org.orekit.forces.maneuvers.propulsion

Class ScaledConstantThrustPropulsionModel

java.lang.Object

org.orekit.forces.maneuvers.propulsion.AbstractConstantThrustPropulsionModel

org.orekit.forces.maneuvers.propulsion.ScaledConstantThrustPropulsionModel

All Implemented Interfaces:

PropulsionModel, ThrustPropulsionModel

public class ScaledConstantThrustPropulsionModel
extends AbstractConstantThrustPropulsionModel

Thrust propulsion model with parameters (for estimation) represented by scale factors on the X, Y and Z axis of the spacecraft frame.

Since:

10.2

Author:

Maxime Journot

Field Summary

Fields

Modifier and Type	Field and Description
static String	THRUSTX_SCALE_FACTOR Parameter name for the scale factor on the X component of the thrust in S/C frame.
static String	THRUSTY_SCALE_FACTOR Parameter name for the scale factor on the Y component of the thrust in S/C frame.
static String	THRUSTZ_SCALE_FACTOR Parameter name for the scale factor on the Z component of the thrust in S/C frame.

Constructor Summary

Constructors

Constructor and Description
ScaledConstantThrustPropulsionModel(double thrust, double isp, Vector3D direction, String name) Constructor with min/max deviation for the scale factors.

Method Summary

Modifier and Type	Method and Description
double	getFlowRate() Get the flow rate (kg/s).
double	getFlowRate(double[] parameters) Get the flow rate (kg/s).
<T extends RealFieldElement<T>> T	getFlowRate(T[] parameters) Get the flow rate (kg/s).
ParameterDriver[]	getParametersDrivers() Get the propulsion model parameter drivers.
Vector3D	getThrustVector() Get the thrust vector in spacecraft frame (N).
Vector3D	getThrustVector(double[] parameters) Get the thrust vector in spacecraft frame (N).
<T extends RealFieldElement<T>> FieldVector3D<T>	getThrustVector(T[] parameters) Get the thrust vector in spacecraft frame (N).

Methods inherited from class org.orekit.forces.maneuvers.propulsion.AbstractConstantThrustPropulsionModel

getDirection, getFlowRate, getFlowRate, getFlowRate, getInitialFlowrate, getInitialThrustVector, getIsp, getName, getThrust, getThrustVector, getThrustVector, getThrustVector

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.forces.maneuvers.propulsion.ThrustPropulsionModel

getAcceleration, getAcceleration, getDirection, getIsp, getMassDerivatives, getMassDerivatives, getThrust

Methods inherited from interface org.orekit.forces.maneuvers.propulsion.PropulsionModel

init

Field Detail

THRUSTX_SCALE_FACTOR

public static final String THRUSTX_SCALE_FACTOR

Parameter name for the scale factor on the X component of the thrust in S/C frame.

See Also:

Constant Field Values

THRUSTY_SCALE_FACTOR

public static final String THRUSTY_SCALE_FACTOR

Parameter name for the scale factor on the Y component of the thrust in S/C frame.

See Also:

Constant Field Values

THRUSTZ_SCALE_FACTOR

public static final String THRUSTZ_SCALE_FACTOR

Parameter name for the scale factor on the Z component of the thrust in S/C frame.

See Also:

Constant Field Values

Constructor Detail

ScaledConstantThrustPropulsionModel

public ScaledConstantThrustPropulsionModel(double thrust,
                                           double isp,
                                           Vector3D direction,
                                           String name)

Constructor with min/max deviation for the scale factors. Typical usage is, for example, if you know that your propulsion system usually has an error of less than 10% then set the min/max to respectively 0.9 and 1.1.

Parameters:

thrust - the thrust (N)

isp - the isp (s)

direction - in spacecraft frame

name - the name of the maneuver

Method Detail

getThrustVector

public Vector3D getThrustVector()

Get the thrust vector in spacecraft frame (N). Here it does not depend on current S/C state.

Specified by:

getThrustVector in class AbstractConstantThrustPropulsionModel

Returns:

thrust vector in spacecraft frame (N)

getFlowRate

public double getFlowRate()

Get the flow rate (kg/s). Here it does not depend on current S/C.

Specified by:

getFlowRate in class AbstractConstantThrustPropulsionModel

Returns:

flow rate (kg/s)

getParametersDrivers

public ParameterDriver[] getParametersDrivers()

Get the propulsion model parameter drivers.

Returns:

propulsion model parameter drivers

getThrustVector

public Vector3D getThrustVector(double[] parameters)

Get the thrust vector in spacecraft frame (N). Here it does not depend on current S/C state.

Specified by:

getThrustVector in class AbstractConstantThrustPropulsionModel

Parameters:

parameters - propulsion model parameters

Returns:

thrust vector in spacecraft frame (N)

getFlowRate

public double getFlowRate(double[] parameters)

Get the flow rate (kg/s). Here it does not depend on current S/C state.

Specified by:

getFlowRate in class AbstractConstantThrustPropulsionModel

Parameters:

parameters - propulsion model parameters

Returns:

flow rate (kg/s)

getThrustVector

public <T extends RealFieldElement<T>> FieldVector3D<T> getThrustVector(T[] parameters)

Get the thrust vector in spacecraft frame (N). Here it does not depend on current S/C state.

Specified by:

getThrustVector in class AbstractConstantThrustPropulsionModel

Type Parameters:

T - extends RealFieldElement<T>

Parameters:

parameters - propulsion model parameters

Returns:

thrust vector in spacecraft frame (N)

getFlowRate

public <T extends RealFieldElement<T>> T getFlowRate(T[] parameters)

Get the flow rate (kg/s). Here it does not depend on current S/C state.

Specified by:

getFlowRate in class AbstractConstantThrustPropulsionModel

Type Parameters:

T - extends RealFieldElement<T>

Parameters:

parameters - propulsion model parameters

Returns:

flow rate (kg/s)