AUXILIARY POWER UNIT (APU) OF AN AIRCRAFT

摘要

Auxiliary power unit (APU) of an aircraft comprising a power module (1) powered by fuel (2), a gearbox (5), an electricity generator (6), and an element chosen from a compressor (4), a hydraulic pump and a combination thereof, to provide an operating mode for the production of power chosen from electric (8), pneumatic (7), hydraulic and a combination thereof; it offers the innovation of including an electric motor (9), built into the electricity generator (6), both being connected to the power module (1) via the gearbox (5a) and a main clutch (10). Furthermore the compressor (4) and/or hydraulic pump are also connected to the power module (1) via the gearbox (5a), and the main clutch (10). This architecture enables the expansion of the operating modes of the APU, increasing its performance and reducing harmful environmental effects.