GB2481192A - Controlled detonation of pressure triggered explosive device - Google Patents
Controlled detonation of pressure triggered explosive device Download PDFInfo
- Publication number
- GB2481192A GB2481192A GB1009797.0A GB201009797A GB2481192A GB 2481192 A GB2481192 A GB 2481192A GB 201009797 A GB201009797 A GB 201009797A GB 2481192 A GB2481192 A GB 2481192A
- Authority
- GB
- United Kingdom
- Prior art keywords
- deployment
- roller part
- roller
- explosive device
- inclined surface
- 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- Withdrawn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 abstract description 27
- 238000005474 detonation Methods 0.000 title abstract description 9
- 230000001960 triggered effect Effects 0.000 title abstract description 8
- 238000000034 method Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 description 10
- 238000007664 blowing Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H11/00—Defence installations; Defence devices
- F41H11/12—Means for clearing land minefields; Systems specially adapted for detection of landmines
- F41H11/16—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles
- F41H11/30—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles with rollers creating a surface load on the ground, e.g. steadily increasing surface load, for triggering purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H11/00—Defence installations; Defence devices
- F41H11/12—Means for clearing land minefields; Systems specially adapted for detection of landmines
- F41H11/13—Systems specially adapted for detection of landmines
- F41H11/138—Mechanical systems, e.g. prodding sticks for manual detection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H11/00—Defence installations; Defence devices
- F41H11/12—Means for clearing land minefields; Systems specially adapted for detection of landmines
- F41H11/14—Explosive line charges, e.g. snakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
A method of performing a controlled detonation of a pressure-triggered explosive device X, includes the steps of positioning a deployment part 30 relative to the explosive device, the deployment part comprising a body 32 having a first end and a second end, and an inclined surface 34 which is inclined upwardly from the first end to the second end. A roller part 10 is then positioned on the inclined surface 34 of the deployment part, using a holding element to hold the roller part 10 in position relative to the deployment part 30. The holding element is released to cause the roller part 10 to move towards the first end of the inclined surface 34, wherein the deployment part 30 is positioned such that the movement of the roller part 10 causes the roller part 10 to come into contact with the explosive device X.
Description
Title: Method and apparatus for performing controfled detonation of an explosive device.
Description of Invention
The present invention relates to apparatus and a method for performing a controlled detonation of a pressure4riggered explosive device.
Pressure4riggered explosive devices are well known, and are commonly used in war zones to inflict damage upon vehicles and personnel Devices such as improvised explosive devices (IEDsI, and conventional landmines, may be deployed by a party involved in a military conflict to cause damage, and often casualties and fatalities, to an opposing force. Such devices are often well camouflaged1 or buried, so they are difficult to locate. This causes uncertainty and trepidation in those against whom the devices are targeted. A great problem with lEDs is that they are indiscriminate in nature, and may be triggered by civilians.
Once an lED has been located, safe removal of the device is not straightforward A large number of casualties and fatalities result from attempts to deactivate explosive devices, often due to instability of the device itself To avoid the risk of casualties or in a situation where no appropriately-trained personnel are present an alternative to deactivating an lED is to perform a controlled detonation of the device Equipment for detonating explosive devices is known, but such equipment is typically expensive to manufacture and requires a high level of training to provide personnel with the knowledge necessary to use the equipment.
Furthermore, the equipment can be cumbersome, and inappropriate for carrying by personnel or even light vehicles in combat zones.
The present invention aims to reduce or overcome these problems.
According to a first aspect of the invention, we provide a method of performing a controlled detonation of a pressure-triggered explosive device including the steps of positioning a deployment part relative to the explosive device, the deployment part comprising a body having a first end and a second end, and an inclined surface which is inclined upwardly from the first end to the second end, positioning a roller part on the inclined surface of the deployment part using a holding element to hold the roller part in position relative to the deployment part, and releasing the holding element to cause the roller part to move towards the first end of the inclined surface, wherein the deployment part is positioned such that the movement of the roller part causes the roller part to come into contact with the explosive device.
The method may further include the step of adding a loading material to a loading chamber of the roller part, to increase the weight of the roller part.
