fr.cnes.genopus.nonWidget.vehicle.aeroCoeffs

Class CustomAeroCoeffByAoA

java.lang.Object

fr.cnes.genopus.nonWidget.vehicle.aeroCoeffs.CustomAeroCoeffByOneVarAbstract

fr.cnes.genopus.nonWidget.vehicle.aeroCoeffs.CustomAeroCoeffByAoA

All Implemented Interfaces:

Serializable, org.orekit.parameter.IParamDiffFunction, org.orekit.parameter.IParameterizable, org.orekit.parameter.IParameterizableFunction

public class CustomAeroCoeffByAoA
extends CustomAeroCoeffByOneVarAbstract

Aerodynamic coefficient function of the spacecraft angle of attack.

Author:

sumelzi

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CustomAeroCoeffByAoA(Double[] xVariable, Double[] yVariable, org.orekit.bodies.ExtendedOneAxisEllipsoid earthShape) Creates a new instance entering the x and y variables as doubles.

Method Summary

Methods

Modifier and Type	Method and Description
protected static double	angleOfAttackFromSpacecraftState(org.orekit.propagation.SpacecraftState state, org.orekit.bodies.ExtendedOneAxisEllipsoid earthShape) Computes the angle of attack from the spacecraft state and the Earth shape.
protected double	computeXVariable(org.orekit.propagation.SpacecraftState state) Computes the x variable from the spacecraft state.

Methods inherited from class fr.cnes.genopus.nonWidget.vehicle.aeroCoeffs.CustomAeroCoeffByOneVarAbstract

derivativeValue, extendedVectorY, getFunction, getParameters, getXArray, getYArray, isDifferentiableBy, supportsParameter, toString, value

Methods inherited from class java.lang.Object

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

Constructor Detail

CustomAeroCoeffByAoA

public CustomAeroCoeffByAoA(Double[] xVariable,
                    Double[] yVariable,
                    org.orekit.bodies.ExtendedOneAxisEllipsoid earthShape)

Creates a new instance entering the x and y variables as doubles.

Parameters:

xVariable - array of x variables (angle of attack (rad))

yVariable - array of y variables (aerodynamic coefficient)

earthShape - Earth shape

Method Detail

computeXVariable

protected double computeXVariable(org.orekit.propagation.SpacecraftState state)
                           throws NonWidgetException

Computes the x variable from the spacecraft state.

Specified by:

computeXVariable in class CustomAeroCoeffByOneVarAbstract

Parameters:

state - the spacecraft state

Returns:

the x variable

Throws:

NonWidgetException - if the transformation from state frame to Earth body frame, to topocentric frame or to ITRF frame cannot be computed, or if Side slip angle equals PI/2 or -PI/2 (angle of attack cannot be computed)

angleOfAttackFromSpacecraftState

protected static double angleOfAttackFromSpacecraftState(org.orekit.propagation.SpacecraftState state,
                                      org.orekit.bodies.ExtendedOneAxisEllipsoid earthShape)
                                                  throws NonWidgetException

Computes the angle of attack from the spacecraft state and the Earth shape.

Parameters:

state - the spacecraft state

earthShape - the Earth shape

Returns:

the mach number

Throws:

NonWidgetException - if the transformation from state frame to ITRF cannot be computed