Wind direction reversed 180

[grunf]

So to summarize,

 

• in Mission Editor the numerical values show TO direction, the arrow head obviously points to TO, its tail to FROM
  

 

• Briefing shows TO direction
  

 

• ATC on final gives FROM direction.
  

 

 

Maybe not a bug, but confusing nonetheless.

 

 

 

 

It's not a bug... It's the standard way of reading wind. North-East(Arrow to 045) wind means the wind is COMING from the North-West.

Sir, your wind seems to make a 90 degree turn. :D

[Redglyph]

It's not a bug... It's the standard way of reading wind. North-East(Arrow to 045) wind means the wind is COMING from the North-West.

 

I'm not sure which post you are referring to - or coming from ;).

 

Yes, according to ICAO or meteorology in general, 045 would mean wind coming from the North-East, but that's the point, in the editor (and I think in the briefing) 045 means it's coming from the SW.

 

I'm not sure there's any field in which it's customary to indicate the TO direction, it must simply be a bug in formula used to display the wind angle. It's problably a 2-minute fix, the problem is just that they are not aware of the problem (or I missed any reported thread about that, it's quite old).

Edited January 20, 2018 by Redglyph

[Dan-154C]

:D

 

Well, my friend, maybe some people here are already confused ... If we add more and more confusion we won't be helpful. It's probably a typo, but you mean "the wind going TO North-East (arrow pointing to 045°) is COMING from South-West". With North-West you added an other -90° variable. And this is of course wrong more than the other ones.

 

Cheers,

rob

 

Oh cr@p yes sorry! I meant North-East D:

[Shadow KT]

From what I am reading here, I don't see a bug ...

 

One is navigational wind direction the other is meteorological wing direction.

 

The navigational wind direction is in what direction the wind is blowing. TO WHERE IT IS BLOWING

 

The meteorological wind direction is the navigational direction +/- 180 degrees, meaning the direction from where the wind is coming and vice versa.

 

Airfields use and give the meteorological wind direction.

 

The ME uses navigational wind directions.

 

For example if you have a wind blowing from 270 (W), that's its meteorological direction. Its navigational direction would be 090 (E)

 

P.S:

 

Also when you are using dynamic weather and looking at those flags, the meteorological wind direction is not from the base of the circle, but from the end of the "flag" This can be confusing, as it looks like a small wind sock, being attached at the dot and blown by the wind, so one would think that's its navigational direction, but it is the opposite.

 

Also one small dash is 5 knots, a big dash is 10kt and a triangle is 50kt, although in reality you would get a chart with such flags, but for a given altitude where as in DCS, you don't really know for what altitude those winds are

Edited January 25, 2018 by Shadow KT

[VincentLaw]

I'm not sure there's any field in which it's customary to indicate the TO direction, it must simply be a bug in formula used to display the wind angle. It's problably a 2-minute fix, the problem is just that they are not aware of the problem (or I missed any reported thread about that, it's quite old).

In aeronautical engineering it is common to draw vectors in the TO direction when discussing flows, including wind. No doubt this implementation is the result of DCS being designed by engineers rather than meteorologists.

[Fri13]

The ME direction tool is designed so that the center is the source, line is the heading.

 

So placing unit is center, line is the heading. And this is that some people expect so wind would blow from center to the direction of line.

[Shadow KT]

In aeronautical engineering it is common to draw vectors in the TO direction when discussing flows, including wind. No doubt this implementation is the result of DCS being designed by engineers rather than meteorologists.

 

When calculating the triangle of winds and drift angles you also use navigational wind directions.

 

The ME direction tool is designed so that the center is the source, line is the heading.

 

So placing unit is center, line is the heading. And this is that some people expect so wind would blow from center to the direction of line.

 

Depends on if you are setting up static weather or dynamic, check my post explaining.

[Redglyph]

From what I am reading here, I don't see a bug ...

 

One is navigational wind direction the other is meteorological wing direction.

 

The navigational wind direction is in what direction the wind is blowing. TO WHERE IT IS BLOWING

 

The meteorological wind direction is the navigational direction +/- 180 degrees, meaning the direction from where the wind is coming and vice versa.

 

Airfields use and give the meteorological wind direction.

 

The ME uses navigational wind directions.

 

[...]

 

When we do navigation estimations in aviation, we use the wind speed vector, but we take that from a meteorological service which uses the common FROM convention. You never indicate "wind 045" for a wind coming from the SW, it would be too confusing. On my log I only report the FROM direction of the wind and its magnitude, as given by the tower or by the METAR. If you draw a speed triangle to someone to explain the principle, you will of course use the wind speed vector, but you label it "wind speed" or "wind vector", which is not the same. Wind direction is defined as the direction the wind is coming from.

 

As proof of the confusion, the many threads about this wind direction issue :D

 

Also, as it can be seen in the screenshots I posted in another similar bug report, the weather information given in the briefing is wrong, I doubt anyone would try and argue this one. And starting from there, wouldn't that be best to have the same direction used everwhere, which happens to be the international convention?

 

A good principle in programming is to keep the same convention for parameters, to reduce the risk of error. Designing those missions already has its share of challenges :)

[Boomer_QLD]

Totally agree, it’s consistency that will stop confusion.

Cheers