The method may further include the step of inflating an inflatable chamber of the roller part by blowing or pumping a gas into the inflatable chamber.
The holding element may comprise an elongate inelastic part, and the roller part may include an attachment means for attaching the elongate inelastic part thereto and the step of using the holding element to hold the roller part in position relative to the deployment part may include attaching the elongate inelastic part to the roller part using the attachment means The step of using the holding element to hold the roller part in positionS relative to the deployment part may further include extending the elongate inelastic part from the roller part in a lateral direction towards the second end of the inclined surface of the deployment part, and maintaining tension in:the elongate inelastic pad once it is attached to the roller pad, so as to prevent movement of the roller pad towards the first end of the incUned surface.
The step of releasing the holding element may compdse releasing the tension in the elongate inelastic part.
The method may further rnclude the step of inflating the body of the deployment pad by blowing or pumping a gas into the inflatable element, prior to positioning the roller patton the inclined surface of the deployment part.
Positioning the deployment part may include securing the deployment part relative to a surface on which it is deployed by way of securing means.
According to a second aspect of the invention, we provide apparatus for performing a controlled detonation of a pressure-triggered explosive device, including a roller part and a deployment part, the deployment part comprising a body which is suitable for supporting the weight of the roller part, the deployment part having a first end and a second end, the upper surface of the body forming an inclined surface which is inclined upwardly between the first end and the second end, and the roller part comprising a generally cylindrical body.
The apparatus may further include a holding element for holding the roller part in position relative to the deployment part.
The holding element may comprise an elongate inelastic part and the roller part includes attachment means for attaching the elongate inelastic part to the roller part.
The roller part may include a loading chamber for receiving loading material, the loading chamber having a sealable inlet for allowing loading material to enter the loading chamber.
The roller part may include an inflatable chamber having a valve inlet for inflation.
The deployment part may further include a wall disposed at its second end The wall may inc'ude an aperture for receiving the elongate inelastic part The body of the deployment part may be inflatable, and a valve may be disposed in the wall of the body for inflation.
The deployment part may include securing means for securing the deployment part relative to a surface.
The securing means may comprise a plurality of brackets extending outwardly from the body of the deployment means, each bracket including an aperture for receiving a fastener for holding the bracket relative to the surface.
The invention will now be described by way of example only with reference to the accompanying drawings, wherein: Figure Us a perspective view of a roller part according to the invention, Figure 2 is a cross-sectional view of the roller part of Figure 1; Figure 3 is a perspective view of a deployrnent part according to the invention; Figure 4 is a perspective view of the apparatus according to the invention, shown in deployment relative to an explosive device, and Figure 5 is a perspective view of the apparatus of Figure 4, wherein the roller part is shown in contact with the explosive device.
With reference to the drawings, the apparatus includes a roller part 10 and a deployment part 30. Figures 1 and 2 show a roller part 10, comprising a generally cyhndrical body 12 The roller part 10 includes a loading chamber 14 disposed within the body 12 and positioned to lie along its central axis, and an inflatable chamber 18 partially surrounding the loading chamber 14 and disposed between the ioading chamber 14 and the walls of the body 12 In the embodiment shown the loading chamber 14 has a partiafly cylindrical structure, wherein the diameter of the loading chamber 14 varies along its length (see Figure 2) However it should be understood that the loading chamber 14 may be constructed with a different cross-sectional shape to that shown.
The loading chamber 14 is connected to the wall of the body 12 at at least one end of the body 12. A sealable inlet 16 is provided in the wall of the body 12 at this location, and the inlet 16 is connected to an opening 26 in the loading chamber 14 wall. A cap 28 is provided to cover the inlet 16, which may be opened and closed by a user. The cap 28 may be attached to the inlet 16, as shown in Figure 2, or may be detachable from the body 12 and connected by way of a screw-threaded fhting or the like.
When the roller part 10 is being transported and is not in use, the loading chamber 14 is typically empty, which ensures that the roller part 10 has a relatively low weight, which makes it easier to transport When the apparatus is deployed for use the cap 28 is removed, and a loading material is placed within the loading chamber 14, through the inlet 16 The cap 28 is then reattached to seal the loading chamber 14 before use. The loading material is typically sand, stones or water, but it will be understood that alternative materials or fluids may be used. The addition of loading material to the loading chamber 14 increases the weight of the roller part 10. Increasing the weight of the roller part 10 increases the likelihood that a pressure-triggered explosive device will be detonated through contact with the roller part 10.
