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impact.script
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impact.script
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%General Mission Analysis Tool(GMAT) Script
%Created: 2019-05-09 19:09:06
%----------------------------------------
%---------- Spacecraft
%----------------------------------------
Create CoordinateSystem LunaICRF;
GMAT LunaICRF.Origin = Luna;
GMAT LunaICRF.Axes = ICRF;
Create Spacecraft DSLWP_B;
GMAT DSLWP_B.DateFormat = UTCModJulian;
GMAT DSLWP_B.DateFormat = UTCGregorian;
GMAT DSLWP_B.Epoch = '25 Jul 2019 02:30:00.000';
GMAT DSLWP_B.CoordinateSystem = LunaICRF;
GMAT DSLWP_B.DisplayStateType = Keplerian;
GMAT DSLWP_B.SMA = 8708.404;
GMAT DSLWP_B.ECC = 0.747921;
GMAT DSLWP_B.INC = 44.157;
GMAT DSLWP_B.RAAN = 52.405;
GMAT DSLWP_B.AOP = 86.261;
GMAT DSLWP_B.TA = 165.00062091131025;
GMAT DSLWP_B.DryMass = 45;
GMAT DSLWP_B.Cd = 2.2;
GMAT DSLWP_B.Cr = 1.8;
GMAT DSLWP_B.DragArea = 0.25;
GMAT DSLWP_B.SRPArea = 0.25;
GMAT DSLWP_B.NAIFId = -10003001;
GMAT DSLWP_B.NAIFIdReferenceFrame = -9003001;
GMAT DSLWP_B.OrbitColor = Red;
GMAT DSLWP_B.TargetColor = Teal;
GMAT DSLWP_B.OrbitErrorCovariance = [ 1e+70 0 0 0 0 0 ; 0 1e+70 0 0 0 0 ; 0 0 1e+70 0 0 0 ; 0 0 0 1e+70 0 0 ; 0 0 0 0 1e+70 0 ; 0 0 0 0 0 1e+70 ];
GMAT DSLWP_B.CdSigma = 1e+70;
GMAT DSLWP_B.CrSigma = 1e+70;
GMAT DSLWP_B.Id = 'SatId';
GMAT DSLWP_B.Attitude = CoordinateSystemFixed;
GMAT DSLWP_B.SPADSRPScaleFactor = 1;
GMAT DSLWP_B.ModelFile = 'aura.3ds';
GMAT DSLWP_B.ModelOffsetX = 0;
GMAT DSLWP_B.ModelOffsetY = 0;
GMAT DSLWP_B.ModelOffsetZ = 0;
GMAT DSLWP_B.ModelRotationX = 0;
GMAT DSLWP_B.ModelRotationY = 0;
GMAT DSLWP_B.ModelRotationZ = 0;
GMAT DSLWP_B.ModelScale = 1;
GMAT DSLWP_B.AttitudeDisplayStateType = 'Quaternion';
GMAT DSLWP_B.AttitudeRateDisplayStateType = 'AngularVelocity';
GMAT DSLWP_B.AttitudeCoordinateSystem = EarthMJ2000Eq;
GMAT DSLWP_B.EulerAngleSequence = '321';
%----------------------------------------
%---------- ForceModels
%----------------------------------------
Create ForceModel LunaProp_ForceModel;
GMAT LunaProp_ForceModel.CentralBody = Luna;
GMAT LunaProp_ForceModel.PrimaryBodies = {Luna};
GMAT LunaProp_ForceModel.PointMasses = {Earth, Sun};
GMAT LunaProp_ForceModel.Drag = None;
GMAT LunaProp_ForceModel.SRP = On;
GMAT LunaProp_ForceModel.RelativisticCorrection = Off;
GMAT LunaProp_ForceModel.ErrorControl = RSSStep;
GMAT LunaProp_ForceModel.GravityField.Luna.Degree = 10;
GMAT LunaProp_ForceModel.GravityField.Luna.Order = 10;
GMAT LunaProp_ForceModel.GravityField.Luna.StmLimit = 100;
GMAT LunaProp_ForceModel.GravityField.Luna.PotentialFile = '../data/gravity/luna/LP165P.cof';
GMAT LunaProp_ForceModel.GravityField.Luna.TideModel = 'None';
GMAT LunaProp_ForceModel.SRP.Flux = 1367;
GMAT LunaProp_ForceModel.SRP.SRPModel = Spherical;
GMAT LunaProp_ForceModel.SRP.Nominal_Sun = 149597870.691;
%----------------------------------------
%---------- Propagators
%----------------------------------------
Create Propagator LunaProp;
GMAT LunaProp.FM = LunaProp_ForceModel;
GMAT LunaProp.Type = PrinceDormand78;
GMAT LunaProp.InitialStepSize = 1;
GMAT LunaProp.Accuracy = 1e-13;
GMAT LunaProp.MinStep = 0;
GMAT LunaProp.MaxStep = 10;
GMAT LunaProp.MaxStepAttempts = 50;
GMAT LunaProp.StopIfAccuracyIsViolated = true;
%----------------------------------------
