Transactions section: A-C contactors for aircraft

Use of a-c power systems on aircraft presents the problem of providing switching means. Contactors with the desired characteristics and suitable size and weight have not been available. Analysis of operating conditions, contactor size requirements, and performance characteristics provide a basis of design of a group of contactors to meet the needs of present and projected aircraft. These designs can meet aircraft size limitations and be capable of handling the circuits under all foreseen normal and emergency requirements.