

I used to teach this as a U.S. Army Maintenance Helicopter Test Pilot and I have to say, this was an amazing video. Perfect for those people out there to get a better understanding of the works of a turbine engine. Thank you very much!

[@TJ-dh2sr]

Learned engine mechanic for aircraft here in germany and this is one of the few explanatory videos about this topic in which I did not notice even the slightest fault. Not even a vocabulary mixup or inaccuracy. Really great to see this high quality videos on youtube again!

[@shlokmishra08]

Amazing job! A big salute to people who made this all happen

[@RubenLensvelt]

I'm a maintenance engineer and already knew everything that was said, but I stayed and watched the whole video because the production value is so high.

[@fidelcatsro6948]

this is really going to guzzle fuel much more than the normal ICE right?

[@mrifixplanes1813]

Yes, but gas turbines generally have a much higher power to weight ratio. For example: a Pratt and Whitney PW207D2 makes 610hp (455KW) for 248lbs (112.7Kg) a Mercedes AMG 5.5l V8 Bi-turbo makes 510hp (375 kW) and weighs 460lbs (209Kg)

[@decarli4280]

REALLY WOW. when are the tours of your boyhood home?

[@fidelcatsro6948]

mrlfixplanes great comparison!! but the power outputs of a turbine will be like 610hp at gazilion rpms compared to the reciprocating ICE at several thousand rpms...this means an idle at the traffic lights or normal street use results in super heavy fuel consumption..

[@mrifixplanes1813]

Yes of course, that's why gas turbine engines aren't used in cars.

[@robo3915]

Great video, fantastic graphics! I’d add one thing, the #1 way engine manufacturers prevent compressor stalls is by using a bleed valve (or T53 bleed band) type feature. Stalls most commonly occur during accel or decel unless you have damage like you mention. (30 year Helicopter mechanic, changed many bleed valves!

[@pedrom.7244]

Currently studying 4th year of Aeroespace Engineering. My professor recommended us this video. Keep going!

[@KowboyUSA]

Even though I already understood the contained information, the sweet visualization and the direct to the point accompanying explanation made this video a pleasure to watch. Big thumb up.

[@catlady8324]

John Ratko Sure you did. Sure you did.

[@siddhuusmani3901]

John Ratko f

[@erickwon8528]

You all are gay

[@Hunters_Games]

Great job mentioning the viarable pitch blades. However, not every engine uses these. For example, the T55 actually uses what's called a bleed band. A small metal band controlled by an actuator and it goes on the outside of the compressor case half. This gives the pilot control over being able to bleed some air if the pressure in the axial compression stage is still too much for the centrifugal stage while initiating runup. [From a 15B helicopter engine mechanic for the Army]

[@SabinCivil]

Hi, We are very close to the next milestone. Please support us at www.patreon.com/LearnEngineering . Your support keeps us going !

[@RajeshGupta-oc9ix]

The New Logo for Learn Engineering is good!👍👍👌👌 I have a suggestion for your Logo. You should design your Logo like Blueprint and Rough Engineering Sketches of one or more simple but interesting technological objects (such as Wind Mills, Solar Panels, Rockets, Electrical Motors, et cetera) and at the centre of them there should be written in block letters, "Learn Engineering". Thank you! 😊☺☺😊

[@SabinCivil]

We use Blender.

[@ayousmith250]

Learn Engineering turbine

[@jadariusmcqueen4883]

Learn Engineering I will

[@RCHeliJet]

Very nice Work.

[@RCHeliJet]

Fantastic Video, from Switzerland greetings RCHELIJET

[@Ray-oe5fc]

I'm an A&P that retired from a company called Petroleum Helicopters Inc. in Lafayette, LA. This is a well made video for people interested in learning the basics of helicopters.

[@ocayaro]

Moral of the story: a lot can go wrong in helicopter flight.

[@jamesbizs]

No

[@ZamanS.]

