Abstract: A method for controlling a control surface multirod actuator arrangement and the arrangement including: a first and a second multirod actuator configured to move or clamp around a first set of piston rods; a third multirod actuator configured to move or clamp around a second set of piston rods; a control unit configured to control motion of the first set of piston rods in a first motion mode and to control motion of the second set of piston rods in a second motion mode. Steps are moving at least one piston rod of first set of piston rods and/or clamping in parked position at least one piston rod of the second set of piston rods.

Abstract: Provided is an actuator apparatus including a positioning actuator device configured to position a first carrier member of the actuator apparatus. The positioning actuator device includes a first hydraulic fluid actuator having a first clamping means and a second hydraulic fluid actuator having a second clamping means, wherein the first and second hydraulic fluid actuator are configured to alternately clamp around a guide arrangement for moving the positioning actuator device along the guide arrangement. The first carrier member is provided with a first coupling member configured to be releasable coupled to the positioning actuator device. A method of positioning a first carrier member by means of the positioning actuator device is provided.

Abstract: A fluid actuator arrangement comprises a piston rod member, at least two cylinders each said cylinder having a piston body, and a clamping mechanism associated to each cylinder. Each clamping mechanism is arranged to engage and disengage the piston body of the cylinder to the piston rod member. The fluid actuator arrangement comprises further a control element arranged to control a back and forward movement of the respective piston body so that forward movement is slower than the backward movement and to control the movement of the respective piston bodies in relation to each other such that at least one piston body is always moving forward and such that an overlap exists wherein at least two of the piston bodies are moving forward simultaneously during a cycle.

Abstract: A method for controlling a control surface multirod actuator arrangement and the arrangement including: a first and a second multirod actuator configured to move or clamp around a first set of piston rods; a third multirod actuator configured to move or clamp around a second set of piston rods; a control unit configured to control motion of the first set of piston rods in a first motion mode and to control motion of the second set of piston rods in a second motion mode. Steps are moving at least one piston rod of first set of piston rods and/or clamping in parked position at least one piston rod of the second set of piston rods.

Abstract: A modular fluid actuator system is provided for generating a relative motion between a first fluid transfer chamber of a first module unit and a piston rod arrangement in an axial direction. The modular fluid actuator system comprises a fluid supply, a valve device coupled to the fluid supply and to the first fluid transfer chamber, a control unit coupled to the valve device for controlling the relative motion between the first fluid transfer chamber and the piston rod arrangement, the first fluid transfer chamber is coupled to a first sleeve portion exhibiting a first expandable hollow space arranged for fluid communication with the valve device via the first fluid transfer chamber.

Abstract: A fluid actuator arrangement comprises a first cylinder housing including a first head member and a second head member; a first piston body is slidable arranged in said first cylinder housing; the first piston body divides the first cylinder housing interior into a first cylinder chamber and a second cylinder chamber, at least the first cylinder chamber is coupled to a fluid supply. The first piston body exhibits a first through-bore and a second through-bore that extend through the first piston body in an axial direction; a first piston rod is arranged slidable in the first through-bore and a second piston rod is arranged slidable in the second through-bore; and the first through-bore comprises a first engagement and disengagement device and the second through-bore comprises a second engagement and disengagement device, which are arranged for providing individual engagement or disengagement to or from the respective first and second piston rod.

Abstract: A method for operating a telescopic device and the elongated telescopic device per se comprises a support element formed to encompass first and second telescopic element mounted so as to be telescopically slidable relative each other in a longitudinal direction; the support element comprises a support element fluid actuator assembly; the first telescopic element is arranged to encompass the second telescopic element and comprises a first fluid actuator assembly. The support element fluid actuator assembly is fixed to an interior portion of the support element and is arranged for engagement or disengagement to a first envelope surface of the first telescopic element and wherein the first fluid actuator assembly is fixed to a first interior portion of the first telescopic element and is arranged for engagement or disengagement to a second envelope surface of the second telescopic element.

Abstract: An elongated fluid actuator arrangement includes a cylinder body comprising a first and second end portion. A piston body comprising a piston force area forming portion and a sleeve portion, which extends through said first and second end portions and exposes first and second outer section outside the cylinder body. A piston rod extends coaxially through said sleeve portion. The arrangement comprises a first and second extendable and contractible cover member each joined to the cylinder body and to the respective sleeve portion outer section.

Abstract: The present invention regards a fluid actuator arrangement comprising a first cylinder housing comprising a first piston body comprising a first through-bore and a first clamping element provided for releasable clamping onto a first piston rod. The first piston body comprises a second through-bore and a second clamping element provided for releasable clamping onto a second piston rod; a first static holding unit comprising a first clamping unit provided for releasable clamping onto the first piston rod; a second clamping unit provided for releasable clamping onto the second piston rod; a first base member coupled to the first piston rod via a first universal joint for providing a rotational motion of the first base member during longitudinal motion of the first piston rod. The present invention also regards a method for providing a rotational motion of a first base member.

Abstract: A fluid actuator arrangement comprises a first cylinder housing including a first head member and a second head member; a first piston body is slidable arranged in said first cylinder housing; the first piston body divides the first cylinder housing interior into a first cylinder chamber and a second cylinder chamber, at least the first cylinder chamber is coupled to a fluid supply. The first piston body exhibits a first through-bore and a second through-bore that extend through the first piston body in an axial direction; a first piston rod is arranged slidable in the first through-bore and a second piston rod is arranged slidable in the second through-bore; and the first through-bore comprises a first engagement and disengagement device and the second through-bore comprises a second engagement and disengagement device, which are arranged for providing individual engagement or disengagement to or from the respective first and second piston rod.

