Snecma

Smecma

Guy Frank Paul Dusserre-Telmon

Laurent Leeder

Jean Pierre Galivel

Zoltan Zsiga

A device for driving the rotor of an auxiliary is mounted on a turbine engine auxiliaries support which includes a pinion for driving the rotor shaft. The device includes a tubular shaft driven by the pinion and supported by a first bearing () and a second bearing () which are secured to the auxiliaries support (). The rotor shaft is coaxial with the tubular shaft and a splined coupling portion formed between the rotor shaft and the tubular shaft. By virtue of the invention, mechanical loads of the auxiliary are transmitted to a lesser extent to the rotor shaft support bearings and to the auxiliaries support gear train.

Device for driving the rotor of turbine engine auxiliary

A method of inspecting the profile of the connection zone between the cylindrical portion and the taper of a roller for a turbomachine roller bearing. The method includes taking a measurement of the surface profile of the roller; on the basis of a calculation of the first derivative of the measured profile, calculating straight line segments for each of the geometrical zones of the roller, where the straight line segments model the first derivative of the measured profile; calculating the radii of curvature of the surface profile of the roller by taking the first derivative of the straight line segments; and comparing the calculated radii of curvature with predefined threshold values in order to verify continuity thereof.

Growing community of inventors

Sivry-Courtry, France

Guy Frank Paul Dusserre-Telmon