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- เผยแพร่เมื่อ 4 ส.ค. 2024
- A turboshaft engine acts as the powerhouse of modern helicopters. They are also used for power generation and marine propulsion! This video will illustrate the inner-workings of turboshaft engines in a clear and logical way.
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2017: How a helicopter engine works
2021: helicopter lore
*HELIKOPTER KELIKOPTER* KOPTER kopter…
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.
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 - fbr.epp@gmail.com
Cel. +55 11 98728-3993
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.
@@simplywonderful449 You are forgetting that the turbine engine has a slight rpm difference to a piston engine.
Smaller drones with simpler parts would fare much better.
@@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
Helicopter lore:
It amazes me what we humans are capable of creating.
Sometimes I struggle tying my shoes
Good reason why GOD gave us 10 billion brain cells!
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 .
Still not a proper Covid 19 shots!!!
Real rap
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!
What a great set of animations! Top quality production here. Thank you!
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You're welcome
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!
Amazing job! A big salute to people who made this all happen
Moral of the story: a lot can go wrong in helicopter flight.
No
You'd never travel in an airplane if you'd know how it works. 😂
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!
Kobe
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.
John Ratko Sure you did. Sure you did.
John Ratko f
You all are gay
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.
this is really going to guzzle fuel much more than the normal ICE right?
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)
REALLY WOW. when are the tours of your boyhood home?
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..
Yes of course, that's why gas turbine engines aren't used in cars.
Currently studying 4th year of Aeroespace Engineering. My professor recommended us this video. Keep going!
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!
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]
Fantastic Video, from Switzerland greetings RCHELIJET
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.
First time Ive felt smarter after watching a vid today. Thanks!
Excellent information, straight to the point. I'm just an retired marine technician and understood this.
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.
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 !
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.
Amazing engineering in a very clear demonstration ! Thank you !
Excellent explanation and graphics!
I couldn't have explained it better myself. This is a simple and to the point video. Well done.
Thanks. Most simple explanation of helicopter engine.
Absolutely the best presentation on the subject. Clearly illustrated and explained. Keep up the good work.
This was so friggin cool and informative
I appreciate your channel's good intentions and the efforts you put in to make evey engineering dummy understand the intricacies. Thank you.
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.
I think u are making quite the hell out a job here, way to go buddy :)
great video, thanks as always. Keep the helicopter theme coming :)
This video helped me so much . Thank you . I never was aware of this particularly complex yet simple design. Keep up the great work!
Really good stuff! I like the 'near zero net gyroscopic moment'.
Very informative video! Thanks!
Your animatioooons... very very good, im very excited with your explanation, slowly but easy to understand for regular people like me 👍👍👍
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.
The people that design all of this are simply amazing.
Never really thought about how this engine works, wow.
Hi, We are very close to the next milestone. Please support us at www.patreon.com/LearnEngineering . Your support keeps us going !
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!
😊☺☺😊
We use Blender.
Learn Engineering turbine
Learn Engineering I will
Very nice Work.
Everything about this channel is truly top-notch.
Thank moment when you realize you actually retained knowledge after spring finals
great work thank you
Thank you very much dear friend for your explanation
Best explanation I've ever seen. This is youtube at its finest.
Great explanation and video. Thank you.
Well done brothers clearly discribed and animated video.scientfically very clear.iam waiting for next video
Finally a video without a robot voice.
this is amazing +sub
wow, it's shocking how complex and complicated a piston engine is compared to this
Thank you, I have learned something new today, please keep up the great work.
Helicopter Lore
Great video!
OUTSTANDING video, thank you, much appreciated : )
This is WAY more complicated than i expected. Thanks!
Awesome!
Thanks to this video. Now I can build my own engine for my helicopter to fly to work.
Nice animations.
Thanks for the informative video!
Best explanation of a turbine engine I've seen on TH-cam.
Whoever wrote the script really likes the word SHAFT
YOU DIDNT HAVE TO CUT ME OFF
This was brilliantly made, thank you very much
Thanks for simple yet informative videos. Love your work
Very complicated yet inherently reliable I can see.
Good job
Awesome video! Already knew all this but loved the CGI!
Amazing engine animation, very well explained.
Whoever did the captions in URDU, thank you so much man !
Are you indian
@@krishnakanhaiya7161 no brother. I am pakistani!
@@nabeelk koi nhi, apna hi bhai ho. Hum india se hain. Lucknow (origin of urdu)
@@krishnakanhaiya7161 kiya baat he, bht bht dhannaywad.
helicopter lore
First time to know such engine's existence. Thank you
just awsome ...
this is more than worth reading a whole book
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.
Would be interesting to have a longer video of each that goes into evan more detailed version, easier said then done...Excellent work though.
Excellent explanation... Much thanks!
Very nice presentation. I now know how turboshaft of helicopter works. Thanks!
Deadass clicked on this video and a helicopter flew by my house
They were coming to show you how the engine works 😂
Billy Goodman MEE TOOOO!!!!
It’d be even more ironic if it had a compressor stall
Aliveass, i clicked the video and a helicopter did not fly by my house
Good work, keep it up 👍
🌟🌟🌟🌟🌟
i like it good performance in this animation good
Cool graphics… great explanation. Thank you for explaining the working.
Daym! What a great video! Thanks
Danke
Wonderful teaching! Thanks from Texas.
I have zero practical use for watching these videos but I find them entertaining.
Interesting
Plz make video of drive panal testing
Always wondered how helicopter motors work. Absolutely brilliant design. The video production is so helpful. Thank you for the education.
* engines
And only some (a few are piston ones).
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...
1. From where does the fuel come from and how?
2. How is the air fuel mixture ignited and how that works?
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.
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.
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
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.
@@viktjumper it would be so heavy it would not fly
@@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.
Beautiful video. Tnx for the info..❤
Wish this had been around years ago when I got my Rotor Wing License. Great visual !
Lore helicopter
Why are the stator blades mounted at such high angle? Aren't they creating a huge resistance to the hot air?
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
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).
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.
nice graphics & illustrations . Thx
At what RPM are all these components spinning at individually?
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.
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.
"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")
Probably low propeller speed.
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.
Everytime I watch one of your videos I feel like I've just successfully done and passed a unit in engineering... kudos guys 👊👊👊
Great presentation and well researched.
And where can I buy one
Walmart
Darknet
Do you have a few million $ to burn?
Missing the planetary speed reduction transmission. Turbines MUST spin very fast.
Dave George. 52,000rpms in our jet ranger
Wow! So cool! Im definitely a subscriber!
This was cool as heck!
The centrifugal compressor is going the wrong way.
I thought that
Its because there are two independent parts
I guess you missed the part where centrifugal effects of angular motion were explained.
It's a 7 stage Axial compressor, and a centrifugal. it's not backwards.
nope
2:45 the compressor is spinning backwards
No, it's not.
The axial compressor stages are spinning in the right direction, however, the centrifugal compressor is spinning in the wrong direction.