Package org.orekit.forces
Class Panel
- java.lang.Object
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- org.orekit.forces.Panel
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- Direct Known Subclasses:
FixedPanel
,PointingPanel
,SlewingPanel
public abstract class Panel extends Object
Base class representing one panel of a satellite.- Since:
- 3.0
- Author:
- Luc Maisonobe
- See Also:
FixedPanel
,PointingPanel
,SlewingPanel
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Constructor Summary
Constructors Modifier Constructor Description protected
Panel(double area, boolean doubleSided, double drag, double liftRatio, double absorption, double reflection)
Simple constructor.
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description double
getAbsorption()
Get radiation pressure absorption coefficient.double
getArea()
Get panel area.double
getDrag()
Get drag coefficient.double
getLiftRatio()
Get drag lift ratio.abstract <T extends CalculusFieldElement<T>>
FieldVector3D<T>getNormal(FieldSpacecraftState<T> state)
Get panel normal in spacecraft frame.abstract Vector3D
getNormal(SpacecraftState state)
Get panel normal in spacecraft frame.double
getReflection()
Get radiation pressure specular reflection coefficient.boolean
isDoubleSided()
Check if the panel is double-sided (typically solar arrays).
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Constructor Detail
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Panel
protected Panel(double area, boolean doubleSided, double drag, double liftRatio, double absorption, double reflection)
Simple constructor.As the sum of absorption coefficient, specular reflection coefficient and diffuse reflection coefficient is exactly 1, only the first two coefficients are needed here, the third one is deduced from the other ones.
- Parameters:
area
- panel area in m²doubleSided
- if true, the panel is double-sided (typically solar arrays), otherwise it is the side of a box and only relevant for flux coming from its positive normaldrag
- drag coefficientliftRatio
- drag lift ratio (proportion between 0 and 1 of atmosphere modecules that will experience specular reflection when hitting spacecraft instead of experiencing diffuse reflection, hence producing lift)absorption
- radiation pressure absorption coefficient (between 0 and 1)reflection
- radiation pressure specular reflection coefficient (between 0 and 1)
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Method Detail
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getArea
public double getArea()
Get panel area.- Returns:
- panel area
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isDoubleSided
public boolean isDoubleSided()
Check if the panel is double-sided (typically solar arrays).- Returns:
- true if panel is double-sided
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getDrag
public double getDrag()
Get drag coefficient.- Returns:
- drag coefficient
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getLiftRatio
public double getLiftRatio()
Get drag lift ratio.- Returns:
- drag lift ratio
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getAbsorption
public double getAbsorption()
Get radiation pressure absorption coefficient.- Returns:
- radiation pressure absorption coefficient
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getReflection
public double getReflection()
Get radiation pressure specular reflection coefficient.- Returns:
- radiation pressure specular reflection coefficient
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getNormal
public abstract Vector3D getNormal(SpacecraftState state)
Get panel normal in spacecraft frame.- Parameters:
state
- current spacecraft state- Returns:
- panel normal in spacecraft frame
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getNormal
public abstract <T extends CalculusFieldElement<T>> FieldVector3D<T> getNormal(FieldSpacecraftState<T> state)
Get panel normal in spacecraft frame.- Type Parameters:
T
- type of the field elements- Parameters:
state
- current spacecraft state- Returns:
- panel normal in spacecraft frame
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