Basic considerations in the selection of generators and batteries for aircraft

ELECTRIC systems as used on aircraft have developed from a more or less accessory status in older types of aircraft to a place of prominence in modern types of such importance that safety of operation is often dependent to a limited extent on electric-system reliability. Because of its importance the general requirements of the electric system must be conceived for a proposed new airplane design when the design is in an embryonic state. Preliminary electric-load requirements must be calculated and, as design changes are made, must be revised repeatedly in order to co-ordinate properly the electric-system design with the other design characteristics of the airplane.