I would tend to agree with your assessment that VMCa is Lower than VMCg.
It’s double Jeopardy when on the ground since the CG will be forward of the main gear this means that:
1) The turning moment about the main gear due to asymmetric thrust on the ground with the critical engine inoperative will be greater than in the air due to the relative positions of the CG and main gear.
2) The restoring arm between the Rudder and the Main gear whilst on the ground will be lower than the arm between the Rudder and the CG whilst airborn.
Good Luck with the Performance Exam
Cypres
Last edited by Cypres; 31st Oct 2002 at 00:57.