Abstract: A device for adjusting the polarization plane in an antenna feed system is disclosed. The rotary device uses flexible waveguides which permits rotation of the polarization plane over a large angular range.

Abstract: A method for controlling a magnet of a magnetically levitated railroad, wherein at least three variables are used which are acquired in an observer unit (support circuit) based on the measured magnitudes for the magnetic gap width s, as well as the magnetic acceleration b; to improve the following behavior of the magnetically levitated vehicle without increasing the background noise component, an additional rail signal is feed to the controller of the individual magnets, which rail signal is respectively obtained by a rail observer unit from the measured magnitudes of the magnet gap width and the magnet acceleration of one of the magnets which is leading in a travel direction in such a way that it represents a noiseless rail signal with a correct phase in the useful frequency range as referred to the respectively trailing magnets.

Abstract: A disc wheel, particularly for rail vehicles, with a composite metal/plastic structure. In order to make possible simple manufacture with at the same time adequate force transmission, a structure between the hub and the tread comprises a plastic structure comprising two half shells of the same design which are subdivided in sector fashion by spoke-like reinforcement ribs. The reinforcement ribs each have a longitudinal slot into which rib plates are inserted which connect the two half shells to each other. Advantageously, plastic foam is inserted into the cavities of the half shells. All joints between the plastic structure and the hub or the tread are cemented joints.

Abstract: A reacquisition process is used in the event that an earth orientation of the yaw axis Z of an earth satellite is lost, in that the angular velocity .omega. of a flywheel, the rotational axis of which is oriented in the direction of a pitch axis Y, falls below a predetermined value as a result of an insufficient energy supply. After restoration of the energy supply, the pitch attitude of the earth satellite and, accordingly, the earth orientation of the yaw axis Z, are to be restored. For this purpose, constantly alternating increases and decreases in speed are commanded for the flywheel in a determined manner in correlation with the zero passages of the pitch deviation, whereby the satellite is subjected to a constant reversal of its direction of rotation. This occurs until the angular momentum of the satellite falls below a predetermined value during a zero passage of the pitch deviation.

Abstract: The invention relates to an apparatus for controlling a projectile (1) having a nozzle arrangement (2) rotatably arranged in the projectile housing. The nozzle arrangement comprises a rotary nozzle body (3) with a thrust nozzle (4) which nozzle body can be brought into any desired angular position by means of a positioning drive. The rotary nozzle body (3) is coupled to a gas generator (7) for a propellant gas supply. For optimum utilization of the propellant gas of the gas generator, in all angular positions of the rotary nozzle body (3), the axis of rotation (a) of the rotary nozzle body (3) is arranged to be non-parallel to the longitudinal axis (A) of the projectile.

Abstract: A fiber optic sensor for the detection of mechanical quantities comprising a light source, a first fiber optic waveguide coupled to the light source, the front face of the first waveguide being ground at a 45.degree. angle to the axis of the fiber and mirrored, a second fiber optic waveguide arranged parallel to the first waveguide, the front face of the second waveguide being ground at a 45.degree. angle to the axis of the fiber and mirrored, the two mirrored faces being held opposite to one another, and a photoelement receiver coupled to the other end of the second waveguide. At least one of the waveguides can move either along the fiber axis or around the fiber axis relative to the other waveguide, the motion varying the light received by the receiver and thereby indicating the magnitude of the mechanical quantity.

Abstract: The disclosure is directed to a modulation device for a radiation detector device picking up an image field. The modulation device comprises a modulation disk disposed in the image field plane and having radial slits, said modulation disk executing a nutation about the axis of the image field. The modulation device further includes an optical system, a radiation-sensitive receiver arrangement and a signal processor. The radiation-sensitive receiver arrangement (11) comprises a grouping of radiation reception elements (E11 to Emm) forming a radiation receiver field (13), which elements are coupled with a window circuit (18, 22, 32) and are selectively addressable by the window circuit for the formation of at least one window zone within the radiation receiver field (13). The addressing occurs such that only signals of this at least one window zone are transmitted into the signal processor.

Abstract: A light sensitive detector arrangement contains a plurality of photosensitive detector elements, which in each instance have a multilayer structure of alternating positively and negatively doped photosensitive semiconductor material with a superlattice structure and control electrodes arranged vertically to the semiconductor layers and bordering on them on their front faces. To these a control voltage can be applied in order to control the spectral light sensitivity. An array contains in each case a predetermined number (for example three) of photo detector groups (E.sub.11 to E.sub.mm) of photosensitive detector elements (E.sub.111, E.sub.112, E.sub.113. . . respectively E .sub.mml, E.sub.mm2, E.sub.mm3). The control electrodes of the photo detector elements of each photo detector group are connected to variable voltage regulators (U.sub.1, U.sub.2, U.sub.3). Through the voltage regulators the upper and/or lower limit wavelength (.lambda..sub.o, .lambda..sub.

Abstract: An arrangement for position finding of a laser beam in a scattering medium with a laser transmitter and a laser receiver followed by an evaluation circuit. In order to be able to differentiate in the incoming laser radiation the unscattered coherent content and the scattered content, the laser transmitter is connected to a modulation circuit for intensity modulation of the transmitted laser beam with a characteristic modulation frequency (f.sub.L >1/T.sub.s) with the pulse duration spread being T.sub.s, which a brief laser pulse experiences upon being scattered in the medium. In addition, the receiver is connected to an electronic frequency filter tuned to the characteristic modulation frequency. Thereby, essentially only the unscattered coherent content of the laser beam is utilized for evaluation.

