private IPlanNode NextPlanNode(IPlanNode prev, IPlanNode old)
{
var ff = fuelData.ClimbFuelFlow(prev.GrossWt);
var stepDis = prev.Distance(prev.NextPlanNodeCoordinate);
var stepTime = stepDis / prev.Gs * 60.0;
var stepFuel = stepTime * ff;
var climbGrad = fuelData.ClimbGradient(prev.GrossWt);
var climbRate = climbGrad * prev.Ktas / 60.0 * NmFtRatio;
var alt = Math.Min(prev.Alt + stepTime * climbRate, old.Alt);
var grossWt = prev.GrossWt - stepFuel;
var fuelOnBoard = prev.FuelOnBoard - stepFuel;
var timeRemaining = prev.TimeRemaining - stepTime;
return(GetNode(old, alt, grossWt, fuelOnBoard, timeRemaining));
}
/// <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();
}
}
