Abstract: A film stretching plant is described, which comprises a furnace (3), which consists of several treatment zones (1, 1a) which each respectively comprise a ventilation unit (2). The film (4) is suppliable to the furnace (3) through a film inlet region (5) and is thermally treatable zone-wise in the treatment zones (1, 1a). The treatment fluid (6) supplied to the film stretching plant flows over the film (4) on its upper surface and its lower surface in the treatment zones (1, 1a). In the film stretching plant according to the invention, the treatment fluid (6) is circulatable in the respective treatment zone (1, a) by its associated respective ventilation unit (2) for the thermal treatment of the film (4), and a portion (6a) of the treatment fluid (6) is conveyed from the respective treatment zone (1) to the process-technically following treatment zone (1a).

Abstract: Method for measuring the fabric tension in a weaving machine, in which the fabric (1) is deflected by a deflecting shaft (2), wherein a bending force is applied onto the deflecting shaft (2) by the fabric (1). The flexure or bending displacement of the deflecting shaft (2) is measured by a sensor (3), which is arranged in an area between two supports (4.1, 4.2) of the deflecting shaft (2) on the weaving machine. The deflecting shaft (2) is connected with a machine frame (9) of the weaving machine via the two supports (4.1, 4.2). The spacing distance (A) between the two supports (4.1, 4.2) of the deflecting shaft (2) is reduced for larger fabric tensions to be measured and is increased for smaller fabric tensions to be measured. Furthermore, the invention relates to a corresponding weaving machine.

Abstract: Air-jet weaving machine with an apparatus for the supply of compressed air with several pneumatically adjustable pressure regulators (1.1, 1.2, 1.3), wherein the pneumatically adjustable pressure regulators (1.1, 1.2, 1.3) respectively comprise a pneumatic control inlet (3.1, 3.2, 3.3). Furthermore an electrically controllable pressure adjusting means (4) and a control pressure line (5) is present, in which various different air pressure values are producible by the electrically controllable pressure adjusting means (4). To each pneumatic control inlet (3.1, 3.2, 3.3), an electrically switchable valve (6.1, 6.2, 6.3) is allocated, by which the pneumatic control inlet (3.1, 3.2, 3.3) is connectable with the control pressure line (5).

Abstract: An apparatus (2) with a chain (1) that is arranged endlessly circulateable in the apparatus (2) includes a measuring apparatus (3) for measuring the stretching or elongation of the chain (1), with a first signal pick-up (4) and with a second signal pick-up (5), which are arranged at a spacing distance (D) relative to one another, which extends in the running direction over several chain links (6) of the chain (1). A first element for signal generation (7) is arranged on a first chain link (6.1) in such a manner so that with a circulating chain (1) a signal is produced upon running past the first signal pick-up (4). Several further elements for signal generation (8) are arranged on a second chain link (6.2) in such a manner so that with a circulating chain (1) a further signal is generated with each one of these further elements (8) upon running past the second signal pick-up (5).

Abstract: In a method for reducing noise generated in a turbo engine with cascades, and a stator-rotor arrangement, in which hydrodynamic pressure fluctuations occurring on the cascades are reduced by varying the surface circulation of at least one section of at least one stator. A structure is provided on one or more stators, influencing the surface circulation of at least one section of the stator.

Abstract: There is provided a dismountable bridge with lane girders which are designed as framework beams with a triangular cross section, whereby lower chords run through the two lower corners, which are at the same level, and an upper chord runs through the upper corner. A roadway slab which forms the roadway of the bridge is placed on the upper chord and the upper chord is connected to the roadway slab in a non-positive manner with sheer strength.

Abstract: A flying device for IR flying target representation with at least one infrared radiator (2). An infrared radiator (2) is arranged inside the exhaust gas flow of a convected heat-generating unit so that the exhaust gas stream completely encloses the surface of the infrared radiator (2) exposed to airflow.

Abstract: The invention relates to a container, in particular as a work room, with variable volume, having a basic container with a bottom wall and a roof wall, at least one expansion element, which can be moved out of the basic container and which exhibits a bottom wall, a side that is open in the direction of the basic container, as well as a front wall opposite the open side, and a device, with which the expansion element can be lowered and lifted. The basic container exhibits at least one hinged side wall and the expansion element is open at the top. In the moved-out state a roof wall of the expansion element is formed by the side wall that is opened up on hinges and belongs to the basic container.

Abstract: A container according to ISO standards as a mobile workspace in civilian and military use comprising a cuboid metal frame of ISO corners and edge profiles connecting these ISO corners as well as thermally insulated side walls, ceiling and floor. The edge profiles are designed in two parts and the two partial profiles of an edge profile run parallel to one another and the intermediate space between the two profiles is filled completely by a thermally insulating material, with the side walls, ceiling and floor having a vacuum insulation layer.

Abstract: A process and system for noise reduction in multi-engine propeller-driven aircraft. The parameters of at least two propellers are adjusted with regard to frequency, amplitude, and phase so that the sound fields of the propellers are attenuated or completely extinguished by interference in the area of the closest aircraft fuselage.

