Abstract: In an energy generating system, which is preferably suitable for satellites and space stations, a total of four Stirling engines are combined together into a cross-shaped unit, in the center of which is arranged a cross-gear drive that is acted upon by the pistons of the Stirling engines. Therein, two planet gears revolve around in internally toothed annular gears. The common shaft of the annular gears is connected with the piston rods of the Stirling engines by an inner crankshaft, which simultaneously carries the planet gears, and by an outer crankshaft articulately connected with the inner crankshaft. Both crankshafts comprise counterweights as balancing masses, whereby a complete mass balancing of the cross-gear drive and therewith a vibration-free operation of the entire arrangement is achieved.

Abstract: A load glider has, between the parachute surface and the load, a device in which a reversible transfer of mechanical energy from the main lines to the steering lines takes place, so that essentially only frictional forces are to be overcome during the operation of the steering lines. The device includes two differential gears, which are arranged in parallel and are accommodated in housings in which a steering line is wound up on a roller with a larger diameter and a main line is wound up on the other roller with a small diameter. Gears, which can be driven by pinions driven by electric motors, are flanged onto the larger rollers.

Abstract: In a system for the automatic control of form-locked clutches serving as differential lock in drive axles of a motor vehicle, in which control signals for a coupling actuator are formed by comparison of slippage signals with threshold values, both the engagement and the disengagement of the lock clutch are to be better adapted to the operating conditions which occur in practice. For this purpose, slippage sum signals (SSLR, SSFH) formed by integration of the speed differences (DFLR, DFVH) are compared with slippage sum thresholds (SSSLR1, SSSLR2, SSSVH1, SSSVH2) and the actuating time of the actuator is controlled as a function of further traveling conditions.

Abstract: The vibration absorbers have mounts for radial fastening of the vibration absorber to an inside surface of a wheel rim to be used on rails. A plurality of mounts are uniformly distributed over the circumference of the inside surface and are each coupleable to the wheel rim in an acoustically good conducting manner against a surface that matches the radius of curvature of the inside surface. On each mount at least one vibration absorber consisting of a sequence, running in the radial direction, of metal and plastic plates can be coupled in an acoustically effective manner by means of a coupling surface. The vibration absorbers and mount are releasably connected with one another and have a coupling surface that is always the same and is independent of the radius of curvature of the inside surface of the wheel rim.

Abstract: This invention relates to a reactor for the selective catalytic removal of CO in high H.sub.2 gas. A precious-metal-containing selective CO oxidation catalyst is applied to a metallic or ceramic carrier having a cross channel or other structure which causes a turbulent fluid flow within the reactor.

Abstract: A coil form with a coil support and with a winding applied thereto, whose turns are provided with a coil bond material. The bond material contains a volatile solvent and mutually fixes the turns when dried (in a dry state). To guarantee an essentially uniform, nearly solvent residue-free drying of the coil bond in the entire winding even in the case of a very large number of coil layers, the coil support is a porous coil support having open pores. The coil support has a diffusion coefficient with respect to the solvent that is equal to or slightly lower than that of the winding.

Abstract: A two-part screw-type coupling suitable for coupling together electrical and/or mechanical components in an aircraft, for example, has a rotation lock feature that prevents the unintentional spontaneous loosening of the screwed connection as a result of vibration and shock. The coupling includes a generally cylindrical support body and a collar nut rotatably mounted thereon and retained by a retaining element. A rotation lock element locks the collar nut and the support body together against relative rotation. The lock element includes a spring or a spring-loaded ring, which is rigidly connected to the collar nut or the support body and which applies a sufficient clamping tension against the other part of the coupling to achieve the desired locking function. The rotation lock can provide a finely stepped static adjustment and locking, or a fine step-less dynamic adjustment and locking of the tightening torque of the collar nut on a component to which the coupling is screw-connected.

Abstract: In a hydraulic-mechanical operating mechanism for a breathing valve of an internal combustion engine in which the valve is engaged by two compression springs, one biasing the valve in opening direction and the other biasing the valve in a closing direction, the valve has a stem with first and second cam areas for engagement by the pistons of first and second cylinder and piston structures for retaining the valve in its closed and open end positions wherein the first cylinder and piston structure includes spring means biasing its piston into engagement with the associated cam area and the second cylinder and piston structures includes spring means biasing the associated piston away from the associated cam area and the respective cylinders can be hydraulically actuated to release the valve when it is in the closed end position and to engage the valve when it is in its open end position.

Abstract: This invention relates to a process and an apparatus for the catalytic water vapor reforming of methanol. The reforming process is carried out in two stages. The methanol is incompletely reacted in the first stage in a heat-transfer-optimized process with a high specific catalyst load. In a reaction-optimized second stage, while the specific catalyst load is lower, a further reaction is carried out which completes the methanol reaction. In addition, a tube bundle reactor is disclosed in which the first, heat-transfer-optimized stage takes place in reaction tubes which, for constructing heat transfer medium ducts, are each surrounded by a concentric outer tube, while the second, reaction-optimized stage is carried out after the return of the reform gas in the housing. The reaction tubes as well as the area between the outer tubes are filled with catalyst material.

Abstract: It is suggested for a metal-semiconductor diode that the depletion zone layer be grown epitaxially from deformed In.sub.x Ga.sub.1-x As with an indium content x increasing in the direction of the metal contact and/or that a diode area be delimited by surrounding insulation regions in a planar design consisting of a flat layer sequence and that the metal contact be provided on the surface of the layer sequence. Corresponding advantageous manufacturing processes are described.

