org.orekit.propagation
Class SimpleMassModel

java.lang.Object
  org.orekit.propagation.SimpleMassModel

All Implemented Interfaces:

Cloneable, MassProvider

public class SimpleMassModel
extends Object
implements MassProvider

Simple implementation of MassProvider. The mass DOESNT vary!

Since:

2.1

Version:

$Id: SimpleMassModel.java 16589 2016-09-12 15:38:39Z bignon $

Author:

Rami Houdroge

Concurrency :

immutable

Field Summary

Fields inherited from interface org.orekit.propagation.MassProvider

MASS

Constructor Summary

SimpleMassModel(double mass, String name)
Constructor.

Method Summary

void	addMassDerivative(String partName, double flowRate) This model represents one part only.
AdditionalEquations	getAdditionalEquation(String name) Get the mass equation related to the part.
List<String>	getAllPartsNames() Get the list of the name of the parts.
double	getMass(String partName) This model represents one part only.
double	getTotalMass() Return the mass of the spacecraft.
double	getTotalMass(SpacecraftState state) Return the mass of the spacecraft following the order.
void	setMassDerivativeZero(String partName) Set mass derivative to zero.
void	updateMass(String partName, double mass) This model represents one part only.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleMassModel

public SimpleMassModel(double mass,
                       String name)

Constructor. Simple variable mass model.
The mass model name specified here is the name to be used with the constructors of the thrust maneuvers.

Parameters:

mass - mass of spacecraft

name - mass model name

Method Detail

getTotalMass

public double getTotalMass()

Return the mass of the spacecraft.

Specified by:

getTotalMass in interface MassProvider

Returns:

spacecraft mass

getTotalMass

public double getTotalMass(SpacecraftState state)

Return the mass of the spacecraft following the order.

• If mass is in spacecraft state, mass from spacecraft state will be returned
• Otherwise mass from mass provider is returned (same as MassProvider.getTotalMass())

Specified by:

getTotalMass in interface MassProvider

Parameters:

state - spacecraft state

Returns:

spacecraft mass

getMass

public double getMass(String partName)

This model represents one part only. The expected partName is the name of the model given at construction time. Return the mass of the given part.

Specified by:

getMass in interface MassProvider

Parameters:

partName - given part

Returns:

mass of part

updateMass

public void updateMass(String partName,
                       double mass)

This model represents one part only. The expected partName is the name of the model given at construction time. Update the mass of the given part.

Specified by:

updateMass in interface MassProvider

Parameters:

partName - given part

mass - mass of the given part

addMassDerivative

public void addMassDerivative(String partName,
                              double flowRate)

This model represents one part only. The expected partName is the name of the model given at construction time. Add the mass derivate of the given part.

Specified by:

addMassDerivative in interface MassProvider

Parameters:

partName - name of part subject to mass variation

flowRate - flow rate of specified part

setMassDerivativeZero

public void setMassDerivativeZero(String partName)

Set mass derivative to zero.

Specified by:

setMassDerivativeZero in interface MassProvider

Parameters:

partName - name of part whose mass derivative is set to zero

getAdditionalEquation

public AdditionalEquations getAdditionalEquation(String name)

Get the mass equation related to the part.

Specified by:

getAdditionalEquation in interface MassProvider

Parameters:

name - part name

Returns:

the associated mass equation

getAllPartsNames

public List<String> getAllPartsNames()

Get the list of the name of the parts.

Specified by:

getAllPartsNames in interface MassProvider

Returns:

the list of the spacecraft parts name.