Airbus Engine Start - The Basics
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- Опубліковано 1 жов 2024
- In this video we look at the basic actions to start the engines in our A320 simulator, in preparation for taxi. First we take a a quick look at the cockpit set-up before moving onto the start sequence, switching and 'flows' required to achieve this. We find the aircraft stationary on taxiway D at Manchester International Airport, EGCC.
Timings:
APU start @1:20
Engine start sequence @3:00
After engine start flows @5:20
Acronyms used in this video:
APU - Auxillary Power Unit
N1 - Low pressure rotor speed (%) - the big one at the front
N2 - High pressure rotor speed (%) - the little one inside
FADEC - Full Authority Digital Engine Control
Trivia:
- For this video our simulator was set up with CFM56 engines. We can also configure it for the V2500 series.
- The CFM56 shares its origins with the same engine that powers the Rockwell B-1 Lancer. Unfortunately the afterbruning system wasn't carried over.
- At 01:15 we state there is another way available for starting the engine. That isn't the complete truth.... engine start can also be achieved using the Crossbleed Engine Start proceedure, should an APU be inoperative for example, or in extremis, airborne via a Windmill Relight.
Interesting Stuff / Further Reading:
- During the automatic engine start sequence the FADEC will automatically abort the start if it detects a hot start (high exhaust gas temperature), a hung start (N1/N2 does not increase above a certain %) or no light up (no light up....). After automatically closing the HP fuel valve, start valve and ignition, the FADEC dry cranks the engine for 30 seconds to clear out fuel vapours. Note: The FADEC does not close the low pressure fuel valve at this stage as it is upstream in the fuel system; it will be closed with the action of switching the engine master to off.
- For the CFM56 the normal start sequence is as follows:
N2 increases - Start valve in line, Bleed pressure indication green, Oil pressure increases.
At 16 % N2 - Indication of the active igniter (A / B or both.......).
At 22 % N2 - Fuel Flow increases
15 s (maximum) after fuel is on - EGT increases & N1 increases
At 50 % N2 - Start valve starts closing. (fully closed between 50 % and 56 % N2). Igniter indication off.
Note:
This video is published for familiarisation purposes with our simulator only and any views expressed within this video are our own. Some calls and checks have been omitted for brevity. Always refer to your company documentation or appropriate flight crew manual as the primary reference.
For bookings, further information and to learn about our simulators visit manchesterfligh...
Simple straight forward at a learning pace explanation....Very impressed.
This info is excellent for sim reference. Thanks a lot for sharing! 🙂
This Aircraft has become my favourite because I have found that this Aircraft tackles turbulence much better than Boeing.Anyway this is my personal opinion
Same bro
Great explanation! Thanks for your time and patience.
You are welcome!
Awsome info. I would really like to train one day in your centre.
Why you don't start fuel pumps?
On what portion does the PTU kick in?
Very useful, Thank you!!
Do you get THE APU alarm bell when doing the fire test from just using battery power alone?
No
Yes , because what give us the alarm is FCW ( flight computer warning ) since the aircraft have electrical supply from batteries 🔋, the alarm’s and lights will go on
Hmmmm!!! 2 answers and one is incorrect.
which is completely unpowered in BATT only (on ground) configuration. you get visual warning only when all you have is DC HOT, DC ESS bus. This configuration is batteries only, no ext, no gens, no apu. Most of the aircraft remains unpowered at this point. Look at the schematics for elec configurations. If this were in FLIGHT-the rat would've deployed. But it's on the ground. different config. in emer elec, you have AC ESS, many more buses powered via EMER GEN. None of that happens on the ground.@@hashemhamed4430
How come you didnt turn the fuel pumps on ?
Thank you for this video!
Bravo, excellent presentation.
Dont you forgot to turn on the auto brakes to Max?
HI, this info is excellent for training purpose.
can i use this video for studying??? (Do not reproduction or/and copying. I’m only using the studying purpose. for my parties)
best regards.
Bear in mind that this is just a brief overview, but of course, no problem!
Thank you so much
How long does an average engine start take? Is it the same always? How does it vary?
When push the Apu test button ecam was no actions
5:03 which bastard is playing Call of Duty in the cockpit again?
😂
wow underrated
Thanks
I had learned something new today ❤
Spoilers armed but autobrakes max not selected :P
That comes in the PM’s taxi flow
Great video. Very helpful
*screams at low resolution on the exterior monitors*
Would it kill them to contact microsoft and use the graphics engine from Flight Sim?!
Actually, we use 3 high resolution wide angle projectors to create an immersive experience - there are no external monitors involved.
What translates onto UA-cam post production isn't always necessarily representative of real life.
@manchesterflightsimcentre ah. I was going to say " if it's a flight sim, having the best visuals out the windows to simulate the craft at altitude is a BIT on the important side I would say, as real life hopefully doesn't look like stuff from the PS2
I still don’t get it
Come and pay us a visit!
What is the engine mode selector crank for?
Essentially to motor the engine without starting it. Like turning the starter motor in your car but with the spark plugs disconnected. This might be used in the event of a tailpipe fire for example, in order to ventilate the engine and remove the remaining fuel.
@@manchesterflightsimcentre oh thank you so much this was really helpful
Madre mía!!!! Que de pasos! Ya se podría automatizar todo esto con un procedimiento en el ordenador que deje ya los motores arrancados y verifique que todos los pasos están ok
Airbus is way better than 737
So unlike the Boeing 737, you can have L&R packs on during startup?
Kind of. The packs are selected on, but once the engine mode selector is set to ignition the pack control valves are automatically closed and reopened during the start sequence.
Apu start off button first then master switch