Abstract: A controllable helium-II phase separator utilizes the cut-off action of the thermomechanical effect if superfluid helium-II flows through a capillary gap-shaped canal. For controlling the throughput, the gap width of the canal is varied by changing the distance between two opposite canal walls at least in the range between 0 and 15 .mu.m.

Abstract: A photoelectric receiver for picture recording equipment, particularly for thermal-image equipment having local brightness adaptation, comprises at least one first detector element for providing point-by-point scanning of the image generated by an optical receiving system, as well as at least one second detector element associated with one or several of the first detector element(s) having a larger radiation-sensitive area for picking up at least part of the surroundings of a picture point picked up by a first detector element. The second detector element determines the gain, with which the signals of the first detector element(s) are amplified for the formation of video signals.

Abstract: A brake and release means for a rotary nozzle body. The rotating shaft of the nozzle body is mounted in a missile casing and delivers a gas thrust jet substantially perpendicularly to the direction of the longitudinal axis of the missile for guiding the missile. To be able to adjust the angular position between the rotary nozzle body and missile with high control frequency and exactly, a brake and release device is provided which comprise a friction coupling and an electromagnetic setting means. The frictional engagement and the release of the rotary nozzle body occur through a force control in that through the setting means, a control force axially directed counter to the tensioning force which assures the frictional engagement is exerted on the rotary nozzle body. To support the release of the rotary nozzle body, it may be provided further to build up a gas pressure between the friction faces of the friction coupling.

Abstract: The invention shows a rotary positionable installation, such as a wind power, having a tower (11), and an apparatus carrier supported on the tower so as to be rotatable about its axis and rotary positionable by means of an azimuth drive unit, particularly a housing (2), including a frequency adjusting unit (18, 19 27; 40, 42, 46; 66, 74) for the natural yawing frequency of the swinging system of the following components: apparatus carrier (2), azimuth drive unit and tower (1) by adjusting the torsion (rotation) spring constant by means of one of the components and/or the connection between at least two of the components of the swinging system. In this manner, the adjustment of the natural yawing frequency is made possible in a simple manner in respect to construction as well as operation.

Abstract: A mechanical vibrator for resonance operation, and particularly well suited for use with a beam chopper, comprises a mechanically stiff vibrator arm representing a fixed mass. A spring with a fixed spring constant is attached to and acts upon the vibrator arm. The vibrator arm and the spring comprise a mass/spring system. A drive means is connected to the vibrator arm and has a positive feedback circuit for self-excitation at the resonance frequency of the mass/spring system. At least one first magnetic system is arranged on the vibrator arm and at least one second magnetic system is located off the vibrator arm in operational connection with the first magnetic system for measuring and/or influencing the time ratio of the two half waves (t.sub.o, t.sub.g) of the vibration amplitude waveform of the vibration arm.

Abstract: An apparatus for correcting the flight path of a missile, such as a high speed shell or projectile, includes a missile body with a distributor for flow means rotatable in the missile body. An outlet opening for the flow means from the distributor is positionable relative to a blow-out opening on the outer circumference of the missile body for effecting a correcting thrust and for switching rapidly between different transverse forces, a missile tip provided with the blow-out openings is arranged to communicate with the outlet openings from the distributor. The extent to which the blow-out openings and the outlet openings align or overlap can be adjusted by a drive for the distributor acting in cooperation with the braking arrangement.

Abstract: A device for the recognition and directional detection of optical radiation, especially laser radiation, i.e., a so-called laser warning sensor. The laser warning sensor comprises several optical input systems to which a light guide path leading to a detector is assigned. In the individual light guide paths, polarizing devices for the linear polarization of the incident optical radiation are provided which determine for each light guide path at its end facing the detector, a specific direction of polarization which is different from the direction of polarization of the other light guide paths. The radiation leaving the ends of the light guide paths combined in a bundle is conducted to a detector designed as a polarimeter. From the direction of polarization determined in the polarimeter, the direction of the incident laser radiation is determined in an evaluation circuit.

Abstract: A device for detonating a rolling mine upon impact or collision with a target by a linkage of sensors which detect physical criteria independent of each other in a sequence predetermined in time, a signal processor connected thereto delivering a firing signal for detonating the mine at the proper time.

