公开(公告)号：US10711880B2

公开(公告)日：2020-07-14

申请号：US15921490

申请日：2018-03-14

Applicant: GE Avio S.r.l.

Inventor： Michele Gravina ,  Giuseppe Casamirra

IPC: F16H1/28 ,  F16H57/08 ,  F02C3/107

Abstract: A planet-carrier for an epicyclic gearing is provided with a ring having a plurality of plate sectors and a plurality of connection sectors, alternating with one another about a first axis; a connection structure connects in an angularly fixed manner the connection sectors to a rotating member or to a static member; the planet-carrier is also provided with a plurality of pins, which are fixed with respect to the plate sectors and protrude in opposite directions from the plate sectors along respective second axes, parallel and eccentric with respect to the first axis; each pin has two coaxial outer surfaces, adapted to support respective planet gears of the gearing and symmetrical to each other with respect to a symmetry plane orthogonal to the first axis; the plate sectors are asymmetrical with respect to this symmetry plane.

公开(公告)号：US20200300175A1

公开(公告)日：2020-09-24

申请号：US16811582

申请日：2020-03-06

Applicant: GE Avio S.r.l.

Inventor： Giulio Zagato ,  Saypen Baraggia Au Yeung ,  Giuseppe Casamirra

IPC: F02C7/36 ,  F16H1/22

Abstract: In one exemplary embodiment of the present disclosure a gas turbine engine defining a radial direction and an axial direction is provided. The gas turbine engine includes a stationary frame, a compressor and a turbine, the compressor or the turbine including a first plurality of rotor blades and a second plurality of rotor blades, the first plurality of rotor blades and second plurality of rotor blades alternatingly spaced along the axial direction and rotatable with one another; and a gearbox including a first gear coupled to the first plurality of rotor blades, a second gear coupled to the second plurality of rotor blades, and an intermediate gear positioned between the first gear and the second gear and coupled to the stationary frame, the intermediate gear defining an axis of rotation, the axis of rotation defining an angle with the radial direction less than about 75 degrees.