A valve inlet 20 is disposed in a wall of the inflatable chamber 18, located on and end surface of the body 12, suitable for attaching an air pump for connection with the inflatable chamber 18. The inflatable chamber 18 may be inflated by a user prior to using the roller part 10, by blowing into the valve inlet or by attaching a pump such as a hand-pump or automatic pump (or any suitable pump), of a type that is generally known, to the valve inlet 20 and operating the pump to cause air to flow into the inflatable chamber 18. This causes inflation of the inflatable chamber 18 which in turn causes the boay 12 to adopt a generally cylindrical shape as is shown in the drawings It should be understood that prior to inflating the inflatable chamber 18, the shape of the body 12 may not be cylindrical, and that the body 12 takes its shape when inflated. While it is anticipated that air will be used to inflate the inflatable chamber, an alternative gas (preferably an inert gas) may be used instead, and may be supplied from a pressurised cylinder, for instance.
Since the inflation of the inflatable chamber 18 may be performed manually by a user, or by using a standard pump, the step of inflating the chamber may be performed by personnel at the site where the apparatus is to be deployed.
This means that the roller part 10 can be transported in a deflated state to make it easier to transport, and then inflated when required An attachment means 22 is disposed on the rounded outer wall of the body 12 of the roller part 10 The attachment means 22 provides a suitable filling for connecting a holding element 50 to the roller part 10 The holding element 50 may be any mechanism to releasably hold the roller part 10 in place on a deployment part. In this example, the holding element 50 is an elongate inelastic part 52, such as a length of string, rope, wire, or the like. In the embodiment shown, the attachment means 22 is a bracket, which includes an aperture 24 through which the string 52 can be threaded, aflowing the string 52 to be securely tied to the bracket.
Figure 3 shows deployment part 30 which has a body 32, the upper surface of which forms an inclined surface 34. The body 32 must be constructed from material suitable to support the weight of the roller part 10 in its loaded state, in which loading chamber 14 contains loading material The inclined surface 34 is angled upwardly along the length of the body 32 between a first end 36 and a second end 38.
The deployment part 30 further includes a wall 40 which extends upwardly from the body 32 at its second end 38 The wall 40 includes an aperture 42 suitable for receiving the holding part 50.
The deployment part 30 is provided with securing means, to enable the deployment part 30 to be secured in position relative to a surface At each of the first end 36 and second end 38 of the body 32, a bracket 44 extends from the base of the body 32 Each bracket 44 provides an aperture 46 through which a fastener such as a peg, or the like, can be inserted.
The body 32 of the deployment part 30 may provide a valve inlet to enable a user to blow ar into the body 32, or to allow a pump, such as an am pump, to be connected to the body 32 The body 32 may be nflated by a user prior to deploying the deployment part 30, by blowing air into the body 32 or by attaching a pump such as a hand-pump (or any other suitable pump) to the valve inlet and operating the pump The body 32 may be transported, prior to deployment, in a deflated state, which makes it easier to store and transport the deployment part 30. When the deployment part 30 is required for use, the body 32 may be inflated by a user using a standard pump as described above.
A method of using the apparatus described above shall now be described with reference to Figures 4 and 5 of the drawings.
Figure 4 shows a deployment part 30 positioned relative to an explosive device X, a roller part 10 positioned on the inclined surface 34 of the deployment part 30 and a holding part 50 attached to the roller part 10 to hold the roller part 10 in position relative to the deployment part 30 The deployment part 30 is positioned such that the first end 36 of the body 32 is close to the explosive device X, and the inclined surface 34 extends from the first end 34 in a direction away from the explosive device X Having positioned the deployment part 30 fasteners are inserted through the apertures 46 in the brackets 44 to secure the deployment part 30 in position.
The deployment part 30 may be inflated at this stage, or at an earlier stage prior to it being positioned or secured.
