Abstract: A mounting member for mounting an engine or transmission on a supporting ucture of a motor vehicle, is constructed as a one piece integral component made of fiber compound material in which the fiber layers have defined, preselected orientations. The damping characteristics can be optimally tuned for specific types of use or vehicles by controlling the materials and orientation of the fibers in each layer, and by controlling the number of layers. Additional damping may be achieved by inserting an elastomeric intermediate layer between the individual fiber layers. The shape of the mounting member also varies according to the load or stress to which the member will be exposed in use. The available space and the type of motor vehicle in which the member will be used are also taken into account in determining the shape, cross-sectional configuration and other structural details of the mounting member.

Abstract: This automatic riveting machine can access confined component parts, has a imple sensor system to locate component part edges which allows it to be used in special equipment or in robots. The riveting machine has a mounting bracket to which a rivet supply unit, a riveting unit, and a drill feed advance unit are movably attached. A pneumatic cylinder drives each unit from its resting position into the operating position while shock absorbers brake these movements. Another pneumatic cylinder locks all units into the resting position when the compressed air supply in interrupted. The rivet supply unit pneumatically shoots single rivets into pre-drilled holes in the component parts. The riveting unit is constructed as a so-called alligator riveting press which clamps the component parts together and presses or rivets the heads of the rivets. The drill feed advance unit drills holes into multiple component parts while locating their edges, pressing them together, and compensating for any positional tolerances.

Abstract: A connecting rod has a closed bearing at one end for connecting, for exam, a piston bolt to the rod. At the other end the rod has a divided bearing for connecting, for example, a crankpin to the rod. The rod is made of fiber reinforced synthetic materials. The divided bearing is enclosed by an inner and an outer bearing bail and by the free ends of a fiber reinforced loop which surrounds the closed bearing. At the divided bearing end the rod components are interlocked in a dovetail manner. The loop is an open loop and the free ends of the loop legs extend substantially in parallel to the longitudinal axis of the rod.

Abstract: A flexible blade neck of a helicopter rotor blade is bridged by a torsion gid sleeve for the blade angle adjustments. The radially outer end of the blade neck and sleeve are rigidly connected to the wing section of the blade. The radially inner end of the blade neck forms a blade root which is secure to the rotor head or hub. Additionally, the radially inner ends of the blade root and of the sleeve are interconnected by a ball and socket arrangement permitting a universal movement between the sleeve and the blade neck, thereby decoupling sleeve movements from the blade neck and vice versa.

Abstract: The blade angle of the blades is adjustable in a rotor for a rotary wing craft by a lever mechanism (13, 14 or 41, 42) secured to the radially inner end of an extension bushing (7; 7.1) or shaft (43). The extension bushing (7; 7.1) or shaft (43) is connected with its radially outer lever (15 or 44) to the blade root (2) or a blade root mounting (39, 50) of a rotor blade in an angular position adjustable manner for adjusting the tracking of the blades. The bushing (7; 7.1) or shaft (43) is adjustable in its angular position relative to the blade root (2) by adjustment screws cooperating with a free end of the lever (15 or 44) which reaches into a gap between two of such adjustment screws (16 or 45) cooperating with counter nuts (17 or 46). By adjusting the angular position of the bushing or shaft with the screws it is possible to assure a uniform tracking among all the blades of a multiblade rotor. Such uniform tracking is desirable if the blades of a rotor are to rotate in the same plane.

Abstract: An electromagnetic double-valve can synchronously regulate or control the ow of two materials without the need of a costly mechanical linkage between the two individual valves which may be arranged in a common housing. An armature serves as the valve body or plug in each valve and is held in one valve position by permanent magnets and is switched to the other valve position by a synchronously controlled electromagnetic coil or coils which are connected in series. When one armature is lifted quicker than the other by the electromagnet or magnets, then the total magnetic flux decreases, whereby the second armature is also lifted. The synchronization of the switching operation is enforced by the common, spacially closed magnetic flux through both armatures and by the common effect on both armatures by the electromagnetic coil or coils.

Abstract: Reinforcing fiber materials such as rovings, webbings, and other fiber maials are impregnated with a resinous binder material in such a manner that gaseous inclusions are avoided whereby a surprising increase in the strength of the fiber compound material is achieved. For this purpose the liquid resinous binder material is applied substantially only to one side of the reinforcing material which is then moved through an absorbing zone in which the liquid resinous binder material penetrates the reinforcing material substantially completely as a result of a predetermined residence time and temperature in the absorbing zone. Gas inclusions are removed by adsorption and/or by expulsion. The gas adsorbing and expulsion zone is a chamber in which a plurality of guide rollers are arranged so as to cause the impregnated material to repeatedly reverse its moving direction, whereby the sequential and repeated penetration of the reinforcing material by the resinous material and the removal of gas inclusions are enhanced.