Abstract: A method and apparatus for communicating over a track circuit which includes an interference signal. The invention includes sampling the interference signal on the track circuit at a predetermined sampling frequency to produce a sampled interference signal, detecting interference at a predetermined first sub-carrier frequency based on a fast Fourier transform of the sampled interference signal, forming a vector signal corresponding to a predetermined second sub-carrier frequency related to the predetermined sampling frequency and different from the predetermined first sub-carrier frequency, performing an inverse fast Fourier transformation on the vector signal to form a series communication signal, coupling the series communication signal to the track circuit, sampling the series communication signal on the track circuit at the predetermined sampling frequency from a sampled communications signal, and recovering the vector signal based on a fast Fourier transform of the sampled communication signal.

Abstract: Thrust-generating device with rocket engines arranged in pairs opposite each other for multiple ignition as well as individual and group activation and with an amount of fuel sufficient for the duration of the mission. The thrust-generating device is designed as a closed, storable, modular unit. The rocket engines are operated with liquid fuel and liquid oxidizing agent. At least one tank is provided for each fuel component. The tanks are in the filled, pressureless state before the activation of the thrust-generating device. The rocket engines and a fuel distributor of block design are integrated within a central bulkhead. The thrust-generating device is surrounded by a sealed outer jacket and is divided by the bulkhead into two separate chambers. The outer jacket is lined on the inside with a "self-sealing" film. The oxidizing agent is stored in one chamber, and the fuel in the other chamber. The empty spaces in the chambers contain an adsorbent filling.

Abstract: The invention relates to a device for self-defense of aircraft against missiles and provides for a combination of a proximity sensor for the enemy missile, an intercepting rocket, and an aimed light beam, with the light beam optionally being used alone as an optical jammer against an optical homing head on the missile, or being used together with the intercepting rocket to steer it optically by either a semi-active or a beam rider steering method.

Abstract: An arrangement of a drive unit in a vehicle, which drive unit comprises at least an electric traction motor, a fuel cell, a compressor for supplying air to the fuel cell and an electric motor for driving the compressor. According to the invention, the fuel cell is partitioned into at least two fuel-cell stacks which are fitted on opposite sides of the compressor. The electric motor, the compressor and a radiator fan are arranged on a common drive shaft.

Abstract: Fuel supply system for multijet airplanes using cryogenic fuel with one tank or one tank group for each engine or for all engines on one side of the longitudinal central plane of the airplane, and, if desired, with an additional, common tank or an additional, common tank group for all engines. A transfer line with shut-off valve leads from each tank/tank group associated with a defined engine or with the engines of one side of the airplane to at least one other tank/tank group and/or, if desired, to the tank/tank group common to all engines. If desired, at least one transfer line leads from the common tank/tank group to at least one other tank/tank group.

Abstract: A waste water drain apparatus (1) is to be attached to the fuselage belly (2) of an aircraft. The apparatus (1) essentially includes a drain pipe (3), an aerodynamically shaped fairing (7) enclosing the drain pipe (3), an attachment flange (6) for connecting the apparatus to the aircraft, at least one temperature sensor (9), and either at least one heating element (8) or hot air inlet (13) for heating the drain pipe (3). An inlet end (4) of the drain pipe (3) is to be connected to a waste water system of the aircraft. An outlet end (5) of the drain pipe (3) exits rearward at the trailing edge of the fairing so that the lengthwise axis of the drain pipe outlet is substantially parallel with the air flow during flight.

Abstract: A layer construction with an organic layer and a transparent cover layer which covers the organic layer and which is harder than the organic layer, and a process for producing such a layer construction in which the cover layer is deposited on the surface of the organic layer from a precursor material present in the gas phase. In order to improve the optical quality of the layer construction, the cover layer, at least in a transition region between the organic layer and the cover layer, is deposited with an index of refraction which differs by a maximum of 20%, in particular by a maximum of 10%, from the index of refraction of the underlying organic layer.

Abstract: The invention relates to a semiconductor composite structure for an electronic component. The semiconductor composite structure comprises a diamond layer, which is substantially undoped except for unavoidable impurities, one side of which is covered by a doped diamond-free semiconductor layer, with the layers being arranged on a growth substrate. The discontinuity which exists at the transition between the semiconductor layer and the diamond layer with respect to the conduction band and/or the valence band, is such that in the semiconductor layer charge carriers, which are excited optically and/or thermally, can be conducted in the valence band and/or conduction band of the undoped diamond layer with a decrease in their potential energy.

Abstract: In a process for contactless energy transmission in charging the battery of a vehicle, in particular an electric car, by means of an inductive transmitter having a primary element (1) and a secondary element (2) which is attached to the vehicle, the secondary element (2) is made freely accessible and the primary element is power driven to move in all three spatial coordinates within a predetermined spatial area. In this process the primary element (1) and the secondary element (2) are placed, under sensor control, in predetermined positions relative to each other and then electrical energy is transmitted in the medium frequency range by means of the inductive transmitter.

Abstract: A passenger service apparatus in a passenger cabin, especially of an aircraft, includes a service module having comfort and service elements such as reading lamps, flight attendant call buttons, loudspeakers, air nozzles, and the like. The service module is mounted on a spring-biased yielding support arm below the bottom shell of an overhead baggage compartment. An end of the support arm is mounted on the cabin wall and extends generally inwardly toward the middle of the cabin, to position the service module generally centrally above the passenger seats that are to be served by the service module. Connector lines such as electrical conductors and air conduits run along the support arm to connect the service module to a service channel extending along the length of the passenger cabin and including electrical conductors, an air duct, and the like.