VAWTRHS:

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   Vertical wind turbine model.
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   Form:
   [xDot, torque] = VAWTRHS( x, t, d )
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   ------
   Inputs
   ------
   x             (2,1)       [theta;omega]
   t             (1,1)       Time (not used)
   d             (1,1)       Data structure
                             .rho        (1,1) Atmosphere density
                             .alpha0     (1,1) Angle of attack at zero pitch
                             .pitchAngle (1,3) Pitch angles
                             .cD0        (1,1) Drag coefficient
                             .cLAlpha    (1,1) Lift as a function of alpha
                             .K          (1,1) Induced drag factor
                             .angle      (1,3) Angle of blade mount
                             .wind       (3,1) Wind vector
                             .r          (3,3) Blade arms to axis
                             .inr        (1,1) System axial inertia

   -------
   Outputs
   -------
   xDot          (2,1)       d[theta;omega]/dt
   torque        (1,1)       Axial torque

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Children:

Math: Linear/Cross
Math: Linear/Mag
Math: Linear/Unit