Abstract: The present application concerns a test engine hood for a turbine engine, such as a double flow turbine. The test hood allows replacement of a flight engine hood during tests on a test bench on the ground where the temperature conditions could damage the flight hood. The test hood includes a tubular wall of carbon-fiber epoxy composite, and metal flanges upstream and downstream. To provide thermal protection, the test hood includes a layer of silicone with a majority of polysiloxane. The layer covers the entire inner surface of the wall to create a barrier. The present application also concerns a method for testing a turbine engine on a test bench, where the turbine engine is fitted with a test casing. The present application also concerns a use of silicone for thermal insulation of the inside of the test hood of the turbine engine on a test bench on the ground.

Abstract: The invention relates to a test bench for an axial turbine engine, especially for a turbojet, including: a chamber intended to accommodate the turbine engine; a vertical inlet channel connected to the chamber upstream of the turbine engine; and a vertical outlet channel connected to the chamber downstream of the turbine engine; at least one wind power engine capable of converting the kinetic energy of a portion of the gas stream generated by the turbine engine into mechanical energy; the wind power engine or at least one of the wind power engines is situated in the vertical inlet channel and/or the vertical outlet channel. The invention also relates to a process for recovering energy of such a test bench.

Abstract: The invention relates to a rotating electric machine, such as a dynamometer. The rotor of the machine comprises a circular row of resultant magnetic poles of which the polarity forms an alternation of opposed poles. The resultant poles each include a pair of permanent magnets in a “V”, each equipped with a north pole N, a south pole S, and opposed faces, where the magnet poles are located. In each resultant pole the magnets are disposed so as to have faces having identical polarities, which faces are oriented radially outwardly, facing towards one another, thus forming therebetween an angle ? between 90° and 110°, which makes it possible to increase the efficiency. The invention also relates to a turbomachine test stand equipped with a dynamometer enabling a recovery of electrical energy. The invention also relates to a hybrid motor vehicle propelled by the rotating electric machine.

Abstract: The invention relates to a test bench for an axial turbine engine, especially for a turbojet, including: a chamber intended to accommodate the turbine engine; a vertical inlet channel connected to the chamber upstream of the turbine engine; and a vertical outlet channel connected to the chamber downstream of the turbine engine; at least one wind power engine capable of converting the kinetic energy of a portion of the gas stream generated by the turbine engine into mechanical energy; the wind power engine or at least one of the wind power engines is situated in the vertical inlet channel and/or the vertical outlet channel. The invention also relates to a process for recovering energy of such a test bench.

Abstract: The present application concerns a test engine hood for a turbine engine, such as a double flow turbine. The test hood allows replacement of a flight engine hood during tests on a test bench on the ground where the temperature conditions could damage the flight hood. The test hood includes a tubular wall of carbon-fibre epoxy composite, and metal flanges upstream and downstream. To provide thermal protection, the test hood includes a layer of silicone with a majority of polysiloxane. The layer covers the entire inner surface of the wall to create a barrier. The present application also concerns a method for testing a turbine engine on a test bench, where the turbine engine is fitted with a test casing. The present application also concerns a use of silicone for thermal insulation of the inside of the test hood of the turbine engine on a test bench on the ground.

Abstract: The invention relates to a rotating electric machine, such as a dynamometer. The rotor of the machine comprises a circular row of resultant magnetic poles of which the polarity forms an alternation of opposed poles. The resultant poles each include a pair of permanent magnets in a “V”, each equipped with a north pole N, a south pole S, and opposed faces, where the magnet poles are located. In each resultant pole the magnets are disposed so as to have faces having identical polarities, which faces are oriented radially outwardly, facing towards one another, thus forming therebetween an angle ? between 90° and 110°, which makes it possible to increase the efficiency. The invention also relates to a turbomachine test stand equipped with a dynamometer enabling a recovery of electrical energy. The invention also relates to a hybrid motor vehicle propelled by the rotating electric machine.

Abstract: An axial sealing device for a turbomachine bearing, having a rotary ring fixed onto a sleeve of the shaft of the turbomachine, and a static ring linked to a fixed support by means of an anti-rotation blocking system and axially pushed against the rotary ring by means of springs. The static ring is formed by the assembly of at least two juxtaposed annular segments that form ducts at their junction for the injection of parietal air up to the interface of the two rings, which has lift slots.

Abstract: The present invention relates to a sealing device for a turbomachine bearing, comprising a rotary ring mounted on the portion of the sleeve located on the oil chamber side and a segmented carbon ring which is not in contact with the shaft or with the seal support. The segmented carbon ring bears axially against an annular support by springs. The radial face of the segmented carbon ring engages with the rotary ring via the radial face of the rotary ring by lift slots machined into the rotary ring so as to ensure dynamic sealing during operation, with no friction between the radial faces.