GB2453659A - A bomb explosive filling comprising an explosive charge and an inert material - Google Patents
A bomb explosive filling comprising an explosive charge and an inert material Download PDFInfo
- Publication number
- GB2453659A GB2453659A GB0818583A GB0818583A GB2453659A GB 2453659 A GB2453659 A GB 2453659A GB 0818583 A GB0818583 A GB 0818583A GB 0818583 A GB0818583 A GB 0818583A GB 2453659 A GB2453659 A GB 2453659A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bomb
- explosive
- filling
- charge
- inert material
- 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- Withdrawn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
- 239000002360 explosive Substances 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 title claims abstract description 26
- 230000000694 effects Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000010354 integration Effects 0.000 claims abstract description 3
- 230000003993 interaction Effects 0.000 claims abstract description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 1
- 229920000642 polymer Polymers 0.000 description 4
- 238000005474 detonation Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002889 sympathetic effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B25/00—Fall bombs
-
- 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
- F42B12/207—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 the explosive material or the construction of the high explosive warhead, e.g. insensitive ammunition
-
- 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
- F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/02—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges
- F42B33/0214—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges by casting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/02—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges
- F42B33/0285—Measuring explosive-charge levels in containers or cartridge cases; Methods or devices for controlling the quantity of material fed or filled
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A bomb explosive filling is disclosed comprising a charge of explosive and a charge of an inert material. The charge of inert material may be arranged in the bomb radially external to the charge of explosive material. A lining material may be provided between the bomb case and the inert material and/or between the inert material and the charge of explosive in order to provide specific protection from any possible interaction of the components. By varying the ratio of an inert material to an explosive filling in the same bomb, it is possible to provide the end user with a selection of weapons effects whilst retaining the same bomb case and requiring no further military aircraft integration. A method of filling a bomb using such a charge is also disclosed.
Description
A BOMB, BOMB EXPLOSIVE FILLING
AND A METHOD OF FILLING A BOMB
This invention relates to a bomb and in particular to a novel explosive filling and method of filling a bomb.
Most existing air-dropped bombs comprise a metallic case filled to capacity with an explosive filling and often comprising features to protect the filling from dynamic heating in carried flight and having the facility to interface with certain fuzing components, suspension equipment, guidance kits and tail units.
These bombs display a variety of terminal effects including but not limited to: a. Blast b. Fragmentation c. Incendiary effects d. Thermobarjc effects The method used to determine these terminal effects is that of bomb size and explosive capacity. The larger the bomb, the greater the terminal effect as a general rule.
Existing military stockpiles may consist of air-dropped bombs that have excessive terminal effects and are therefore unsuitable for use against targets that require low-collateral damage effects. In addition, the cost of integrating new, possibly smaller bombs onto military aircraft is often prohibitive. In operations, bombs having high collateral effect can only be used against certain targets and therefore limits the operational effectiveness of the bomb and increases the whole life costs.
Modern bombs display certain insensitivities to external stimuli such as fire, slow heating, bullet or fragment attack. In addition, air-dropped bombs are difficult to protect against the effects of Sympathetic Detonation where one bomb exploding in close proximity to another would also detonate the adjacent bomb or bombs.
The present invention stems from our appreciation that there may be ways in which new or existing bombs may be filled from new, or in retrospect, in a way that produces reduced terminal effects and hence lower collateral damage.
According to one aspect of our invention we provide a bomb explosive filling comprising a charge of explosive and a charge of an inert material.
The effect of incorporating inert material can be pre-determined through modelling and trials before bomb filling takes place.
By varying the ratio of an inert material to an explosive filling in the same bomb, it is possible to provide the end user with a selection of weapons effects whilst retaining typically the same bomb case and requiring no further military aircraft integration.
Current legislation imposes a condition upon manufacturers of new bombs in so far as they are to be as insensitive to external stimuli as possible. This is often achieved by the use of specifically insensitive explosives and the use of certain mechanical means to vent the build up of internal pressure and thereby forestall the onset of an unwanted detonation.
The present invention can provide increased safety from the effects of Sympathetic Detonation by the use of relatively insensitive explosive fillings. This can be further improved by arranging the charge of an inert material radially external to the charge of explosive material, thereby increasing the separation distance between live explosive fills in adjacent bomb by virtue of the inert filling surrounding them.
The invention enables a variable of tuned' fill to be achieved.
In a preferred method in accordance with the invention the variable or "tuned" fill is achieved in two stages at bomb filling by: a. the use of certain mandrels inserted into the empty bomb case during filling and around which an inert material having similar Consistency, setting properties and mass is poured and: b. after the material has set hard, the mandrel is removed and the live explosive filling is added and the bomb sealed, conveniently in the normal way.
Modern explosive fills may consist of Polymer Bonded Explosives having an inert polymer base with the explosive mixed in. The mass, poring and setting properties of the inert polymer does not differ significantly from that of the mixed polymer/explosive and therefore provides an exceptionally stable inert filling for the first stage of the filling process.
Other inert materials may be used given the need to prevent any adverse chemical or physical reaction with the bomb case or the live explosive fill.
Certain lining materials may be used between the bomb case and the inert filing and between the inert filling and the live filling in order to provide specific protection from any possible interaction of the components.
This invention can be used for filling new bombs and for re-filling old bombs that have had their previous ep1osive fill removed.
