What does 'Vmcg' stand for in aviation?

'Vmcg' stands for Minimum Control Speed on the Ground. This critical parameter in aviation refers to the minimum speed at which a pilot can maintain control of the aircraft during takeoff, particularly in the event of an engine failure while still on the ground.

Understanding Vmcg is essential for safe aircraft operation, as it dictates the speed necessary for the pilot to effectively manage directional control using the remaining engines when one engine fails during the takeoff roll. If the aircraft is traveling below this speed when an engine fails, it may not be possible to maintain safe control, leading to potential loss of control and an accident. This concept is vital for flight planning and operational safety.

The other terms provided in the choices relate to different aspects of aviation performance and control but do not accurately define what Vmcg represents. For instance, visual minimum control ground speed, while it may sound relevant, is not a recognized term in aviation. Similarly, vertical minimum climb ground speed does not pertain to ground control during takeoff. The phrase “velocity maintained during landing” does not match the definition of Vmcg, as it involves performance during the rollout after takeoff rather than on the ground immediately prior to takeoff.