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P3D v4 Crosswind vs yaw moment

J

jeehell

Messages
43
Country
france
Hello everyone,

I am struggling with some weird issues. It happens from FSx to p3d v5.
It seems that crosswind has unpredictable effect on the yaw rotation of the aircraft. Sometimes, with 50kts x-wind, no rudder is required until 120kts or more. Sometimes with the same settings it is impossible to keep runway centerline.

What are the yaw moment derivatives I need to work on here? Anything in particular with ground handling/x-wind?
 
It seems P3D V4.5 (not sure about other versions) has some internal maximum surface wind limit at 31kts. Above that, wind "overflows" and goes back to a small value until liftoff.
Very weird???
 
Suppose you are on an approach at 120 kts and there is a 30 kt crosswind. You will have about 15 degrees of drift, which needs to be kicked off just before touchdown. This is not easy and if you fail to kick it off you will most likely ground loop or break something. For this reason there are few airplanes that are cleared to land or take off with more than 30 knots crosswind component.
In P3DV4 you can set the wind at the surface through World/Weather/user defined/customize wind speed with choices of:
None, Light 8 kts, Moderate 16 kts, Heavy 24 kts and Severe 36 Kts. You can the set the wind direction to give you the crosswind effect you want.
Roy
 
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