/// <exception cref="ArgumentException">Invalid vertical mode.</exception>
private double FuelFlow(double grossWt, VerticalMode mode)
{
switch (mode)
{
case VerticalMode.Climb:
return(fuelData.ClimbFuelFlow(grossWt));
case VerticalMode.Cruise:
return(fuelData.CruiseFuelFlow(grossWt));
case VerticalMode.Descent:
return(fuelData.DescentFuelFlow(grossWt));
default:
throw new ArgumentException();
}
}
public static double EstimatedAvgWt(this FuelDataItem item,
double distance, double landingWt)
{
double grossWt = landingWt;
const int iteration = 2;
for (int i = 0; i < iteration; i++)
{
var alt = item.OptCruiseAlt(grossWt);
var ktas = Ktas(item.CruiseKias(grossWt), alt);
var time = distance / ktas * 60.0;
var ff = item.CruiseFuelFlow(grossWt);
grossWt = landingWt + ff * time / 2.0;
}
return(grossWt);
}