Abstract: The present wheel chair, especially for invalids, is foldable in a vertical irection rather than horizontally to transform the chair into a very compact package. For this purpose all foldable components of the chair are equipped with journals having journal axes extending perpendicularly to a vertical central plane of symmetry of the chair. Further, the seat is vertically liftable and also horizontally guided on guide tracks (18) extending in parallel to the plane of symmetry of the chair. The guide tracks (18) are movable back and forth on guide rail sections (17) which are pivoted to the top of the support structure (4) of the chair. Hydraulic piston cylinder drives are connected to all chair components which are movable under a loaded condition with a person sitting in the chair. The chair seat is also divided so that the chair may be moved directly over a toilet seat, for example.

Abstract: A tool, such as a drill bit, cutting tool or any other suitable tool, is d in a two component tool holder. The first component (1) includes a holder sleeve (3) with a conical bore (2). The sleeve (3) is held in a housing (19) carried by a machine tool, robot or the like. The second component (25) which carries the tool proper has a conical shaft (26) with a locking groove (29) near its free end. The conical shaft (26) locks into the conical bore (2) in the sleeve (3). An additional automatic locking is provided by at least two locking bolts (12) located to reach radially through the sleeve (3) into the locking groove (29) when the shaft (26) is inserted into the conical bore (2) of the sleeve (3). The locking bolts (12) are biased by springs (14) into the locking position and pulled out of the locking position by pneumatic or hydraulic pressure operated elements.

Abstract: A vehicle bumper bar is made of at least one completely closed box shaped dy wound of fiber-reinforced synthetic resin impregnated strands or bands with a fiber orientation that may vary along the length of the bar and also from one wall of the box shape to the other. Several bodies of closed cross-section may be bonded together, for example by the resin curing, to form a single integral body of approximately square configuration. Towing elements may be integrated directly into the bar.

Abstract: A stable optical laser resonator is formed by two mirrors facing each other. At least one of the mirrors operates as a decoupling device for decoupling a coherent, pulsating laser beam from the resonator. For this purpose the decoupling mirror has a zone or zones which are permeable or partially permeable to the laser beam. These zones are located in predetermined areas of the mirror and the size of these zones is relatively small compared to the total effective mirror surface. Preferably, the active lasing medium is limited to a narrow cross-sectional area perpendicularly to the optical axis of the resonator. The narrow cross-sectional area has an approximately rectangular shape for enforcing the one-dimensional oscillation movement of a laser beam.

Abstract: A surface type structural component such as a wing for an aircraft is curved in space and is manufactured from a plurality of fiber wound box frames forming longitudinal and cross ribs made of fiber reinforced resin impregnated material. These box frames are formed as modular units by winding the fiber compound material onto mold bodies and assembling the mold bodies for bonding the box frames together to form a reinforcing grid structure while the box frames are still on the mold bodies. A laminated sheathing is bonded to the grid structure. Methods and apparatus including an automated assembly plant are disclosed for manufacturing the surface type structural component.

Abstract: The air gap between the rail or rails and an electromagnetically levitated ehicle is optimally controlled with regard to the power or energy consumption. This result is achieved by a control employing two control channels. One control channel is constructed as a non-linear support or guide controller for regulating or contolling the air gap width in response to disturbances of short duration. The other control channel is constructed to cause a reduction of the air gap width or rather of the rated air gap width for adapting of the air gap width to the spectrum and amplitude distribution of the disturbances to which the levitated vehicle is exposed. This type of control may be employed for the regulating of the air gap between the support magnets and the respective rail and also for controlling the air gap between the guide magnet and the respective rail to reduce the energy required for maintaining these air gaps at an optimally efficient width.

Abstract: Mirror structures for reflecting and concentrating radiation energy, so-ced heliostats, comprise a rotatably pivoted supporting framework made of flexurally stiff supporting members (12, 13, 14), with single mirrors adjustably attached thereto. In order to be able to use thinner, lighter, not pre-bent, yet flexibly adjustable single mirrors, essentially flat planar carrying frames (1, 2, 4) are attached to the supporting framework, preferably by way of three-point connections (5). Several flexible, smaller individual mirrors (6) are mounted on each of these carrying frames, with the aid of axially adjustable pins distributed over the mirror plane.

