Table of Contents

Class DragEffector

Namespace
NominalSystems.Classes
Assembly
NominalSystems.Classes.dll

[Nominal] A drag effector is able to affect the forces and torques on a spacecraft as it moves through an atmosphere. This effector can be used for simple fixed drag models or more complex lookup table models.

public class DragEffector : DynamicEffector
Inheritance
DragEffector

Constructors

DragEffector()

Default constructor

protected DragEffector()

Fields

DragCoefficient

Non-dimensional drag coefficient

[Unit(UnitType.NONE)]
[Range(0, 1.7976931348623157E+308)]
public double DragCoefficient

Field Value

double

FilePath

Filename for the lookup table if it exists

[ReadOnly]
public string FilePath

Field Value

string

In_AtmosphereMsg

Atmosphere message used to read density of the atmosphere at the current position.

public AtmosphereMessage? In_AtmosphereMsg

Field Value

AtmosphereMessage

ModelType

The model type describing the type of analysis model used for this particular effector.

[Unit(UnitType.NONE)]
[ReadOnly]
public AnalysisModelType ModelType

Field Value

AnalysisModelType

ProjectedArea

Area of spacecraft projected in velocity direction

[Unit(UnitType.SQUARE_METRE)]
[Range(0, 1.7976931348623157E+308)]
public double ProjectedArea

Field Value

double

Methods

ComputeDynamics(double)

Method to compute the force and torque on the body. This will be triggered by the spacecraft on an Update call.

public override void ComputeDynamics(double time)

Parameters

time double

[s] The current integration time

LinkStateProperties(StateModel)

Links and registers any of the states from the state model that is associated with the root object.

public override void LinkStateProperties(StateModel properties)

Parameters

properties StateModel

The model that contains the list of states to fetch

LoadLookup(string)

Loads the drag effector model from a CSV file and stores the data in the model. This will be able to use a lookup based on some parameter that is configured.

public bool LoadLookup(string filePath)

Parameters

filePath string

The full file path to the particular lookup table

Returns

bool

A successful load flag

OnCreate()

Called when the 'Component' is created from the controller.

protected override void OnCreate()

OnLoad(double)

Called after all of the data has been loaded from a save state on this object. This enables any post-load operations to be performed and extra data to be loaded from the metadata.

protected override void OnLoad(double time)

Parameters

time double

[s] The current clock time of the simulation