Goodrich Actuation Systems Limited

Goodrich Actuation Systems Sas

Christian Dorval

Isabelle Port-Robach

Rui Amaral

Raphaël Medina

Olivier Pansanel

Pascal Lardy

Patrice Nevoret

The assembly comprises a first and a second nut intended to cooperate with a screw in particular provided in an adjustable tailplane actuator for an aircraft, and a mechanical connection between the first and the second nut comprising means for fusible driving of the second nut by the first nut, in which the mechanical connection also comprises adjustable spacing means forming a wedge between the first and second nuts.

Mechanical connection between a primary nut and secondary nut

The invention relates to an actuator for actuating a moving member, said actuator essentially comprising a screw and at least two nuts engaged on the screw, relative movement between the screw and the nuts generating said actuation, said actuator further comprising a pin through which an electrical link passes, a force-transmitting element placed in the path of the force between the screw and the moving member via one of the nuts, and a mechanical extension of said force-transmitting element that extends to the vicinity of the other nut, the pin passing both through the mechanical extension and through an element coupled to the other nut so that any abnormal shift in the force-transmitting element relative to the screw results in shear between its mechanical extension and the element coupled to the other nut, causing the pin to break and causing the electrical link to be broken.

Use of an electrified pin to detect load transfer to a secondary nut in a screw actuator

Growing community of inventors

Colombes, France

Christian Dorval