Hydac Technology Corporation

Airbus Operations Gmbh

Technische Universitaet Hamburg-harburg

Technische Universitat Hamburg-harburg

Frank Thielecke

Peter Kloft

Robert Marinus Behr

Arne Waitschat

Herbert Baltes

Tanno Zantz

Stefan Benischke

Kevin Poole

David Arriola

A damping device, particularly for damping or avoiding pressure surges such as pulses, in hydraulic supply circuits, preferably in the form of a silencer, includes a damping housing that surrounds a damping chamber (), has at least one fluid inlet (), has at least one fluid outlet () and has a fluid receiving chamber () extending between the fluid inlet () and the fluid outlet (). During operation of the device, a fluid flow crosses the damping chamber () in a through-flow direction (), coming from the fluid inlet () in the direction of the fluid outlet (). At least parts of the fluid receiving chamber () extend in at least one extension direction transversely with respect to the through-flow direction (). The fluid receiving chamber () immediately adjoins the fluid inlet () and the fluid outlet () and is delimited by at least one yielding wall part ().

Damping device

A damping device for damping or avoiding pressure surges, such as pulses, in hydraulic supply circuits has a damping housing () surrounding a damping chamber and having a fluid inlet () and a fluid outlet (). A fluid receiving chamber extends between the fluid inlet () and the fluid outlet (). During operation of the device, a fluid flow crosses the damping chamber in a throughflow direction (), from the fluid inlet () to the fluid outlet (). Parts of the fluid receiving chamber extend transversely with respect to the throughflow direction (). More than one fluid receiving chamber is arranged one after the other in the throughflow direction (). The fluid receiving chamber that is first upstream and the fluid receiving chamber that is last downstream immediately adjoin the fluid inlet () and the fluid outlet (), respectively.

A damping device, in particular for damping or avoiding pressure surges, such as pulses, in hydraulic supply circuits, preferably in the form of a silencer, has a damping housing surrounding a damping chamber and having a fluid inlet () and a fluid outlet (). A fluid receiving chamber () extends between the fluid inlet and the fluid outlet. A fluid flow crosses the damping chamber in a throughflow direction () from the fluid inlet () to the fluid outlet (). Parts of the fluid receiving chamber () extend transversely with respect to the throughflow direction (). The fluid receiving chamber () immediately adjoins the fluid inlet () and the fluid outlet (). A guide element () is provided in the damping chamber. The fluid flow flows against the guide element changing the flow speed of the flow at least in sections.

A damping device damps or prevents pressure shocks, such as pulsations, in hydraulic supply circuits, preferably in the form of a silencer, and has a damping housing () surrounding a damping chamber (), with a fluid inlet () and a fluid outlet (). A fluid receiving chamber () extends between the fluid inlet and fluid outlet. During operation of the device, a fluid flow coming from the fluid inlet () in a through-flow direction () traverses the damping chamber () toward the fluid outlet (). Parts of the fluid receiving chamber () extend in a direction transverse to the through-flow direction (). The fluid receiving chamber () is located directly adjacent to the fluid inlet () and the fluid outlet ().

A method and a system for monitoring the operational state of a pump including acquiring a set characteristic diagram of the pump, the characteristic diagram of the pump being defined by a functional relationship between a first pump operating parameter characteristic of the operational state of the pump and a second pump operating parameter characteristic of the operational state of the pump. Subsequently, an actual characteristic diagram of the pump is acquired when the pump is installed in a higher-level system, in particular an aircraft system, and is running. Finally, the actual characteristic diagram of the pump is compared with the set characteristic diagram of the pump.

Method and system for monitoring the operational state of a pump

A drive system for driving control surfaces of an aircraft includes at least one drive unit, at least one main shaft connectable to the at least one drive unit and at least two adjusting units for each control surface to be driven. Each adjusting unit includes a differential, two rotary actuators and an adjustment lever. The differential has at least one input means and two output means and is adapted to transfer torque from the at least one input means to the two output means. The input means is connectable to the main shaft, the two rotary actuators each have a rotation input means and a motion output means. The rotation input means is connectable to one of the output means of the differential each and the adjustment lever is connected to the motion output means of both rotary actuators.

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Buxtehude, Germany

Frank Thielecke