What is higher, Vmcg or Vmca on a B747-400 and why?
Can any B747-4 Drivers explain, please?
I came accross an unofficial statement regarding the above topic and I am a bit confused.
The explanation was:
''Vmcg is higher because the distance between the CG and the rudder in the air is greater then the distance between the wheels and the rudder on the ground (???). This means that there is a greater moment arm in the air and so Vmca can be less than Vmcg(OK) .Also, the application of 3 degrees of bank in the air will further lower the value of Vmca. ''