Abstract: A dismountable bridge, having two track carriers which, viewed in the longitudinal direction of the bridge, are divided into several identical modules, in which case the two track carriers are each spanned by a vault and are suspended at the latter. The vaults are divided into several modules in the longitudinal direction of the bridge and are adapted in their modular division to the modular division of the track carriers. The vaults and the track carriers are equipped at their ends with end pieces. The modules of the vaults have mutually identical constructions and the end pieces of the vaults are connected in a torque-resistant manner with the end pieces of the respective track carriers. The end pieces are constructed such that they are capable of compensating the length differences between the track carriers and the vaults in the case of different bridge lengths.

Abstract: The present invention relates to a wing tip extension (7) for a wing, having an upper and a lower surface (10 and 11) and a leading edge and a trailing edge (12 and 13), the geometries of which are such that between a connection region (8), for connection with a wing, and the tip (9) of the wing tip extension (7) there is provided a continuous increase of the local dihedral, a continuous increase both of the sweepback angle of the leading edge (12) and also of the trailing edge (13), and a continuous decrease of the chord of the wing tip extension (7), and in that the wing tip extension (7) in the connection region (8) carries on from the wing in substance continuously. The wing tip extension (7) in accordance with the invention thereby ensures a significant reduction of the overall drag.

Abstract: A fiber composite component has a piezoelectric actuator or sensor integrated therein. Electric feed lines for the actuator or sensor are constructed in the form of electrically insulated thin wires which exit the fiber composite almost perpendicularly to the laminate layers, so that the fibers of the fiber composite component are not severed by the leading-out of the feed lines, but are slightly pushed apart.

Abstract: An infrared camouflage device has a surface structure having two groups of partial areas. Partial areas in the first group are directed downward and form an angle &agr; of between 5° and 45° with vertical; and partial areas in the second group are directed upward and form an angle &bgr; of between 50° and 65° with vertical; and &agr;+&bgr;<90°.

Abstract: Trailing cable winch and method of operation in which an axially stationary, rotating winding arm is disposed in a carrier tube and driven by a motor arranged in the carrier tube. The trailing cable winch is operable to deposit a trailing cable on an axially reversibly movable cable drum which is disposed on the carrier tube. The rotation of the winding arm is synchronized with the advancing of the cable drum, so that, during a linear movement of the cable drum, the advance per rotation of the winding arm corresponds exactly to the diameter of the trailing cable. In the end position of the cable drum, two cable layers are deposited above one another.

Abstract: A pneumatic wall structure and a method of making and erecting same. The pneumatic wall structure includes an inner flexible tent sheet, a central flexible tent sheet and an outer flexible tent sheet. The inner, the central and the outer flexible tent sheets are arranged to form a two-layer wall structure comprising (i) an inner layer formed by the inner tent sheet and the central tent sheet and, (ii) an outer layer formed by the central tent sheet and the outer tent sheet. The inner layer is inflatable and provides a main support structure for the wall structure, and the outer layer forms a convection space into which an ambient air is capable of flowing. The inflatable support tubes are arranged between the central tent sheet and the outer tent sheet to provide redundancy to the main support structure and to provide a spacer between the central tent sheet and the outer tent sheet.

Abstract: The invention relates to a service life indicator for monitoring structures, such as pioneering bridges, which are designed with a limited fatigue strength and whose service life is therefore limited. A service life indicator for monitoring structures, such as pioneering bridges designed with a limited fatigue strength and consequently limited service life, is provided. The service life indicator includes a strip of material as a test piece, having at least one hole arranged off-center in the test piece and a notch extending from an edge of the hole in a direction of an edge of the test piece for determining material fatigue. The notch extends to a nearest edge of the test piece and includes two mutually opposite grooves having the same cross-sectional shape that can be one of round, elliptical, oval, v-shaped and trapezoidal in cross-section.

Abstract: A mixer circuit including a mixer (MIX) for mixing the RF signal supplied to the mixer (MIX) and reinforced in a preamplifier (LNA) with an LO signal supplied to the mixer (MIX). A line (L1) common to the RF signal and the LO signal is connected with the input of the preamplifier (LNA). In addition, there is another line (L2) which the RF signal and the LO signal have in common, and which connects the output of the preamplifier (LNA) with the input of the mixer (MIX), the level of the LO signal being below the compression point of the preamplifier (LNA).

Abstract: A direct drive for a loom reed includes a linear motor carrying out a linear oscillating motion, or an arc segment motor carrying out a pivoting oscillating motion, or a circular coaxial motor carrying out a pivoting oscillating motion. The circular coaxial motor has a hollow shaft rotor arranged within a hollow shaft stator, and may further have an additional hollow shaft stator arranged within the rotor in a sandwich motor construction. The arc segment motor and the linear motor may similarly have a rotor member sandwiched between two stator members. Two motor units can be provided respectively above and below the weaving plane to drive the reed together. With these measures, the driving force is increased, yet the drive arrangement is confined to the available installation space.

Abstract: A measuring transformer for detecting hydrocarbons in gaseous media with two resistive oxygen sensors whose electrical resistance is essentially independent of temperature with one of the two resistive oxygen sensors being catalytically activated for reducing hydrocarbons.