The accompanying drawing shows, by way of example only, schematic cut-away views of a bomb that has been filled in accordance with the invention. p
Claims (8)
1. A bomb explosive filling comprising a charge of explosive and a charge of an inert material.
2. A bomb comprising an explosive filling comprising a charge of explosive and a charge of an inert material.
3. The bomb of claim 2 wherein the charge of explosive comprises a relatively insensitive explosive.
4. The bomb of claim 2 or claim 3 wherein the charge of an inert material can be arranged in the bomb radially external to the charge of explosive material, thereby increasing the separation distance in use of the bomb between live explosive fills in adjacent bomb by virtue of the inert filling surrounding them.
5. The bomb of any one of claims 2 to 4 wherein the ratio of an inert material to the charge of explosive is selected to provide the end use with the desired weapons effects such that no modification of the integration in use with the standard bomb carrier.
6. The bomb of any one of claims 2 to 6 wherein a lining material is used between the bomb case and the inert filling andfor between the inert filling and the live filling in order to provide specific protection from any possible interaction of the components.
7. A method of filling a bomb comprising a step of partially filling the bomb with a charge of explosive and partially filling the bomb with a charge of an inert material. p
8. A method of bomb filling by: a. the use of certain mandrels inserted into the empty bomb case during filling and around which an inert material having similar consistency, setting properties and mass is poured and: b. after the inert material has set hard, the mandrel is removed and the live explosive filling is added and the bomb sealed, conveniently in the normal way.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0719982.1A GB0719982D0 (en) | 2007-10-12 | 2007-10-12 | Bombs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0818583D0 GB0818583D0 (en) | 2008-11-19 |
| GB2453659A true GB2453659A (en) | 2009-04-15 |
Family
ID=38788083
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0719982.1A Ceased GB0719982D0 (en) | 2007-10-12 | 2007-10-12 | Bombs |
| GB0818583A Withdrawn GB2453659A (en) | 2007-10-12 | 2008-10-10 | A bomb explosive filling comprising an explosive charge and an inert material |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0719982.1A Ceased GB0719982D0 (en) | 2007-10-12 | 2007-10-12 | Bombs |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2048470A3 (en) |
| GB (2) | GB0719982D0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140331882A1 (en) * | 2011-12-14 | 2014-11-13 | Eurenco | Munition, charge for such a munition, and method of manufacturing such a munition |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1605340A (en) * | 1925-09-25 | 1926-11-02 | Charles H Gallagher | Automatic brake |
| US3518942A (en) * | 1960-10-14 | 1970-07-07 | Us Navy | Antiaircraft projectile |
| GB2017273A (en) * | 1978-03-25 | 1979-10-03 | Dynamit Nobel Ag | Manufacturing compressed explosive charges |
| US4516501A (en) * | 1980-05-02 | 1985-05-14 | Messerschmitt-Bolkow-Blohm Gmbh | Ammunition construction with selection means for controlling fragmentation size |
| GB1605340A (en) * | 1976-01-21 | 1992-01-02 | Messerschmitt Boelkow Blohm | Bombs and projectiles |
| US6041713A (en) * | 1997-05-30 | 2000-03-28 | Rheinmetall W & M Gmbh | Practice projectile |
| US20020096080A1 (en) * | 2001-01-19 | 2002-07-25 | Snpe | Fragmentation explosive munition element |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2040791A6 (en) * | 1968-05-17 | 1971-01-22 | Riecky Joseph | Casting profiled explosive charges |
| US4152987A (en) * | 1977-02-18 | 1979-05-08 | The United States Of America As Represented By The Secretary Of The Navy | Impermeable polymer bomb liner for use with TNT containing explosives |
| CH680750A5 (en) * | 1989-12-06 | 1992-10-30 | Eidgenoess Munitionsfab Thun | |
| DE102005021758B4 (en) * | 2005-04-29 | 2009-09-10 | TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH | Device for plastic-bonded cast explosives |
| US8191479B2 (en) * | 2006-12-20 | 2012-06-05 | Ruhlman James D | Reduced collateral damage bomb (RCDB) including fuse system with shaped charges and a system and method of making same |
-
2007
- 2007-10-12 GB GBGB0719982.1A patent/GB0719982D0/en not_active Ceased
-
2008
- 2008-10-10 EP EP08253316A patent/EP2048470A3/en not_active Withdrawn
- 2008-10-10 GB GB0818583A patent/GB2453659A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1605340A (en) * | 1925-09-25 | 1926-11-02 | Charles H Gallagher | Automatic brake |
| US3518942A (en) * | 1960-10-14 | 1970-07-07 | Us Navy | Antiaircraft projectile |
| GB1605340A (en) * | 1976-01-21 | 1992-01-02 | Messerschmitt Boelkow Blohm | Bombs and projectiles |
| GB2017273A (en) * | 1978-03-25 | 1979-10-03 | Dynamit Nobel Ag | Manufacturing compressed explosive charges |
| US4516501A (en) * | 1980-05-02 | 1985-05-14 | Messerschmitt-Bolkow-Blohm Gmbh | Ammunition construction with selection means for controlling fragmentation size |
| US6041713A (en) * | 1997-05-30 | 2000-03-28 | Rheinmetall W & M Gmbh | Practice projectile |
| US20020096080A1 (en) * | 2001-01-19 | 2002-07-25 | Snpe | Fragmentation explosive munition element |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140331882A1 (en) * | 2011-12-14 | 2014-11-13 | Eurenco | Munition, charge for such a munition, and method of manufacturing such a munition |
| US9476683B2 (en) * | 2011-12-14 | 2016-10-25 | Eurenco | Munition, charge for such a munition, and method of manufacturing such a munition |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2048470A2 (en) | 2009-04-15 |
| GB0818583D0 (en) | 2008-11-19 |
| GB0719982D0 (en) | 2007-11-21 |
| EP2048470A3 (en) | 2010-11-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |