Hello,

With MSFS 2024-SU4, to learn how to land in crosswinds, I switched to custom weather to "create" crosswinds.

If I leave the wind speed at 0, it remains at 0.

However, as soon as I set a speed higher than 0 (for example, 5) and close the weather window, the wind speed increases progressively and constantly.

Are you experiencing this problem? If so, do you have a solution?

Edited February 23Feb 23 by Area

What do you mean by "increases progressively and constantly" ? 

- Do you mean it keeps rising above 5 knot, and continue to rise, even while in the ground?

- Do you mean that it starts at 0 and then progressively increases as your ground speed increases, aircraft still on ground taxiing or taking off?

MSFS uses a "Filter" that can be enabled in the aircraft configuration files and allows airplane makers to set the normal wind component while on the ground equal to 0 knot, increasing only after a given threshold, in order to overcome defficiencies in the way ground physics are still incorrectly modeled. You can see it in developer mode, by enabling the window that shows various FM parameters.

Edited February 23Feb 23 by jcomm

1 hour ago, jcomm said:

in order to overcome defficiencies in the way ground physics are still inclorrectly modeled. You can see it in developer mode, by enabling the window that shows various FM parameters.

Exactly. Instead of addressing the clear aerodynamic issues, ASOBO focuses on tweaking various elements to hide the flaws in its physics.

1 hour ago, jcomm said:

What do you mean by "increases progressively and constantly" ? 

Please clarify.

To understand the problem, watch the video:

1/ I set the wind speed to 7 knots and close the window,
2/ I open the window, the speed has increased to 13.61 knots,
3/ I open the window, the speed has increased to 26.45 knots,
4/ I open the window, the speed has increased to 51.45 knots,
5/ I open the window, the speed has increased to 77.17 knots.

Video: https://drive.google.com/file/d/1t9WOcr5eRHF8Wl2RYYGbBPQb5FZqPNPp/view?usp=sharing

 

21 minutes ago, Area said:

Please clarify.

To understand the problem, watch the video:

1/ I set the wind speed to 7 knots and close the window,
2/ I open the window, the speed has increased to 13.61 knots,
3/ I open the window, the speed has increased to 26.45 knots,
4/ I open the window, the speed has increased to 51.45 knots,
5/ I open the window, the speed has increased to 77.17 knots.

Video: https://drive.google.com/file/d/1t9WOcr5eRHF8Wl2RYYGbBPQb5FZqPNPp/view?usp=sharing

 

Oops!  That's ** REALLY ** weird - I first thought that was what you were passing, but then my tricky neural net made me divert towards the assumption of what I posted above...

That one in your veido was really unprecedented in my experience with ASOBOZIZED WEATHER values 😕

Out of curiosity, on that place / time IRL what was the reported wind speed?

** and ** : is there any addon, like a weather injector, that might be causing those values?

Is it possible, that although you have selected a custom weather theme, MS is overriding this with real world winds ie a bug

I have to turn off live weather in the setting page before selecting a weather theme, seems to work ?

6 hours ago, Area said:

Hello,

With MSFS 2024-SU4, to learn how to land in crosswinds, I switched to custom weather to "create" crosswinds.

If I leave the wind speed at 0, it remains at 0.

However, as soon as I set a speed higher than 0 (for example, 5) and close the weather window, the wind speed increases progressively and constantly.

Are you experiencing this problem? If so, do you have a solution?

This example highlights ASOBO's misunderstanding of weather phenomena.

They assume wind speed grows exponentially with altitude, but this isn't always true- as shown here. For practicing crosswinds, I recommend clicking the wind controls (the two small indices at the bottom), holding the left mouse button, raising the wind layer to around 10000 ft, and adjusting the wind direction and speed to your preferred values. This ensures the wind remains at your settings up to 10,000 ft. There's another issue with ASOBO, but we won't get into it now. Also, check the valuable information provided by @Space Monkey

Edited February 23Feb 23 by LRBS

5 hours ago, jcomm said:

MSFS uses a "Filter" that can be enabled in the aircraft configuration files and allows airplane makers to set the normal wind component while on the ground equal to 0 knot, increasing only after a given threshold, in order to overcome defficiencies in the way ground physics are still incorrectly modeled. You can see it in developer mode, by enabling the window that shows various FM parameters.

OMG - you've GOT to be kidding me... 😞

PLEASE tell me you're kidding me!

Edited February 23Feb 23 by UrgentSiesta

2 hours ago, Space Monkey said:

Is it possible, that although you have selected a custom weather theme, MS is overriding this with real world winds ie a bug

I have to turn off live weather in the setting page before selecting a weather theme, seems to work ?

This works if you don't change anything.

If, as I intend to do, you enter a wind speed and direction (ground wind or wind altitude) and close the "custom weather" window, the wind will gradually increase.
If you minimize the window (only the line is displayed), the wind won't increase.
I tried disabling real-time weather in Settings > Online, but the problem persists.

If anyone has some time to test this, it would be appreciated.

Note: I don't have any add-ons other than Navigraph.

Edited February 23Feb 23 by Area

@Area, please follow my suggestions,

Start with 1

 

2

and 3

 

and read my previous post, please.

