Abstract: A process is disclosed for producing a high temperature stable fiber composite ceramic by chemical vapor infiltration (CVI) with a silicon carbide precursor in a suitable carrier gas on carbon fiber preforms or silicon carbide fiber preforms. This process is characterized by the use of a process pressure of ?0.6 bar absolute and a process temperature of ?1100° C. Also disclosed are structural component parts, particularly for aircraft and spacecraft engineering, which are commonly exposed to high thermal and mechanical loading and which have been produced by the above process.

Abstract: The invention relates to an isokinetic gantry arrangement for the isocentric guidance of a particle beam (12), that can be rotated about a horizontal longitudinal axis (16) and has a beam optical system, symbolized by magnets (36, 38, 40), that deflects the particle beam (12) axially infected by a particle beam accelerator, radially and vertically relative to the horizontal longitudinal axis (16), with a largely rotationally-symmetrical primary structure (18) and a secondary structure (30) that holds the magnets (36, 38, 40) and is supported by the primary structure (18), with the secondary structure (30) having a rigidity that is designed so that the vertical displacements of the magnets (36, 38, 40) due to their weight are essentially of equal magnitude (isokinetic) in all the angle of rotation positions of the gantry arrangement (10), and a method for its design.

Abstract: The invention relates to an isokinetic gantry arrangement for the isocentric guidance of a particle beam (12), that can be rotated about a horizontal longitudinal axis (16) and has a beam optical system, symbolized by magnets (36, 38, 40), that deflects the particle beam (12) axially infected by a particle beam accelerator, radially and vertically relative to the horizontal longitudinal axis (16), with a largely rotationally-symmetrical primary structure (18) and a secondary structure (30) that holds the magnets (36, 38, 40) and is supported by the primary structure (18), with the secondary structure (30) having a rigidity that is designed so that the vertical displacements of the magnets (36, 38, 40) due to their weight are essentially of equal magnitude (isokinetic) in all the angle of rotation positions of the gantry arrangement (10), and a method for its design.

Abstract: The invention relates to a device for the optical display of information regarding the actual operating state of a liquid system and/or for setting parameters for a set operating state of the liquid system, comprising a housing (12) arranged in the area of the operation of the liquid system, a display unit (14), accommodated by the housing (12), for optical display of the information in electronic form, and actuating device (16), accommodated by the housing (12), for setting at least one parameter and a, in particular electronic, control unit (18; 44) for processing and/or conditioning of data and/or signals referring to the actual or set operating state of the liquid system, and their use.

Abstract: A movable structural component for a thermomechanically stressed assembly at least partially from fiber reinforced ceramic is disclosed, wherein the movable structural component comprises at least one structural element made by an polymer infiltration and pyrolysis process and at least one structural element made by an chemical phase infiltration process.

Abstract: A bridge-laying apparatus has a vehicle adapted to travel in a longitudinal direction and a longitudinally extending laying arm adapted to lay down and pick up bridges formed of at least one bridge section. A rigid link has an upper end pivoted on the laying arm and a lower end pivoted directly on the vehicle and an expansible main cylinder offset horizontally from the link has an upper end pivoted on the arm and a lower end pivoted directly on the vehicle. A pusher cylinder extending nonparallel to the main cylinder has a lower end pivoted on the vehicle and an upper end pivoted on the arm.

Abstract: A bridge section made of light metal including a vertical web, an upper chord section connected to an upper end of the vertical web and a lower chord section connected to a lower end of the vertical web. The upper chord includes a thick-walled horizontal part with a weld seam connection and a thin-walled flange. The thin-walled flange has a wall thickness which is less than the thick-walled horizontal part. The vertical web has a wall thickness which is greater than the thin-walled horizontal part and the lower chord has a wall thickness which is greater than the thin-walled horizontal part. A residual wall is formed by machining the lower chord section and the vertical web over a length area. The residual wall has a residual wall thickness with two planes arranged at right angles to one another over the length area. A T-shaped insert is provided including two legs. A connection device is provided for connecting the two legs of the T-shaped insert to the residual wall portions.

Abstract: A hydraulically actuated locking element with two locking bolts axially displaceable on an axis. A carrying structure is provided with two, slidingly guided hydraulic cylinders, two cylinder bottoms, which act as locking bolts and are designed as force-transmitting cylinder bottom. A centrally fastened, common piston rod of the hydraulic cylinders is provided with a stationary piston at each piston rod end. A centrally rigidly connected piston rod fastening is arranged in the carrying structure and between the two, sliding hydraulic cylinders. The piston rod fastening and the piston rod are provided with holes for guiding hydraulic oil.

Abstract: A device for counting and classifying load cycles in supporting structures with various loads, bridges, cranes, or tracks for example. A measuring instrument (2) is attached to an attachment side (7) of a load-cycle counter (1) and accommodates a mechanical strain amplifier (3). The ends (8 & 8') of the strain amplifier are much thicker and more resistant to strain. Its middle (9), which includes a strain gauge 10, is much thinner and more sensitive to strain. The ends are fastened to the attachment side. Any signal deriving from traction, force, or flection, and emitted by the strain amplifier (3) is forwarded through a digitalizer (4). The data are processed and stored in a signal processor (5).

Abstract: A ring resonator comprised of four mirrors arranged at an angle of 45.degree. relative to the pump laser is suggested for an optically pumped far infrared laser. The mirrors are arranged in pairs which are positioned in evacuated chambers of the laser housing together with the ends of two waveguides. The pump laser is introduced into the resonator via a bore in one of the mirrors. The ring resonator provides for a completely wavelength-independent insulation between the pump laser and the ring laser. The system also provides for a minimal power loss of the FIR laser beam.

Abstract: An exhaust gas system with a particulate filter and a regenerating burner, whose hot gas outlet is provided in the vicinity of a closed end of the filter in the form of a plurality of openings, which are arranged in one or more planes parallel to the entry surface of the particulate filter. Due to the splitting up of the hot gas flow in the burner into a plurality of smaller flows of hot gas, the mixing with the exhaust gas is so improved that directly downstream from the flame tube of the burner there is a substantially complete equalization of temperature whereby the particulate filter may be positioned very close to the burner.

Abstract: A heat insulating structure of ceramic material for high temperatures is made up of a plurality of reflective layers in order to provide protection against the action of heat for short periods of time. The reflective layers are made up of a substrate of impregnated, fired ceramic fiber and a noble metal layer. The heat insulating structure is made up of a plurality of such parallel spaced reflective layers.