Electric power generation controller for use in aircraft

An electric power generation controller for use in an aircraft,

• the electric power generation controller being 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 comprising:
• 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,
• in response to determining that the monitoring rotational frequency exceeds a first threshold rotational frequency value, output a shift-down signal which makes the manual transmission perform shift-down from an upper stage to a lower stage, and
• in response to determining that the monitoring rotational frequency falls below a second threshold rotational frequency value, output a shift-up signal which makes the manual transmission perform shift-up from the lower stage to the upper stage, the first threshold rotational frequency value being set to a value larger than the second threshold rotational frequency value, wherein:
• the monitoring rotational frequency is the input rotational frequency of the manual transmission;
• and
• in response to determining that a lower limit and an upper limit in a full range of the input rotational frequency are respectively regarded as 0% and 100%, the manual transmission control section sets the first threshold rotational frequency value in a range of 30% to 50% of the full range and sets the second threshold rotational frequency value in a range of 20% to 40% of the full range.

An electric power generation controller for use in an aircraft,

• the electric power generation controller being 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 comprising:
• 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,
• in response to determining that the monitoring rotational frequency exceeds a first threshold rotational frequency value, output a shift-down signal which makes the manual transmission perform shift-down from an upper stage to a lower stage, and
• in response to determining that the monitoring rotational frequency falls below a second threshold rotational frequency value, output a shift-up signal which makes the manual transmission perform shift-up from the lower stage to the upper stage, the first threshold rotational frequency value being set to a value larger than the second threshold rotational frequency value,
• wherein the manual transmission control section sets the first threshold rotational frequency value and the second threshold rotational frequency value such that the monitoring rotational frequency exceeds the first threshold rotational frequency value in a period from take-off of the aircraft to cruising of the aircraft, and the monitoring rotational frequency falls below the second threshold rotational frequency value in a period from the cruising of the aircraft to landing of the aircraft.