SolarRadiationPressureModel.h

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/*
Solar Radiation Pressure model header file
 
Author: Sam Matez
*/
/*
Metadata for MS GUI:
imdata = {"displayname" : "Solar Radiation Pressure",
          "exclude" : False,
          "category" : "Environment"
}
aliases = {"S" : "Solar Flux",
           "C_r" : "Coeff. of Reflectivity",
           "A_srp" : "Spacecraft Area",
           "position_body_sun_f" : "Position",
           "v" : "Solar Intensity",
           "srp_force_body_f" : "SRP Force"
}
*/
 
#ifndef MODELS_SOLAR_RADIATION_PRESSURE_MODEL_H 
#define MODELS_SOLAR_RADIATION_PRESSURE_MODEL_H
 
// #include "frames/Body.h"
#include "frames/frameutils.h"
#include "simulation/Model.h"
#include "constants/unitutils.h"
 
namespace warptwin {

    MODEL(SolarRadiationPressureModel)
    public:
        // Model params
        //         NAME                     TYPE                    DEFAULT VALUE
        START_PARAMS
            SIGNAL(S,                       double,                 1361.0)
        END_PARAMS
 
        // Model inputs
        //         NAME                     TYPE                    DEFAULT VALUE
        START_INPUTS
            SIGNAL(C_r,                     double,                 1.0)
            SIGNAL(A_srp,                   double,                 1.0)
            SIGNAL(position_body_sun_f,     CartesianVector3,       CartesianVector3({warpos::AU_TO_METERS, 0.0, 0.0}))
            SIGNAL(v,                       double,                 1.0)
        END_INPUTS
 
        // Model Outputs
        //         NAME                     TYPE                    DEFAULT VALUE
        START_OUTPUTS
            SIGNAL(srp_force_body_f,      CartesianVector3,      CartesianVector3({0.0, 0.0, 0.0}))
        END_OUTPUTS
 
    protected:
        // Execute in protected
        int16 execute() override; 
 
        // Temporary vectors and variables to carry out our calculations
        double _r;
        double _multiplier;
        CartesianVector3 _unitpos_body_sun_f;
    };
 
}
 
#endif