On 8/25/2024 at 10:17 AM, sloppysmusic said:

For those having fuel issues I recall reading the following change log a while back. It appears fuel burn /usage is not modeled accurately (at all?) as in the release version you could actually run out of fuel and the plane would keep flying. As in no flame outs. They fixed this particular issue but it put me off buying the ac, instead continuing with my ancient pmdg bird in fsx. 

https://fselite.net/content/tfdi-design-updates-md-11-to-v1-07/

I am suffering from the opposite, too much fuel when landing. I have double checked with a couple of different fuel calculators incl Simbrief and the Block Fuel looks to be about right, but the fuel burn during flight seems off.

Hi MD-11 drivers,

 

FYI...

Another TFDi MD-11 update is available from your downloaded installer. v1.0.19 was released yesterday. Some P3D stuff including working weather radar(Active Sky)  but alas no terrain radar yet for P3D.

8 hours ago, 787flyer said:

I am suffering from the opposite, too much fuel when landing. I have double checked with a couple of different fuel calculators incl Simbrief and the Block Fuel looks to be about right, but the fuel burn during flight seems off.

Actually.. You might be suffering from the SAME.. If you think about it.. Running out of fuel but engines keep running.. Means fuel burn is not being modeled directly at all.. Maybe time based reduction or something else is used to reduce fuel levels. You having too much fuel would mean it's STILL not modeled being burned but the method they use has been bypassed somehow. As in the fuel and engines have no simulated connection with each other? You don't use time acceleration do you? I don't even know if that's a thing just an idea. 

Some things I'd test would be :

Load the plane with ZERO fuel. Or dump the lot on the ramp. Can you start the apu or engines with zero fuel? 

If you can for how long do they run? 

If they WON'T start keep adding 100 pounds to each tank until they do, then watch if fuel levels drop while on ramp. Try both idle and 50 % n2 if your brakes can take it lol! 

I presume the weight of the fuel is modeled OK? As in 100,000lbs of fuel makes the plane heavier by the same amount? 

On 8/31/2024 at 6:22 AM, 787flyer said:

Another TFDi MD-11 update is available from your downloaded installer. v1.0.19 was released yesterday. Some P3D stuff including working weather radar(Active Sky)  but alas no terrain radar yet for P3D.

Thanks for the heads up! Unfortunately, none of the 3 issues I've reported to them (unable to hide yoke, no way to edit fuel in-flight, VRAM exhaustion) has been fixed yet. The last 2 are a deal breaker for me. Back to the hangar😢

Edited September 1, 20241 yr by Luis Hernandez

On 8/24/2024 at 4:34 AM, Luis Hernandez said:

Actually, my idea is not adding fuel inflight, but dumping it after skipping cruise.

Hi Luis, why don't you just dump the fuel before descent? Isn't Fuel dump modeled?

5 minutes ago, pedrotrindade said:

Hi Luis, why don't you just dump the fuel before descent? Isn't Fuel dump modeled?

I'll give it a try tonight. I fear it will be too slow for my needs.

On 8/31/2024 at 8:28 PM, sloppysmusic said:

Actually.. You might be suffering from the SAME.. If you think about it.. Running out of fuel but engines keep running.. Means fuel burn is not being modeled directly at all.. Maybe time based reduction or something else is used to reduce fuel levels. You having too much fuel would mean it's STILL not modeled being burned but the method they use has been bypassed somehow. As in the fuel and engines have no simulated connection with each other? You don't use time acceleration do you? I don't even know if that's a thing just an idea. 

Some things I'd test would be :

Load the plane with ZERO fuel. Or dump the lot on the ramp. Can you start the apu or engines with zero fuel? 

If you can for how long do they run? 

If they WON'T start keep adding 100 pounds to each tank until they do, then watch if fuel levels drop while on ramp. Try both idle and 50 % n2 if your brakes can take it lol! 

I presume the weight of the fuel is modeled OK? As in 100,000lbs of fuel makes the plane heavier by the same amount? 

Thanks for the suggestions Russell. Let em dig a little deeper. Over on their Discord I have read it is a known problem. What the cause is, I dont know.

58 minutes ago, 787flyer said:

Thanks for the suggestions Russell. Let em dig a little deeper. Over on their Discord I have read it is a known problem. What the cause is, I dont know.

Welcome & FYI:

https://www.aircraft-commerce.com/wp-content/uploads/aircraft-commerce-docs1/Aircraft guides/MD-11/ISSUE 47-MD-11 OPS.pdf

 

22 hours ago, sloppysmusic said:

Welcome & FYI:

https://www.aircraft-commerce.com/wp-content/uploads/aircraft-commerce-docs1/Aircraft guides/MD-11/ISSUE 47-MD-11 OPS.pdf

 

Thx for the link.😉

 

In return I will swap you this one. Since the MD-11 in P3D is missing the performance calculator in the EFB (TFDI come on!!!  🙄) , I did find this recommendation of a really nice and I believe accurate MD-11 Flex calculator using Excel. This goes beyond the basic perf calcs Simbrief offers. I have used it several times now and its been really good at calculating the take-off parameters and different flap settings. The calculator was originally designed for PMDG's MD-11 but it works just as well and is applicable to TFDI's version too.

https://library.avsim.net/download.php?DLID=137469

 

40 minutes ago, 787flyer said:

Thx for the link.😉

 

In return I will swap you this one. Since the MD-11 in P3D is missing the performance calculator in the EFB (TFDI come on!!!  🙄) , I did find this recommendation of a really nice and I believe accurate MD-11 Flex calculator using Excel. This goes beyond the basic perf calcs Simbrief offers. I have used it several times now and its been really good at calculating the take-off parameters and different flap settings. The calculator was originally designed for PMDG's MD-11 but it works just as well and is applicable to TFDI's version too.

https://library.avsim.net/download.php?DLID=137469

 

Thanks! I use the pmdg every other day for virtual experience flights from various orbx airports. If I do a from to I get oom crash one airport I don't 😎

At the risk of necroposting ... 

How is the MD-11 now? Have there been any updates since the beginning of September that have reduced or eliminated issues with the P3D version? I'm still considering buying it but won't waste my time if there are still show-stopping problems with it.

3 hours ago, JRMurray said:

At the risk of necroposting ... 

How is the MD-11 now? Have there been any updates since the beginning of September that have reduced or eliminated issues with the P3D version? I'm still considering buying it but won't waste my time if there are still show-stopping problems with it.

Just updated yesterday? Issues many, but they're working it so far.

I would buy it for P3D if it didn't have so many issues as well.

2 hours ago, Zatoichi said:

Issues many, but they're working it so far.

Thanks, Zatoichi. Is it flyable? Any show-stoppers?

Um, only thing I noticed  right away was, get this, engine sounds.