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RHSCubeSat:

Path: CubeSat/Simulation

% Right-hand-side for a CubeSat orbit and attitude dynamical model.

 Includes drag and optical surface disturbances, magnetic dipole,
 gravity gradient, rigid body dynamics and power. Uses the J70
 atmosphere model and applies a point-mass gravity model. Computes sun
 location with SunV1 and accounts for eclipses from the Earth. The
 surface parameters in surfData are passed to both the optical and
 aerodynamic disturbance model functions.

 The states are [position;velocity;quaternion;angular velocity; battery charge].
 The battery charge must always be the last state. Its units are J. If there
 are wheel states they must be between the spacecraft angular velocity and the
 battery charge, and the indices be logged in kWheels.

 Can output the disturbance forces and torques for post-processing.
 There is also a call to retrieve the default data structure.
--------------------------------------------------------------------------
   Form:
   [xDot,dist,power] = RHSCubeSat( x, t, d )
   d = RHSCubeSat
--------------------------------------------------------------------------

   ------
   Inputs
   ------
   x        (14,1)    [r;v;q;w;wRWA;b]
   t         (1,1)    Time, sec
   d          (.)     Data structure
                      .jD0      (1,1) Julian date of epoch
                      .mass     (1,1) Spacecraft mass (kg)
                      .inertia  (3,3) Inertia matrix (kg-m2)
                      .dipole   (3,1) Residual dipole (ATM^2)
                      .power     (.)  Power data, see SolarCellPower 
                      .aeroModel    * Handle, see CubeSatAero
                      .opticalModel * Handle, see CubeSatRadiationPressure
                      .surfData  (.)  optional; empty to skip drag/optical calcs
                                      .cD    (3,1) Drag coefficient
                                      .cM    (3,1) Center of mass (m)
                                      .area  (1,n) Area (m2)
                                      .nFace (3,n) Face normals
                                      .rFace (3,n) Face locations (m)
                                      .att    (.)  Attitude model
                                      .sigma (3,n) Optical coefficients
                                      .planet (1)  Planet effects flag
                      .atm       (.) optional; empty to skip J70 and use AtmDens2
                      .kWheels         (n), empty if no wheels, indices of wRWA
                      .inertiaRWA     (1,1), optional, polar inertia (kg-m2)
                      .tRWA           (3,1), optional, wheel torque (Nm)

   -------
   Outputs
   -------
   x           (14,1)	   d[r;v;q;w;b]/dt
   dist         (.)       Disturbances data
    .fTotal  	   (3,1)   Total force, ECI frame  (N)
    .tTotal       (3,1)   Total torque, body frame (Nm)
    .fAerodyn	   (3,1)   Aerodynamic force
    .tAerodyn     (3,1)   Aerodynamic torque
    .fOptical	   (3,1)   Optical force
    .tOptical     (3,1)   Optical torque
    .tMag         (3,1)   Magnetic torque
    .tGG          (3,1)   Gravity gradient torque
   power       (1,1)      Power from solar cells (W)
 
--------------------------------------------------------------------------
 See also SolarCellPower, CubeSatAero, CubeSatRadiationPressure,
 SolarFluxPrediction, CubeSatEnvironment, CubeSatSimulation,
 CubeSatRWASimulation
--------------------------------------------------------------------------

Children:

AeroUtils: Coord/QIToBDot
Common: Quaternion/QForm
Common: Time/Date2JD
CubeSat: Power/SolarCellPower
CubeSat: Simulation/CubeSatAero
CubeSat: Simulation/CubeSatEnvironment
CubeSat: Simulation/CubeSatRadiationPressure
Math: Linear/Cross
Math: Linear/Mag
SC: Disturbances/GravityGradientFromR
SC: Environs/SolarFluxPrediction

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