Design and protection of A-C power systems for aircraft instruments

THE role of modern military aircraft is inexorably reflected in its electric system. The aircraft electric system must maintain its continuity to complete its mission. Beyond that, the utmost of reliability and continuity is required of the electric power system supplying “safety of flight” items such as the Gyro horizon instrument, the turn and bank instrument, the fuel quantity instrument, the engine instruments, and the fuel flow instruments. These instruments when inoperative can easily cause loss of an aircraft.1