How Jet Engines Work | Part 2 : Outputs
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- Опубликовано: 17 июн 2024
- Aircraft: Boeing 777-300ER
Engine: Turbofan | GE90-115B
Aircraft systems explained.
* Introduction to engine thrust control.
* Engine electrical power generation.
* Aircraft electrical load management system.
* Integrated drive generator failure protection.
* Left engine hydraulic power supply and utilization.
* Engine bleed air supply and utilization.
* Engine anti-ice system.
Major components covered.
* Thrust lever, electronic engine control, hydro mechanical unit, combustion chamber.
* Electrical buses, APU generator, galley equipment, passenger entertainment system.
* Integrated drive generator (constant speed drive and AC generator), backup generator, variable speed constant frequency converter.
* Hydraulic reservoir and engine driven hydraulic pump.
* left engine thrust reverser, ailerons, flaperon, flight spoilers, elevators and rudder.
* Air supply cabin pressure control computer, APU bleed valve and electro-pneumatic controllers.
* pressure regulating and shutoff valve, high pressure shutoff valve, fan air modulating valve and pre-cooler.
* air conditioning packs, wing anti-ice, air driven hydraulic pump, aft and bulk cargo heaters.
* Ice detector probes, engine anti-ice computer, engine anti-ice valve and engine inlet cowl.
Software's used for making the video.
* Blender 2.93 and Filmora 10.
Background music used in the video.
* Go big or go home (Filmora stock library). 
Наука
I'm a diesel mechanic. Have been for 15 years and always wondered how turbine engines work and how the compressors did their job and the stages of them. This really helped.
If you want to know more about jet engines? You want to check out Aircraft Science - this will give you an insight on how jet engines are built, tested and how they are "Started"
There's two kinds of jet engines
Airlines
Fighter jets
I'm taking diesel mechanics
Do you remember basic theory of the steam engine?
Also jet engines are different from diesel engines and a different application. Similar
Diesels do require that fuel have to be primed before starting especially for locomotives. Just like for lawn motors (gasoline) have to be primed too prior to starting.
But in jet engines uses duel ( JP) which can be JP-20, JP-30 up
Fuel still have to go a fuel filter before the fuel pump to strain out any particles .
I want share if you already about the turbocharger and the Exhaust Gas Recirculation and it's blowers
Turbocharger also has a frequency.
Still I didn't get completely
Part 1 helped me to pass aircraft general knowledge course in atpl exams, great animation and narrative, helped me a lot, thank you so much for the video and appreciated.
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😅
In case anyone wants to know how the generator stays at constant rpm, the 'constant speed drive' has a hydraulic pump powered by the engine G/B which powers a 'swash plate' piston engine (like your car's AC pump). As N2 speed changes the hydraulic pump increases flow/pressure, causing the angle of the swash plate to change, keeping the output at a constant rpm.
wow tenk yu i was just wondering that
Interesting design choice vs. an electronic solution as used for the backup alternator.
This is so helpful. I'm a visual learner, and reading or seeing just some pictures alone don't really do the trick for me. These videos are a good visual representation of the procedures order for jet engine operation. Thanks a lot!
Glad it was helpful!
This is an absolutely great detailed video. Highly recommend for anyone interested in jet engine operation of airliners as the Boeing -777.
Thank you very much!!
My pleasure!
Awe inspiring and detailed! Much appreciated for the video!
Amazing explaination with amazing animation. Easy to understand
Sir, you are simply awsome. Can't stop to praise you. Your animations helped me a lot to understand. Thank you
What an insanely detailed and well drafted video by Aircraft Science, nothing much to say about the video, simply put, ABSOLUTELY INSPIRING! ✈️🌟
Sono un meccanico italiano,e devo dire che la grafica e ottima e molto chiara e intuitiva,bravi!!