Abstract: An unfoldable antenna netting reflector includes a plurality of stiff ribs to which the reflector net is secured. These stiff ribs are pivoted to a central holding member and extend radially outwardly when the reflector is unfolded to spread out the reflector netting. In order to assure a trouble-free unfolding of such a reflector at any time levers (8, 9) are provided between two ribs each (2, 4; 4, 6). Tensioning cables (14, 16) running over rollers (17, 19) are operatively connected to the buckling joints (8',9') of these levers for straightening out the levers. The ends of the levers are pivoted to the respective rib and the levers are capable of buckling in but one direction. When the levers assume the stretched out position, they snap into a locked condition. A plurality of ropes arranged for operating a plurality of levers may be operated in unison. The levers are secured to the ribs either at a spacing from the radially outer end of the ribs, or they may be secured to these radially outer rib ends.

Abstract: A hold-down apparatus clamps functional elements, for instance solar cell nels which are unfoldable from a carrying body, possibly a spacecraft, in their folded condition. The folded functional elements (15) rest on a counter support (3) provided on the carrying body. A pressure piece (4) is mounted on the outermost functional element (15a). A swingable retaining arm or bail (5) rests with its one end on the pressure piece (4). In order to produce a high biasing force in the locked position, and in order to be able in an easy and reliable manner to reverse at any time from the unlocked to the locked position, the hold-down apparatus has the following features. A lever arm (7) is articulated or journalled to the counter support (3) and may be rotated by means of a drive element (10). The lever (7) is rotatably connected at one of its ends to the retaining arm or bail (5) which is biased by a spring (9) pressing in the direction toward the pressure piece (4).

Abstract: The present positional gyroscope is used for stabilizing and steering a fng body, especially a secondary flying body ejected from a primary or carrier flying body which is rotating or rolling about its longitudinal or roll axis. Such gyroscopes are supposed to sense and take over the rolling position information from the gyroscope of the carrier flying body. For this purpose it is necessary that the gyroscope of the secondary flying body avoids course deviations. Hence, the gyroscope is supported in a first locked frame (3, 8) which in turn is suspended in an auxiliary rolling frame (4). A drive mechanism or motor (2) is connected to the rolling frame (4). The driving motor (2) may be switched on for rotating the auxiliary rolling frame (4) prior to activating or ejecting the secondary flying body.

Abstract: A rocket propellant or rocket motor is provided with an insulating layer ween the fuel proper and the inner wall of the housing forming the combustion chamber. The insulating layer is made of a foamed synthetic material. The foaming insulating material is introduced into the housing under pressure after the solid fuel body has been centered in the housing with a spacing between the inner housing wall and the fuel body the front face of which is covered with a synthetic material film for the subsequent removal of the layer of foamed insulating material from the front face of the fuel body. In an alternative method the inner surface of the combustion chamber wall may be coated with a layer of foamed insulating material prior to the introduction of the fuel into the combustion chamber, said layer of foamed insulating material forming a tubular member.

Abstract: Materials and structural components having irregular shapes may be tested two ultrasonic testing heads which are movable in unison in the direction in which the cross-section of the material or component being tested changes. The synchroneously moving testing heads are spaced from each other in a direction extending across the moving direction. The testing heads are ultrasonic receivers connected with their outputs to a comparing device which provides an error signal when the amplitude ratio of the received signal changes. The amplitude ratio is formed between the amplitudes of the ultrasonic signals received by both testing heads. Preferably, the comparing device comprises an amplifier which amplifies the amplitude of the received second signal by an amplification factor which is proportional to a deviation of the amplitude of the received first signal from a reference value. The error signal is recorded, for example, by a coordinate plotter.

Abstract: The thrust nozzle opening angle of two cycle gas turbine jet engines is crolled in a system which comprises a low pressure compressor driven by a low pressure turbine. A first compressor is arranged radially inward for a first flow cycle or circuit and a second compressor is arranged radially outward for a second flow cycle or circuit. A high pressure compressor is driven by a high pressure turbine. A combustion chamber is situated upstream of the high pressure turbine. An afterburner is supplied with the turbine gases from the first, hot flow cycle and with compressed air from the second, relatively cool flow cycle or circuit. The system may have multiple shafts. The control is effected with reference to the instantaneous pressure relationship (.pi..sub.NVZ) between the static pressure (p.sub.sD) downstream of the radially outer compressor (1a) of the second flow cycle (K2) and the static pressure (p.sub.sE) of the air flowing into the propulsion system.