Messerschmitt-bolkow-blohm Gmbh

Messerschmitt-boelkow-blohm Gesellschaft MIT Beschraenkter Haftung

Messerschmitt-boelkow-blohm Gmbh

Messerschmitt-bolkow-blohm Gesellschaft MIT Beschrankter Haftung

Norbert Nissl

Peter Grossler

The invention is directed to apparatus whose weapon efficiency is effected in cooperation via a highly compressed magnetic field, wherein the base magnetic field is maintained or increased beforehand by magnetohydrodynamic generator stages which are operated by propelling charges and/or explosives.

Apparatus with rapid magnetic field compression

The invention is directed to a hollow or projectile charge with an explos material charge (6) and a lining (9) acted upon by the detonation of the explosive material and forming a spike or a projectile (16). In order to achieve the highest possible accelerations for the spike or projectile, the lining (9) is constructed as a part of the hollow space (10) with walls (4, 5) of a good electrically conducting material in which a primarily fed magnetic field (H) is enclosed and compressed by means of the detonation of the explosive material (6). The hollow space (10) is preferably formed by means of a coaxial system (3) of an inner conductor (4) and an outer conductor (5), which coaxial system is short-circuited at both sides, wherein the outer conductor is encased by explosive material (6). During the detonation of the explosive material, the outer conductor (5) is pressed against the inner conductor so that the hollow space (10) located between the outer and inner conductor is constantly reduced.

Hollow or projectile charge

The invention is directed to a ranging gun (1a to 1f) for a mass (17, 18) which is to be accelerated. The ranging gun comprises a coaxial system as acceleration system, which coaxial system consists of an outer conductor (2) and an inner conductor (3) which are electrically connected with one another by means of a short-circuit bridge (9) which terminates the coaxial system. In the coaxial system, a strong current pulse is fed at one side. Next, an explosive charge, which is aligned along the coaxial system, is ignited at the feed location so that the outer and inner conductors (2, 3) contact and a closed hollow space (10) is formed. The front termination is formed by a plasma bridge (11) which has formed from the short-circuit bridge (9) by means of the vaporization of the bridge material after feeding the strong current pulse. The magnetic field enclosed in the hollow space (10) is compressed by means of the forward moving detonation front, wherein, by means of adapting the mass of the plasma bridge (11 ), the dimensioning of the hollow space (10) can be adjusted along the entire compression distance in such a way that magnetic field compression occurs.

Ranging gun with electromagnetic acceleration system

An acceleration sensor comprises a housing formed with a hollow cavity deing a sensing direction. An acceleration sensing conductive mass is releasably mounted in the cavity. The mass is released by a cutting member which severs the releasable mounting of the acceleration sensing mass. A force applying assembly is activated to cause movement of the cutting member. Switch electrodes are arranged at the lower end of the housing cavity. The mass falls through a predetermined distance and bridges the switch electrodes. The sensing mass, when severed, may move in incremental steps due to the use of a two-stage releasing assembly. Sensing transducers may be located along the falling path of the acceleration sensing conductive mass.

Acceleration sensor

An electrode for resistance pressure welding equipment having current control has frictionally connected thereto an optical accelerometer. The parts of the optical accelerometer as well as its optical signal leads are fabricated from electrically non-conductive and non-magnetic material.

Resistance welding equipment having an optical accelerometer for

The present accelerometer has an inertia mass and a measuring device for suring a force acting on the inertia mass. The measuring device compares the intensity of light emanating from at least one optical fiber light source, with the light intensity entering at least one receiving optical fiber, after the light has been reflected, preferably repeatedly, in a gap formed by at least two reflecting surfaces. The gap is changeable by the force acting on the inertia mass. The acceleration to be measured may vary the gap width where the gap is formed between two parallel reflecting surfaces. Where the gap is formed by two surfaces including a gap defining angle, the acceleration to be measured may vary said gap defining angle.

Analog accelerometer

A piezoelectric acceleration transducer has a piezoelectric element with a plane surface arranged in contact with a mass. The mass and the piezoelectric element are held in fixed relationship to each other by a support structure arranged in such a manner that inertia forces effective on said mass are directed to be effective perpendicularly on the plane surface of the piezoelectric element. A bearing point or line is provided between the mass and the support structure in such a position that the directional sensitivity of the transducer may be determined by said position.

Piezoelectric acceleration transducer

The present accelerometer uses the total light reflection of a prism for suring an acceleration force by disturbing such total reflection in accordance with the displacement or deflection of a body located close to a boundary surface of said prism, and responsive to the movement of an inertia mass which in turn responds to the acceleration force. The reflected light is measured by a photosensitive device and the resulting electrical signal is a direct measure for the size of the acceleration force. In order to make the measuring of the acceleration force independent of variations in the intensity of the light emitted by a light source used as part of the accelerometer, a reference signal may also be produced to form a quotient of the measured signal and the reference signal.

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Aresing, Germany

Norbert Nissl