Centaurus,
In the instance when I was shown Mach Tuck in the sim, the aircraft gradually nosed over into an unrecoverable dive.
Even with full back stick and application of nose up trim and with the thrust levers at idle, the aircraft continued to slowly nose down further into the dive.
Not a pleasant feeling.
I have no idea of the fidelity of the sim aero model in this region of the flight, nor can I remember exactly what the Mach number was at the time, but surely someone (i.e., a TRI/TRE) here can have a go in the sim and report back.
