org.orekit.propagation.semianalytical.dsst.forces

Class FieldDSSTJ2SquaredClosedFormContext<T extends org.hipparchus.CalculusFieldElement<T>>

java.lang.Object

org.orekit.propagation.semianalytical.dsst.forces.FieldForceModelContext<T>

org.orekit.propagation.semianalytical.dsst.forces.FieldDSSTJ2SquaredClosedFormContext<T>

Type Parameters:

T - type of the field elements

public class FieldDSSTJ2SquaredClosedFormContext<T extends org.hipparchus.CalculusFieldElement<T>>
extends FieldForceModelContext<T>

This class is a container for the common parameters used in DSSTJ2SquaredClosedForm.

It performs parameters initialization at each integration step for the second-order J2-squared contribution to the central body gravitational perturbation.

Since:

12.0

Author:

Bryan Cazabonne

Constructor Summary

Constructors

Constructor and Description
FieldDSSTJ2SquaredClosedFormContext(FieldAuxiliaryElements<T> auxiliaryElements, UnnormalizedSphericalHarmonicsProvider provider) Simple constructor.

Method Summary

Modifier and Type	Method and Description
T	getA4() Get the semi major axis to the power 4.
double	getAlpha4() Get the equatorial radius of the central body to the power 4.
T	getC() Get the cosine of the inclination.
T	getEta() Get the eta value.
T	getS2() Get the sine of the inclination to the power 2.

Methods inherited from class org.orekit.propagation.semianalytical.dsst.forces.FieldForceModelContext

getFieldAuxiliaryElements

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldDSSTJ2SquaredClosedFormContext

public FieldDSSTJ2SquaredClosedFormContext(FieldAuxiliaryElements<T> auxiliaryElements,
                                           UnnormalizedSphericalHarmonicsProvider provider)

Simple constructor.

Parameters:

auxiliaryElements - auxiliary elements related to the current orbit

provider - provider for spherical harmonics

Method Detail

getAlpha4

public double getAlpha4()

Get the equatorial radius of the central body to the power 4.

Returns:

the equatorial radius of the central body to the power 4

getA4

public T getA4()

Get the semi major axis to the power 4.

Returns:

the semi major axis to the power 4

getEta

public T getEta()

Get the eta value.

Returns:

sqrt(1 - e * e)

getC

public T getC()

Get the cosine of the inclination.

Returns:

the cosine of the inclination

getS2

public T getS2()

Get the sine of the inclination to the power 2.

Returns:

the sine of the inclination to the power 2