Abstract: A disk wheel, especially a railroad wheel, has a composite construction of a single piece metal hub and a single piece metal rim connected to each other by a wheel disk of fiber reinforced composite material providing exclusively adhesive bonds. The wheel disk transmits shearing stress between hub and rim. The rim is provided with two radially inwardly extending rim flanges. The hub has two radially outwardly extending hub flanges. The shearing stress transmitting wheel disk (12) has a radially outer rim contacting surface (9) adhesively bonded to the rim (3) and rim flanges (7), and a radially inner hub contacting surface (8) adhesively bonded to the hub (2) and hub flanges (6). The wheel disk (12) is inserted into the space between the concentrically arranged hub and rim as long as the composite material is not yet cured and hence sufficiently deformable. The wheel disk is exposed to compression during curing.

Abstract: Foldable panels of a solar collector, for example for a satellite, have a plurality of panel sections hinged to each other. At least one outer panel section of each panel is foldable into a position of about 90.degree. to the yet unfolded panel sections. The power needed for the partial unfolding and subsequent complete unfolding is provided by power storing devices, such as mechanical springs. The inward end, relative to a mounting such as a satellite body, of the outer panel section and an outward end of a further inwardly located panel section, for example the next but one inwardly located panel section, are equipped with rigid stop members extending in an extension of the plane of the respective panel section.

Abstract: The turbulent drag is reduced on the surface of a body moving through a fluid by providing longitudinal channels in the surface, for example of an aircraft wing, which channels extend in parallel to the flow direction and which channels are interconnected with the boundary layer by a longitudinal gap communicating the channel with the boundary layer.

Abstract: A polarization separating reflector is constructed for use in microwave transmitting antennas or in microwave receiving antennas. The signal supply to the transmitting antennas and the signal retrieval from the receiving antennas may be symmetrical or nonsymmetrical. Such antennas may or may not be equipped with subreflectors. Such antennas have a polarization selectively reflecting lattice structure on or within a dielectric carrier. This antenna structure is resonantly constructed out of separate dipoles having different lengths, preferably in the form of a linear dipole lattice. The dipoles are arranged in a staggered manner, colinearly, or at an angle relative to a reference line, such as the vertical, as desired.

Abstract: A magnet controller for a magnetically suspended vehicle of the linear stator type for travelling along a rail track (1) forming a linear stator having teeth of uniform determined width, responds to a rectified control signal. The control parameters for the magnet controller (21) are adjusted in response to speed to assure a stable control during standstill and at low speeds and to achieve a good response or follower characteristic of the control system at high speeds. A speed representing signal (U.sub.v) is generated in a conductor loop, preferably a double loop (9), inserted into a groove (10) of the poles (5) of the levitation magnets (2). The signal (U.sub.v) generated in the conductor loop is rectified at (31), and if desired passed through a low-pass filter (32) to provide the control input signal for the controller (21) by a very simple circuit. Utilizing just the amplitude of the speed signal (U.sub.

Abstract: The present remote data monitoring system employs a laser and a modulated retroreflector for the remote data monitoring of hard to access spaces, targets etc., in combination with an arrangement for a simultaneous friend-or-foe identification, and in combination with devices for the protection against detection and against interrogation of a friend by an enemy laser. In this system, a liquid crystal modulator of special construction depending on the purpose and structure of the system, is arranged in front of a retroreflector and modulated by the respective information. The information is interrogated by a spatially distant laser station by directing a laser beam onto the retromodulator, whereby the information is retroreflected and simultaneously modulated.

Abstract: Auxiliary winglets or control surfaces for aircraft wings are tiltable ab an axis extending in the flight direction and about an axis extending substantially perpendicularly to the flight direction. The auxiliary wing tips have a configuration which assure a wing surface continuity, especially when the tips are in their normal wing extending position, but also in any other position of the winglets. Additionally, at least the leading auxiliary winglets are located upstream of the elastic wing axis, as viewed in the flight direction and they have a forward sweep or negative sweepback. The combination of these features permits a simultaneous reduction of induced drag and of stress caused by wind gusts, and for increasing the effectiveness of the wing's ailerons. Thus, these auxiliary winglets have three advantages simultaneously.

Abstract: A structural component having a curved wall, such as an aircraft fuselage pipe, has a grid structure formed of box frames produced by winding tapes of fiber reinforced synthetic material, so-called prepregs, onto mold bodies. These mold bodies are then assembled on a mandrel for covering with a planking and curing whereby the tapes are bonded together to form stringers intersecting with ribs in a grid structure and whereby the planking is bonded to the grid structure. The ribs are reinforced by fiber reinforced belt segments of synthetic material inserted into gaps between adjacent short ends of the mold bodies, whereby these belt segments are bonded to the ribs during curing. The belt segments ave a width corresponding to a multiple of the width of the stringers and hence protrude radially inwardly. Preferably, an edge reinforcing strip of fiber reinforced material is arranged alongside the radially inner edge of the belt segments.

Abstract: A laser scanning device for fastest possible deflection or sweep velocities s constructed for use in a laser guide or pilot beam system. The scanning device has two symmetric scanning cylinders which each are caused to rotate about their respective rotational axis or axis of symmetry by a gas stream so as to achieve a rapid beam deflection. Due to the low structural weight and small dimensions of the scanning cylinders with their respective scanning mirrors passing through the scanning cylinder at a slant, angular velocities up to the breaking limit of the material can be achieved.

