Admin : Page créée avec « public class SequenceOfManeuvers { public static void main(String[] args) throws PatriusException { // Patrius Dataset... »

2018-12-18T10:24:56Z

Page créée avec « <syntaxhighlight lang="java"> public class SequenceOfManeuvers { public static void main(String[] args) throws PatriusException { // Patrius Dataset... »

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<syntaxhighlight lang="java">
public class SequenceOfManeuvers {

public static void main(String[] args) throws PatriusException {

// Patrius Dataset initialization (needed for example to get the UTC time)
PatriusDataset.addResourcesFromPatriusDataset() ;

// Recovery of the UTC time scale using a "factory" (not to duplicate such unique object)
final TimeScale TUC = TimeScalesFactory.getUTC();

// Creating a mass model with a main part and with a tank
final AssemblyBuilder builder = new AssemblyBuilder();

// Main part (dry mass)
final double dryMass = 1000.;
builder.addMainPart("MAIN");
builder.addProperty(new MassProperty(dryMass), "MAIN");

// Tank part (ergols mass)
final double ergolsMass = 100.;
final TankProperty tank = new TankProperty(ergolsMass);
builder.addPart("TANK", "MAIN", Transform.IDENTITY);
builder.addProperty(tank, "TANK");

// Engine part
final double isp = 300.;
final double thrust = 400.;
final PropulsiveProperty prop = new PropulsiveProperty(thrust, isp);
builder.addPart("PROP", "MAIN", Transform.IDENTITY);
builder.addProperty(prop, "PROP");

final Assembly assembly = builder.returnAssembly();
final MassProvider mm = new MassModel(assembly);

// SPECIFIC IMPULSIVE MANEUVER
// Event corresponding to the criteria to trigger the impulsive maneuver
// (when the S/C is at the apogee)
final EventDetector event = new AnomalyDetector(PositionAngle.TRUE, FastMath.PI);
// Creation of the impulsive maneuver (20 m/s int the x vehicle direction)
final Vector3D deltaV = new Vector3D(20., 0., 0.);
final ImpulseManeuver imp = new ImpulseManeuver(event, deltaV, prop, mm, tank, LOFType.TNW);

// SPECIFIC CONTINUOUS MANEUVER
// Duration of the continuous maneuver to get a 20 m/s boost
final AbsoluteDate startDate = new AbsoluteDate("2010-01-01T12:00:00.000", TUC);
final double G0 = 9.80665;
final double duration = G0*isp*mm.getTotalMass()*(1. - FastMath.exp(-20/(G0*isp)))/thrust;
// Direction of the thrust in the X vehicle axis
final Vector3D direction = new Vector3D(1., 0., 0.);
// Creation of the continuous thrust maneuver
final ContinuousThrustManeuver man = new ContinuousThrustManeuver(startDate, duration, prop, direction, mm, tank, LOFType.TNW);

// SPECIFIC SEQUENCE OF MANEUVERS
ManeuversSequence seq = new ManeuversSequence(10., 10.);
seq.add(imp);
seq.add(man);

System.out.println("Amount of maneuvers: "+seq.getSize());

}

}
</syntaxhighlight>

SequenceOfManeuvers 4.1 - Historique des versions

Admin : Page créée avec « public class SequenceOfManeuvers { public static void main(String[] args) throws PatriusException { // Patrius Dataset... »

Admin : Page créée avec « public class SequenceOfManeuvers { public static void main(String[] args) throws PatriusException { // Patrius Dataset... »