Unit equipments for aircraft electric power systems

THE rapidly expanding use of electric apparatus on aircraft since 1940 has given emphasis to the development of new devices and machines of increased rating and reduced weight for aircraft electric power systems. Outstanding progress has been made in improved designs of reduced weight and space and increased performance and life. Much work still remains in device engineering to work continually toward further improvements as new materials and new techniques become available. Increase in aircraft operating demands will probably continue to mean electric power systems of increased size and improved reliability. These requirements will call for more work in development of devices of increased rating and performance. Still further, many of the devices currently used have not had the benefit of the improved design techniques and materials that are evident in some of the more advanced designs. Hence, it appears that engineering problems related to designs of individual devices ¿ device engineering ¿ will continue to be an important part of engineering for aircraft electric systems.