Jon Berndt wrote:
>>>Jon Berndt wrote:
>>>>It's alpha and beta.
>>>>in radians:
>>>>in degrees:
>>Hmm, it appears that these only show the aircraft's angles relative to
>>it's own velocity vector. I also need to sum in the crosswind so that I
>>get the angles relative to the air mass. I know I not getting this
>>because when I land and switch the weather to "thunderstorm" the ribbon
>>doesn't move. Anybody know where I can find the wind angles relative to
>>the aircraft?
> the alpha and beta angles are the angles between the wind vector (either due 
> to the
> aircraft velocity or due to locally generated weather) and the aircraft body 
> axes. If
> there are steady winds from the east (for example) at 10 knots and the 
> aircraft is moving
> _with_ the airmass, the aircraft will see no effect from those winds other 
> than that it
> will have a ground velocity of 10 knots _west_ due to being in the moving 
> airmass. Alpha
> and beta will not reflect that steady velocity, and rightfully so.
> Now, turbulence is another story.
> I guess I'm not quite sure what you are asking for.
> Jon
> _______________________________________________
> Flightgear-devel mailing list
> 2f585eeea02e2c79d7b1d8c4963bae2d
OK, this *does* work, my problem was the way I was testing it.
Apparently the thunderstorm AI doesn't generate real winds. Setting the
boundary layer wind to 10 or 15 kts gives the desired effect while
parked, though it does show that the landing gear needs a little more
damping. Lots of bouncing around, occasionally turtling the glider.
Thanks much.


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