Merge Aircraft Performance Issue

[Dave Eastwood 1]

Hello,

I think I'm doing something wrong, after I have completed a flight I try to merge the aircraft performance by selecting:

Aircraft - Merge Collected Aircraft Performance

The problem I have is that all the " new values" are zero value.

Could anyone advise what I'm doing wrong please?

Thanks in advance

Dave

[albar965 1,047]

Hi Dave,

hard to say what's wrong. Maybe post a screenshot (https://www.avsim.com/forums/topic/605519-how-to-post-a-screenshot-or-files/)?

Values are reset on LNM restart or manually by clicking LNM menu "Aircraft" -> "Restart Aircraft performance collection".
New values are added while flying.
Watch the tab "Current Performance" in window "Flight Planning" if LNM detects the climb, cruise and descent phases.

Alex

 

[Dave Eastwood 1]

Hello Alex,

After my next flight I will take a screenshot and post.

Just looking at "Restart Aircraft performance collection", after selecting the popup asks to "Reset performance collection and lose all current values". Hypothetically at the end of the flight what would be the reason to merge aircraft performance if a new collection of values?

Thanks

Dave

[albar965 1,047]

41 minutes ago, Dave Eastwood said:

Hypothetically at the end of the flight what would be the reason to merge aircraft performance if a new collection of values?

To refine a performance profile or to adjust it to flying habits (load, cruise level, distance, etc.).

Alex

[Dave Eastwood 1]

Hello Alex,

Apologies for the delay on this.

As you can see from the image, the data on the left side is blank.

As mentioned, at the start of my flight I selected "Reset Aircraft performance collection" and when my flight ended I selected "Merge collected Aircraft Performance".

I'm assuming that is correct?

Dave

[albar965 1,047]

37 minutes ago, Dave Eastwood said:

I'm assuming that is correct?

I guess this is one of the aircraft doctoring the fuel flow to workaround sim limitations.

Do you see actual fuel flow in the aircraft progress tab in LNM?

Alex

[Dave Eastwood 1]

Hi Alex,

It could well be that, let me do a flight again with the Beluga again and I'll check the fuel flow.

Also I'll try a different aircraft such as the Aerosoft A320 and I'll see if the issue is the same as I can't remember now if this was a specific airframe problem all across all the airframes that I fly (getting old is not good on the memory lol).

Dave

[Dave Eastwood 1]

Hi Alex,

Please see the attached three images from my last flight using the Aerosoft A320 professional in P3DV5.

As you can see, for some reason the climb data was not captured.

Does this help?

Dave

[albar965 1,047]

Hi Dave,

I've no idea what can cause this. Never seen this problem. Either there is no fuel flow at all or it is working ok.

Did you see fuel flow in the aircraft progress tab during climb? I mean this here:

 

Alex

[Dave Eastwood 1]

Hi Alex,

I've done a flight with the A319 again but this time no average performances were recorded but there was fuel flow.

So it appears to be an inconsistent problem?

Do you think is it worth doing a fresh re-install of LittleNavMap?

Thanks

Dave

[albar965 1,047]

15 hours ago, Dave Eastwood said:

So it appears to be an inconsistent problem?

No idea, sorry. I've never seen this and I'm at a loss here. The only reports about missing fuel flow are for certain aircraft which report zero all the time. Apart from this is is working reliably here.

15 hours ago, Dave Eastwood said:

Do you think is it worth doing a fresh re-install of LittleNavMap?

Maybe, but I doubt it. Make sure to use the latest when reinstalling: https://albar965.github.io/release/2024/03/31/littlenavmap-stable-306-released.html

If this does not help you can try to reset settings in menu "Tools" -> "Reset all Settings and Restart"

Alex

[albar965 1,047]

You can still fill the performance file manually from cockpit readings and there are also performance profiles for A319 for MSFS and X-Plane: https://www.littlenavmap.org/downloads/Aircraft Performance/

The simulator should not make a difference.

Alex

[Dave Eastwood 1]

No problem Alex, if everything worked then life would be boring lol.

I think I'll try a re-install of littlenavmap 3.0.6 and the A319 and see what happens.

But anyways many thanks for taking your time to look into this for me.

Thanks

Dave