LW aircraft speed specifications

[Crumpp]

Originally Posted by Crumpp

Nothing??

Really, think about it, every pilot has to account for it in their flight planning.

We will come back to it and here is a huge hint, if you recognize it.

Tell me, what is the difference between these too formula's?

Both formulat's express the same thing.





I am begining to think the men in the VVS were not so stupid, huh!

You certainly cannot explain it and you are pilot, right?

Both forumula's express Vw = V wahr = True Airspeed

This one represents the mathematical expression for True Airspeed recognized and used by the majority of the wartime world:



This one represents the mathematical expression for True Airspeed including
adaptation of the Prandtl–Glauert compressibility correction:



Such was the basis for the post war work on compressibility and compressible aerodynamics.

Since during the war, NII VVS did not have access to classified German research into compressible aerodynamics, their ability to correct Indicated Airspeed to True Airspeed to arrive at the same results as the Germans was limited.