Re altitude loss and other data, Dozy, what was your experience in the sim? Our sim exercises usually took about 20,000+ ft. for recovery.
Dozy, edited/re-posted for clarity.
With weights, CG, SAT mirroring AF447 and a bit of turbulence, following loss of airspeed (all 3 ADRs out), the sim was pitched up at FL350 and held in the climb until stalled, (THS reached 13.6deg). Shortly after the stall we returned the ADRs for use during the balance of the exercise, (to see the FPV during the stall).
Post-apogee (approx FL360), full forward stick was applied and held.
At FL330 the pitch was 8deg ND.
At FL310 the AoA (using FPV) was approx 40deg and the VSI was 18000fpm +. Pitch was about 14deg ND which was all the pitch that could be obtained.
Pitch slowly reduced to about 10degND still with full forward stick. As it was held the THS unwound and returned to normal settings.
We could watch the AoA reducing as the FPV slowly climbed "up" the PFD from past the red ND warning arrows below 30deg pitch marks.
Thirty seconds after the first Stall Warning passing through FL270 the AoA had reduced to 30deg, descent rate was 16000fpm.
Ten seconds later at FL255 the AoA was 12deg, CAS was 250kts, VSI was 7400fpm.
At FL245 the stall warning stopped 40 seconds after it began, the AoA was 10degND, M0.658, VSI 7000fpm down, CAS 278kts.
From an AoA of 40deg to 10deg took 24 seconds and about 6000ft. This exercise took about 22000ft; some were less.
Overspeed was never a problem nor was a secondary stall if one was gentle, (took about another 6000ft IIRC)