sc_aero.h

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/* 
 * aero.h
 *
 * Programmers: Mike Paluszek, Eloisa de Castro
 *
 * Copyright (c) 2010-2011, 2021 Princeton Satellite Systems. All rights reserved.
 *
 * Aerodynamic functions. 
 */
 
#ifndef __SC_AERO__
#define __SC_AERO__
 
#ifdef AS_OS_WINDOWS
#include "matrixlib.h"
#else
#include <MatrixLib/MatrixLib.h>
#endif
 
#include <SCControl/sc_constants.h>
 
extern "C++"
{
    
    typedef struct aero_angles_s {
        double alpha;               
        double beta;                
        double alpha_dot;           
        double beta_dot;            
        double v_total;             
        double v_total_dot;         
    } aero_angles_t;
    
    
    typedef struct low_speed_aero_s {
        double length;              
        double oswaldEff;           
        double aspectRatio;         
        double thickness;           
        double s;                   
        double zetaTrans;           
        double cP;                  
        double alpha0;              
        ml_matrix axis;             
        ml_matrix r_surf;           
        ml_matrix q_body_to_hinge;  
     } low_speed_aero_t;
        
    typedef struct suborb_aero_s {
        double s;                   
        ml_matrix axis;             
        ml_matrix r_surf;           
        ml_matrix q_body_to_hinge;  
        } suborb_aero_t;
    
    ml_matrix low_speed_lift_and_drag( double angle, low_speed_aero_t d, const ml_matrix & v, double rho, const ml_matrix & c, double speedOfSound, double kinematicViscosity );
    
    ml_matrix suborb_lift_and_drag( double angle, suborb_aero_t d, const ml_matrix & v, double rho, const ml_matrix & c, double speedOfSound );
        
        ml_matrix simple_lift_and_drag( double v, double k, double cD0, double cLAlpha, double s, double density, double alpha );
    
    ml_matrix lift_and_drag( double v, double rho, double kinematicViscosity, double speedOfSound, double length, double s, double oswaldEff, double aspectRatio, double zetaTrans, double thickness );
    
    aero_angles_t alpha_and_beta( const ml_matrix & v_body, const ml_matrix & v_body_dot );
    
    aero_angles_t alpha_and_beta(const ml_matrix & v_body );
    
    ml_matrix lift_vector( const ml_matrix & v_body );
    
    ml_matrix body_to_wind( double alpha, double beta );
    
    double local_angle_of_attack( double alpha, const ml_matrix & aB, double delta );
    
    double rankine_hugoniot_factor( double gamma, double m, double p_inf );
 
}
 
#endif