%---------- Burns
%----------------------------------------
Create ImpulsiveBurn ImpulsiveBurn1;
GMAT ImpulsiveBurn1.CoordinateSystem = Local;
GMAT ImpulsiveBurn1.Origin = Luna;
GMAT ImpulsiveBurn1.Axes = VNB;
GMAT ImpulsiveBurn1.Element1 = 0.007;
GMAT ImpulsiveBurn1.Element2 = 0;
GMAT ImpulsiveBurn1.Element3 = 0;
GMAT ImpulsiveBurn1.DecrementMass = false;
GMAT ImpulsiveBurn1.Isp = 300;
GMAT ImpulsiveBurn1.GravitationalAccel = 9.81;
%----------------------------------------
%---------- Coordinate Systems
%----------------------------------------
Create CoordinateSystem LunaInertial;
GMAT LunaInertial.Origin = Luna;
GMAT LunaInertial.Axes = BodyInertial;
Create CoordinateSystem LunaFixed;
GMAT LunaFixed.Origin = Luna;
GMAT LunaFixed.Axes = BodyFixed;
Create CoordinateSystem LunaEarth;
GMAT LunaEarth.Origin = Luna;
GMAT LunaEarth.Axes = ObjectReferenced;
GMAT LunaEarth.XAxis = R;
GMAT LunaEarth.ZAxis = N;
GMAT LunaEarth.Primary = Luna;
GMAT LunaEarth.Secondary = Earth;
%----------------------------------------
%---------- Subscribers
%----------------------------------------
Create OrbitView OrbitView1;
GMAT OrbitView1.SolverIterations = Current;
GMAT OrbitView1.UpperLeft = [ 0.1801470588235294 0.04190751445086705 ];
GMAT OrbitView1.Size = [ 0.9926470588235294 0.9552023121387283 ];
GMAT OrbitView1.RelativeZOrder = 255;
GMAT OrbitView1.Maximized = true;
GMAT OrbitView1.Add = {DSLWP_B, Earth, Luna};
GMAT OrbitView1.CoordinateSystem = LunaEarth;
GMAT OrbitView1.DrawObject = [ true true true ];
GMAT OrbitView1.DataCollectFrequency = 1;
GMAT OrbitView1.UpdatePlotFrequency = 50;
GMAT OrbitView1.NumPointsToRedraw = 0;
GMAT OrbitView1.ShowPlot = true;
GMAT OrbitView1.MaxPlotPoints = 20000;
GMAT OrbitView1.ShowLabels = true;
GMAT OrbitView1.ViewPointReference = Luna;
GMAT OrbitView1.ViewPointVector = [ 0 0 40000 ];
GMAT OrbitView1.ViewDirection = Luna;
GMAT OrbitView1.ViewScaleFactor = 1;
GMAT OrbitView1.ViewUpCoordinateSystem = LunaEarth;
GMAT OrbitView1.ViewUpAxis = Z;
GMAT OrbitView1.EclipticPlane = Off;
GMAT OrbitView1.XYPlane = Off;
GMAT OrbitView1.WireFrame = Off;
GMAT OrbitView1.Axes = On;
GMAT OrbitView1.Grid = Off;
GMAT OrbitView1.SunLine = Off;
GMAT OrbitView1.UseInitialView = On;
GMAT OrbitView1.StarCount = 7000;
GMAT OrbitView1.EnableStars = On;
GMAT OrbitView1.EnableConstellations = Off;
Create GroundTrackPlot GroundTrackPlot1;
GMAT GroundTrackPlot1.SolverIterations = Current;
GMAT GroundTrackPlot1.UpperLeft = [ 0.1801470588235294 0.04190751445086705 ];
GMAT GroundTrackPlot1.Size = [ 0.9926470588235294 0.9552023121387283 ];
GMAT GroundTrackPlot1.RelativeZOrder = 258;
GMAT GroundTrackPlot1.Maximized = true;
GMAT GroundTrackPlot1.Add = {DSLWP_B, Earth};
GMAT GroundTrackPlot1.DataCollectFrequency = 1;
GMAT GroundTrackPlot1.UpdatePlotFrequency = 5000;
GMAT GroundTrackPlot1.NumPointsToRedraw = 0;
GMAT GroundTrackPlot1.ShowPlot = true;
GMAT GroundTrackPlot1.MaxPlotPoints = 20000;
GMAT GroundTrackPlot1.CentralBody = Luna;
GMAT GroundTrackPlot1.TextureMap = 'Moon_HermesCelestiaMotherlode.jpg';
%----------------------------------------
%---------- Mission Sequence
%----------------------------------------
BeginMissionSequence;
PenUp GroundTrackPlot1 OrbitView1;
Propagate LunaProp(DSLWP_B) {DSLWP_B.ElapsedDays = 6};
PenDown GroundTrackPlot1 OrbitView1;
Propagate LunaProp(DSLWP_B) {DSLWP_B.Luna.Altitude = 0};