Package org.orekit.attitudes

Class Inertia

java.lang.Object

org.orekit.attitudes.Inertia

public class Inertia
extends Object

Container for inertia of a 3D object.

Instances of this class are immutable

Since:

12.0

Author:

Luc Maisonobe

Constructor Summary

Constructors

Constructor	Description
Inertia(InertiaAxis iA1, InertiaAxis iA2, InertiaAxis iA3)	Simple constructor from principal axes.

Method Summary

Modifier and Type	Method	Description
InertiaAxis	getInertiaAxis1()	Get inertia along first axis.
InertiaAxis	getInertiaAxis2()	Get inertia along second axis.
InertiaAxis	getInertiaAxis3()	Get inertia along third axis.
Vector3D	momentum(Vector3D rotationRate)	Compute angular momentum.
Inertia	swap12()	Swap axes 1 and 2.
Inertia	swap13()	Swap axes 1 and 3.
Inertia	swap23()	Swap axes 2 and 3.

Methods inherited from class java.lang.Object

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

Constructor Details

Inertia

public Inertia(InertiaAxis iA1,
 InertiaAxis iA2,
 InertiaAxis iA3)

Simple constructor from principal axes.

Parameters:

iA1 - inertia along first axis

iA2 - inertia along second axis

iA3 - inertia along third axis

Method Details

swap12

public Inertia swap12()

Swap axes 1 and 2.

The instance is unchanged.

Returns:

inertia with swapped axes

swap13

public Inertia swap13()

Swap axes 1 and 3.

The instance is unchanged.

Returns:

inertia with swapped axes

swap23

public Inertia swap23()

Swap axes 2 and 3.

The instance is unchanged.

Returns:

inertia with swapped axes

getInertiaAxis1

public InertiaAxis getInertiaAxis1()

Get inertia along first axis.

Returns:

inertia along first axis

getInertiaAxis2

public InertiaAxis getInertiaAxis2()

Get inertia along second axis.

Returns:

inertia along second axis

getInertiaAxis3

public InertiaAxis getInertiaAxis3()

Get inertia along third axis.

Returns:

inertia along third axis

momentum

public Vector3D momentum(Vector3D rotationRate)

Compute angular momentum.

Parameters:

rotationRate - rotation rate in body frame.

Returns:

angular momentum in body frame