Effect of operating frequency on the weight and other characteristics of missile alternators and transformers

THE extensive use of 400-cps (cycle-per-second) power systems in manned military aircraft and the consequent availability of standard 400-cps generation, conversion, and utilization components has caused this frequency to be used in most guided missiles currently in production or under development in the United States. However, as higher missile flight speeds, longer ranges, and greater accelerations are needed to achieve successful guided-missile missions, the adoption of all measures that reduce the weight and volume of the electric power system without impairing reliability and logistics must be considered. The use of a power frequency higher than 400 cps would permit substantial reductions in the weight and volume of most missile electromagnetic components and of the prime energy source. However, the determination of an optimum missile power frequency must include a coordinated study1,2 of the generation, conversion, transmission, and utilization of electric power in missiles.