109 advice needed (climb)

[6S.Manu]

Originally Posted by CaptainDoggles

You are mistaken.

First of all the equations governing fluid flow, the Navier Stokes equations, have no known solution. Modern mathematics does not have a method for determining the solution unless certain simplifying assumptions are made. The only way to get an approximate solution is to use a numeric solver, and these are very computationally expensive. I guarantee that Cliffs of Dover is not running numerical solutions to the fully viscous Navier Stokes equations.

There are certain assumptions that are "good enough" for the consumer flight sim market, and these are in use in all flight sims.

You can keep using the term "6DOF FM" which I assume means that the aircraft are free to move in all six degrees of freedom. That is not the same as a flight model that corresponds 1:1 with reality.

Yep, the same for target visibility: there are still unknown variables in the equation.

IMO the road to take is still the "table based" as Tag says, both for the mandatory approximations and CPU usage.

Think about real time weather: I hope they really didn't take this road because it's madness. I think the good way is to have external CPU greedy applications who provide simplified tables, and then use these tables ingame.

I don't know very well the methods XPlane use to calculate FMs: IIRC the plane developer needs to use some external applications were the data are processed to result in the final plane package.

Have anyone tested their WW2 planes?