It's marvellous how engines are made
Awesome videos, and the music wow. I'm a mechanical engineering student and am always fascinated by evolution of technology. Watching this video made me realize that its a wonder how humanity has achieved so much and continues to push further. So many components, so much complexity and prone to failures, and making it all work at once! And you showing it all beautifully with an exciting music. Thank you for your work. Subscribed.
part 1 and 2 helped me a lot thanks a lot
The animation is really awesome.. Please make more video on GE 90 and B-777 aircraft.
What an amazing aircraft. But what an even more amazing animation and explanation. Wish I had something like this for my own aircraft (ATR). Great work man.
Glad you enjoyed it!
This series has saved me so much time from reading my Boeing 777 owner's manual
I have flown aircrafts in simulator and I also know technical details about how systems works but always wondered to learn in depth and in your video you just blown my mind and you have satisfied my knowledge crave. Hats off to you man❤
Great to hear!
Great job, thanks!
As an turbine engine repairman for helicopter and fixed wing prop aircraft... I'm addicted to this.
Amazing visuals well done
This is really helpful and awesome video
Excellent video and tutorial. 👍
Very informative video, nice work👍
Awesome , many thanks 👏👏
Thanks thanks thanks for these masterpiece
This is brilliant!!! How good are the people who design, manufacture,and service these incredible pieces of technology??!! This is mind blowing!! Strewth, how complex must the systems be in UAP/UFO/whatever the new acronym type vehicles?!
EXELLENTEXCELLENT PRESENTATION IN DETAIL.
Bleed air comes from the 9th stage at idle (50% N2), switching to the 4th stage at cruise (100% N2). FAA regs require bleed air to stay below 450F (auto ignition temp of fuel) so it's always run thru the intercooler, cooled by fan air.
Awesome job!!!!
Super bro exilanted 👌👌
Very good.
Thank you.
now I can finally operate my jet engine before going to sleep
Excellent!
This is very helpful
WONDERFUL 💫
Excellent video
At time 1:41 there is an ERROR. The aircraft electrical systems don't work at 415 Hz. They work at 400 Hz. Probably the creator of this video mixed the "15" from the voltage of the 3-phase electrical system which is 115 Volts phase to neutral, whis is 200 Volts phase to phase.
I was wondering about that; 400 Hz being the standard for air/sea "shore" power, I would figure most external power units would never be able to sync if that was the case.
@@eddievhfan1984 The external ground power units are designed to provide 115V/400V 3-phase 400Hz 75kVA. There is no need to "SYNC". The aircraft switched either to external power OR internal power. The sychronization of the 400Hz power is only performed when the two generators from engine #1 and engine #2 are switched to parallel mode.
@@sorgfaeltig I was aware of that; what I meant was that if the IDGs ran off of 415 Hz (as claimed by the video) instead of 400, then when external power was provided to the aircraft, the GPU would simply trip its breakers due to not being frequency-synchronized; essentially a proof by contradiction/absurdity. And in any case, my understanding was that external power is paralleled with the other sources on the bus for load-sharing to minimize stress on equipment when transferring between sources, as opposed to a hard switch.
Thanks for you information, congratulations.
Our pleasure!
I really want to know the background melodies you have used, it makes the whole video and animation feel epic and majestic! This series is by far one of the best found in RUclips and the channel has much potential. I hope success is always with you, keep up the good work!
"Go big or go home" is the title of the background track. It's available in the Wondershare Filmora audio library.
@@AircraftScienceThank you very much, I hope to see more of your fine work!
this video is gold！
Thanks for sharing. I waiting for B787 Gnx 1B Engine opetation impatiently
This is alien tech….no joke
Thank you very much
It's very useful video....
Thank you.
This video is very cool
Usually there are 2 stages of pneumatic bleed air. The lower stage, lower temp/pressure is used to climate control and keeping the plane pressurized. The higher stage of compression uses high temp/pressure bleed air only for anti-ice systems.
Damn youre so good, love it👍🏻👍🏻. Can you also make for boeing 737?
