Questions about A320

[Jet II]

Alpha Max

Indicated on PFD - It represents the speed corresponding to the maximum angle of attack that the aircraft can attian in Pitch Normal Law

Alpha Floor

Is the protection that commands TOGA thrust regardless of the positions of the thrust levers. Protection available in auto thrust from lift-off to 100 ft RA on approach.

ASI

Red Strip = Alpha Max speed
Black/amber Strip = Alpha protection speed

Ground Speed Mini

In approach the managed speed target is the Ground Speed Mini target computed by the FMGS. The purpose of the Ground Speed Mini function is to take advantage of the aircraft inertia, when wind conditions vary during the approach. It does this by providing a speed target, when the aircraft flies this target the energy of the aicraft is maintained above a minimum level ensuring standard aerodynamic margins versus stall.