Abstract: Air compressor comprising a centrifugal-type compression wheel defining an axial direction and a radial direction, an air intake opening extending circumferentially around the compression wheel and opening onto a compression part, the compression part comprising a first portion forming a volute for the ejection of compressed air which is mounted facing the compression wheel in the radial direction, and an at least partly annular second portion extending around the first portion, the second portion comprising a central orifice receiving at least part of the compression wheel and an air deflection torus, the volute being made of metallic material and the torus made of thermoplastic material filled with non-metallic elements, the thermoplastic material having a thermal expansion corresponding to that of the metallic material.

Abstract: A system for generating air includes: an electromechanical device generating an airflow equipped with an air inlet opening and an outlet; a casing extending between a first end attached to the air inlet opening and a second end located opposite the first end, the casing including two parts together defining a closed recess, each part including a hollow wall defining a channel extending between the two ends of the casing, each channel opening in front of the air inlet opening so that the electromechanical device is supplied with air routed by the channels; and at least one electronic card for power supply or control of the electromechanical device located in the recess of the casing.

Abstract: The invention relates to an electric centrifugal compressor, in particular for a turbine engine or aircraft, including an electric motor, the stator of which is supported by a casing and the rotor of which includes a shaft mounted inside the casing, driving a centrifugal compressor impeller, said, the casing having a double skin and including two substantially cylindrical, coaxial skins extending around the engine and defining between them an annular section suitable for the circulation of a first cooling air flow, one inlet of which is located at a first longitudinal end of the shaft and an outlet of which is connected to a second longitudinal end of the shaft, which supports the centrifugal compressor impeller, wherein it includes means (J) for collecting a second air flow at the outlet of the centrifugal compressor impeller, means for channelling the second air flow along the shaft up to the first end, and means for discharging the second air flow out of the casing in order to prevent same from mixing with

Abstract: The fan (20) includes: a drive motor (26), a shaft (28) coupled to the drive motor (26), a wheel (30) supported by the shaft (28), a support structure (24), including: an outer body (38), a duct (40) including a sidewall (48), the duct (40) defining, with the outer body (38), an inner space (50), and a housing (46) situated in the inner space (50) and in contact with the sidewall (48), the housing (46) defining an inner volume, a ball bearing (32, 34) inserted between the shaft (28) and the support structure (24), and a sensor (36) for measuring a mechanical parameter representative of the dynamic behavior of the bearing (32, 34), the sensor (36) being positioned in the inner volume defined by the housing (46).