Abstract: A method and a device for launching an underwater moving body. In order to reduce the expenses arising from furnishing watercraft, a land supported deployment of underwater moving bodies in coastal waters using a launching device is provided with a land-based carrier system for transporting the underwater moving body and a corresponding land-based deploying system.

Abstract: The invention relates to a fiberglass spool comprising a self-supporting roll (12) having layers of windings (20) located one above the other of an optical fiber (13) for transmitting data that may be unwound from the interior of the roll outwards, wherein the windings (20) are fixed to one another by means of an adhesive bonding agent. In order to realize a sufficiently stable, self-supporting roll (12) that may be reliably unwound from the inside outwards without loops being pulled out of the roll (12), the roll (12) is structured as a cross-winding and a hydrocarbon-based, salt water-resistant, chemically inert impregnating material that may be liquefied by heating is used as the bonding agent.

Abstract: A method and a device for launching an underwater moving body. In order to reduce the expenses arising from furnishing watercraft, a land supported deployment of underwater moving bodies in coastal waters using a launching device is provided with a land-based carrier system for transporting the underwater moving body and a corresponding land-based deploying system.

Abstract: A method for controlling a torpedo to at least one target. In order to increase the range of the torpedo, the torpedo, during the travel thereof to the target, submerges once or several times into the near-surface region of a water system that is adjacent to the water surface, wherein, however, the torpedo also remains immersed in said near-surface region. The torpedo then extends a radio antenna into a surface region above the water surface and subsequently receives position data containing target position data of the target by way of said radio antenna and uses said position data to head for the target. The invention further relates to a torpedo comprising an antenna section having an extendable radio antenna. Further, the invention relates to such an antenna section.

Abstract: The invention relates to a fiberglass spool comprising a self-supporting roll (12) having layers of windings (20) located one above the other of an optical fiber (13) for transmitting data that may be unwound from the interior of the roll outwards, wherein the windings (20) are fixed to one another by means of an adhesive bonding agent. In order to realize a sufficiently stable, self-supporting roll (12) that may be reliably unwound from the inside outwards without loops being pulled out of the roll (12), the roll (12) is structured as a cross-winding and a hydrocarbon-based, salt water-resistant, chemically inert impregnating material that may be liquefied by heating is used as the bonding agent.

Abstract: An electroacoustic underwater antenna, particularly a lateral antenna which can be fixed to the outer hull of an underwater craft, comprising a series of hydrophones (13) successively arranged in at least one elongate, closed, oil-filled cavity at a distance from each other. The aim of the invention is to achieve a high degree of reception sensitivity in the low frequency range with a sufficiently small, vertical aperture angle. The inventive device is easy to produce and mount and is characterized by several cavities (14) which are fitted with hydrophones (13) at a parallel distance from each other, arranged in front of a rigid plate (12) at a distance therefrom. The plate (12) and the cavities (14) are formed in a panel-type, acoustically transparent plastic element (11). Several of said plastic elements (11) are arranged close to each other or behind each other.

Abstract: An electroacoustic underwater antenna, particularly a lateral antenna which can be fixed to the outer hull of an underwater craft, comprising a series of hydrophones (13) successively arranged in at least one elongate, closed, oil-filled cavity at a distance from each other. The aim of the invention is to achieve a high degree of reception sensitivity in the low frequency range with a sufficiently small, vertical aperture angle. The inventive device is easy to produce and mount and is characterized by several cavities (14) which are fitted with hydrophones (13) at a parallel distance from each other, arranged in front of a rigid plate (12) at a distance therefrom. The plate (12) and the cavities (14) are formed in a panel-type, acoustically transparent plastic element (11). Several of said plastic elements (11) are arranged close to each other or behind each other.

Abstract: A flame retardant thermoplastic molding composition is disclosed. The composition contains an amorphous thermoplastic polymer, at least one flame retardant in the form of a fully or partially halogenated sulfonic acid salt and at least on alkaline earth metal sulfate and/or one oxide having an average particle size of up to 400 nm.

Abstract: A highly branched polycondensate is described. The polycondensate is prepared by polycondensating (a) monomers capable of polycondensation in the presence of (b) branching agents, wherein the branching agents are selected from polymers, oligomers consisting of 2 to 100 monomer units and dendritic polymers. The branching agents contain residues of monomers represented by the general formulas, A—R—Bx or Ax—R—B wherein A represents a —C(O)X group, X being hydroxyl, halogen, alkoxy or aralkoxy, each having 1 to 30 carbon atoms, B represents one of (i) an —OY group, Y being hydrogen, trialkyl silyl, alkyl or acyl, each having 1 to 30 carbon atoms, and (ii) an amino group, an ammonium halide or an alkyl carbamate having 1 to 8 carbon atoms, R is an organic aromatic, aliphatic-aromatic or aliphatic radical containing 1 to 25 carbon atoms, and x≧2. Also described are molded articles prepared from the highly branched polycondensate of the present invention.

Abstract: The invention provides X-ray contrastable plastics materials with low-molecular weight iodine compounds, a process for preparing X-ray contrastable plastics materials with low molecular weight iodine compounds, the use of low molecular weight iodine compounds to improve the X-ray contrast in transparent plastics materials and toys with improved X-ray contrast containing low molecular weight iodine compounds.

Abstract: A method of using oligocarbonates having terminal groups containing iodine to prepare molded articles (e.g., toys and medical equipment) having high X-ray contrast is described. The oligocarbonates contain more thaan one diol unit, and have a weight average molecular weight (Mw) of less than 3000.

Abstract: A method of producing a composite ultrasonic transducer having transducer elements comprising piezoelectric ceramic, with the elements being dispersed in plastic and radiating essentially in the longitudinal direction. To reduce production costs, in several method steps, a plurality of flat ceramic bodies (20) having a plurality of parallel, slot-like openings (21) that are closed on all sides are inserted into a casting mold (25), and the casting mold (25) is filled with plastic (26). After hardening, the resulting ingot (28) is unmolded, and, on the unmolded ingot (28), the ceramic material (26) on the end surfaces away from one another and extending transversely to the longitudinal direction of the openings (21) is removed to the point that the plastic material (26) imbedded in the openings (21) is exposed at the end surfaces (211).

Abstract: A drag antenna for a sonar system for detecting and/or locating sources of sound in water includes at least two acoustically sensitive lines positioned side-by-side and laterally spaced apart during a trailing operation. The lines are secured to each other at the leading ends and at the trailing ends by respective connecting element in order to lower the production costs for the drag antenna and to achieve a sufficiently constant lateral spacing between the acoustically sensitive lines.

Abstract: An electro-acoustical transducer arrangement for underwater antennas comprised of a plurality of hydrophones (10) which are arranged at equal distances in a linear array, and are to be disposed vertically above each other on a support. For reasons of a simplified assembly along with good receiving properties, the hydrophones (10), together with a reflector (11) disposed behind them in the direction of incoming sound, are embedded in an acoustically transparent rigid cast enclosure (20) of an elastomer, preferably polyurethane, which can be worked in a casting process. The connecting lines (12) of the hydrophones (10) of the enclosure 20 are combined in a common plug (13), which is accessible on a front end of the rigid cast enclosure (20). The rigid cast enclosure (20) is provided with devices for fastening the enclosure to the support.