EP2488821A1 - Treibspiegel - Google Patents
TreibspiegelInfo
- Publication number
- EP2488821A1 EP2488821A1 EP10759814A EP10759814A EP2488821A1 EP 2488821 A1 EP2488821 A1 EP 2488821A1 EP 10759814 A EP10759814 A EP 10759814A EP 10759814 A EP10759814 A EP 10759814A EP 2488821 A1 EP2488821 A1 EP 2488821A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- foam
- sabot
- metal
- different
- fibers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
- F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
- F42B14/068—Sabots characterised by the material
Definitions
- the invention relates to a sabot of foamed materials and a method for its production.
- Sealing mirrors are used in sub-caliber projectiles and shotgun shells, on the one hand to obtain a seal against the propellant gases and on the other hand to ensure a guidance of the projectile in the barrel.
- a sabot projectile is known with a sabot, which is divided by axially extending slots into segments.
- DE 199 29 915 A1 the interaction of cartridge and sabot or sabot is reflected.
- a method for producing a segmented sabot is described in DE 10 2004 017 674 A1.
- Sealing mirrors are usually made of metals such as aluminum, plastics or composites.
- a sabot body with methods for this is the CH 693 008 A5 removable.
- the DE 80 23 382 U1 claimed a sabot of metal parts and plastic, wherein the metal parts are designed in stamped sheet metal form.
- DE 103 35 273 B4 describes a method and an apparatus for producing a multipart driving ring for a subcaliber projectile in fiber composite construction.
- the sabot Since the sabot must be accelerated with, but does not contribute to the effective mass of the projectile, the sabot should be as light as possible, to use little energy. At the same time, however, the sabot must also be strong enough to absorb the forces occurring during acceleration. Metals have a high strength, but also a high density, ie, the sabot will always be heavy, plastics in turn have a low material strength, so they must be made stronger and / or reinforced and the weight advantage over the metal is at least partially canceled.
- the invention has the object to reduce the weight of propellant mirrors while maintaining their functionality.
- the invention is based on the idea of producing the sabot or the sabot segments from material foams instead of the solid material.
- material foams such as aluminum foam, zinc foam, foaminal, etc.
- the foam material can be used or used either directly or in combination.
- the foam can be used as a sandwich component with layers of the same or a different material, with reinforced fiber material, such as carbon fiber or metal fibers, etc., as well as with a core made of another material.
- a reduction of the weight can be realized.
- a foam material eg aluminum foam 0.4 - 1, 0 g / cm 3 compared to aluminum 2.75 g / cm 3
- the reduction of the use of material and the better adaptation of the material to sliding on the tube wall and better guiding / sealing of the projectile are advantageously achieved. Because it is now possible to use a different material at the contact surface to the gun barrel than the rest of the body.
- the foam material may be a metal foam such as aluminum foam, zinc foam, Foaminal, etc., wherein the foam material as a sandwich component with layers of the same or another material, a reinforced fiber material such as carbon fibers, metal fibers, etc. and / or a Core can be used from a different material. This makes it possible to provide parts of the surface of the sabot with a different material than the residual body.
- a sabot 1 consisting of at least two sabot cages or segments 2, 3, which dissolve in a known manner at the exit from an unspecified gun barrel from bullet core (penetrator) 4 and fall off.
- the sabot segments 2, 3 are at least partially formed of a metal foam 5, etc., which forms, for example, in sandwich structure, the base body or the segments 2, 3.
- the preparation of the sabot 1 is mixed from a base material, preferably pulverulent and possibly with the addition of composite fibers and additives and a necessary amount of blowing agent and pressed into a frothable blank. This can be done either by batchwise pressing, extrusion, (co) extruding, isostatic pressing, etc., that is, in any known type of compacting / compressing.
- the mixture on a support material, for. B. metal sheet applied and solidified to a so-called sandwich structure.
- the mixture may also be added directly to a corresponding mold.
- the material After molding and shaping the blank or filling the non-illustrated molds of the manufacturing apparatus, the material is heated and expanded by the blowing agent. As a result, a foamed body is formed, which could possibly be further processed mechanically or can.
