Snecma

Centre National Detudes Spatiales

Safran Aircraft Engines

Capaab

Philippe Nivet

Alain E Bruere

Laurent Fabbri

Fabien Tessier

Valérie Begin

Didier Matarin

Simon Fammery

An assembly comprising an upstream pipe, a downstream pipe, and a system () for measuring variation in the gas content of a two-phase flow, the assembly including: an insulating sheath (), an upstream ground (), a measurement electrode (), a guard electrode (), and a downstream ground () arranged in succession in the insulating sheath () and each presenting an identical internal section defining an internal flow duct for a two-phase flow from the upstream ground () towards the downstream ground () in line with the upstream pipe and the downstream pipe, the guard electrode () being subjected to the same potential as the measurement electrode (), the measurement electrode () measuring the capacitance of the two-phase flow relative to the upstream ground () and variation in that capacitance, the upstream ground () and the downstream ground () being electrically connected to the upstream pipe and to the downstream pipe, respectively.

Assembly for capacitive measurement of the amount of gas in a fluid flow

A sensor for determining gas content of a two phase fluid flowing in a flow line, the sensor including a sleeve configured to be arranged in the flow line in a stream of fluid. The sleeve includes a plurality of measurement electrodes that, in pairs, define a plurality of subdivision spaces subdividing a flow section of the sleeve. The sensor also includes switch and measurement members coupled to the measurement electrodes to control switching of each subdivision space of the sleeve between a measuring state and a non-measuring state. The switch and measurement members are configured to selectively switch the state of each of the subdivision spaces independently of one another.

Multi-electrode sensor for determining the gas content in a two-phase flow

The invention relates mainly to a test bench () for a radial bearing () suitable for being interposed between two members () that are movable relative to each other in rotation, the test bench being characterized in that it comprises a radial force measurement device () for measuring radial forces exerted on said bearing (), a radial acceleration measurement device () for measuring radial accelerations to which said bearing () is subjected, and an electronic calculation unit () in communication with the radial force measurement device () and with the radial acceleration measurement device (). The invention also relates to a method of establishing a behavior relationship for the radial bearing ().

Bearing test bench

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Cantiers, France

Philippe Nivet