Wrong IAS in windy conditions!

[CoBlue]

When facing straight on an 20m/s (= 40kts=72km/h) headwind the IAS (Indicated Airspeed) isn't correct!

It shows 0 why?

[Random]

on the ground?

 

Nose is up in the air meaning the pitot isnt facing into wind.

[Anatoli-Kagari9]

Just like IRL.... ASI's become alive latter, and yes, the dynamic intake of the pitot is at a high angle to the relative wind...

 

But give it a try, and test a much more important feature modeled in DCS... With such a wind, adjust your aileron trim and see the ailerons ( and the stick ) actually move, because the wind is active on their surfaces and the trim tab already effective! Lower the wind, and adjusting the aileron trim will have no effect :-) - Details!

[CoBlue]

on the ground?

Nose is up in the air meaning the pitot isnt facing into wind.

 

Yes on ground standing still, facing the wind head on.

But the IAS is working when you do a 3 point landing or in a take-off roll....exactly the same attitude as standing still!

 

Just like IRL.... ASI's become alive latter, and yes, the dynamic intake of the pitot is at a high angle to the relative wind...

.

 

So at what minimum speed does the IAS become reliable in a P-51? couldn't find anything in the manual.

[iFoxRomeo]

The Stang´s airspeed indicator starts with 50mph, that´s ~43kts. Below that value you have unreliable indication.

With the nose up/high angle to the wind the ASI gets only a part of the dynamic pressure and therefore it won´t show correct values. Yet it does show some life in the ASI as the needle is above 0mph but below 50mph at 40kts wind. I´d say there is no problem here.

 

 

Fox