FENIX A320 - Engine Relight

[WavierElf621392]

Hello everyone,

I’ve flown on the default A320, the FBW A320 and i’ve just switched to the Fenix A320 which is a very realistic model and is very well done.

A misclick on my part just recently switched OFF the engine master switch #1.
Since nothing was wrong with it i decided to try and relight it but to no avail.

The procedure i followed is detailed here
A320-Abnormal-Procedures on page 15.

What worked on the FBW or the default A320 NEO just wouldn’t work in the FENIX.
I’m not an expert so it might be something i’m doing wrong. Anyway i’d like your opinion since after a lot of attempts i couldn’t figure it out…
Steps to reproduce :

1. During cruise, switch off engine master switch #1
2. Prepare for a relight :

• Engine mode to IGNITION
• Cross Bleed to OPEN
• Altitude < FL300
• Speed ~300 knots
• APU Bleed (Optional from what i understood)

3. Engine Master Switch #1 to ON

The engine begins to relight but the oil pressure doesn’t exceed 4PSI and at some point i run into what’s pictured below; engine fail due to low oil pressure.

When starting the engine on the ground, the oil pressure grows steadily and eventually gets to a nominal value of around ~40PSI but it seems to fail on cruise engine relight.

Blue skies to you all !

[FloSchulz90]

Did you close the receiving (in your case #1) engine’s bleed valve? At least, on FBW that’s step one, see right arrow (they’re starting #2 engine):

Also, it might’ve been useful to see the Bleed ECAM page.

[WavierElf621392]

Thanks you FloSchulz for the quick answer.

As a matter of fact, i had forgotten this step.
Tried that a minute ago with high hopes but unfortunately the result is the same, here are some more screenshots at the moment when engine number #1 fails during the relight :

Overhead panel, bleed valve for engine #2 is closed :

BLEED ECAM page :

All other ECAM pages appear normal except the ELEC page where GEN1 is OFF.

[FloSchulz90]

Given I don’t have the Fenix, I personally can only do guesswork here and take the FBW docs into account. I managed to do a crossbleed start on that one, nevertheless.
Let’s go through this together (I’ll use FBW procedures and your Screenshots):

• ENG BLEED for receiving engine - off ()
• X BLEED VALVE - open ()
• Verify BLEED ECAM page:
  • Both sides are connected via X BLEED ()
  • Only receiving engine’s valve is closed ()
    • Here seems to be your problem - Engine 2 is also disconnected. Refer to the ECAM screenshot from FBW, again #1 as donor, #2 as the receiver.
      If I had to guess, it could have to do with your APU BLEED being open.
• ENG mode - turn to IGN/START
• if not displayed, open ECAM ENG page.
• Verify receiving ENG IGN Bleed PSI at or above 30 PSI
• Switch ENG MASTER to on, keep Bleed PSI over 25 PSI
  After engine start:
• X BLEED Switch - Set to AUTO
• receiving ENG BLEED - set to ON

[WavierElf621392]

Hello again Flo,

Thanks for the help here !

You were correct in assuming that the APU actually connects the whole, so i gave it a try just now without the APU.

Here’s the Bleed page just before the relight attempt :

Here’s the Engine page just before the relight attempt :

I believe we’re confusing Oil pressure and Air pressure here. The air pressure in the engine seems OK but it’s the low oil pressure that fails the engine in the end.

Again i had no luck in restarting the engine. At this point i contacted FENIX SIM to let them know something was probably wrong.

I’ll keep on trying and if i ever find the solution i’ll get back to you here.

Weird how everything works well on the ground and doesn’t in the air… all parameters look OK

[FloSchulz90]

I just fired up my FBW for a test.
After loading the sim in-flight and stabilizing the controls (not having my joystick with me here, so that was quite painful),

I turned off Engine 1

Step 2 was configuring the overhead panel for crossbleed engine start and checking bleed page.

• close ENG 1 bleed valve, open xbleed valve, and just to be safe, I also switched off PACK 1

with my ECAM looking like that:

Step 3 was that I then turned ENG mode to IGN and fired up the ENG Master Switch again

and after a short while (probably due to high altitude), things started to look as they should:

Step 4: I finally returned the overhead switches back to normal configuration

and resumed flight.

---

again, refer to: https://docs.flybywiresim.com/pilots-corner/advanced-guides/engines/crossbleed-start/

Hope this helps
Flo