 

@LRBS, For some reason I don't know, I can't display: start 1, 2 and 3.

Sorry

31 minutes ago, Area said:

@LRBS, For some reason I don't know, I can't display: start 1, 2 and 3.

Sorry

But in the movie, at time 0.04, you are at the menu options. Something is not right. Maybe a restart will help? Sometimes glitches occur, and a restart can help. So many odd issues with this software.

3 hours ago, UrgentSiesta said:

OMG - you've GOT to be kidding me... 😞

PLEASE tell me you're kidding me!

It's not uncommon. Most simulators tune down x-wind effects near or on ground, like X-Plane, DCS World, etc...

IL-2 Great Battles doesn't and controlling some of it's aircraft, taildraggers, can teach very realistically the techniques used to taxi taildraggers under strong x-wind situations...

https://www.youtube.com/watch?v=C4-TvPxLioY

In MSFS 2020 there were parameters like:

ground_crosswind_effect_max_speed = X
ground_crosswind_effect_zero_speed = Y

and even later with SU9 (MSFS 2020)

ground_high_speed_steeringwheel_static_friction_scalar
ground_high_speed_otherwheel_static_friction_scalar
ground_crosswind_effect_zero_speed
ground_crosswind_effect_max_speed

which are also used in MSFS 2024.

From the ASOBO documentation for MSFS2024 you can get:

ground_crosswind_effect_max_speed ::=

This parameter represents the world speed (in ft per second) at which 100% of the crosswind effect is applied to the aircraft.

Note that this value can be set to -1000 to have a 100% realistic simulation where the crosswind is never cancelled out.

Default value is 80.

ground_crosswind_effect_zero_speed ::=

 

This parameter represents the world speed (in ft per second) at which 0% of the crosswind effect is applied to the aircraft. This parameter will work in two different ways:

With the ground rudder assistance enabled, at the given speed and below, the lateral (x) component of the wind is set to zero.

With the ground rudder assistance disabled, crosswind is completely cancelled out below ground_crosswind_effect_zero_speed ft per seconds of IAS, and it is gradually blended in up to 100% at ground_crosswind_effect_max_speed ft per seconds of IAS.

Note that this value can be set to -1000 to have a 100% realistic simulation where the crosswind is never cancelled out.

Default value is 5.

 

Edited February 23Feb 23 by jcomm

16 minutes ago, jcomm said:

It's not uncommon. Most simulators tune down x-wind effects near or on ground, like X-Plane, DCS World, etc...

IL-2 Great Battles doesn't and controlling some of it's aircraft, taildraggers, can teach very realistically the techniques used to taxi taildraggers under strong x-wind situations...

https://www.youtube.com/watch?v=C4-TvPxLioY

In MSFS 2020 there were parameters like:

ground_crosswind_effect_max_speed = X
ground_crosswind_effect_zero_speed = Y

and even later with SU9 (MSFS 2020)

ground_high_speed_steeringwheel_static_friction_scalar
ground_high_speed_otherwheel_static_friction_scalar
ground_crosswind_effect_zero_speed
ground_crosswind_effect_max_speed

which are also used in MSFS 2024.

From the ASOBO documentation for MSFS2024 you can get:

ground_crosswind_effect_max_speed ::=

This parameter represents the world speed (in ft per second) at which 100% of the crosswind effect is applied to the aircraft.

Note that this value can be set to -1000 to have a 100% realistic simulation where the crosswind is never cancelled out.

Default value is 80.

ground_crosswind_effect_zero_speed ::=

 

This parameter represents the world speed (in ft per second) at which 0% of the crosswind effect is applied to the aircraft. This parameter will work in two different ways:

With the ground rudder assistance enabled, at the given speed and below, the lateral (x) component of the wind is set to zero.

With the ground rudder assistance disabled, crosswind is completely cancelled out below ground_crosswind_effect_zero_speed ft per seconds of IAS, and it is gradually blended in up to 100% at ground_crosswind_effect_max_speed ft per seconds of IAS.

Note that this value can be set to -1000 to have a 100% realistic simulation where the crosswind is never cancelled out.

Default value is 5.

 

Well, THAT'S disappointing across the board...

And it sounds an awful lot like those 2 above might be playing into LRBS' problems with x-wind weirdness and such...?

How is it that "Realistic" is MINUS 1000(!) and the default is essentially PLUS 1000?!?!?!?! (and what is the upper/max limit?) 😮 

44 minutes ago, UrgentSiesta said:

Well, THAT'S disappointing across the board...

And it sounds an awful lot like those 2 above might be playing into LRBS' problems with x-wind weirdness and such...?

How is it that "Realistic" is MINUS 1000(!) and the default is essentially PLUS 1000?!?!?!?! (and what is the upper/max limit?) 😮 

Well, I am accustomed to it....

In DCS World it's even worst ... or at least not better... All aircraft with even the most sophisticated FMs only start "feeling" the normal wind component as their ground speed get's past a given limit... AEROFLY FS  also limits x-wind near and on ground, ...

Very few flight simulators model it realistically, or at least as realistically as IL-2... and FlightGear :-)