Originally Posted by
Smythe
The information states that MCAS trims nose down 2.5 degrees in 10 seconds. Is this all or nothing?
Is there an indication at what AoA the bump in lift occurs?
Many pages back, in another thread
LEOCh posted a schematic chart showing a nasty inflection between 10 and 15 degrees AOA, which is when MCAS kicks in. Once AOA is below 10 degrees, MCAS unwinds the nose-down trim (unless the pilots intervene with electrical trim inputs).
for want of more accurate values, the nacelle lift region stretches from AoA 8' to 14' (where the wing stalls)
See:
https://www.pprune.org/rumours-news/618252-boeing-737-max-software-fixes-due-lion-air-crash-delayed.html#post10423226
