GPVehicle

GPVehicle

How to call it

For using the GPVehicle class, the developer has only to create such an object with these two possibilities:

• With no vehicle initialization

veh = new GPVehicle("My Vehicle");

• Or, if we want to initialize the widget with a predefined vehicle:

final CustomVehicle vehicle = new Vehicle(…);
veh = new GPVehicle("My Vehicle", vehicle);

Since the V2.0 version (and thus the [PATRIUS] V4.1.1), it is now possible to use directly the Vehicle class. So, it is possible to search in [PATRIUS] documentation how it is possible to initialize such an object. We have then to instantiate this class using all the previous sub-objects described in the following paragraphs.

Note: for the previous V1.3(.1) versions, it was mandatory to use the specific GENOPUS CustomVehicle class.

Dry mass initialization

// DRY MASS
final double dryMass = 1000.;
MassProperty dryMassProperty = new MassProperty(dryMass);

Propulsive properties initialization

// PROPULSION
 
final ArrayList<PropulsiveProperty> enginesList = new ArrayList<PropulsiveProperty>();
PropulsiveProperty prop1 = new PropulsiveProperty(1000., 320.);
prop1.setPartName("OCS");
enginesList.add(prop1);
PropulsiveProperty prop2 = new PropulsiveProperty(270., 150.);
prop2.setPartName("ACS");
enginesList.add(prop2);
 
final ArrayList<TankProperty> fuelTankList = new ArrayList<TankProperty>();
TankProperty tank = new TankProperty(500.);
tank.setPartName("TANK");
fuelTankList.add(tank);

Note: for the previous V1.3(.1) versions, it was mandatory to use the specific GENOPUS CustomEngine and CustomFuelTank classes.

Shape characteristics initializaton

// SHAPE (HERE PARALLELEPIPED + SOLAR PANELS)
final RightParallelepiped parall = new RightParallelepiped(4.0, 1.0, 2.0);
final RightParallelepiped solarPanels = new RightParallelepiped(10.0, 0.0, 0.0);
VehicleSurfaceModel vehicleRefSurface = new VehicleSurfaceModel(parall, solarPanels);

Note: for the previous V1.3(.1) versions, it was mandatory to use the specific GENOPUS classes for shape (as for example CustomParallelepiped as well as the CustomVehicleSurfaceModel class.""

Aerodynamic properties initialization

// AERODYNAMIC PROPERTIES (CONSTANT COEFFICIENTS)
final double cd = 2.0;
final double cl = 0.;
final CustomAerodynamicProperties aerodynamicProperties =
   new CustomAerodynamicProperties(vehicleRefSurface, cd, cl);

Note #1: we need the shape model previously defined

Note #2: for the previous V1.3(.1) versions, it was mandatory to use the specific GENOPUS CustomAerodynamicProperties class.

Radiative properties initialization

// RADIATIVE PROPERTIES
final double ka = 1.0;
final double ks = 0.0;
final double kd = 0.0;
final RadiativeProperty rp = new RadiativeProperty(ka, ks, kd);
 
final double absorptionCoef = 1.0;
final double specularCoef = 0.0;
final double diffuseCoef = 0.0;
final RadiativeIRProperty rpIr =
   new RadiativeIRProperty(absorptionCoef, specularCoef, diffuseCoef);
 
final RadiativeProperties radiativeProperties =
   new RadiativeProperties(rp, rpIr, vehicleRefSurface);

Note #1: we need the shape model previously defined

Note #2: for the previous V1.3(.1) versions, it was mandatory to use the specific GENOPUS CustomRadiativeProperties class.

Vehicle initialization

At last, when all sub-objects are available, we have just to write this:

final Vehicle vehicle =
   new Vehicle(vehicleRefSurface, null, dryMassProperty,
                     aerodynamicProperties, radiativeProperties,
                     enginesList, fuelTankList);

Note: of course, possible to put null to some of them except for dry mass properties (a zero value for it will raise a warning as a negative one an error).

Display

With the previous initialization and by clicking on the engines and/or tanks for more information, we will have this display:

How to use it

To get a [PATRIUS] Vehicle object, we will just have to call for the getPatriusObject() method as below:

Vehicle vehicle = veh.getPatriusObject();

Note: for the previous V1.3(.1) versions, the getPatriusObject() method was returning a CustomVehicle object.

How it is stored

Here is the XML format for such a vehicle:

  <Vehicle name="My_Vehicle">
    <Boolean name="hasMassProperties">true</Boolean>
    <MassProperties name="massProperties">
      <Real name="dryMass" unit="kg">1.0E3</Real>
    </MassProperties>
    <Boolean name="hasPropulsiveProperties">true</Boolean>
    <PropulsiveProperties name="PropulsiveProperties">
      <Real name="ergMass" unit="kg">5.0E2</Real>
      <ComponentList name="listOfEngines">
        <!--Amount of items-->
        <Integer name="nbItems">2</Integer>
        <ComponentListItem name="Item_1">
          <Engine name="Engine">
            <String name="name">OCS</String>
            <Real name="isp" unit="s">3.2E2</Real>
            <Real name="thrust" unit="N">1.0E3</Real>
          </Engine>
        </ComponentListItem>
        <ComponentListItem name="Item_2">
          <Engine name="Engine">
            <String name="name">ACS</String>
            <Real name="isp" unit="s">1.5E2</Real>
            <Real name="thrust" unit="N">2.7E2</Real>
          </Engine>
        </ComponentListItem>
      </ComponentList>
      <ComponentList name="listOfTanks">
        <!--Amount of items-->
        <Integer name="nbItems">1</Integer>
        <ComponentListItem name="Item_1">
          <FuelTank name="Fuel_Tank">
            <String name="name">Tank1</String>
            <Real name="propMass" unit="kg">5.0E2</Real>
          </FuelTank>
        </ComponentListItem>
      </ComponentList>
    </PropulsiveProperties>
    <Boolean name="hasAerodynamicProperties">true</Boolean>
    <AerodynamicProperties name="AerodynamicProperties">
      <Real name="dragCoefficient">2.0E0</Real>
      <Real name="liftCoefficient">0.0E0</Real>
    </AerodynamicProperties>
    <Boolean name="hasRadiativeProperties">false</Boolean>
    <Shape name="VehicleShape">
      <String name="shapeType">Parallelepiped</String>
      <String name="shapeDefinitionType">Surface</String>
      <Real name="sx" unit="m^2">4.0E0</Real>
      <Real name="sy" unit="m^2">1.0E0</Real>
      <Real name="sz" unit="m^2">2.0E0</Real>
      <Boolean name="withSolarPanels">false</Boolean>
    </Shape>
  </Vehicle>