Abstract: An apparatus for unfolding a rolled-up, elongate hollow body provides for stabilizing the unfolding body in a transition region. The hollow body has a closed cross-sectional profile. The unfolding mechanism has a winding core on which the hollow body is rolled up and compressed in a first state, and, by rotation, transfers the hollow body to an unrolled and unfolded second state. The hollow body is guidable between an outer fixing element positioned outside the hollow body and an inner supporting element which lies against an inner wall of the hollow body. The inner supporting element and outer fixing element interact in a form-fitting and/or force-fitting manner for axial positional fixing of the inner supporting element without a directed mechanical connection.

Abstract: The invention relates to a wing structure (1) for flying objects, comprising a wing leading edge (4) and a wing box (2), wherein the wing leading edge should be arranged on the wing box in particular in a detachable manner. For this purpose, the wing leading edge is connected to the wing box within a joining segment (9) and to rib extensions (11) of the wing box by means of fastening element (12) near the nose segment (15) such that a fastening-free segment (14) extends on the top side (16) of the wing leading edge in order to compensate thermal deformation during flight.

Abstract: The invention relates to an apparatus for unfolding a rolled-up, elongate hollow body, having: at least one elongate hollow body which has a closed cross-sectional profile, and an unfolding mechanism which has a winding core on which the elongate hollow body is rolled up and compressed in a first state and which, by rotation, transfers the elongate hollow body from the first state into an unrolled and unfolded second state, wherein the unfolding mechanism has a supporting device, wherein the supporting device has an inner supporting element which is arranged in a cavity within the elongate hollow body and at least partially lies against the inner wall of the elongate hollow body, and has an outer fixing element which is arranged outside the elongate hollow body in the region of the inner supporting element such that the elongate hollow body can be guided through between the outer fixing element and the inner supporting element, wherein the inner supporting element interacts with the outer fixing element in

Abstract: The invention relates to a method for producing a fiber-composite hollow component from a fiber-composite material which contains at least one fibrous material and one matrix material, wherein the fiber-composite hollow component is formed from at least two fiber-composite half-shells which in a joining edge region of the fiber-composite half-shells are joined to one another such that a cavity is configured between the joined-together fiber-composite half-shells, wherein the method comprises the following steps: providing a first fiber-composite half-shell formed from the fibrous material of the fiber-composite material, and at least one second fiber-composite half-shell formed from the fibrous material of the fiber-composite material; assembling the first fiber-composite half-shell and the at least second fiber-composite half-shell so as to form the fiber-composite hollow component; wherein at least one spacer element is inserted in the joining edge region between the first fiber-composite half-shell and

Abstract: The invention relates to a device (1) for producing a curved preform (9) from flat semi-finished fiber material (8), comprising a shearing unit (2), which has at least two rotating rolling elements (3a, 4a), arranged spaced apart in a conveying direction (11), and a control unit (6) connected to the rolling elements, wherein at least one of the rolling elements is formed in a pivotal or tilting manner and a semi-finished fiber material sensing device (7) is provided, which is formed for sensing position information of the semi-finished fiber material conveyed through the shearing unit, wherein the control unit is further arranged for pivoting or tilting the at least one rolling element during the conveyance of the semi-finished fiber material, depending on the sensed position information from the semi-finished fiber material sensing device.

Abstract: The load-bearing capacity of cylindrical shells of a composite fiber material that are at risk of buckling is determined by deriving improved reduction factors for analytical calculation of the design load. A load distribution head applies an axially acting force to a cylinder shell. A dent actuator dents the surface of the cylinder shell in a predetermined dent direction with a predetermined dent depth. A dent force is determined when a steadily increasing, axially acting force is applied to the cylinder shell by the load distribution head until a complete failure of the cylinder shell is detected. An analysis unit determines a dent depth from a data memory at which a dent force at a complete failure of the cylinder shell is at a maximum compared to dent forces of other dent depths.

Abstract: The invention relates to a wing structure (1) for flying objects, comprising a wing leading edge (4) and a wing box wherein the wing leading edge should be arranged on the wing box in particular in a detachable manner. For this purpose, the wing leading edge is connected to the wing box within a joining segment (9) and to rib extensions (11) of the wing box by means of fastening element (12) near the nose segment (15) such that a fastening-free segment (14) extends on the top side (16) of the wing leading edge in order to compensate thermal deformation during flight.

Abstract: A device is configured to allow for the load-bearing capacity of cylindrical shells of a composite fiber material that are at risk of buckling to be determined. The device allows for deriving improved reduction factors for analytical calculation of the design load, which enables an improved approximation to the actual load-bearing capacity.

Abstract: The invention relates to a device (1) for producing a curved preform (9) from flat semi-finished fiber material (8), comprising a shearing unit (2), which has at least two rotating rolling elements (3a, 4a), arranged spaced apart in a conveying direction (11), and a control unit (6) connected to the rolling elements, wherein at least one of the rolling elements is formed in a pivotal or tilting manner and a semi-finished fiber material sensing device (7) is provided, which is formed for sensing position information of the semi-finished fiber material conveyed through the shearing unit, wherein the control unit is further arranged for pivoting or tilting the at least one rolling element during the conveyance of the semi-finished fiber material, depending on the sensed position information from the semi-finished fiber material sensing device.

Abstract: The invention relates to an air cargo container with an interior space limited by a wall and sealed against the exterior for avoiding an entry of fluid. The wall comprises a first operating configuration wherein said interior space limited by the wall has a first volume VI1. Furthermore, in case of a fire the wall is deformed into a second operating configuration wherein said interior space limited by the wall comprises a second volume VI2 being smaller than the first volume VI1. A check valve blocks fluid from streaming from the exterior into the interior space but opens for a stream from the interior space to the exterior. An actuation means for changing the operating configuration in case of a fire automatically transfers the wall from the first operating configuration into the second operating configuration. During this transfer fluid is pushed from said interior space via the check valve to the exterior.

Abstract: A method for the manufacture of an integrally reinforced lightweight structure with a fiber-reinforced plastic by a molding tool, the structure having stiffening ribs crossing one another at node points and a skin attached to the stiffening ribs. The molding tool has channel-type depressions for creating the stiffening ribs. The steps include laying down into the depressions at least one intermediate layer and at least one reinforcement layer, repeating the laying down until the depressions are at least partially filled with intermediate layers and reinforcement layers to form the stiffening ribs with integral connecting feet, populating the molding tool with intermediate layers and reinforcement layers for manufacturing the skin, and curing and/or solidifying the intermediate layers and reinforcement layers. A resulting lightweight structure and a device for the manufacture of the lightweight structure are also disclosed.

Abstract: The invention relates to an air cargo container with an interior space limited by a wall and sealed against the exterior for avoiding an entry of fluid. The wall comprises a first operating configuration wherein said interior space limited by the wall has a first volume VI1. Furthermore, in case of a fire the wall is deformed into a second operating configuration wherein said interior space limited by the wall comprises a second volume VI2 being smaller than the first volume VI1. A check valve blocks fluid from streaming from the exterior into the interior space but opens for a stream from the interior space to the exterior. An actuation means for changing the operating configuration in case of a fire automatically transfers the wall from the first operating configuration into the second operating configuration. During this transfer fluid is pushed from said interior space via the check valve to the exterior.