Abstract: A microwave generator having a central electrode (14) which at the front end has a radiating element (22) and an external electrode (18) which coaxially surrounds the central electrode (14) along an axially extending resonator portion (16), wherein the two electrodes (14 and 18) are of a rotationally symmetrical configuration and define a spark gap (62) which sparks across when a high voltage is applied and radiates microwaves by way of the resonator portion (16) and the radiating element (22) of the central electrode (14). The spark gap (62) is in the form of an annular spark gap, which is determined by a connection element (26) which projects at the rear end axially centrally away from the central electrode (14) and an annular edge (44) of the external electrode (18), the edge being provided coaxially with respect to the connection element (26). The central electrode (14) and the external electrode (18) are arranged in a housing sleeve (12) of an electrically insulating material.

Abstract: A weapon system with classes ammunition, including a weapon housing (1) which has a breech block (12) and in which a propellant charge powder body cartridge support (14) for propellant charge powder bodies (20) which are ignitable by igniter elements (28) and a bullet cartridge support (16) are provided one behind the other. The propellent charge powder body cartridge support (14) adjoins the breech block (12) of the weapon housing (10) and a barrel (18) projecting out of the weapon housing (10) adjoins the bullet cartridge support (16). A number of igniter elements (28) are provided stepwise indexably in the breech block (12). The respective propellant charge powder body (20) has a firing passage (24) which leads into its interior and which based on fluid technology combines with a breech block firing passage (26) which is provided in the breech block (12) and with which the respective igniter element (28) is associated.

Abstract: A seal (10) which seals a gap (12) which is provided between a stationary first element (14), and a moving second element (16), in particular for caseless ammunition, with the second element (16) having a cylindrical sealing ring seat (22) in which a sealing ring (24) is provided. The sealing ring seat (22) has a main section (26) and secondary section (28) with a reduced diameter. The sealing ring (24) has a main body (30) and an initial seal (32). The sealing ring seat main body (26) has an internal diameter (34) which is larger than the external diameter (36) of the sealing ring main body (30) by at least an amount to compensate for thermal expansion. The sealing ring initial seal (32) is forced against the cylindrical sealing ring seat secondary section (28) with a push fit to produce a seal.

Abstract: The median frequency in the emission from a microwave generator (14), which operates in a pulsed manner, is shifted when the generator (14) operates between passive reflectors (23) whose axes are parallel thereto. In the axial direction, the reflectors (23) are approximately the same length (L) as the generator (14), with length matching through telescopic rods being preferable. However, the frequency is governed primarily by the distance (D) between the reflectors (23-23) between which the generator (14) is operated. Once desired resonance conditions have been found, for example for injection of microwave radiation into the mechanical structure of an external arrangement, this frequency relationship can be fixed by the magnitude of the length of the preferably telescopic coupling piece (16) between the resonator (13) and the antenna (18).

Abstract: A cooling apparatus (10) for cooling a detector (52), the cooling apparatus including an inner and an outer countercurrent heat exchanger (12 and 14, respectively) for a first and a second gas in a thermally insulating housing (16), the inner countercurrent heat exchanger (12) being arranged within a sublength of the outer countercurrent heat exchanger (14), and the inner countercurrent heat exchanger (12) being spatially separated from the outer countercurrent heat exchanger (14) by an outer sleeve (18). In this apparatus, the outer sleeve (18) has a partition plate (32) between an expansion nozzle (28) for the first gas located at the end of the inner countercurrent heat exchanger (12) and the remaining part of the outer countercurrent heat exchanger (14).

Abstract: An automatically firing weapon, in particular for caseless ammunition, which has an improved hit probability so that a saving of ammunition is possible. For that purpose the weapon (10) is linearly movably guided in a housing (12) in the axial longitudinal direction of the weapon so that during a burst of firing, the weapon (10) moves back in the housing (12) unbraked and thus recoil-free in a return motion travel (x) which is defined and limited by a return motion damper (32).

Abstract: A mechanical initiating system (10) for caseless ammunition including a weapon breech block and a powder transverse slider adjoining the weapon breech block. A firing pin is axially displaceably arranged in a through hole (26) formed in the weapon breech block. A powder body, which can be initiated by the firing pin and having a priming device, is arranged in the powder transverse slider. In order to achieve a reliable and simple sealing between the firing pin and the inside wall of the through hole, the weapon breech block has a grease reservoir which is open facing towards the through hole, and the firing pin is peripherally provided with at least one grease groove.

