Originally Posted by
jimtx
Yes I need help understanding what you think "diverges". I thought the stick force per g was not linear at high AOA and the FAA does not like that for humans at the controls but there was an increase per g in the windup turn flight test.
In unaccelerated (trimmed) flight, the airframe must be stable, "hands off". The LEAP 1-B, as mounted on MAX, produces an increase in rotation of Power/Pitch couple at high angles of attack, approaching Stall.
(As I understand it). MCAS WAS Installed to lower AoA, to prevent early Stall. Whether mitigated or not, uncommanded Pitch up is divergent, imo.
MCAS increases THS AoA. Reducing elevator authority, increasing back force on stick. But it does not do so uniformly with increased rate of Pitch up
Unless you're flying an Airbus. (What's it doing)
"Unfamiliar" is not allowed, and what killed AF447. Not entirely, but played an important part.
Let's don't go there?