From the wiki:http://wiki.flightgear.org/Space_Shuttle I found:
Wing bending moment coefficient CBW between -0.019 and 0.019 at max. qbar (modeled)
At max qbar, the wing bending moment is a function of Mach number and AoA. Since Mach number is close to 1.4 in this phase of the flight, this limit basically translates into alpha between -8 degrees and 2 degrees. This can only be achieved if the orbiter is in inverted flight.
So how I understand the problem is incorrect AoA, and I should keep it between -8 and 2 degrees, but for me this happened even on 0.6 degrees of AoA and I don't understand why. Could someon explayin me what is worng, and how to prevent it?
Should I take the control and corrects the autopilot? Why does the autopilot fail to cope with it and lead to dangerous situations?
Is it possible to watch somehow the CBW value which should be between -0.019 and 0.019 at max. qbar?