Abstract: A nose cover (10) for a dome (12) through which radiation can pass, for a missile, the nose cover having an outer structure (22) through which radiation can pass and which is aerodynamically better than a spherical shape, and having correction optics (24) through which radiation can pass and which can be placed in front of the dome (12). The nose cover (10) makes it possible to retrofit older missiles such that they have a greater range without this necessitating any modification of the existing structure of the missile.

Abstract: A floatable smoke pot which floats in a stable position with a casing can water-tightly closed by a cover through a closure device. Smoke-generating bodies of a pyrotechnic material, which can be ignited by an igniting device, are arranged in the casing can. A stable floating position is achieve through a ballast weight in the casing can at the can bottom (14). A number of column elements forming the smoke-generating bodies are arranged in the casing can in a uniformly distributed relationship, standing on the ballast weight. The space which remains free of the column elements in the casing can is filled with a buoyancy material. The cover has holes which in the unused original condition of the smoke pot are water-tightly closed with closure elements which can be torn open so that the smoke pot can also be submerged in water for a limited time without extinguishing of the smoke-generating bodies.

Abstract: A pyrotechnic charge and a process for preparation thereof, whereby the pyrotechnic charge can be used as an impulse element requiring little space. The pyrotechnic charge has at least one nanostructured, porous fuel body; a protective layer on the surface of the at least one fuel body; and a fluorine-eliminating substance as an oxidizing agent, which is provided in the cavities or porosities of the at least one fuel.

Abstract: Microwave generator having two electrodes which are provided in a housing and are separated via a spark gap which breaks down when a high voltage is applied in order to emit microwaves, in which the first electrode (6) is in the form of a pot, and the other, inner electrode (5) engages over the first electrode on the outside at a distance therefrom at least over a part of the length thereof with the pot-shaped electrode (6) having a bottom section (10) which concurrently forms the side termination of the housing.

Abstract: A wide-angle optical system (2, 40) having an objective (4, 42) and a mirror system, including a curved mirror (6, 46) for projecting a wide-angle image through the objective (4, 42) onto a detector (10, 44). At least one mirror (8, 46) of the mirror system is arranged movably relative to the objective (4, 42). It is possible to achieve a zoom function, a large elevation range and a selection of an enlarged section from the wide-angle image.

Abstract: A method for producing a mirror (10) from a titanium-based material by using the technique of ultraprecision machining. The mirror produced using this method has both a shape accuracy and a surface roughness in the submicrometer region. The mirror (10) is made from a titanium-based material having a shape accuracy and a surface roughness in the submicrometer region, whose basic shape (11) has a has a reflecting surface (12) having a surface roughness of less than 60 nm, and in particular of less than 30 nm.

Abstract: An optical arrangement (2) for a homing head (16), for the purpose of imaging an object scene onto a detector unit (4), including a control unit (24), a first optical unit (10) having two at least partially transparent optical elements, in particular prisms (42, 44), a second optical unit (14) and a beam deflecting unit (18), the first optical unit (10) directing radiation from at least two sections of the object scene onto the beam deflecting unit (18) in a superimposed fashion, and the beam deflecting unit (18) selecting one of the sections and, in conjunction with the second optical unit (14), imaging the selected section on the detector unit (4).

Abstract: In order to move a textile braking element (16) which is in the form of an annular disk and which is deployed radially under the effect of centrifugal force rapidly into a contour which is stable in respect of shape and which is always properly defined even under afflux flow conditions, a cloth (33) which is cut in the form of a circular ring is provided by virtue of radially extending tucks or darts, with a reduced outside periphery (32) in such a way that the opening movement is thereby limited to the shape of a flat obtuse-angled hollow truncated cone which, by means of reinforcing bands (34) which are sewn on along generatrices of the frustoconical surface, is pivotably mounted to the holding ring (15) at the inside periphery (31) while along the outside periphery (32), it is provided with a peripherally extending accumulation of mass (29) for increasing the centrifugal deployment forces; wherein in the front end region of the stowage space (14), the ring (15) is axially fitted into the contour of the fus

Abstract: A pyrotechnic composition which contains black phosphorus as fuel and which can be advantageously used in particular as a pyrotechnic smoke composition.