Safran Aircraft Engines

Franck Emmanuel Bosco

Michel Gilbert Roland Brault

Julien Fabien Patrick Becoulet

Paul Ghislain Albert Levisse

Emmanuel Fabrice Marie Baret

Olivier Belmonte

The invention relates to a planetary gear reducer () for an aircraft turbine engine (), the reducer () comprising a sun gear () and a ring gear () which are centred on a longitudinal axis X and a planet carrier () which carries at least one planet gear () rotatably mounted about a planet axis A parallel to the longitudinal axis X, the sun gear () being rotatable about the longitudinal axis, the planet gear () meshing both with the sun gear () and the ring gear (), the planet carrier () being movable about the longitudinal axis and the ring gear () being rotationally fixed. According to the invention, the reducer () comprises an electric machine () integrated therewith and which comprises a rotor () mounted on the planet carrier () in such a way as to be rotated about the longitudinal axis X and a stator () mounted on the ring gear ().

Speed reducer equipped with an electric machine

A pump that can be a gear pump that drives a rotating body of an aircraft turbine engine such as a fan shaft, is set in rotation always in the same direction, by virtue of a transmission including an oblique double gear formed by a toothed wheel on the same side as the rotating body and meshing with two pinions connected to a shaft driving the pump through free-wheels with identical driving directions, whereas the pinions have opposite directions of rotation.

Aircraft turbomachine arrangement comprising a lubrication pump driven by two oblique gears

A speed reducer, particularly of an aircraft, includes a central sun gear mounted to rotate with a drive shaft about a rotation axis X, an annular ring gear coaxial with the X axis, and a plurality of planet gears arranged about the X axis and mounted to be movable on a planet carrier. The planet gears engages the sun gear and the annular ring gear, which extends around the planet gears. The speed reducer further includes a lubricant recovery device having a pipe for recovering lubricant discharged from the reducer by centrifuging. The recovery device has scoops mounted to pivot about a pivot axis P on a movable member of the speed reducer that rotates about the X axis between a deployed state and a rest state.

Growing community of inventors

Moissy-Cramayel, France

Franck Emmanuel Bosco