src/Instrumentation/vertical_speed_indicator.hxx

   1 // vertical_speed_indicator.hxx - a regular VSI tied to the static port.
   2 // Written by David Megginson, started 2002.
   3 //
   4 // Last change by E. van den Berg, 17.02.1013
   5 //
   6 // This file is in the Public Domain and comes with no warranty.
   7
   8
   9 #ifndef __INSTRUMENTS_VERTICAL_SPEED_INDICATOR_HXX
  10 #define __INSTRUMENTS_VERTICAL_SPEED_INDICATOR_HXX 1
  11
  12 #ifndef __cplusplus
  13 # error This library requires C++
  14 #endif
  15
  16 #include <simgear/props/props.hxx>
  17 #include <simgear/structure/subsystem_mgr.hxx>
  18
  19
  20 /**
  21  * Model a non-instantaneous VSI tied to the static port.
  22  *
  23  * Input properties:
  24  *
  25  * /instrumentation/"name"/serviceable
  26  * "static_port"/pressure-inhg
  27  *
  28  * Output properties:
  29  *
  30  * /instrumentation/"name"/indicated-speed-fpm
  31  * /instrumentation/"name"/indicated-speed-mps
  32  * /instrumentation/"name"/indicated-speed-kts
  33  */
  34 class VerticalSpeedIndicator : public SGSubsystem
  35 {
  36
  37 public:
  38
  39     VerticalSpeedIndicator ( SGPropertyNode *node );
  40     virtual ~VerticalSpeedIndicator ();
  41
  42     virtual void init ();
  43     virtual void reinit ();
  44     virtual void update (double dt);
  45
  46 private:
  47
  48     double _casing_pressure_Pa;
  49     double _casing_airmass_kg;
  50     double _casing_density_kgpm3;
  51     double _orifice_massflow_kgps;
  52
  53     std::string _name;
  54     int _num;
  55     std::string _static_pressure;
  56     std::string _static_temperature;
  57
  58     SGPropertyNode_ptr _serviceable_node;
  59     SGPropertyNode_ptr _pressure_node;
  60     SGPropertyNode_ptr _temperature_node;
  61     SGPropertyNode_ptr _speed_fpm_node;
  62     SGPropertyNode_ptr _speed_mps_node;
  63     SGPropertyNode_ptr _speed_kts_node;
  64     SGPropertyNode_ptr _speed_up_node;
  65
  66 };
  67
  68 #endif // __INSTRUMENTS_VERTICAL_SPEED_INDICATOR_HXX