[Crumpp]

Nope, I claim that calculating the speeds and power required for constant Cl at varying weight is different problem than calculating effect of weight to top speed of the plane at constant power.

Ok then. All I am asking you to do is just explain what is different.

Is the acceleration of gravity different from cruise to maximum level speed? Does mass change?

The facts are there is no change in the affect of weight.

There is change in the aircraft's ability to compensate for that affect but the affect of weight is exactly the same.

Basicly your calculation does not answer to the same question than mine and your calculation does not answer the question in hand while my does.

The parametric study I showed you answers the question, "What is the affect of weight on an aircraft".

Yours answers the question, "What is the specific performance of this aircraft under one specific condition of flight".

They are not the same thing. You don’t seem to have enough of grasp of aerodynamics to understand that.

We have been calculating the steady flying conditions so far while your questions are about unsteady conditions.

Do you know the significance if you have been describing two different aircraft at two different weights mathematically in steady flight while I have been describing one that suddenly increases in weight and moves to equilibrium?

It makes absolutely not one single tiny shred of difference. The affect is still the same.

My question is asking for you to explain in detail what happens when the weight of an aircraft is increased at best range cruise and to explain in detail what happens at maximum level speed.

If you are not capable of explaining it just say so and I will do it for you.

All the best,

Crumpp