Abstract
The airworthiness compliance of the ground minimum control speed (VMCG) must be shown before the type certificate of a transport category airplane is issued under CCAR-25. A method to calculate VMCG based on mathematical simulation is provided. All forces and moments act on the aircraft in the takeoff run are considered in this method. The model of the pilot's operation in airworthiness compliance flight test of VMCG is established in this method, and the time interval between the instant at which the critical engine is failed and the instant at which the pilot recognizes and reacts to the engine failure is considered in the model. Based on this method, VMCG is obtained through the mathematical simulation of the takeoff run of an aircraft after the critical engine is failed. VMCG calculated by the method presented in this paper can be used to guide the airworthiness design and VMCG flight tests of an aircraft.
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