- a further material could be applied by thermal spraying in order to be able to modify the contact properties to the tube.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009049440A DE102009049440A1 (de) | 2009-10-14 | 2009-10-14 | Treibspiegel |
PCT/EP2010/005659 WO2011044980A1 (de) | 2009-10-14 | 2010-09-15 | Treibspiegel |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2488821A1 true EP2488821A1 (de) | 2012-08-22 |
Family
ID=43397606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10759814A Withdrawn EP2488821A1 (de) | 2009-10-14 | 2010-09-15 | Treibspiegel |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2488821A1 (de) |
DE (1) | DE102009049440A1 (de) |
WO (1) | WO2011044980A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016112666A1 (de) | 2016-07-11 | 2018-01-11 | Rheinmetall Waffe Munition Gmbh | Treibkäfig mit bionischen Strukturen |
GB2578572B (en) | 2018-10-30 | 2022-08-17 | Bae Systems Plc | A sabot |
CN109913776A (zh) * | 2019-03-28 | 2019-06-21 | 中国飞机强度研究所 | 一种纤维增强开孔泡沫铝及其制备方法 |
CN116105553B (zh) * | 2023-02-20 | 2024-04-09 | 北京理工大学 | 一种导弹高速侧面击水柔性降载装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2928348A (en) * | 1955-01-07 | 1960-03-15 | William A Zisman | Projectile rotating band |
US3430572A (en) * | 1966-11-22 | 1969-03-04 | Avco Corp | Disintegrating sabot |
CH536481A (de) | 1971-03-29 | 1973-06-15 | Oerlikon Buehrle Ag | Treibspiegelgeschoss und Verfahren zu dessen Herstellung |
DE2308428A1 (de) * | 1973-02-21 | 1974-08-29 | Diehl Fa | Hartkerngeschoss |
DE2644154A1 (de) * | 1976-09-30 | 1982-09-09 | Deutsch-Französisches Forschungsinstitut Saint-Louis, Saint-Louis | Elemente aus schaumstoff in der geschosskonstruktion |
DE2945291A1 (de) * | 1979-11-09 | 1981-05-21 | Rheinmetall GmbH, 4000 Düsseldorf | Treibkaefig fuer ein unterkalibriges geschoss |
DE8023382U1 (de) | 1980-09-03 | 1987-02-26 | Rheinmetall Gmbh, 4000 Duesseldorf, De | |
DE3034471A1 (de) * | 1980-09-13 | 1982-04-29 | Dornier System Gmbh, 7990 Friedrichshafen | Wuchtgeschoss |
DE4318340A1 (de) * | 1993-06-02 | 1994-12-08 | Dynamit Nobel Ag | Treibkäfig für ein Unterkalibergeschoß |
DE19625273A1 (de) * | 1996-06-25 | 1998-01-15 | Bundesrep Deutschland | Faserverstärkter Treibkäfig |
CH693008A5 (de) | 1998-11-06 | 2003-01-15 | Contraves Pyrotec Ag | Treibspiegelkörper für Unterkalibergeschoss und Verfahren zu dessen Herstellung. |
DE19929915A1 (de) | 1999-06-29 | 2001-01-18 | Rheinmetall W & M Gmbh | Patrone mit einem Treibkäfiggeschoß |
DE10335273B4 (de) | 2002-08-16 | 2008-12-04 | Deutsch-Französisches Forschungsinstitut Saint-Louis | Verfahren und Vorrichtung zur Herstellung eines mehrteiligen Treibrings für ein Unterkalibergeschoß in Faserverbundbauweise |
DE102004017674A1 (de) | 2004-04-10 | 2005-10-27 | Rheinmetall Waffe Munition Gmbh | Verfahren zur Herstellung eines segmentierten Treibkäfigs für ein unterkalibriges Wuchtgeschoss |
US7314006B1 (en) * | 2004-09-30 | 2008-01-01 | United States Of America As Represented By The Secretary Of The Army | Nonlethal canister tank round |
-
2009
- 2009-10-14 DE DE102009049440A patent/DE102009049440A1/de not_active Withdrawn
-
2010
- 2010-09-15 WO PCT/EP2010/005659 patent/WO2011044980A1/de active Application Filing
- 2010-09-15 EP EP10759814A patent/EP2488821A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2011044980A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102009049440A1 (de) | 2011-07-07 |
WO2011044980A1 (de) | 2011-04-21 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20120229 |
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AK | Designated contracting states |
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DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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INTG | Intention to grant announced |
Effective date: 20130409 |
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INTG | Intention to grant announced |
Effective date: 20130416 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20130827 |