Abstract: An aircraft secondary control system comprises a rod arrangement of a driving actuator, configured for performing the motion. The rod arrangement is coupled to the aircraft secondary control member via a linkage arrangement. The driving actuator comprises a first engagement and disengagement device of a piston body and comprises a second engagement and disengagement device, each of which being configured for alternately and/or simultaneously engaging said rod arrangement. The piston body is arranged in a cylinder body and is configured to make a working stroke from a first position to a second position.

Abstract: A fluid actuator arrangement comprises a piston rod member, at least two cylinders each said cylinder having a piston body, and a clamping mechanism associated to each cylinder. Each clamping mechanism is arranged to engage and disengage the piston body of the cylinder to the piston rod member. The fluid actuator arrangement comprises further a control element arranged to control a back and forward movement of the respective piston body so that forward movement is slower than the backward movement and to control the movement of the respective piston bodies in relation to each other such that at least one piston body is always moving forward and such that an overlap exists wherein at least two of the piston bodies are moving forward simultaneously during a cycle.

Abstract: A method for operating a telescopic device and the elongated telescopic device per se comprises a support element formed to encompass first and second telescopic element mounted so as to be telescopically slidable relative each other in a longitudinal direction; the support element comprises a support element fluid actuator assembly; the first telescopic element is arranged to encompass the second telescopic element and comprises a first fluid actuator assembly. The support element fluid actuator assembly is fixed to an interior portion of the support element and is arranged for engagement or disengagement to a first envelope surface of the first telescopic element and wherein the first fluid actuator assembly is fixed to a first interior portion of the first telescopic element and is arranged for engagement or disengagement to a second envelope surface of the second telescopic element.

Abstract: A modular fluid actuator system is provided for generating a relative motion between a first fluid transfer chamber of a first module unit and a piston rod arrangement in an axial direction. The modular fluid actuator system comprises a fluid supply, a valve device coupled to the fluid supply and to the first fluid transfer chamber, a control unit coupled to the valve device for controlling the relative motion between the first fluid transfer chamber and the piston rod arrangement, the first fluid transfer chamber is coupled to a first sleeve portion exhibiting a first expandable hollow space arranged for fluid communication with the valve device via the first fluid transfer chamber.

Abstract: The present invention regards an elongated fluid actuator arrangement comprising a first and second cylinder housing (3, 5) extending in a longitudinal direction (X), respective housing (3, 5) encompasses a first respective a second piston body (7, 9). The respective piston body (7, 9) divides the respective cylinder housing (3, 5) in a first and second cylinder chamber (11, 13). The arrangement (1) is adapted for connection to a valve member means (15) of a fluid supply device (17). A piston rod member (19) extending through said respective first and second piston bodies (7, 9). The first piston device (7) comprises a piston rod engagement and disengagement means (29), which is adapted to engage or disengage the first piston device (7) to/from the piston rod member (19), wherein an engagement area (A2), defined by an engagement zone between the first piston body (7) and the piston rod member (19), is larger than a cross-sectional piston area (A1) of the first piston body (7).

Abstract: An elongated fluid actuator arrangement includes a cylinder body comprising a first and second end portion. A piston body comprising a piston force area forming portion and a sleeve portion, which extends through said first and second end portions and exposes first and second outer section outside the cylinder body. A piston rod extends coaxially through said sleeve portion. The arrangement comprises a first and second extendable and contractible cover member each joined to the cylinder body and to the respective sleeve portion outer section.

Abstract: The present invention regards an elongated fluid actuator arrangement comprising a first and second cylinder housing (3, 5) extending in a longitudinal direction (X), respective housing (3, 5) encompasses a first respective a second piston body (7, 9). The respective piston body (7, 9) divides the respective cylinder housing (3, 5) in a first and second cylinder chamber (11, 13). The arrangement (1) is adapted for connection to a valve member means (15) of a fluid supply device (17). A piston rod member (19) extending through said respective first and second piston bodies (7, 9). The first piston device (7) comprises a piston rod engagement and disengagement means (29), which is adapted to engage or disengage the first piston device (7) to/from the piston rod member (19), wherein an engagement area (A2), defined by an engagement zone between the first piston body (7) and the piston rod member (19), is larger than a cross-sectional piston area (A1) of the first piston body (7).

Abstract: The present invention regards a fluid actuator arrangement comprising a first and second cylinder of a cylinder arrangement, a piston rod arrangement, a first and second piston device associated with the piston rod arrangement, wherein respective first and second piston device divides respective first and second cylinder into a first and second chamber provided for connection to a valve device of a fluid supply device. The first piston device comprises a piston rod engagement and disengagement device, which is adapted to engage or disengage the first piston device to/from the piston rod arrangement. The invention can be put into use for aircraft, such as commercial aircraft designed for long distance flights, for construction industry, jacking systems for oil well drilling and service platforms, agricultural equipment industry, marine industry, crane manufacture industry, and others.

Abstract: An arrangement for monitoring a supply within a platform. A sensor is arranged to generate sample values relating to a fluid characteristic variable, wherein the fluid is fed by the supply within the platform. A processor is arranged to receive a plurality of sample values from the sensor. The processor, is arranged to generate an absolute value of a difference between each of the received plurality of sample values and a subsequent associated sample value, wherein the received sample values are generated during a predetermined time period. The processor is arranged to determine an indication number corresponding to the number of the generated absolute values which are greater than a predetermined threshold value. The sample collecting process is only active when a criterion comprising a stable pump in a no load condition and all hydraulic consumers are in a resting position or close to a resting position is fulfilled.

Abstract: The present invention relates to a submersible plant for producing energy. The submersible plant comprises at least one turbine (9) and is characterized in that said turbine (9) is mounted on a stream-driven vehicle (3) and in that said stream-driven vehicle is secured in a structure by means of at least one wire (6).