ATR systems - Powerplant part 2 - Gas turbine
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- Опубліковано 22 лип 2024
- This is the second video in a series of four videos about the powerplant used by ATR aircraft. It gives a description of the heart of the engine, the gas turbine.
This video is not meant to give a fully detailed description of the system, but to give you an idea about who it works. Despite my effort to be as exact as possible, I might have made mistakes. If you find errors, please let me know, and I will address the corrections here:
1) The drawings show the turbine blades installed in the wrong direction. When viewed from behind, the HP turbine and the power turbine are rotating clockwise, and the LP turbine is rotating counter-clockwise. Here is a video from the engine manufacturer: • PW127XT engine series:...
2) At 06:30, the location of the ITT sensor is wrong. It is located behind the LP turbine.
3) At 11:02, it's not made clear that a low oil pressure indication from any of the two detectors will trigger a low oil pressure alert.
4) At 21:53, when describing ECU failure, the text in the "ECU" box changes to "EEC." It should be "ECU."
Links and attributions:
Engine part 1, general: • ATR systems - Powerpla...
Engine part 3, propeller: • ATR systems - Powerpla...
Engine part 4, procedures: • ATR systems - Powerpla...
ATR fuel system: • ATR systems - Fuel system
ATR take-off performance: • Aviation explained: Ta...
Engine spark ignitor test: • Turbine engine spark i...
ATSB, ATR clarify ignition settings: www.flightglobal.com/airlines...
Follow Fly with Magnar: / 1140864699685560 - Наука та технологія
Too good an explanation. A lay man like me has become an aeronautical engineer. A good teacher . Salutation to you
This second part is still better than the first one. Congratulations Captain.
Now, when MSFS2020 has released ATR 42/72 these videos for us flight simmers are invaluable! Thank you Mr. Magnar!
Hi Capt location of ITT sensor in PW127M is at T6 which means it’s in between LP turbine and Power Turbine..
Thank you Capt your videos makes my studies easy…Subscribing from INDIA…
Hi, you are absolutely right. My mistake!
Absolutely brilliant work, Captain Magnar!
Hello Magnar, you make great video's! We didn't have this in the past and I think your explanations can be very helpful in understanding the systems. Regards from a high time ( retired) turboprop pilot 🙂.
Excellent, thank you Capt.
Amazing video! Helped me a lot for my college presentation.
Glad it helped!
Must have videos for any budding ATR aviators in MSFS. Understand your aircraft!
Eager of watching the next videos. Great job
God bless you Capt! new subscriber here..
Best explanation of turbine engine!
Thank you fore sharing your acknowledgment!!
Wonderful content. Thankyou
Absolutely wonderful, Capt Magnar
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@Ty Darwin instablaster ;)
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University explanation well done
I think the SP of pressure switch at 13.06 minute is a mistake. Would't it be 250 psi instead of 25?. Te pressure at the combustion chamber is 290 psi
Excellent
Thank you very much!
How the compressor turbine being cooled down?
We run the engine in idle for at least 2 minutes after landing. After shut down, the engine will cool down by radiating heat to the atmosphere. Parking the aircraft into the wind will help.
Hi Capt, When the MAN IGN PB is selected, whether it provides continuous ignition even after NH crossing above 60 %?
If you mean the guarded MAN IGN pushbutton shown on 18:20, then the answer is: You don't use MAN IGN when you have an engine flame out. The engine has automatic ignition when NH drops below 60%, and therefore, you are not required to activate manual ignition. MAN IGN must only be used in specific cases shown in the checklist for EEC fault (18:40).
Il ya une explication ou traduction en français pour bien comprend
Excellent 👏👏👏
Hi, nice and interesting video, Do you know if reducing or increasing ITT temp has any implication on nacelle overheat when you have a tail wind
It's hard to say. When you increase ITT, it's because you increase the power, and this will increase the velocity of the exhaust causing it to move further away from the nacelle. Maybe. It boils down to the exact direction and velocity of the wind, and the residual temperature in the engine when it is shut down.
Thank you Capt !! I really appreciate your response
Waiting for avionics series of ATR 72-600 🙏🙏🙏
They will come, but I cannot promise when.
Tks
Your video is awesome sir, I have One question, there is an 7 bearings, in power shaft which bearing is used, LPC & LPT bearing type, HPC & HPT bearing type.
I'm sorry, but I don't know. An engineer might have the answer.
@@FlywithMagnar ok thank you sir
My doubt is why there is an 2.15 seconds delay in Auto-Featheing on ATPCS sequence
This prevents the propeller from being feathered in case the engine failure happens before V1 and the take off is rejected. This provides drag from the propeller, making it easier to maintain directional control.
@@FlywithMagnar so if propeller is not feathered..my confusion is.. low pitch light will come or not in failed unfeathered engine while rejecting?
Very nice thank you Captain, where are you flying at the moment?
I'm based in Bangkok, but not flying. As long as there are (almost) no tourists coming, there's no job.
Ah that's a pity. Do you instruct at AATC?
No, they have plentiful of instructors, but no customers. Because of Covid-19, Thailand requires 14 days quarantine for all travellers from abroad. That prevents the airline companies from sending their pilots to Bangkok.
Yes, true. We are using Singapore at the moment
Why ATRs does not have auto thrust?
Well, the engines do in fact have automatic power management. It works when the power levers are set in the notch. When the power levers are in other positions, it's the pilot who has control.
@@FlywithMagnar But, can it follow a IAS set point? I do not fully understand how you can set a desired IAS at cruise mode. Thanks for your answer. Congratulation for this nice channel.
Jetliners cruise at a given Mach number in order to maintain separation from traffic ahead and behind. Therefore, they need an autothrottle.
Turboprops don't have this speed limitation. We maintain constant cruise power and IAS is what it gets. Furthermore, IAS depends heavily on the cruise level. We have tables in our Quick Reference Handbook showing which cruise speed we will maintain. For example, to maintain TAS 260 kt, IAS must be 225 kt at 10,000 feet, and 192 kt at 20,000 feet.
do you have an email... iam a resercher ..and i have a hint... would you help me to learnig it more about this engine propeller
Hi, the propeller is described here: ua-cam.com/video/j6W8esX0Z0w/v-deo.html
As a beginner I messed up wih ATR 72/600 and 500. You should not mixed it every time. Thanks