Abstract: A method for the manufacture of components such as heat exchangers, heat absorbers, rocket engines and the like, the components substantially comprising a base structure having cooling canals which are covered by a cover layer of the same or technologically similar material and which is applied by electroplating in such a manner that the cooling canals are first provided with an electrically conducting filler, the cover layer being generated by electroplating and subsequently the filling of the cooling canal being removed. Flexible and elastically expandable profiled ropes which are inserted loosely into the cooling canals and are pulled out after the cover layer is electroplated on are provided as the filler for the cooling canals.

Abstract: A ring (9) serves to support a case (1) during pressing of a charge (4) of a warhead. On the side, ring (9) is arranged around the case (1), against which a pressing force is exerted. The inside diameter (d) of ring (9) is smaller than the outside diameter (D) of the case at permanent deformation of the case during pressing without ring (9).

Abstract: A device for detecting the presence and direction of a pulsating or intensity-modulated laser radiation, in which the direction of radiation is exactly determined measures time intervals. A system with two detector elements is provided, with the first element producing a starting signal immediately when the laser radiation is incident, and the second element producing a stop signal which is delayed in time relative thereto. The second detector element is connected to a plurality of unequally long optical delay lines, each coupled to an optical collecting aperture having a specific orientation and a limited field of sight, with the individual fields of sight overlapping one another.

Abstract: A horn radiator with a grooved inner surface has a mode coupler for a TE.sub.01 wave and includes four cavity resonators embedded in the grooved surface of the horn and interconnected by an annular rectangular wave guide extending around the outer surface of the horn.

Abstract: For reading-out an opto-electric detector constructed as an array of rows, the signal contents of several detector elements of a row section of a row located within a "window" are added up. The "window" is advanced in steps by the provision that the signal content of the last detector element located in the "window" is subtracted from the respective sum signal of all detector elements located in the "window" and the signal content of the detector element located in front of the "window" is added to the sum signal.

Abstract: A fuze for setting off jacketed explosive charges, particularly underwater charges, comprises a breaking wall aimed at the explosive charge, and an initiating charge aimed at the breaking wall. Between the initiating charge and the breaking wall, an intermediate space is provided which can be filled with water. With the intermediate space filled with water, upon detonating the initiating charge, a shockwave is produced in the water in the intermediate space by which the breaking wall is fragmented to form a piercing spike setting off the explosive charge.

Abstract: An electromagnetically interference-proof flight control device having an hydraulic positioning drive for a control surface, the position of which is to be influenced. Provided are at least one signal line for feeding in optical control signals, at least one hydraulic pressure line and a return line, an electrohydraulic valve arrangement which precedes the hydraulic positioning drive and is connected to the hydraulic pressure line, an optical-electronic converter which converts the optical control signals into corresponding electronic signals for the electrohydraulic valve arrangement and a hydraulic-electric energy converter. The hydraulic-electric energy converter serves as an electric energy source for the opto-electronic converter and for addressing the electrohydraulic valve arrangement.

Abstract: A controllable flow deflection system for guiding the flow of a fluid medium in a desired discharge direction includes a steered deflection device mounted in a body or support member. The deflecting device includes a rotatable element containing at least one outlet opening for discharging the fluid medium which flows to the element from a reservoir. A driving and braking device is connected to the rotatable element. The one or more outlet openings are arranged so that the discharged fluid medium does not cause any torque on the rotatable element, or a torque is developed from a combination of two torque vectors symmetrical with respect to the axis of rotation of the element. Such a system may be used in a thrust system for steering a flying body member, in a secondary injection system, or in a hot gas motor, such as a vane motor.

Abstract: The countermass of a recoilless launching device is composed of a combustible material and has a firing connection with the working space in which the propellant charge burns up.

Abstract: A coil-shaped body is used to transmit torque between shafts spaced axially apart and with the shaft axes disposed angularly to one another. Such an arrangement is used in a bent steering column for a safety steering mechanism. The coil-shaped body is formed by winding a plastics material impregnated fiber strand around an axially extending mandrel so that the layers of the strand are in crossing relation. The crossing superposed layers form lattice bars between the crossover points of the body. The lattice rods have a radial dimension greater than the length of the strands. The angle of the lattice rods relative to the axis of the coil-shaped body is greater than 55.degree..

Abstract: An electrode for resistance pressure welding equipment having current control has frictionally connected thereto an optical accelerometer. The parts of the optical accelerometer as well as its optical signal leads are fabricated from electrically non-conductive and non-magnetic material.