AERODYNAMICS values

Sam Heyman <[email protected]> Thu, 12 May 2005 15:19:00 +0200
Newsgroups gmane.games.flightgear.flightmodel
Message-ID <[email protected]>
I am trying to edit the AERODYNAMICS section of the aircraft
configuration file and am having a problem... again!

This is the initial section, that worked:

<AERODYNAMICS>
  <AXIS NAME="LIFT">
    <COEFFICIENT NAME="CLalpha" TYPE="VECTOR">
      Lift_due_to_alpha
      4
      aero/alpha-rad
      aero/qbar-psf|metrics/Sw-sqft
      -0.20 -0.750
       0.00 0.250
       0.23 1.400
       0.60 0.710
    </COEFFICIENT>

This is the one I have created:

<AERODYNAMICS>
  <AXIS NAME="LIFT">
    <COEFFICIENT NAME="CLalpha" TYPE="VECTOR">
      Lift_due_to_alpha
      18
      aero/alpha-rad
      aero/qbar-psf|metrics/Sw-sqft
	-0.052  -0.350
	-0.035  -0.194
	-0.017  -0.109
	 0.00    0.017
	 0.017   0.169
	 0.035   0.314
	 0.052   0.423
	 0.070   0.568
	 0.087   0.67
	 0.105   0.809
	 0.122   0.882
	 0.157   0.95
	 0.192   0.97
	 0.227   0.99
	 0.262   0.96
	 0.297   0.89
	 0.332   0.79
	 0.367   0.680
    </COEFFICIENT>

When I launch the simulator, the loading freezes while loading the
aero data, just after completing the control loads. Is there too much
data for it to handle?

Where are the variables 
    1. aero/alpha-rad
    2. aero/qbar-psf|metrics/Sw-sqft
defined? Do they need to be changed to accept more values?

Thanks a lot!
Sam


-- 
Sam Heyman
Ryds Allé 13.109
58435 Linköping
Sweden
mob: +46(0)730 754 703

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