Originally Posted by
LarryJ
The 737 does not use any type of relaxed stability system. MCAS is not a stability augmentation system.
A new, clean-sheet design to replace the 737 likely would incorporate some form(s) of relaxed stability in order to improve efficiency.
According to Boeing's April 17, 2019, update MCAS is a system that enhances “pitch stability”:
“The Maneuvering Characteristics Augmentation System (MCAS) flight control law was designed and certified for the 737 MAX to enhance the pitch stability of the airplane – so that it feels and flies like other 737s.”
Boeing: The 737 MAX MCAS Software Enhancement