Safran Landing Systems

Messier-Bugatti-Dowty

Nicolas Moretti

Sylvain Jaber

Gilles Eluard

Vincent Bellenger

Gérard Balducci

Sébastien Meziane

An aircraft wheel comprising a hub for mounting the wheel on a landing gear axle for rotation, and a rim with edge flanges for receiving a tire, the rim being secured to the hub by a web. The hub receives releasably a bearing box comprising two bearings, each having an inner and an outer ring mounted between a bushing for engaging on the axle with an outside wall shaped to receive the inner rings, the bushing having one end shaped as an abutment and another end shaped to receive a pre-loading nut. A sleeve extends around the bushing and has (1) an inside wall with shoulders to hold the outer rings axially and (2) an outer wall shaped to be received as a sliding fit in a bearing of the hub, with one end shaped as an abutment and another end shaped to receive a stop nut.

Aircraft wheel with a separable bearing box

The invention relates to a method for connecting in rotation an output member () of an electric motor () and an element () that is to be driven in rotation, comprising the use of at least one fusible pin () that links the output member and the element that is to be driven, and that has at least one section that is prone to fail in shear when a torque transmitted by the fusible pin exceeds a predetermined threshold. The method comprises the step of interposing, between the pin and either the output member or the element that is to be driven, at least one elastic member () comprising a first travel with a first stiffness followed by a second travel with a second stiffness greater than the first stiffness.

Method for connecting the rotor of an electric motor to an element that is to be driven

The invention relates to a telescopic actuator comprising a rod (), a hollow lead screw (), a fixed piston () comprising a first tail () which extends in the lead screw () and a head (). According to the invention, the actuator comprises a first hydraulic connection channel () extending through the first tail () to fluidically connect a first chamber (C) with a source of hydraulic fluid (), and the channel () comprises first damping means suitable for slowing down the rod () when the latter is depressed by regulating a hydraulic fluid flow rate in the first channel provoked by the depression of the rod.

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Velizy-Villacoublay, France

Nicolas Moretti