ELECTRIC POWER GENERATION CONTROLLER FOR USE IN AIRCRAFT

An electric power generation controller for use in an aircraft is a controller of an electric power generating apparatus including a manual transmission which changes speed of rotational power of an aircraft engine, transmits the rotational power to an electric power generator, and includes a plurality of gear stages. The electric power generation controller includes: a rotational frequency receiving section configured to receive an input rotational frequency or an output rotational frequency of the manual transmission as a monitoring rotational frequency; and a manual transmission control section configured to, when the monitoring rotational frequency exceeds a first threshold, output a shift-down signal which makes the manual transmission perform shift-down from an upper stage to a lower stage, and when the monitoring rotational frequency falls below a second threshold, output a shift-up signal which makes the manual transmission perform shift-up from the lower stage to the upper stage, the first threshold being set to a value larger than the second threshold.