GMAT_SimplePropagation.script

%General Mission Analysis Tool(GMAT) Script
%Author: Juan Luis Cano <hello@juanlu.space>

%---------- Spacecraft

Create Spacecraft geoSat;
GMAT geoSat.DateFormat = TAIModJulian;
GMAT geoSat.Epoch = '21545';
GMAT geoSat.CoordinateSystem = EarthMJ2000Eq;
GMAT geoSat.DisplayStateType = Keplerian;
GMAT geoSat.SMA = 6780;
GMAT geoSat.ECC = 0.001;
GMAT geoSat.INC = 28.5;
GMAT geoSat.RAAN = 67.0;
GMAT geoSat.AOP = 355.0;
GMAT geoSat.TA = 250.0;
GMAT geoSat.Id = 'SatId';

%---------- ForceModels

Create ForceModel AllForces;
GMAT AllForces.CentralBody = Earth;
GMAT AllForces.PrimaryBodies = {Earth};
GMAT AllForces.Drag = None;
GMAT AllForces.SRP = Off;
GMAT AllForces.RelativisticCorrection = Off;
GMAT AllForces.ErrorControl = None;
GMAT AllForces.GravityField.Earth.Degree = 2;
GMAT AllForces.GravityField.Earth.Order = 0;
GMAT AllForces.GravityField.Earth.PotentialFile = 'EGM96.cof';
GMAT AllForces.GravityField.Earth.EarthTideModel = 'None';

%---------- Propagators

Create Propagator DefaultProp;
GMAT DefaultProp.FM = AllForces;
GMAT DefaultProp.Type = PrinceDormand853;
GMAT DefaultProp.InitialStepSize = 60;
GMAT DefaultProp.Accuracy = 1.0e-011;
GMAT DefaultProp.MinStep = 0.0;
GMAT DefaultProp.MaxStep = 86400;
GMAT DefaultProp.MaxStepAttempts = 1000;
GMAT DefaultProp.StopIfAccuracyIsViolated = true;

%---------- Mission Sequence

BeginMissionSequence;

Propagate 'Prop 3 hours' DefaultProp(geoSat) {geoSat.ElapsedDays = 0.125};