Why Jet Aircraft Use Generators Instead of Alternators for Electrical Power

Summary

This article explains why modern jet aircraft use generators instead of alternators for their electrical systems. It covers the fundamental differences between generators (which produce DC power via commutators and brushes) and alternators (which produce AC power), and why generators are better suited for the high-power demands, reliability requirements, and specific electrical needs of aircraft. The article discusses how generators can handle higher loads, provide more stable DC power for avionics, and are more durable under the extreme conditions of flight, including temperature variations and vibration. It also touches on how modern jets have evolved to use hybrid systems with generators and rectifiers to meet both DC and AC power needs.