Electric deicing device for propfan-type propeller blades

摘要

A deicing device for propfan-type aircraft propulsion unit blades, wherein the propulsion unit includes a turbomachine that drives in rotation at least one rotor including a plurality of blades arranged around an annular crown moving with the blades, which forms with its outer wall part of the outer envelope of the propulsion unit, the outer envelope being subjected to atmospheric conditions outside the propulsion unit, the turbomachine generating a flow of hot gases that exit via an annular hot vein, which is concentric with the moving annular crown, and defined for part of its surface by an inner wall of the moving annular crown. The deicing device includes: a mechanism transforming thermal energy into electrical energy, within the moving annular part; a mechanism transferring the generated electrical energy towards the rotor blades; and a mechanism transforming the electrical energy into thermal energy onto at least a part of the surface of the blades.

主权项

1. A deicing device for propfan-type aircraft propulsion unit blades, where the propulsion unit includes a turbomachine that drives in rotation at least one rotor including a plurality of blades, an outer envelope of the propulsion unit being subjected to atmospheric conditions outside the propulsion unit, the turbomachine generating a flow of hot gases that exit via an annular hot vein, the deicing device comprising:
an annular crown that moves with the blades, an outer wall of the annular crown forming part of the envelope of the propulsion unit and an inner wall of the annular crown defining a portion of the annular hot vein; means for transforming thermal energy, supplied by the annular vein, into electrical energy, positioned between the inner wall and the outer wall of the annular crown; means for transferring the generated electrical energy towards the rotor blades; and means for transforming the electrical energy into thermal energy and configured to be installed onto at least a part of the surface of the blades.