Airbus Helicopters

Cédric Carlavan

Pascal Leguay

Jean-Romain Bihel

Nicolas Bourdais

The present invention relates to a servo-control () provided with at least one body () defining an inside space () together with a slider element () having a control piston () suitable for sliding in said inside space (), said control piston () subdividing said inside space () into a retraction chamber () and an extension chamber (). The servo-control () has at least one limit force detector device () comprising a casing () secured to said body () and defining a detection space (). Furthermore, a movable member () subdivides said detection space () into a first detection chamber () opening out to said inside space () and a second detection chamber (). Finally, the device includes detector means () for detecting the position of said movable member () in said detection space ().

Hydraulic actuator with a limit force detector device

The present invention relates to a friction device () for maintaining a control member () in a determined position. The device comprises a contact part () movable between a declutched stable position and a clutched stable position, and vice versa. The clutched stable position corresponds to a position in which the contact part () bears against the control member () in such a manner as to establish a determined friction force. An electromechanical drive means moves the contact part () between the two stable positions. The device includes remote control means for activating and deactivating the drive means.

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Saint Alban de Roche, France

Cédric Carlavan