Liebherr-aerospace Lindenberg Gmbh

Joern Frick

Anton Gaile

Franz Weixler

The invention relates to a servo valve, in particular a two-stage or multistage electrohydraulic servo valve, having a first stage which works as a pilot stage, and a second stage which works as a power stage, wherein the second stage has a valve block and a control slide valve sleeve arranged therein and having a jacket surface (), wherein the jacket surface and/or another region of the control slide valve sleeve is preferably provided with at least one flow passage for transferring control flow and/or volume flow, and wherein a control slide valve is movably arranged in the control slide valve sleeve, wherein at least one of the flow passages is formed by a groove which is arranged in the surface of the control slide valve sleeve and which does not extend sectionally or overall in the peripheral direction of the control slide valve sleeve.

Servo valve

The invention relates to a flap actuator, in particular to a servo/spoiler actuator, comprising at least one electrohydraulic servo valve and at least one actuator which are hydraulically connected to one another, wherein the actuator comprises at least one actuator housing in and/or at which the at least one channel is arranged by means of which one or more components, preferably likewise arranged in and/or at the actuator housing, are hydraulically connected and wherein no valve block is arranged between the actuator and the servo valve.

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Waldburg, Germany

Joern Frick