2 hours ago, GSalden said:

Here flying over the Alp going from Amsterdam to Bodrum. This time at 39.000 ft instead of 35.000 ft, but the result is the same :

 

Hopefully SU7 will have it fixed….

SIGMET issued by Rhein Radar reported your were basically flying into an area of SEVERE TURB FL390-430. (and MILANO Radar has issued SEVERE MTW FL100-450 slightly ahead)

Official definition what "severe turbulence" actually means.

Severe

Large, abrupt changes in altitude and/or attitude. Aircraft may be momentarily out of control

In those conditions load factor going from -0.70 to 1.70 in a matter of seconds can be experienced.

If anything I'd say you made it through quite comfortably. You do everything in your power to request different altitude /deviate if you see those SIGMETs.

(Unless you are Gerard and complains on Avsim afterwards 😁)

Edited December 29, 20214 yr by SAS443

From NOAA aviation weather over your flight path...

FIR Id: LIMM
FIR Name: LIMM MILANO
Hazard: MTW - SEV
Begins: 2021-12-29T14:40:00Z
Ends: 2021-12-29T17:40:00Z
Top: 45000 ft
Base: 10000 ft
Move: stationary
Change: NC

---

WSIY31 LIIB 291415
LIMM SIGMET 7 VALID 291440/291740 LIIP-
LIMM MILANO FIR SEV MTW FCST WI N4344 E00738 - N4537 E00802 - N4601
E01219 - N4636 E01231 - N4705 E01209 - N4650 E01030 - N4626 E00820 -
N4545 E00650 - N4501 E00639 - N4413 E00656 - N4344 E00738 FL100/450
STNR NC=

 

To check it further, go to Simbrief map and inject the radar image for weather over that zone and see the winds! Do you use Simbrief weather to plan your flights?

Edited December 29, 20214 yr by Bernard Ducret

44 minutes ago, SAS443 said:

SIGMET issued by Rhein Radar reported your were basically flying into an area of SEVERE TURB FL390-430. (and MILANO Radar has issued SEVERE MTW FL100-450 slightly ahead)

Official definition what "severe turbulence" actually means.

Severe

Large, abrupt changes in altitude and/or attitude. Aircraft may be momentarily out of control

In those conditions load factor going from -0.70 to 1.70 in a matter of seconds can be experienced.

If anything I'd say you made it through quite comfortably. You do everything in your power to request different altitude /deviate if you see those SIGMETs.

(Unless you are Gerard and complains on Avsim afterwards 😁)

Thanks 🙏🏼 

Then today it was correct, but this I experience every time I fly over the Alps, makes no difference what day / what month.

On 12/29/2021 at 5:39 PM, GSalden said:

Then today it was correct, but this I experience every time I fly over the Alps, makes no difference what day / what month.

Then it must be the Prosim integration.

I understand, the prosim software is using the MSFS flight model but it still requires the legacy flight model to be used. And there is a 737 model provided by them which could have flaws when being connected with and controlled by the external Prosim software.

I just say, because flying any thinkable default aircraft over the Alps, I can say with 100% certainty that no consistently wrong turbulences occur in MSFS.

1 hour ago, mrueedi said:

Then it must be the Prosim integration.

I understand, the prosim software is using the MSFS flight model but it still requires the legacy flight model to be used. And there is a 737 model provided by them which could have flaws when being connected with and controlled by the external Prosim software.

I just say, because flying any thinkable default aircraft over the Alps, I can say with 100% certainty that no consistently wrong turbulences occur in MSFS.

Prosim uses the modern flight model inside MSFS. Not the Legacy model….

13 hours ago, GSalden said:

Prosim uses the modern flight model inside MSFS. Not the Legacy model….

This page described it like that:
Does MSFS 2020 fully work in my Boeing 737 Sim? (737diysim.com)

But I guess that changed meanwhile. Anyway, the Prosim integration in the sim is likely to cause the turbulences, as other aircraft don't have the issue.

There is just a script running over the mountains that confuses the wind. This happens everywhere in the mountains.It has nothing to do with real weather

1 hour ago, donux said:

There is just a script running over the mountains that confuses the wind. This happens everywhere in the mountains.It has nothing to do with real weather

Can you provide evidence of this (e.g. Dev notes, chat, etc. or actual "script" code or thread execution viewed using debugging tools, etc.)?  This would be an interesting point to raise with dev team re: weather, flight dynamics, gliding / soaring introduction etc. if it were true.  Having flown over the Alps and Rockies since Alpha I don't see evidence of this but perhaps the randomization etc. is just very good.  My experience has been that weather and terrain "appear" to combine to form variable wind dynamics but perhaps this is not the case.  Regardless, more evidence less conjecture would be nice.

2 hours ago, mrueedi said:

Anyway, the Prosim integration in the sim is likely to cause the turbulences

This is anyway a very bad time of the year to evaluate turbulences since winds aloft are strong to very strong at times over the Alps during winter time like these recent days. Once again this has very little - if anything - to do with wrong simulation and everything with individual perception, perhaps lack of experience over mountainous terrain in general whether in commercial or GA airplanes in real world IN WINTER. Why not revisit this topic sometimes in May or June, then we will see if what has been mentioned above has any valid ground or not and if Asobo need to "soften" the turbulences of MSFS, most likely not.

Until then...Happy New Year to all!

Edited December 31, 20214 yr by Bernard Ducret

1 hour ago, badgenes said:

Can you provide evidence of this (e.g. Dev notes, chat, etc. or actual "script" code or thread execution viewed using debugging tools, etc.)?  This would be an interesting point to raise with dev team re: weather, flight dynamics, gliding / soaring introduction etc. if it were true.  Having flown over the Alps and Rockies since Alpha I don't see evidence of this but perhaps the randomization etc. is just very good.  My experience has been that weather and terrain "appear" to combine to form variable wind dynamics but perhaps this is not the case.  Regardless, more evidence less conjecture would be nice.

Disable real weather put clear skys and fly them over the Alps.

You will see what happens

2 hours ago, donux said:

Disable real weather put clear skys and fly them over the Alps.

You will see what happens

I will try this at my earliest opportunity and compare with live weather enabled.  I will say that my assumption would be that there must always be part of the weather engine generating winds, atmospheric currents, up/down drafts etc. based on the weather at that time and the underlying terrain (parts of the earth retain heat, features disrupt wind etc. etc.).  Given that "Clear Skies" does not equate to "absence of weather and atmosphere" I would expect turbulence and all other atmospheric phenomena to exist albeit with totally different characteristics than any other weather conditions.  So if these effects are different then it stands to reason that the engine is doing its best (GIGO of course being a factor) as written to interpolate the minutiae from the general conditions.   If differing weather conditions do not result in differing output as discussed then yes it would seem to indicate canned behavior as opposed to simulated.