초록 ▼

The present invention relates to a grenade that can be fired from a barrel, for recoilless firing. The barrel is open at both ends and is without any flow cross-section constrictions. The grenade is formed of a grenade base body which surrounds at least one explosive charge, and a flow cross-section

The present invention relates to a grenade that can be fired from a barrel, for recoilless firing. The barrel is open at both ends and is without any flow cross-section constrictions. The grenade is formed of a grenade base body which surrounds at least one explosive charge, and a flow cross-section reduction device for reducing the flow cross-section of the barrel. The device is arranged in the opposite direction to the firing direction X with respect to the grenade base body. The flow cross-section reduction device is connected to the grenade base body, separated from it, via a connecting device, and is connected to it such that it is stable during firing. A grenade launcher or shell firing apparatus has a grenade such as this, and the grenade firing apparatus has a barrel which is open at both ends and does not have any flow cross-section constrictions.

대표청구항 ▼

1. A grenade for recoilless firing from a barrel that is open at both ends and does not have any flow cross-section constrictions, the grenade comprising: a grenade base body containing therein at least one explosive charge;a flow cross-section reduction device for reducing a flow cross-section of t

1. A grenade for recoilless firing from a barrel that is open at both ends and does not have any flow cross-section constrictions, the grenade comprising: a grenade base body containing therein at least one explosive charge;a flow cross-section reduction device for reducing a flow cross-section of the barrel, said device being disposed rearward of said grenade base body relative to a firing direction;a connecting device connecting said flow cross-section reduction device to said grenade base body at a spacing distance therefrom and connecting said flow cross-section reduction device to said grenade base body rigidly stable during firing; anda propellant charge material disposed between said grenade base body and said flow cross-section reduction device, said flow cross-section reduction device preventing a gas pressure created by a burning of said propellant charge material from flowing away too quickly;wherein said flow cross-section reduction device is a support for a wire-based data link, to be unwound while the grenade is being fired and connecting the grenade to a fire control computer at least until the grenade leaves the firing barrel or during an initial flight phase of the grenade after leaving the firing barrel. 2. The grenade according to claim 1, wherein said grenade base body has a cylindrical shape with an external diameter corresponding substantially to an internal diameter of the firing barrel. 3. The grenade according to claim 2, wherein said grenade base body has sealing means on an envelope surface thereof, and said sealing means are configured for sealing gaps between said envelope surface of said grenade base body and an inner surface of the firing barrel. 4. The grenade according to claim 1, wherein said flow cross-section reduction device comprises a hollow-cylindrical ring connected to said connection device via one or more webs. 5. The grenade according to claim 4, wherein an external diameter of said ring corresponds to an external diameter of said cylindrical grenade base body at least over a portion of a height of said hollow cylinder. 6. The grenade according to claim 4, wherein edges of said webs and/or of said ring are inclined on a side facing said grenade base body. 7. The grenade according to claim 4, wherein walls of said webs and/or of said ring are shaped to render cavities therebetween in the form of nozzles. 8. The grenade according to claim 7, wherein said nozzles have a shape forming a de Laval nozzle. 9. The grenade according to claim 1, wherein said flow cross-section reduction device is an annular fin structure. 10. The grenade according to claim 1, wherein said connection device includes a launch barrel extending on an elongation of a cylindrical longitudinal axis of said grenade base body and contains a basic charge. 11. The grenade according to claim 10, wherein said launch barrel is formed with radial holes allowing an ignited said basic charge to flash over to a main charge arranged in an annular shape around the launch barrel and between said grenade base body and said flow cross-section reduction device. 12. The grenade according to claim 1, wherein said data link includes a wire to be unwound is arranged on said flow cross-section reduction device such that said wire is affected as little as possible by hot powder gases and particles created when the grenade is fired. 13. The grenade according to claim 12, wherein said wire is wound in the form of a coil around said ring in a hollow-cylindrical gap, which is open only in an opposite direction to the firing direction, between an external diameter of the ring and an inner surface of the firing barrel. 14. A grenade firing apparatus, comprising: a grenade according to claim 1; anda barrel having two open ends and substantially having no flow cross-section constrictions in said barrel. 15. A grenade for recoilless firing from a barrel that is open at both ends and does not have any flow cross-section constrictions, the grenade comprising: a grenade base body containing therein at least one explosive charge;a flow cross-section reduction device for reducing a flow cross-section of the barrel, said device being disposed rearward of said grenade base body relative to a firing direction; anda connecting device connecting said flow cross-section reduction device to said grenade base body at a spacing distance therefrom and connecting said flow cross-section reduction device to said grenade base body rigidly stable during firing;wherein said flow cross-section reduction device is a support for a wire-based data link, to be unwound while the grenade is being fired and connecting the grenade to a fire control computer at least until the grenade leaves the firing barrel or during an initial flight phase of the grenade after leaving the firing barrel. 16. The grenade according to claim 15, wherein said data link includes a wire to be unwound is arranged on said flow cross-section reduction device such that said wire is affected as little as possible by hot powder gases and particles created when the grenade is fired. 17. The grenade according to claim 16, wherein said wire is wound in the form of a coil around said ring in a hollow-cylindrical gap, which is open only in an opposite direction to the firing direction, between an external diameter of the ring and an inner surface of the firing barrel. 18. A grenade for recoilless firing from a barrel that is open at both ends and does not have any flow cross-section constrictions, the grenade comprising: a grenade base body containing therein at least one explosive charge;a flow cross-section reduction device for reducing a flow cross-section of the barrel, said device being disposed rearward of said grenade base body relative to a firing direction;a connecting device connecting said flow cross-section reduction device to said grenade base body at a spacing distance therefrom and connecting said flow cross-section reduction device to said grenade base body rigidly stable during firing;a propellant charge material disposed between said grenade base body and said flow cross-section reduction device, said flow cross-section reduction device preventing a gas pressure created by a burning of said propellant charge material from flowing away too quickly;wherein said flow cross-section reduction device comprises a hollow-cylindrical ring connected to said connection device via one or more webs, with walls of said webs and/or of said ring being shaped to render cavities therebetween in the form of nozzles being shaped as a de Laval nozzle.