You'd never travel in an airplane if you'd know how it works. 😂

[@simplywonderful449]

Actually, a heli is a better craft to be in should you lose power, as they can auto-rotate to nearly any surface. An aircraft like a plane must have a runway surface - flat and long - to roll to a stop, and you don't get much time to choose at all!

[@salhb737tm2]

Kobe

[@909Thumper909]

First time Ive felt smarter after watching a vid today. Thanks!

[@philipmercury8721]

Excellent information, straight to the point. I'm just an retired marine technician and understood this.

[@viktjumper]

Once again I’ve got to say thanks for this amazing tutorial to understanding a turboshaft engine. I am currently studying aircraft maintenance and the content of this video is very handy to have a deeper knowledge of this sort of engine. I’m definitely sharing it with my classmates so they can benefit as well, also I will make the Spanish captions to help them understand it better.

[@moquddasafzal4415]

Thanks!

[@redsquirrelftw]

Wow that's really cool. Seems simpleish, but yet complicated because the precision to make this must be incredible. Like everything from the angle of the fins to the spacing is all carefully calculated. The alloys used etc. Tons of engineering goes into this.

[@nabeelk]

Whoever did the captions in URDU, thank you so much man !

[@krishnakanhaiya7161]

Are you indian

[@nabeelk]

@@krishnakanhaiya7161 no brother. I am pakistani!

[@krishnakanhaiya7161]

@@nabeelk koi nhi, apna hi bhai ho. Hum india se hain. Lucknow (origin of urdu)

[@nabeelk]

@@krishnakanhaiya7161 kiya baat he, bht bht dhannaywad.

[@SKYishow]

Amazing engineering in a very clear demonstration ! Thank you !

[@Shadobanned4life]

This vid is a great place to start if you want a basic explanation of turboshaft engines. It is straight-forward and not needlessly complicated. Good work !

[@patelvidhu4840]

Thanks. Most simple explanation of helicopter engine.

[@tomblanco4106]

Absolutely the best presentation on the subject. Clearly illustrated and explained. Keep up the good work.

[@lucashinch]

This video helped me so much . Thank you . I never was aware of this particularly complex yet simple design. Keep up the great work!

[@justincase5272]

Excellent explanation and graphics!

[@julinization]

Never really thought about how this engine works, wow.

[@creativeworld4237]

Well done brothers clearly discribed and animated video.scientfically very clear.iam waiting for next video

[@jokers7890]

Best explanation of a turbine engine I've seen on KZbin.

[@jmannUSMC]

Thank moment when you realize you actually retained knowledge after spring finals

[@ghall1964]

I couldn't have explained it better myself. This is a simple and to the point video. Well done.

[@JNM11787]

This was so friggin cool and informative

[@mtsambandam9217]

I appreciate your channel's good intentions and the efforts you put in to make evey engineering dummy understand the intricacies. Thank you.

[@ronaldcarson4360]

Finally a video without a robot voice.

[@dillmon1]

Ive been looking for a reasonable schematic of a turbo shaft engine for years, and I finally stumble upon this video. This is some amazing stuff, my mind is blown.

[@engineerist]

I think u are making quite the hell out a job here, way to go buddy :)

[@skanda1832]

Always wondered how helicopter motors work. Absolutely brilliant design. The video production is so helpful. Thank you for the education.

[@HelloKittyFanMan.]

* engines And only some (a few are piston ones).

[@jamesfrench7299]

Very complicated yet inherently reliable I can see.

[@yoduro]

Best explanation I've ever seen. This is youtube at its finest.

[@summerparadiso7130]

Thanks to this video. Now I can build my own engine for my helicopter to fly to work.

[@Pikminiman]

Everything about this channel is truly top-notch.

[@budisukmana5735]

Your animatioooons... very very good, im very excited with your explanation, slowly but easy to understand for regular people like me 👍👍👍

[@rahulsinghyadav5245]

Excellent work being done by Learn Engineering in the engineering education field.I hope that it gets more support.Very precise explanations and with 'why' behind the use of the components explained.This is how things should be explained.Thank you so much for every video you make.

