747-400 Vref30 V2 relationship?
Whilst I appreciate one is comparing apples and aardvarks here, does anyone know the relationship/common ground between VRef30 and V2 on the 744?
Manoeuvre speeds are referenced to "VRef30 +" however it seems V2 is used in place of VRef30 in practice. I'm just interested to know how and why it is that these two speeds, referencing two different phases of flight, should be the same (or as close as makes no difference).
Coincidence or are they linked through the Vmca relationship?