Abstract: The disclosure relates to an application part for rigid or flexible endoscopes having a viewing channel and a working channel extending parallel to the viewing channel, with the working channel being equipped with a guide as well as a defined stop for a fiber optic waveguide, which can be inserted and coupled with a laser light source, and the working channel having optics for concentrating the laser light emerging from the fiber optic waveguide onto a punctiform area. The part of the working channel surrounding the punctiform area is formed as shock wave reflector. Further, a flushing channel is provided, the outlet opening of which is at least partially directed onto the face of the optics from which the light emerges.

Abstract: A housing for the protection of explosive charges comprises several layers of different compositions surrounding the explosive charge. The successive layers have alternately a high and a low shock wave impedance, where further the outermost layer has the lowest melting point and the melting point increases toward the innermost layer.

Abstract: The invention relates to a sensor for use in the warhead of a missile, which can be used against helicopters, in that it is equipped with one or more high-resolution LRFs with respect to space and time, which identifies the helicopter on the basis of the common arrangement and size of the detected rotor blade selections with a numerical processor and activates an ignition device accordingly.

Abstract: A method and apparatus for recording the image of an object, for instance the earth's surface, from a flying body, in this case an earth satellite. The flying body flies over the object at an altitude. Herein, the object is scanned in lines by a line scanner. The viewing angle .alpha. of the liner scanner with respect to the direction of flight v is increased during the scanning process, whereby a higher resolution capacity is attained. Preferably several line sensors are used in the line scanner, which are arranged on a carrier, which is displaced during the flight of the flying body relative to a length in the direction of flight v. The displacement occurs by way of a cyclically functioning drive.

Abstract: A guiding probe, in particular for an endoscope for surgical endoscopy with laser light, wherein the guiding probe comprises a flexible section which is resistant to high temperatures and substantially does not absorb the laser light used, and further including an auxiliary part for introducing the probe.

Abstract: A mold component for forming a member consisting of a nondevelopable surface, such a member being an airfoil such as a wing or the like, is provided with an interior cavity in the shape of a developable surface which approximates the nondevelopable surface. In forming the mold cavity, points of equal tangential inclination on the non-developable surface are joined by straight lines and then the areas between the straight lines are formed as flat planar surfaces, thereby to form a developable surface which is an approximation of the nondevelopable surface. A flat planar development is then formed from this developable surface and bends are made therein at the straight lines in order to form thereby the mold cavity. A substantial number of said bends extend non-parallel to each other and none of the bends intersect.

Abstract: To provide, for a sliding door with a pneumatically operated door panel servomotor, a safety device which operates independently of the usual reversing device and which limits the maximally active door closing force to an exactly settable value in a simple and reliable manner, there is associated with the servomotor, a limit value control circuit with a closing force sensor which senses the reaction force of the servomotor acting on the door jamb side during the closing process and a sensor-controlled three-position control valve which freely vents the closing pressure side of the servomotor above a given response value of the closing force sensor.

Abstract: A low flight method for automatic course determination when approaching a given target site is disclosed wherein a terrain memory is used in which terrain points in grid type distribution of the terrain in question with height coordinates associated with them are stored digitally (digital terrain height model). By means of a rough analyzer, spaced at possibly variable first time intervals .DELTA.T over the multitude of points of the digital terrain height model, a first fan (F.sub.n) starting from a respective momentary flight position (P.sub.1) and oriented with its center direction (M.sub.F) toward the target site (P.sub.z) and consisting of several adjacent segments (S.sub.i) is placed. For each segment (S.sub.i) a mean value of the height coordinates of the terrain points situation in it is calculated, and the segment (S.sub.4) having the smallest mean value is determined. By means of a fine analyzer (4), within each of the first time intervals .DELTA.

Abstract: An ignition device for a projectile, in particular a guided missile, where the ignition moment is controllable as a function of the impingement delay and of the flight time of the projectile. This allows compensation for the type of material comprising the taget, e.g., hard or soft, and for the amount of time the projectile has been airborne, thus compensating for reduced projectile velocity at the time of striking the target.

Abstract: The invention relates to an image recording sensor (1) with a plurality of photodetectors (15) in a matrix arrangement. The photodetectors (15) are here integrated components of cells (2), which through address lines (PX, PY) can be coupled for the definition of cell addresses. Each cell has at least one capacitor (C1, C2), in which the photocharge of the photodetector (15) can be stored. The resulting capacitor voltage (U1) is compared in a comparator (17) with a reference voltage (U.sub.REF, U2). The comparator is succeeded by an output circuit (18) for the output of a signal to the address lines upon the occurrence of a positive comparison result. All cells (2) can be driven via an external control circuit (4) with groups of common control and check signals. With such image recording sensor (1) no intensity values per picture element are output but only the addresses of the picture elements of interest, in which the intensity value has exceeded a given level, i.e.

Abstract: A missile, and in particular a shell flying at supersonic velocity, having aerodynamic control. The missile comprises a missile housing and a missile tip which is tiltably connected to the missile housing. Between the missile housing and the shell tip, a positioning device consisting of at least one piezoelectric positioning member and a control circuit is arranged which comprises a voltage source. By applying a voltage to the piezoelectric positioning members, their lengths are changed, whereby the tilting motion of the shell tip is executed.