fr.cnes.sirius.patrius.assembly.properties
Class AeroCrossSectionProperty

java.lang.Object
  org.orekit.parameter.Parameterizable
      fr.cnes.sirius.patrius.assembly.properties.AeroCrossSectionProperty

All Implemented Interfaces:

IPartProperty, Serializable, IParameterizable

Direct Known Subclasses:

AeroSphereProperty

public class AeroCrossSectionProperty
extends Parameterizable
implements IPartProperty

This class is a cross section property providing the cross section of shapes such as sphere, cylinder or parallelepiped. This cross section is to be used in aero models for drag force computation.

Since:

3.4

Version:

$Id: AeroCrossSectionProperty.java 17588 2017-05-10 13:31:54Z bignon $

Author:

rodriguest

See Also:

Serialized Form

Concurrency :

immutable

Field Summary

static String	C_X Default drag force coefficient parameter name.
static double	DEFAULT_C_X Default normal force coefficient value.

Constructor Summary

AeroCrossSectionProperty(CrossSectionProvider shape)
Constructor of this property with default value for C_X.

AeroCrossSectionProperty(CrossSectionProvider shape, double dragCoef)
Constructor of this property giving the drag coef.

AeroCrossSectionProperty(CrossSectionProvider shape, IParamDiffFunction dragCoefFct)
Constructor of this property defining the drag coef as a IParamDiffFunction.

AeroCrossSectionProperty(CrossSectionProvider shape, Parameter dragCoefFct)
Constructor of this property defining the drag coef as a IParamDiffFunction.

Method Summary

double	getCrossSection(SpacecraftState state, Vector3D relativeVelocity, Frame mainPartFrame, Frame partFrame) Compute the cross section of main shape using the relative velocity in the part (having the aero property) frame as the direction to provider to the CrossSectionProvider.getCrossSection(Vector3D).
IParamDiffFunction	getDragForce() Get the drag force coefficient parametrizable function.
double	getDragForceDerivativeValue(Parameter parameter, SpacecraftState s) Get the drag force coefficient derivative value with respect to the given parameter.
PropertyType	getType() Get the type of the property.

Methods inherited from class org.orekit.parameter.Parameterizable

addParameter, getParameters, supportsParameter

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_C_X

public static final double DEFAULT_C_X

Default normal force coefficient value.

See Also:

Constant Field Values

C_X

public static final String C_X

Default drag force coefficient parameter name.

See Also:

Constant Field Values

Constructor Detail

AeroCrossSectionProperty

public AeroCrossSectionProperty(CrossSectionProvider shape)

Constructor of this property with default value for C_X.

Parameters:

shape - the main shape

AeroCrossSectionProperty

public AeroCrossSectionProperty(CrossSectionProvider shape,
                                double dragCoef)

Constructor of this property giving the drag coef.

Parameters:

shape - the main shape

dragCoef - The dragCoef.

AeroCrossSectionProperty

public AeroCrossSectionProperty(CrossSectionProvider shape,
                                Parameter dragCoefFct)

Constructor of this property defining the drag coef as a IParamDiffFunction.

Parameters:

shape - the main shape

dragCoefFct - The dragCoef parameterizable function.

AeroCrossSectionProperty

public AeroCrossSectionProperty(CrossSectionProvider shape,
                                IParamDiffFunction dragCoefFct)

Constructor of this property defining the drag coef as a IParamDiffFunction.

Parameters:

shape - the main shape

dragCoefFct - The dragCoef parameterizable function.

Method Detail

getCrossSection

public double getCrossSection(SpacecraftState state,
                              Vector3D relativeVelocity,
                              Frame mainPartFrame,
                              Frame partFrame)
                       throws OrekitException

Compute the cross section of main shape using the relative velocity in the part (having the aero property) frame as the direction to provider to the CrossSectionProvider.getCrossSection(Vector3D).

Parameters:

state - the current state of the spacecraft

relativeVelocity - the spacecraft velocity relative to the atmosphere in state frame.

mainPartFrame - main frame

partFrame - frame of part owning the property

Returns:

the cross section of the main shape.

Throws:

OrekitException - if some frame specific error occurs

getType

public PropertyType getType()

Description copied from interface: IPartProperty

Get the type of the property.

Specified by:

getType in interface IPartProperty

Returns:

the type of the property (see PropertyType enumeration)

getDragForceDerivativeValue

public double getDragForceDerivativeValue(Parameter parameter,
                                          SpacecraftState s)

Get the drag force coefficient derivative value with respect to the given parameter.

Parameters:

parameter - the parameter

s - the current state

Returns:

the drag force coefficient derivative value

getDragForce

public IParamDiffFunction getDragForce()

Get the drag force coefficient parametrizable function.

Returns:

force coefficient parametrizable function