private double GetChildDragCoefficient(List <ISpaceCraft> children, double totalDragCoefficient)
{
foreach (SpaceCraftBase child in children)
{
AeroDynamicProperties props = child.GetAeroDynamicProperties;
if (props.HasFlag(AeroDynamicProperties.ExposedToAirFlow))
{
if (child.FormDragCoefficient > totalDragCoefficient)
{
totalDragCoefficient = child.FormDragCoefficient;
}
}
else if (props.HasFlag(AeroDynamicProperties.ExtendsFineness))
{
totalDragCoefficient *= child.FormDragCoefficient;
}
else if (props.HasFlag(AeroDynamicProperties.ExtendsCrossSection))
{
totalDragCoefficient = (totalDragCoefficient + child.FormDragCoefficient) / 2;
}
totalDragCoefficient = GetChildDragCoefficient(child.Children, totalDragCoefficient);
}
return(totalDragCoefficient);
}
/// <summary>
/// Recursively finds the total drag area of all surfaces exposed to air in the spacecraft.
/// </summary>
private double TotalFormDragArea()
{
double totalFormDragArea = 0;
AeroDynamicProperties props = GetAeroDynamicProperties;
if (props.HasFlag(AeroDynamicProperties.ExposedToAirFlow) ||
props.HasFlag(AeroDynamicProperties.ExtendsFineness))
{
totalFormDragArea = FrontalArea;
}
return(GetChildFormDragArea(Children, totalFormDragArea));
}
/// <summary>
/// Recursively finds the total drag of all surfaces exposed to air in the spacecraft.
/// </summary>
private double TotalFormDragCoefficient()
{
double totalDragCoefficient = 0;
AeroDynamicProperties props = GetAeroDynamicProperties;
if (props.HasFlag(AeroDynamicProperties.ExposedToAirFlow) ||
props.HasFlag(AeroDynamicProperties.ExtendsFineness))
{
totalDragCoefficient = FormDragCoefficient;
}
return(GetChildDragCoefficient(Children, totalDragCoefficient));
}
/// <summary>
/// Recursively finds the total lift of all surfaces exposed to air in the spacecraft.
/// </summary>
private double TotalLiftCoefficient()
{
double totalLiftCoefficient = 0;
AeroDynamicProperties props = GetAeroDynamicProperties;
if (props.HasFlag(AeroDynamicProperties.ExposedToAirFlow) ||
props.HasFlag(AeroDynamicProperties.ExtendsFineness) ||
props.HasFlag(AeroDynamicProperties.ExtendsCrossSection))
{
totalLiftCoefficient = LiftCoefficient;
}
return(GetMaxChildLiftCoefficient(Children, totalLiftCoefficient));
}
/// <summary>
/// Recursively finds the total lift area of all surfaces exposed to air in the spacecraft.
/// </summary>
private double TotalLiftArea()
{
double totalLiftArea = 0;
AeroDynamicProperties props = GetAeroDynamicProperties;
if (props.HasFlag(AeroDynamicProperties.ExposedToAirFlow) ||
props.HasFlag(AeroDynamicProperties.ExtendsFineness) ||
props.HasFlag(AeroDynamicProperties.ExtendsCrossSection))
{
totalLiftArea = LiftingSurfaceArea;
}
return(GetChildLiftArea(Children, totalLiftArea));
}
private static double GetChildHeight(double height, ISpaceCraft spacecraft)
{
PropertyInfo prop = spacecraft.GetType().GetProperty("GetAeroDynamicProperties");
AeroDynamicProperties props = (AeroDynamicProperties)prop.GetValue(spacecraft, null);
if (props == AeroDynamicProperties.ExtendsFineness)
{
height += spacecraft.Height;
}
foreach (ISpaceCraft child in spacecraft.Children)
{
height = GetChildHeight(height, child);
}
return(height);
}
/// <summary>
/// Recursively finds the total drag area of all surfaces exposed to air in the spacecraft.
/// </summary>
private double TotalSkinFrictionArea()
{
double totalSkinFrictionArea = 0;
AeroDynamicProperties props = GetAeroDynamicProperties;
if (props.HasFlag(AeroDynamicProperties.ExposedToAirFlow) ||
props.HasFlag(AeroDynamicProperties.ExtendsFineness) ||
props.HasFlag(AeroDynamicProperties.ExtendsCrossSection))
{
totalSkinFrictionArea += ExposedSurfaceArea;
}
foreach (SpaceCraftBase child in Children)
{
totalSkinFrictionArea += child.TotalSkinFrictionArea();
}
return(totalSkinFrictionArea);
}
private double GetChildFormDragArea(List <ISpaceCraft> children, double totalFormDragArea)
{
foreach (SpaceCraftBase child in children)
{
AeroDynamicProperties props = child.GetAeroDynamicProperties;
if (props.HasFlag(AeroDynamicProperties.ExposedToAirFlow))
{
if (child.FrontalArea > totalFormDragArea)
{
totalFormDragArea = child.FrontalArea;
}
}
else if (props.HasFlag(AeroDynamicProperties.ExtendsCrossSection))
{
totalFormDragArea += child.FrontalArea;
}
totalFormDragArea = GetChildFormDragArea(child.Children, totalFormDragArea);
}
return(totalFormDragArea);
}
private double GetMaxChildLiftCoefficient(List <ISpaceCraft> children, double totalLiftCoefficient)
{
foreach (SpaceCraftBase child in children)
{
AeroDynamicProperties props = child.GetAeroDynamicProperties;
if (props.HasFlag(AeroDynamicProperties.ExposedToAirFlow))
{
if (Math.Abs(child.LiftCoefficient) > Math.Abs(totalLiftCoefficient))
{
totalLiftCoefficient = child.LiftCoefficient;
}
}
else if (props.HasFlag(AeroDynamicProperties.ExtendsFineness) ||
props.HasFlag(AeroDynamicProperties.ExtendsCrossSection))
{
totalLiftCoefficient += child.LiftCoefficient;
}
totalLiftCoefficient = GetMaxChildLiftCoefficient(child.Children, totalLiftCoefficient);
}
return(totalLiftCoefficient);
}
private double GetChildLiftArea(List <ISpaceCraft> children, double totalLiftArea)
{
foreach (SpaceCraftBase child in children)
{
AeroDynamicProperties props = child.GetAeroDynamicProperties;
if (props.HasFlag(AeroDynamicProperties.ExposedToAirFlow))
{
if (child.LiftingSurfaceArea > totalLiftArea)
{
totalLiftArea = child.LiftingSurfaceArea;
}
}
else if (props.HasFlag(AeroDynamicProperties.ExtendsFineness) ||
props.HasFlag(AeroDynamicProperties.ExtendsCrossSection))
{
totalLiftArea += child.LiftingSurfaceArea;
}
totalLiftArea = GetChildLiftArea(child.Children, totalLiftArea);
}
return(totalLiftArea);
}
