62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
#ifndef _PISTONENGINE_HPP
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#define _PISTONENGINE_HPP
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namespace yasim {
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class PistonEngine {
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public:
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// Initializes an engine from known "takeoff" parameters.
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PistonEngine(float power, float spd);
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void setTurboParams(float mul, float maxMP);
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void setDisplacement(float d);
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void setCompression(float c);
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void setThrottle(float throttle);
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void setStarter(bool starter);
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void setMagnetos(int magnetos);
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void setMixture(float mixture);
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void setBoost(float boost); // fraction of turbo-mul used
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// For solver use
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void setRunning(bool r);
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float getMaxPower(); // max sea-level power
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void calc(float pressure, float temp, float speed);
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bool isRunning();
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bool isCranking();
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float getTorque();
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float getFuelFlow();
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float getMP();
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float getEGT();
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private:
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// Static configuration:
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float _power0; // reference power setting
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float _omega0; // " engine speed
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float _rho0; // " manifold air density
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float _f0; // "ideal" fuel flow at P0/omega0
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float _mixCoeff; // fuel flow per omega at full mixture
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float _turbo; // (or super-)charger pressure multiplier
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float _maxMP; // wastegate setting
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float _displacement; // piston stroke volume
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float _compression; // compression ratio (>1)
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// Runtime settables:
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float _throttle;
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bool _starter; // true=engaged, false=disengaged
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int _magnetos; // 0=off, 1=right, 2=left, 3=both
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float _mixture;
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float _boost;
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// Runtime state/output:
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bool _running;
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bool _cranking;
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float _mp;
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float _torque;
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float _fuelFlow;
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float _egt;
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};
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}; // namespace yasim
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#endif // _PISTONENGINE_HPP
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