How will the alpha lock function intervene when performing a takeoff at heavy weights on the A320?
Alpha Lock is a protection that will prevent surfaces retraction after take off if the angle of attack (ALPHA)is high for the next retracted position of the flaps/slats lever. So even if the pilot puts the selector in the retraction direction the order will be postponed till the angle of attack decreases. This is managed by the Fly By Wire logics. The logics takes into account more particularly the angle of attack and the configuration speed limits.