[@thestophewatts6689]

great video, thanks as always. Keep the helicopter theme coming :)

[@Bizzon666]

Great video, I love turboshafts and all other gas turbines.

[@JordanOnlyJordan3524]

Helicopter lore:

[@FlameBlueNova]

I have zero practical use for watching these videos but I find them entertaining.

[@mulunehgetnet4827]

Thank you very much dear friend for your explanation

[@sravankumarp301]

Awesome presentation 👍

[@AFMathandEngineering]

Very informative video! Thanks!

[@deafmusician2]

As a retired A&P (Airframe & Powerplant) mechanic, I can tell you he was not wrong on anything. Looking forward to eyeballing the compressor stall vid.

[@ABaumstumpf]

form turbojet to turboshaft there isn't that much that changes. jet: The combustion-products directly produce the thrust. fan: the energy gets used by a fan to provide thrust. prop: The energy gets first send to a gearbox and then to a propeller. shaft: The energy gets first send to a gearbox and then to a propeller somewhere else. helicopters are basically using turboprops just that the propeller is now facing upwards.

[@dyallbydesign1852]

Thanks for simple yet informative videos. Love your work

[@Lancaster604]

Whoever wrote the script really likes the word SHAFT

[@rahulm962]

As a mechanical engineering student I enjoyed the video . Very Nice

[@kierannurmi5488]

I'm a chemical engineer so I didn't really do mechanics at university. I don't understand how they mounted the hollow shaft so that it could spin independently of the power shaft. How is this achieved? That proportion of air used for cooling is surprising. I wonder what the effect would be upon the engine if we had a material that did not require this level of cooling.

[@donaldstanfield8862]

Kieran Nurmi The two shafts are mounted to the engine casing by separate bearing housings. If you look to the top of comments and follow link to: AgentJayZ he explains turbine engines and shows this in detail

[@viktjumper]

If the engine were built in a material that didn’t require cooling, it would make it staggering efficient regarding fuel consumption. Besides it would mean smaller engines for same torque compared with the existing ones.

[@A_Man_In_His_Van]

@@viktjumper it would be so heavy it would not fly

[@andrewwhite1793]

@@A_Man_In_His_Van The intention is to use the same mass of material, but a material that has not been invented yet with amazing properties to resist the heat.

[@BanglaXplore]

thanks for explaining proffesionally

[@mahekfaldu]

Good work, keep it up 👍 🌟🌟🌟🌟🌟

[@gaspermboya9086]

i like it good performance in this animation good

[@rajeevakash5328]

Well explanation ...👍👍

[@marekvedral6891]

Why are the stator blades mounted at such high angle? Aren't they creating a huge resistance to the hot air?

[@marekvedral6891]

Avaneesh Tiwari Thanks, I thought they are not necessary. Rotor blades are airfoil shaped, so they would not need the hot air to face them at an angle

[@Justwantahover]

It's a case of counterintuitiveness. Yes the stators would hold back airflow but probably not as much as it would appear to. And they are necessary cos it makes the other blades so much more efficient that it more than off-sets the resistance of the stators (resulting in an overall advantage).

[@arslanahmad1195]

Marek Vedral Nice observation. We should see things critically to learn better. I myself am not an expert but I have studied a little and try to explain. The short answer is "the impulse turbine". In a turbine, pressure and velocity are constantly being manipulated to squeeze out as much energy as possible. The stator blades are shaped like nozzles and convert pressure energy to kinetic energy(speed). If you have no resistance you have no nozzle and you can't change pressure energy to kinetic energy. Now that we have kinetic energy we have to absorb it in the blades. The less kinetic energy we leave to the outbound air the better. For that they use the impulse turbine design. It is done by directing the nozzle jet at high angle of attack on the blade. To slow the gases down as much as possible. This way they are able to absorb more energy. Obviously there is much more into that. But that was a simple explanation.