Abstract: A plurality of electrical conductors or cables are held in place by a cirar member, such as a ring or disk, or by two ring or disk elements forming a pair, to form a conductor or cable bunch. For this purpose a plurality of recesses are provided in the circumferential zone of the ring or disk, for holding a conductor or cable in place in each recess. The recesses in the ring or disk are closed by a rim section. The ring or disk elements have recess forming fingers or pieces which can be rotated into preliminary and final positions with an increased clamping force in the final position. In all embodiments the cable or conductors are held in place by a proper biasing force. The costs for forming cable or conductor bunches and for their final installation have been substantially reduced.

Abstract: A connecting device has at least one bolt and a loop of unidirectional fis bound by or embedded in a synthetic matrix material looping around the bolt to form a looping range extending around the bolt. The resistance of the matrix material in the looping range against squeeze-out is improved by reinforcing fiber layers located in the looping range of the loop around the bolt. The fibers of these reinforcing layers are also bound by the matrix of the synthetic material. The reinforcing fibers form insert and/or cover layers having at least one main fiber orientation which extends at least approximately in the direction of the longitudinal bolt axis whereas the unidirectional fibers forming the loop extend approximately tangentially to the bolt in the looping range.

Abstract: The tail end structure of an aircraft has a cross-sectional configuration th laterally and downwardly extending lobes reaching outside a circular cross-section tail end structure, yet staying within the silhouette of the circular cross-section tail end structure as viewed from the top, the side, and the bottom, whereby the boundary layer formation and the boundary layer separation are improved as compared to a tail end structure having the circular cross-section.

Abstract: Information regarding an object, especially brightness information, is obned by scanning the object with an optical scanner, especially an infrared scanner to provide a respective analog signal. The analog signal is produced by passing the received radiation past a chopper disk onto a detector through a secondary optical assembly. The output signal of the detector is digitized and supplied to a fast Fourier transformation processor which also receives a counting signal derived from the oscillation of the chopper disk. The system may be used, for example, for obtaining deviation and/or presence signals regarding the orientation of an earth satellite relative to the center of the earth.

Abstract: A system for setting or driving wedge sockets into holes of a structural ponent combines a mounting member having two shaft sections forming the socket, with a driver having a pistol shape with a pistol grip and a trigger for releasing an automatic impact force. The driver, for example energized by compressed air or by a cocked spring, applies a predetermined impact energy to one of the two shaft sections. The apparatus enables an operator to work efficiently, especially where large numbers of such fasteners must be set.

Abstract: A weapon control for a droppable weapon such as a bomb, has at least two sors for producing impact related or environment related signals for a microcomputer forming part of the weapon. The microcomputer evaluates the signals received from the sensors for producing different control signals for different situations as signified by the sensor produced signals. If the weapon has hit a hard target surface the responsive control signal detonates the weapon instantly. If the weapon got stuck in a soft target, the weapon is placed into a lurking state for a later detonation or defusing.

Abstract: An onboard kitchen for an aircraft includes at least one kitchen unit with a counter top, a kitchen sink and a venting hood connected to an air exhaust conduit. A cyclone type separator is connected with its inlet and outlet ports into the exhaust air conduit thus connecting the separator to the venting hood. The cyclone type separator divides the airflow into a clean airflow which is led into a clean air discharge conduit and into a contaminating particles carrying airflow which is led into a discharge pipe connected to a drainage duct which connects the kitchen sink, preferably to a drainage pylon outside the aircraft body. The use of filters is thus avoided and the maintenance costs are minimized.

Abstract: A liquid crystal light modulator is constructed for the transmission of sch signals modulated onto a light carrier passing through gaseous, liquid, and solid media such as air, water, or glass. A large surface area modulation of the light is accomplished in the visible and infrared range over narrow, however adjustable, wave length ranges or widths. Several circuit arrangements for such modulators are disclosed and their function described.

Abstract: A disk wheel, especially a railroad wheel, has a composite construction of single piece metal hub and a single piece metal rim connected to each other by a wheel disk of fiber reinforced composite material providing exclusively adhesive bonds. The wheel disk transmits shearing stress between hub and rim. The rim is provided with two radially inwardly extending rim flanges. The hub has two radially outwardly extending hub flanges. The shearing stress transmitting wheel disk (12) has a radially outer rim contacting surface (9) adhesively bonded to the rim (3) and rim flanges (7), and a radially inner hub contacting surface (8) adhesively bonded to the hub (2) and hub flanges (6). The wheel disk (12) is inserted into the space between the concentrically arranged hub and rim as long as the composite material is not yet cured and hence sufficiently deformable. The wheel disk is exposed to compression during curing.

Abstract: A wheel set for rails has a divided axle and two wheels rigidly attached to he respective axle section. The axle sections are interconnected in a force transmitting manner by a clutch for adjusting a differential r.p.m. between the two axle sections. However, the clutch components also permit a relative rotation when the clutch is not energized. The clutch has an inner clutch component and an outer clutch component forming a work gap (7.4) between the clutch components. The work gap extends concentrically to the rotational axis of the shaft and is filled with a magnetizable powder for engaging and disengaging the clutch components which are so mounted to the respective axle section that an axial displacement of the clutch components relative to each other is prevented.

Abstract: A detonator safety device for a weapon, such as an artillery shell or a war ead, includes a detonator member, a detonator charge and an igniter plate for applying a firing impact with the aid of the igniter plate on a main explosive charge of the weapon in response to the firing of the detonator charge by the detonator member when the device is in a firing position. The arrangement is such, that the main explosive charge cannot be fired by the igniter plate when the device is in a safety position even if the detonator charge should accidentally be fired.