EP1269104A1 - Explosive charge for a warhead - Google Patents
Explosive charge for a warheadInfo
- Publication number
- EP1269104A1 EP1269104A1 EP01925500A EP01925500A EP1269104A1 EP 1269104 A1 EP1269104 A1 EP 1269104A1 EP 01925500 A EP01925500 A EP 01925500A EP 01925500 A EP01925500 A EP 01925500A EP 1269104 A1 EP1269104 A1 EP 1269104A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- explosive charge
- explosive
- layer
- warhead
- initiation
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
- F42B12/208—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type characterised by a plurality of charges within a single high explosive warhead
Definitions
- the invention relates to an explosive charge for a warhead which, in addition to the ignition chain for detonative initiation of the explosive charge, has a further ignition chain for deflagrative initiation.
- the performance of a warhead can be reduced in a controlled manner by countering the detonative initiation with a deflagrative initiation.
- the performance of the explosive charge of the warhead which is unchanged compared to the previous embodiments, can thus be set between 0 and 100%.
- 1 a shows a section through an explosive charge with alternately different layers
- Fig. 4 diagram showing the behavior of the radius of curvature (or run-up distance) R to initiation pressure P.
- 1a shows, in a highly simplified manner, a section through the explosive charge of a warhead as an example of the invention.
- the explosive charge is built up in layers, so that layers 3a, ..., 3d with explosive that can be detonated alternate with further layers 4a, ..., 4c made of explosive that can only be deflagrated.
- detonatively implementable explosive is understood to mean a high-energy (explosive) explosive which is easy to initiate, while the deflagrative implementable explosive consists of a less energetic and more difficult to initiate explosive. It is entirely possible within the scope of the invention to use different explosives with the explosive layers 3a, ..., 3d differing explosiveness and sensitivity.
- inert layers are also provided instead of one or more of the further layers 4a,... 4c.
- damping layers then consist of plastics, metals or sandwich layers of these materials.
- PU foam can also be used as a damping material.
- the initiation for deflagrative or detonative implementation is preferably carried out from the opposite ends of the explosive charge.
- the ignition chain 1 on the left side is provided for deflagrative triggering, while the ignition chain 2 on the right side is used for detonative initiation.
- the principle of the layered explosives or the alternating layering of explosives and inert material has the result that an unwanted transition within a detonatively implementable explosive layer from deflagration to detonation in the subsequent less sensitive layer is again attributed to deflagration.
- the prerequisite for this is that the ignition chain 1 for the deflagrative initiation applies a lower energy level (stimulus) to the subsequent difficult-to-initiate explosive layer 3a than the further ignition chain 2, which immediately detonatively initiates the easier-to-initiate explosive layer 3d due to its high stimulus ,
- FIG. 2 shows a further solution in addition to FIG. 1a.
- the deflagrative initiation takes place by means of the ignition chain 1 on an explosive charge layer 5 with low explosiveness, so that only a deflagrative implementation is initiated.
- the further layer structure corresponds to FIG. 1a with alternating explosive layers 3a,..., 3d that can be detonatively implemented and explosive layers 4a,... 4c that can be implemented deflagratively or damping layers.
- the pressure level thus remains within a narrow bandwidth according to FIG. 1b.
- the detonative triggering again takes place via the further ignition chain 2 on the explosive layer 3d with high explosiveness. It is not excluded within the scope of the present invention to also use combinations of the layered explosive charges explained with the aid of the examples.
- FIG. 3 An alternative to the previous exemplary embodiments is shown in FIG. 3.
- the deflagrative initiation takes place via the ignition chain 1 with a low stimulus to the explosive 3 with high explosiveness.
- Mechanical damping layers 4a, ..., 4d are provided to dampen the developing pressure level. These extend in the manner of a barrier only over part of the cross-section of the explosive charge 3.
- the materials used for the damping layers, in addition to PU foams or plastic plates, are sandwich composite layers made of plastic and metal. Successive damping layers are arranged so that they mutually overlap like a labyrinth in the direction of the detonation wave. The detonation front thus runs in arcs with the radius R over the barrier-like damping layers 4a,..., 4d.
- the detonation front cannot move around the barriers on any radii R (cf. FIG. 4).
- the spread of the detonation is suppressed below a minimum value of the radius R which is dependent on the respective explosive type. Above this value, the desired damping of the energy level takes place to a level at which a deflagrative conversion of the entire explosive 3 takes place on average.
- the detonation if the explosive charge 3 is initiated detonatively by the further ignition chain 2 with a high stimulus, the detonation generates shock waves, the amplitude of which cannot be reduced by the mechanical damping layers 4a,... 4d to such an extent that the detonation wave does not pass through would.
- the detonation takes place unhindered.
- the radii of curvature of the detonation (R ⁇ R H see FIG. 4) are so small that the detonation can also circulate around the barriers.
- FIG. 4 shows the physical relationship between the curvature behavior of explosive detonation waves in the non-linear dependence on the initiation pressure (or stimulus).
- the running distance L is considered in accordance with FIG. 1b (lower half).