Thanks for the suggestion. Will consider it after I'm done with the B777 series.
SUNGGUH SANGAT MENAKJUBKAN .
Amazing🤘🤘🤘🤘
Lovely
Buen video
Nice👌👌👌
"A bad weather condition" is exactly the same thing as "bad weather", but requires more words to say and hear.
Good
Your video is amazing and very beneficial for everyone who wants to learn engine and aircraft. Which program do you use to visualize aircraft’s engine ? I want your permission to download your videos.
The animation was done using the blender software. You can download the videos for educational purposes.
Great video, just to mention that the IDG output is 400hz and not 415hz.
Yes, 400 Hz, three-phase AC.
I'm so excited to see your next video, Do you have any other channels I can follow your progress?
.
Love you😍😍😍
Hi, this is the only channel I have.
@@AircraftScience Facebook, IG, twitter, etc.
Currently I have nothing on the platforms you mentioned. Will let you know if I come up with something.
@@AircraftScience OK^^
My question is how does the constant speed drive, drive at constant speed? Is it using something like an automatic transmission with a planetary gear set?
Also you said the electrical systems needs two sources to run everything, but I've seen the apu alone run everything, for example during pushback before engine starting
Hello. I am an electrical engineer and work on turbo compressors. I watched part 1 and 2 of your video with great interest. These are best 2 videos on jet engines, I have ever seen.
One question about electric generator attached to the engine. Why this is designed on frequency of 415 Hz. ? I have never heard of 415 Hz frequency. It is most commonly 50 Hz in Asia and Europe and 60Hz in America and Canada. What are the voltage then?
Hi, I've made an error in the video; the frequency is 400 Hz. Airplanes use 115 volts, 400 Hz power because it reduces their total weight.
The higher frequency reduces the size of electrical components (transformers, generators, and motors).
@@AircraftScience Thanks very much. That is great information foe me.
@@traveladventuresandfoods.6195 My pleasure!
Part 1 is a perfect video to start a 777 in cold and dark
please have request to make videos on B777 ATA 31 and ATA 45. Thanks
Please do more
Will do!
Better make sure you don't shut down the right engine incase the left engine has a bird strike, or else its a 70 ton glider
ผมรู้วิธีการจุดระเบิดจากเครื่องยนต์เครื่องยนต์ แล้วครับ ครูไม่ต้องไปปรับเปลี่ยนอะไรเลยครับแค่สร้างที่ครอบยื่นออกมาแล้วก็สร้างที่ปิดเปิดเหมือนช่องระบายอากาศ วิธีการนี้วิธีเดียวครับที่จะทำให้ จุดระเบิดจากเครื่อง ยนต์เจ็ท ได้ครับ
Can someone please explain how the air from the high pressure compressor is hot enough for the anti icing system ? It collected from before the combustion chamber
*At **6:00** - the engine starts powering the pneumatic actuators and the background music changes.*
“Your going to obey me” are you kidding me
What’s the temperature inside the combustion chambers at max power? How it walls doesn’t melt? Anything to cool its walls? What are the fuel injectors made of?
Hot. Like, hot enough to melt steel, with some margin. But! That's only for the core. The combustion chamber is in two parts, the outer one is airtight but the inner one, where the flame is, is perforated to have a layer of fresh air between the wall and the flame, and to keep supplying more air to mix with the unburnt gasses.
*Can* be made of some steels, though I believe it's usually a titanium alloy
All good questions. I've wondered the temp difference of that against a diesel engine under boost.
It's also worth mentioning that for control of engine temperature, the fuel/air mixture is significantly leaner than that found in internal combustion engines, as running a jet engine at its most optimal stoichiometric (full-burning) ratio generates enough heat to melt the engine. So there's a lot of excess air on hand to provide cooling.
1:10 What is the name of the background song? I liked it a lot and it fits a lot with the video...
The background music is called Go big or go home, it's from the Filmora stock library.
