7e6bc192ba
"This altimetry method is valid to above 100,000 feet, and correctly handles Kollsman settings"
60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
// altimeter.hxx - an altimeter tied to the static port.
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// Written by David Megginson, started 2002.
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// Updated by John Denker to match changes in altimeter.cxx in 2007
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//
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// This file is in the Public Domain and comes with no warranty.
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#ifndef __INSTRUMENTS_ALTIMETER_HXX
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#define __INSTRUMENTS_ALTIMETER_HXX 1
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#include <simgear/props/props.hxx>
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#include <simgear/structure/subsystem_mgr.hxx>
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#include <Environment/atmosphere.hxx>
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/**
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* Model a barometric altimeter tied to the static port.
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*
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* Input properties:
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*
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* /instrumentation/<name>/serviceable
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* /instrumentation/<name>/setting-inhg
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* <static_pressure>
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*
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* Output properties:
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*
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* /instrumentation/<name>/indicated-altitude-ft
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*/
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class Altimeter : public SGSubsystem
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{
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public:
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Altimeter (SGPropertyNode *node, double quantum = 0);
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virtual ~Altimeter ();
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virtual void init ();
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virtual void update (double dt);
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private:
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string _name;
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int _num;
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string _static_pressure;
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double _tau;
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double _quantum;
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double _kollsman;
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double raw_PA;
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SGPropertyNode_ptr _serviceable_node;
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SGPropertyNode_ptr _setting_node;
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SGPropertyNode_ptr _pressure_node;
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SGPropertyNode_ptr _press_alt_node;
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SGPropertyNode_ptr _mode_c_node;
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SGPropertyNode_ptr _altitude_node;
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FGAltimeter _altimeter;
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};
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#endif // __INSTRUMENTS_ALTIMETER_HXX
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