Weather data source

[Xaver]

Hi,

where does the downloaded weather/wind data come from? X-Plane or directly from external sources?

When using FSGRW, it seems that the weather data is different.
The same applies for Active Sky.

TNX Xaver

 

[Pils]

Direct from real world sources.

[Xaver]

1 hour ago, Pils said:

Direct from real world sources.

Thanks Pils,

so there might be some discrepancies in comparison with the X-Plane weather in which the plane is flying, right?

[Pils]

16 minutes ago, xavers said:

Thanks Pils,

so there might be some discrepancies in comparison with the X-Plane weather in which the plane is flying, right?

Yes. One hopes minor, but going to depend on how the weather addons synthesise their injected weather.

[BlackBird_GR]

That's a very bad approach, at least an option to select real-weather or x-plane should exist.

[DanielR]

The problem is that X-Plane 11 doesn't have a global weather model, just a local weather bubble. Tools like ASXP just update this local bubble all the time. So X-Plane has no clue what weather you have 200NM away from your current position, so aircrafts can't pull that info from X-Plane. I think this is supposed to change in XP12.

Until then, the only option for aircrafts is to pull that data from external sources like real-world Internet-accessible sources, ASXP or... (and that would be my preference) from the SimBrief OFP which contains wind data for every fix in the FPL. So, if the user downloaded a FPL from SimBrief, CL650 already parses the OFP XML anyway, so it has the wind data readily at the fingertips, to use on a subsequent WIND REQ.

By taking the SimBrief-supplied wind data, this would match most closely an actual pilot entering the per-fix wind data from the OFP, just done automatically, which then matches the planned performance and thus fuel data.

Edited February 6, 2022 by DanielR

[BlackBird_GR]

I understand the reasons for this approach and also that this way eliminates compatible issues with 3rd party weather addons, but with this approach eliminates the whole simulator idea, as we can not fly at custom weather for training. But it's Ok for me, if this will change with XP12 in few months.

[ois650]

14 minutes ago, BlackBird_GR said:

I understand the reasons for this approach and also that this way eliminates compatible issues with 3rd party weather addons, but with this approach eliminates the whole simulator idea, as we can not fly at custom weather for training. But it's Ok for me, if this will change with XP12 in few months.

Of course you can fly with custom weather. It's not mandatory to update your wind data in the FMS. 

[Pils]

5 hours ago, DanielR said:

CL650 already parses the OFP XML

This is an incorrect assumption.