I've read the EAD/OEB and the following passage puzzled me:
"In stabilized flight path (out of maneuvers involving an increase in load factor such as turns or
pitch variations), the Alpha Max strip (red) on the speed scale of the PFD can hide completely
the Alpha Prot strip (black and amber)"
Are Valphaprot and Valpha calculated from different parameters? The passage suggests that Valphamax is AoA and Mach dependant, while Valphaprot isn't (otherwise it would move up too?). Correct?
Then, this passage:
"With the AutoPilot (AP) engaged, and with the speed brakes in the retracted position, during
maneuvers involving an increase in load factor such as turns or pitch variations, the Alpha Prot
strip (black and amber) can move rapidly by more than 30 kt"
Why would that happen? does it mean jamming and then sudden movement of AoA vanes? If the AoA vane remained fixed during a maneouver, why would Alpha Prot move up?
