. . . . . . . . . . . . . . . . . . . . "Control Mass."@en . . . . . . . . . . . . . . . "The upper design gross mass limit of a system at a specified mission event against which margins are calculated after accounting for basic masses of flight hardware, MGA, and uncertainties. It may include propellants, crew, and cargo." . . . . . . . . . . . . . . . . .