+ virtual void set_turbulence_magnitude_norm (double t);
+ virtual void set_turbulence_rate_hz (double t);
+
+ virtual double get_elevation_ft () const;
+ virtual void set_elevation_ft (double elevation_ft);
+ virtual void set_altitude_half_to_sun_m (double alt);
+ virtual void set_altitude_tropo_top_m (double alt);
+
+ virtual bool set_live_update(bool live_update);