Ammunition and explosives – Projectiles – Target marking
Patent
1986-11-10
1988-02-02
Tudor, Harold J.
Ammunition and explosives
Projectiles
Target marking
102293, 102501, 102505, 343888, F42B 1118, F42B 1100
Patent
active
047222824
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a payload-carrying projectile of the type which is provided with a sensor which cooperates with the payload.
Since modern combat field artillery has become capable of achieving ever increasing effective ranges of 40 km or more, improved reconnaissance to achieve a more effective use of the weapons has become necessary. Furthermore, projectiles containing, for instance, mines as a payload are being developed which are fired over large distances for the purpose of interdiction of areas of terrain and the payload of which is only activated after a worthwhile target has entered the attack range. To satisfy these operational plans projectiles are equipped with intelligent sensors, which transmit the results of reconnaissance from the battle field and/or activate a payload either automatically or under remote control.
Strongly opposed demands must be satisfied in the construction of such projectiles. On the one hand the highly sensitive sensors have to be disposed in the projectile in a launch-resistant manner so that they can absorb the large acceleration forces occurring during firing and upon impact in the target area without damage. Large-caliber projectiles are, as is generally known, exposed during firing to forces of many thousand times the gravitational acceleration. On the other hand, after the projectile has reached the target area, the sensors have to be extended as high as possible above the surface of the ground in order to assure large detection range.
SUMMARY OF THE INVENTION
The object of the invention is to propose a payload-carrying projectile satisfying the above demands.
Based on a payload-carrying projectile of the type discussed in detail above, the above object is achieved according to the present invention by a projectile having a recess formed in its tail section, a sensor for the payload mounted on a sensor carrier, with the sensor and the sensor carrier being disposed, in a protected manner, in the recess during firing of the projectile and with the sensor carrier comprising a concertina type bellows having one end connected to the sensor, and being disposed in the recess in a compressed state; and means for deploying the sensor from the projectile including a reservoir which is disposed within the projectile which contains polyurethane foam mixed with a propellant gas under high pressure, and which is connected, via an opening which is closable by a valve element, with the other end of the concertina type bellows.
According to other features of the invention, the means for deploying further includes an electronic control element, which is disposed inside the projectile, for controlling the valve element to open same after impact of the projectile in a target area. The electronic control element can, for example, be a time delay switch and/or an impact switch.
Invention is described in detail below with reference to the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a partial longitudinal section of the tail area of a projectile according to a preferred embodiment of the invention;
FIG. 2 is a schematic illustration of a projectile according to the invention embedded in the ground in the target area with a deployed sensor;
FIG. 3 is an enlarged partial view of the parts of the projectile according to FIG. 1, namely a sensor and a sensor carrier;
FIG. 4 is an enlarged partial view of parts of the projectile in accordance with FIG. 1, namely a sensor and a sensor carrier in the deployed state.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In general, FIG. 1 only shows in a schematic view the tail area of a payload-carrying projectile 1 in a state of rest. The payload-carrying projectile 1 is stabilized by vanes or fins and for this purpose, has a plurality of stabilizing vanes 12, retracted in the state of rest shown, which are pivotable around respective rotation axes 12a. Furthermore, the projectile 1 has a payload 18, which can be a transmit/receive device and/or an explosive charge. A recess 14 is provided in th
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patent: 3634863 (1972-01-01), Dow
patent: 3986159 (1976-10-01), Horn
patent: 3990123 (1976-11-01), Stachiw et al.
patent: 4292861 (1981-10-01), Thornhill, Jr. et al.
patent: 4448106 (1984-05-01), Knapp
Hellwig Rolf
Synofzik Reinhard
Rheinmetall GmbH
Tudor Harold J.
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