[@WOODR52]

The people that design all of this are simply amazing.

[@ewthmatth]

"compressor stalls can be cause by low air speed" what kinds of conditions, exactly, would cause this in a helicopter? considering that they are all designed to hover ("zero airspeed")

[@gameonyolo1]

Probably low propeller speed.

[@Erik-rp1hi]

Compressor stall means more air going into the engine that it can handle and chokes on that amount. Just like eating to much. You can vent the extra air sucked in at the latter stages of the compressor. Variable stator blades do the same thing.

[@AddyOverbeeke]

Actually, modern aircraft jet engines are turboshaft engines. The turbine sections in modern jet engines drive independently a compressor section and high bypass ratio fan section. The fan is using the developed torque to drive the Fan where over 80% of the engine's thrust is produced. In most recent of designs, P&W has developed the Geared Turbo Fan used in the A320 NEO aircraft and will be the future to aviation powerplants in years to come. The shaft power is used to drive a geared transmission to drive a Fan similar to how a turboshaft engine drives a propeller in aircraft or on ships. Love the channel, Great topic of interest always.

[@izzyplusplusplus1004]

Great video!

[@rvdaero1]

Excellent illustration and animation 👌 👏

[@billygoodman5530]

Deadass clicked on this video and a helicopter flew by my house

[@yaboi1288]

They were coming to show you how the engine works 😂

[@ryanguzzy6599]

Billy Goodman MEE TOOOO!!!!

[@Nekro_bird]

It’d be even more ironic if it had a compressor stall

[@eli7693]

Aliveass, i clicked the video and a helicopter did not fly by my house

[@kennethm.pricejr.8921]

Had not considered the gyroscopic effect and its relation to the helicopter turbine design. Very good video to explain this.

[@publicmail2]

Would be interesting to have a longer video of each that goes into evan more detailed version, easier said then done...Excellent work though.

[@rochester212]

This is WAY more complicated than i expected. Thanks!

[@nikonissinen6772]

1. From where does the fuel come from and how? 2. How is the air fuel mixture ignited and how that works?

[@Totem4285]

Fuel comes from a high flow injector at the base of the flame in their diagram. The air/fuel mixture is first ignited by a large set of what are basically spark plugs when the engine is first turned on. After this the burning fuel/air mixture stays lit in the same manner that a gas lamp does.

[@JayLikesLasers]

I look forward to the video on compressor stall. Thank you!

[@mohsenahmadi1601]

Many factors will cause stall,but there wasn't any explaining for it. To prevent stall there are a bleed valve or bleed band to discharge air outboard and there wasn't any thing about it

[@gascogne3622]

YOU DIDNT HAVE TO CUT ME OFF

[@orbitaljellyfish808]

Finally! Wondered how these work for years

[@jamjestlx]

Awesome!

[@want2seeall]

Very well explained. No over explanation, very well presented info.

[@appwheel1460]

Plz make video of drive panal testing

Awesome video! Thank you for sharing! =)

[@mysticalpotato2110]

great work thank you

[@doinikinsv2385]

Very nice presentation. I now know how turboshaft of helicopter works. Thanks!

[@crackedemerald4930]

2:45 the compressor is spinning backwards

[@TheUtuber999]

No, it's not.

[@jetengine7]

The axial compressor stages are spinning in the right direction, however, the centrifugal compressor is spinning in the wrong direction.

[@Life_n_struggle]

Good job

[@michaelmartinez1345]

This is a great video of how some helicopter Turbo-Shaft engines operate.... Of particular interest, is the use of both, axial and centrifugal flow compressor impellers and how the compressor and powerturbine assemblies turn opposite directions, and the reasons why that is done... Nice animation of the cutaway engine...

[@lysosommike]

0:26 That is wrong. A turbofan engine generates more than 80% of its thrust through the fan. The jets deliver about 20% of thrust....So shaft power is essential for a turbo fan engine

[@donaldstanfield8862]

Finrod Felagund Shaft power is transmitted outside the engine, in an airliner the only shaft power energy drives the accessories, the rest of the energy is thrust.

