Abstract: A device for measuring vibration amplitudes of the blade tips in a turbomachine is provided. The device includes a support mounted in an orifice of a casing of a turbomachine, in which are housed two optical guides for the emission and reception of a light signal exiting inside the casing across from the tips of the blades of a turbine wheel Each optical guide includes an optical fiber connected by a mechanical connector to a needle of which the core is made of a material able to transmit a light signal and which is resistant to temperatures less than or equal to 1100° C. and which exits at its distal end in the casing across from the blade tips.

Abstract: An iso-kinetic probe for the analysis of the pollution of the gases generated by an aircraft engine is disclosed. The probe includes an air tapping tube having an upstream end inserted into a conduit wherein a gas stream flows and a gas stream inlet velocity adjustment device provided at an orifice of the tapping tube. The tube has a downstream end mounted in a fixed manner on a base. The base has an outer diameter mounted in an inner diameter d of a passage bushing. The inner diameter d of the passage bushing being sufficiently great so that the upstream end of the tube is suitable to fit through the inner diameter of the passage bushing. The probe also includes a measurement chamber having an end connected to the base.

Abstract: Iso-kinetic probe for the analysis of the pollution of the gases generated by an aircraft engine. It comprises an air tapping tube having an upstream end (24) inserted into a conduit (14) wherein a gas stream flows and gas stream inlet velocity adjustment means provided at an orifice of the tapping tube. The tube has a downstream end mounted in a fixed manner on a base (10). The base has an outer diameter mounted in an inner diameter d of a passage bushing (12). The inner diameter d of the passage bushing being sufficiently great so that the upstream end of the tube is suitable to fit through the inner diameter of the passage bushing. The probe also comprises a measurement chamber (6) having an end connected to the base.