In the study prepared for the Macierewicz Subcommittee concerning the Tu-154M crash in Smolensk, Chris Protheroe — an internationally renowned aviation expert — committed serious errors in describing the trajectory of the Tu-154M during the final phase of flight, specifically in the section just before and after the collision with the birch tree.
Just look at the pictures from this study…
The Tu-154M reaches the birch tree on a level flight path, and then — after losing a large section of the wing and rapidly rolling onto its side — it suddenly begins a steep climb… Such things are possible… but only in Disney cartoons
There are types of aircraft that could still increase their climb rate despite losing a significant portion of the wing and rolling at a rate of 40 degrees per second — provided that their hydraulic systems, avionics controls, or other critical components were not damaged at the moment of collision with the birch tree.
For example: the Russian aerobatic aircraft Su-31
A fighter aircraft such as the Su-27, using afterburners, could in principle still increase its climb rate even after losing part of a wing and entering a rapid roll
But an aircraft like the Tu-154M, in landing configuration with extended high-lift devices and landing gear, and with the engines operating at just below nominal thrust — as stated in the MAK Report — would not have been capable of doing so
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