Thank you🙂
Yeah that's right
Please make the same video B787
if the right engine is also producing power then the right bus will be getting power from the IDG mounted on right engine instead from APU. am i correct?
Yes!
Very beautiful sweet
How engine combustion blades are cooled
If this was a class i would fail
Now I understand why jet engines are covered in “spaghetti” pipes.
Đâu phải là phi công giỏi nhất là có thể hiểu biết được hết tất cả đâu nhìn thấy cũng chưa chắc đã hiểu biết được để rồi nói là bộ phận máy cũng chưa chắc đã rành
115 V 400 Hz
Not 415 Hz...
Something thrusts the veins which in turn
Similar to Energy Bleeding
what choosing 415 hertz power supply ? why specifily 415 hertz ?
easier to filter ?
A higher frequency (415 Hz) helps reduce the weight of heavy electrical components on the aircraft.
Mi too
Các em nghĩ là cái gì chứ là những quả bit tong nổ và sả lực đẩy mạnh và những cánh quạt nó quay
What softwares do you use sir
Blender for animation and Filmora for video editing.
What software u used?
Blender.
I got a idea try a prop.
Thank you good video! The music is distracting.
👍👍👍👍👌👌👌👌🤝🤝
1:10 What music?
Go Big Or Go Home (by Filmora)
👍👍🎈🎈😁😁😀
Good luck to you young folks going for you're a&p license ' just study twice as hard as you think you need to that's what I did and you will pass you're pas you're exams with ease ' my boss said about my license remember it's a license to learn ! You will never know it all be safe and when jn doubt get help !
Isn't the 415 figure voltage, and not hz?
The aircraft power systems operate at 115V and 400Hz.
Nhìn thấy cũng phải hiểu rõ ràng và phải biết cách làm việc chứ không phải nhìn thấy cái nói lung tung
Does anyone know what music this is?
Go big or go home (Filmora stock library).
can someone pls help me elaborate more about the numbers on n1 and n2? what is it indicate for? rpm? thanks
Yeah percentage of maximum RPM
N1 corresponds to the inlet fan and N2 is the rear compressor. Engine industries use terminologies to isolate areas within the engine, usually called stations, for example the front of the engine is station one, as in N1. N2 compressor is in station two. Station numbers increase moving aft, it's helpful when identifying and translating specific locations in the engine for maintenance and troubleshooting. Bore scoping the engine is a good example. A good ballpark for rpm is multiply raw rpm by 100 for N1 speed and multiply N2 by 150. For example, if the engine is idling at 65% rpm N1 speed will be 6500 rpm. Percent rpm is a practical method of gauging engine speed/rpm and an industry standard.
Why is it 415Hz instead of 400Hz?
That was an error.
Hi
Why 415Hz?? Did you mean to say 415 volts? Because if it was a 415Hz generator, it would need to go through a ac-dc-ac transformer in order to power cabin entertainment, due to the fact that all outlets are 50/60Hz
Yes, the generator gives 415 Hz output. An in-seat power supply (ISPS) converter changes 415 Hz to 60 Hz for the power outlets.
@@AircraftScience why does it supply 415Hz? Are you aware of any specific reason it can’t just be a regular 50Hz or 60Hz generator?
A higher frequency (415 Hz) helps reduce the weight of heavy electrical components on the aircraft.
@@AircraftScience ohhh that’s super cool!
@@AircraftScience NO, the generator does NOT give 415 Hz output. It gives 400 Hz output. The outlets for the passengers are only a minor unimportant part in the entirety of the electrical aircraft system. It is an on-essential system that has its own converter to convert the 115V 400Hz power via rectifiers and converters to "household devices-compatible" 115V/60Hz or 230V/50Hz
But what makes the engine start to rotate?
Please watch the first installment in the series to learn how the engine starts.
Here is the link: ruclips.net/video/AdCcbBhondA/видео.html