[@viktjumper]

In turbofan engines N2 or secondary set of turbines are used to move the low pressure stages of the compressor and the fan which its flow is diverted between the nacelle and the compressor’s cowling to provide both cooling and more than 80% of effective trust. This also makes exhaust a key part of the design as the trust is achieved by increasing air kinetic energy at the exit compared with the intake. On the other hand in turboprop and turboshaft engines N2 moves the power shaft that its attached to a gear box in which RPMs are reduced to move a propeller or a rotor in a helicopter.

[@kenethw172]

Learn this in the Army 15B working on the beast is very rewarding although due to injury suffered whiles being an army I could not continue after leaving so to keep up with my skills I have many Electric and gas powered RC helicopter many uses the same gears to work

[@davegeorge7094]

Missing the planetary speed reduction transmission. Turbines MUST spin very fast.

[@ryanbbew4947]

Dave George. 52,000rpms in our jet ranger

[@jeylful]

Awesome video! Already knew all this but loved the CGI!

[@TheFlacker99]

At what RPM are all these components spinning at individually?

[@viktjumper]

TheFlacker99 (Flak) every single engine is different from another, however most turboshaft engines can have the power shaft spinning at nearly + 10000 RPMs. Since the rotor blades have their tangential velocity under the speed of sound due to structural limitations and because of the airfoil principle, a gear box is necessary to reduce the RPMs to an average 310 RPMs which is the most common angular frequency for helicopter rotors.

[@pontiacdriver999]

Depends on the application. Most turboshaft and turboprop engines can have RPMs upwards of 15,000 rpms. As stated before, they are connected to a gearbox to reduce that output. Turbofan and turbojet engines can be over 25,000 rpms and don't require any kind of gearbox. Small model plane turbine engines that are generally centrifugal type jet engines can exeed 100,000 rpms.

[@litufox]

Everytime I watch one of your videos I feel like I've just successfully done and passed a unit in engineering... kudos guys 👊👊👊

[@kylestratman1456]

And where can I buy one

[@tarithgs]

Walmart

[@hyperhektor7733]

Darknet

[@TheUtuber999]

Do you have a few million $ to burn?

[@jobenbarrientos4560]

Great ideas for how turbo shaft engine work putting knowledge and more efficient than the reciprocating engine

[@mohamadrafie3551]

Danke

[@faustin289]

Nice animations. Thanks for the informative video!

[@OTechnology]

The centrifugal compressor is going the wrong way.

[@tyronenelson9124]

I thought that

[@tyronenelson9124]

Its because there are two independent parts

[@izzyplusplusplus1004]

I guess you missed the part where centrifugal effects of angular motion were explained.

[@michaelmooney3369]

It's a 7 stage Axial compressor, and a centrifugal. it's not backwards.

[@michaelmooney3369]

nope

[@pk-iq4jk]

Direct to the point...Nice very nice work

[@fathan2gaming805]

Helicopter Lore

[@chonkychonk]

Helicopterlore ~ I love you brothern

[@ahmadhak9049]

Thanks, good work. A one important tip is the music at the beginning is actually a noise which encounters the speech's clarity.

[@medicalminute4927]

Cool graphics… great explanation. Thank you for explaining the working.

[@BjornFSE]

Interesting

[@matsv201]

Well a TurboFan engine use the turbine to rotate a fan via a shaft. While the turbine engine also produce a bit of Thrust, a majority of it comes from the fan, that goes via the Shaft. So in effect, a TurboFan engine is also a turbo-shaft engine

[@TheFlick175]

I wouldn't say so, because the turbo fan is still directly producing thrust. Power shaft engines function similar to a reciporcating engine in that they drive separate objects via transmission/gearbox. In the helicopter it goes to the transmission that translates the horizontal power to vertical to drive the main rotor.