- the start-up distance I (cf. FIG. 1b) between two barriers 4b, 4c must, on the one hand, be significantly smaller than the value, so that there is no start of a detonation at the initiation pressure PL of the ignition chain ZK1 with a low stimulus.
- the starting distance for this is L .
- the distance I should be somewhat larger than the value LH, so that there is a safe detonation at the higher initiation pressure PH of the opposite ignition chain ZK2.
- the start-up distance for this is LH.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10015070 | 2000-03-25 | ||
DE2000115070 DE10015070B4 (en) | 2000-03-25 | 2000-03-25 | Explosive charge for a warhead |
PCT/EP2001/003290 WO2001073370A1 (en) | 2000-03-25 | 2001-03-22 | Explosive charge for a warhead |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1269104A1 true EP1269104A1 (en) | 2003-01-02 |
EP1269104B1 EP1269104B1 (en) | 2007-08-01 |
Family
ID=7636493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01925500A Expired - Lifetime EP1269104B1 (en) | 2000-03-25 | 2001-03-22 | Explosive charge for a warhead |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1269104B1 (en) |
AU (1) | AU2001252228A1 (en) |
DE (2) | DE10015070B4 (en) |
NO (1) | NO325007B1 (en) |
WO (1) | WO2001073370A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018047160A1 (en) * | 2016-09-08 | 2018-03-15 | Rafael Advanced Defense Systems Ltd | Explosive system |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10125226C2 (en) * | 2001-05-23 | 2003-11-27 | Tdw Verteidigungstech Wirksys | Explosive charge for a warhead |
DE10222184B4 (en) * | 2002-05-18 | 2005-06-09 | TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH | warhead |
DE102005031588B3 (en) * | 2005-07-06 | 2007-01-11 | TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH | Controllable charge of a warhead |
EP2789965B1 (en) | 2013-04-13 | 2015-07-15 | Diehl BGT Defence GmbH & Co.KG | Scalable explosive charge |
EP2789964B1 (en) | 2013-04-13 | 2015-07-15 | Diehl BGT Defence GmbH & Co.KG | Explosive charge for performing either the detonation, deflagration or detonation and deflagration of an explosive material |
AT516929B1 (en) * | 2015-03-10 | 2018-05-15 | Hirtenberger Automotive Safety Gmbh & Co Kg | Pyrotechnic gas generator |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3136251A (en) * | 1963-01-18 | 1964-06-09 | Morris I Witow | Electrically controlled directional warhead |
DE2039131A1 (en) * | 1970-08-06 | 1972-02-10 | Dynamit Nobel Ag | Defined dismantling of the envelope of an explosive device |
US3853059A (en) * | 1971-01-11 | 1974-12-10 | Us Navy | Configured blast fragmentation warhead |
FR2561376B1 (en) * | 1982-05-05 | 1987-04-30 | Saint Louis Inst | EXPLOSIVE FRAGMENTATION MACHINE |
US4823701A (en) * | 1984-09-28 | 1989-04-25 | The Boeing Company | Multi-point warhead initiation system |
GB2224729B (en) * | 1986-06-25 | 1990-07-25 | Secr Defence | Pyrotechnic train |
US5024159A (en) * | 1987-05-14 | 1991-06-18 | Walley David H | Plane-wave forming sheet explosive |
US5266132A (en) * | 1991-10-08 | 1993-11-30 | The United States Of America As Represented By The United States Department Of Energy | Energetic composites |
JPH0648880A (en) * | 1992-06-05 | 1994-02-22 | Trw Inc | Multi-layer type gas generating disk for gas generator |
-
2000
- 2000-03-25 DE DE2000115070 patent/DE10015070B4/en not_active Expired - Fee Related
-
2001
- 2001-03-22 WO PCT/EP2001/003290 patent/WO2001073370A1/en active IP Right Grant
- 2001-03-22 EP EP01925500A patent/EP1269104B1/en not_active Expired - Lifetime
- 2001-03-22 DE DE50112790T patent/DE50112790D1/en not_active Expired - Lifetime
- 2001-03-22 AU AU2001252228A patent/AU2001252228A1/en not_active Abandoned
-
2002
- 2002-09-25 NO NO20024589A patent/NO325007B1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0173370A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018047160A1 (en) * | 2016-09-08 | 2018-03-15 | Rafael Advanced Defense Systems Ltd | Explosive system |
US10823538B2 (en) | 2016-09-08 | 2020-11-03 | Rafael Advanced Defense Systems Ltd. | Explosive system |
Also Published As
Publication number | Publication date |
---|---|
DE10015070B4 (en) | 2005-05-04 |
EP1269104B1 (en) | 2007-08-01 |
WO2001073370A1 (en) | 2001-10-04 |
AU2001252228A1 (en) | 2001-10-08 |
DE10015070A1 (en) | 2001-10-11 |
NO20024589L (en) | 2002-09-25 |
DE50112790D1 (en) | 2007-09-13 |
NO325007B1 (en) | 2008-01-14 |
NO20024589D0 (en) | 2002-09-25 |
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