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Strange Wind Shifts

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Hi,
I only have Prepar3d v4 for a few weeks, but I have the following problem.  Sometimes the wind makes strange jumps every second (e.g., from 221 to 231 degrees and back). These shifts will cause the speed tape very erratic and jump around every second. I am using Active Sky as a weather generator, but I notice these jumps also if Active Sky is not loaded.

I made a short video (Active Sky was active in this video), I hope someone has a solution to fix this.

 

https://youtu.be/OrsWvhRrsfk

Bastiaan Meelberg

ATPL - F/O B747-400 [EHAM]
Prepar3d v4 - PMDG B737NGX - Active Sky - Rex Sky Force 3D - Navipraph - FSUIPC
Orbx BASE/Vector/openLC Europe/Trees HD/True Earth Netherlands 

Your video appears to be accelerated.  It certainly is running faster than 1X simulator speed.

Frank Patton
Corsair 5000D Airflow Case; MSI B650 Tomahawk MOB; Ryzen 7 7800 X3D CPU; ASUS RTX 4080 Super; 
NZXT 360mm liquid cooler; Corsair Vengeance 64GB DDR5 4800 MHz RAM; RMX850X Gold PSU;; ASUS VG289 4K 27" Display; Honeycomb Alpha & Bravo, Crosswind 3's w/dampener.  
Former USAF meteorologist & ground weather school instructor. AOPA Member #07379126
                       
"I will never put my name on a product that does not have in it the best that is in me." - John Deere

This is just the way the sim deals with gusts and/or variable winds. I agree the wildly jumping airspeed isn't the most realistic, hopefully it can be smoothed and improved at some point. 

edit, added METAR for reference

METAR EHAM 211325Z 24026G36KT 9999 FEW010 BKN045 12/10 Q0996
           TEMPO 7000 -DZ BKN015=

Edited by BrianW

Brian W

KPAE

  • Author

No 1x sim rate.

(as a check: video is about 17 seconds and I'm descending from 2340' to 2000' = 340' with an average of 1200 f/s.)

Bastiaan Meelberg

ATPL - F/O B747-400 [EHAM]
Prepar3d v4 - PMDG B737NGX - Active Sky - Rex Sky Force 3D - Navipraph - FSUIPC
Orbx BASE/Vector/openLC Europe/Trees HD/True Earth Netherlands 

Happen with more than one aircraft? 

Frank Patton
Corsair 5000D Airflow Case; MSI B650 Tomahawk MOB; Ryzen 7 7800 X3D CPU; ASUS RTX 4080 Super; 
NZXT 360mm liquid cooler; Corsair Vengeance 64GB DDR5 4800 MHz RAM; RMX850X Gold PSU;; ASUS VG289 4K 27" Display; Honeycomb Alpha & Bravo, Crosswind 3's w/dampener.  
Former USAF meteorologist & ground weather school instructor. AOPA Member #07379126
                       
"I will never put my name on a product that does not have in it the best that is in me." - John Deere

  • Author

It looks like it is worse with the PMDG B737, just tried the new Vertx Diamond DA62 (very impressed by this plane btw) and it handles these jumps way better, the speed tape is much smoother. 
Will make some better recordings tomorrow, but it looks the problem is indeed the way Prepar3d deals with gusty winds.

Bastiaan Meelberg

ATPL - F/O B747-400 [EHAM]
Prepar3d v4 - PMDG B737NGX - Active Sky - Rex Sky Force 3D - Navipraph - FSUIPC
Orbx BASE/Vector/openLC Europe/Trees HD/True Earth Netherlands 

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