ELECTRIC GENERATOR DISPOSED ON A ROTATING TURBOPROP PART

摘要

The invention relates to an electric power generating device for a propfan-type aircraft propeller rotor, whereby the propulsion unit (1) comprises a turbine engine (8) rotating at least one rotor (3a) having a plurality of blades (4a) disposed around a ring (5a) that moves with the blades, the outer wall (14a) of said ring forming part of the outer skin of the propulsion unit and said outer skin (6) being subjected to the atmospheric conditions outside the propulsion unit. The aforementioned turbine engine (8) generates a flow of hot gases that are released through a hot annular channel (10) that is concentric with the above-mentioned moving ring (5a), a portion of the surface of said channel being defined by the inner wall (15a) of the moving ring (5a). The invention includes means (16) for converting heat energy into electric energy, preferably by thermoelectric diodes (22), which means are disposed inside the moving ring (5a). The electric power generating device is particularly suitable for a device used to control the pitch of the rotors of a propfan-type propulsion unit.