Originally Posted by bubbers44
HZ39, when their high pitch reduced to 5 degrees after their 7,000 fpm climb bringing it down to 5 degrees doesn't that seem like what would happen after their zoom energy had been used up? At that point they were in a deep stall and about to fall like a rock.
At that point they had about 215 kCAS and were not stalled. If they had maintained that nose-down push a few seconds longer they would have avoided the stall altogether. Instead they pulled nose-up, increasing pitch, AoA and rate of climb, using the remaining zoom energy to reach FL380, and stalled.
P.S. Fourth update on TE-plots
Fig1v4,
Fig2v4, and
Fig3v4.