Patent ID: 7717669

Claim:
A load absorption arrangement for absorbing loads in a variable stator vane positioning system, the arrangement comprising: a piston arrangement within a housing, the housing filled with incompressible fluid; a release means operable to control the flow of the incompressible fluid from one side of the piston to the other, wherein in a normal operation position the release means prevents the incompressible fluid from flowing from one side of the piston to the other and the piston is held in a fixed position within the housing such that it transmits desired movements to variable stator vanes, wherein in response to a transient load on the piston arrangement exceeding a predetermined threshold the release means will automatically allow the incompressible fluid to flow from one side of the piston to the other, to allow the piston to move freely within the housing, and wherein in response to the transient load falling below the predetermined threshold the release means will automatically return to the normal operation position.