The inflatable chamber 18 of the roller part 10 is inflated so that the roller part assumes a generafty cylindrical shape Loading material is placed within the loading chamber 14, and the cap 28 resealed to close the loading chamber 14, to provide the roller part 10 with sufficient weight to detonate a pressure-triggered explosive device.
The roller part 10 is then positioned on the inclined surface 34 of the deployment part 30, at Ieasta point at least a short distance from the first end 36 of the body 32. The roller part 10 is positioned such that its length lies roughly parallel to the first and second ends, as shown in the drawings such that when the roller part 10 is allowed to roll under its own weight, it rolls down the inclined surface 34 towards the explosive device X. The string 52 of the holding part 50 is secured to the attachment means of the roller part 10, by threading the string through the aperture 24 and tying it securely to the bracket 22. The string 52 is then fed through the aperture 42 in the wall 40 at the second end 38 of the body 32 of the deployment part 30, the tension in the string 52 being maintained by pulling it taut at all times. The user, holding the string 52, retreats away from the deployment part 30s, maintaining tension in the string 52 By moving in a direction directly away from the explosive device X, the user is at least partially shielded from the device by the wall 40.
When the user has retreated a safe distance (i e far enough not to be adversely affected by the detonation of the explosIve device X), the user lets the tension in the string 62 fall, by releasing the string 52 Once the string 52 has been released, the roller part 10 moves under gravity, and rolls down the inclined surface 34 towards the first end 36 of the deployment part 30, The roller part 10 has sufficient momentum that when it reaches the first end 36 of the deployment part 30, it contnues to roll towards the explosive device X until it contacts the device. At this point, the weight of the roller part 10 triggers the pressure-triggered detonator of the explosive device X, causing the device to explode. In this way, the detonation of the explosive device can be carried out in a controlled manner, preventing injury of personnel It should be noted that the inclined surface 34 of the deployment part 30 may alternatively be any number of inclined elements suitable for supporUng a roller part 10, and need rot comprise a single surface.
When used in this specification and claims the terms comprises" and "comprising' and variations thereof mean that the specified features, steps or integers are included. The terms are not to be interpreted to exclude the presence of other features, steps or components.
The features disclosed in the foregoing description, or the following claims or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attauitng the disclosed result, as appropriate, may separately, or in any combinaflon of such features, be utilised for realising the invention n diverse forms thereof.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1009797.0A GB2481192A (en) | 2010-06-11 | 2010-06-11 | Controlled detonation of pressure triggered explosive device |
| PCT/GB2011/051063 WO2011154729A1 (en) | 2010-06-11 | 2011-06-06 | Method and apparatus for performing controlled detonation of an explosive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1009797.0A GB2481192A (en) | 2010-06-11 | 2010-06-11 | Controlled detonation of pressure triggered explosive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201009797D0 GB201009797D0 (en) | 2010-07-21 |
| GB2481192A true GB2481192A (en) | 2011-12-21 |
Family
ID=42471507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1009797.0A Withdrawn GB2481192A (en) | 2010-06-11 | 2010-06-11 | Controlled detonation of pressure triggered explosive device |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2481192A (en) |
| WO (1) | WO2011154729A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2496980A (en) * | 2011-11-23 | 2013-05-29 | Cintec Int Ltd | Blast mitigation device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2199289A (en) * | 1986-12-30 | 1988-07-06 | Nash Frazer Ltd | Minefield clearing systems |
| JP2004053237A (en) * | 2002-07-23 | 2004-02-19 | Koo Fumiko | Mine sympathetic detonation device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2516534B2 (en) * | 1992-08-25 | 1996-07-24 | 正則 高杉 | Land mine disposal robot |
| GB2369090A (en) * | 2001-02-13 | 2002-05-22 | Ian Bell | Fluid filled mine activation apparatus |
-
2010
- 2010-06-11 GB GB1009797.0A patent/GB2481192A/en not_active Withdrawn
-
2011
- 2011-06-06 WO PCT/GB2011/051063 patent/WO2011154729A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2199289A (en) * | 1986-12-30 | 1988-07-06 | Nash Frazer Ltd | Minefield clearing systems |
| JP2004053237A (en) * | 2002-07-23 | 2004-02-19 | Koo Fumiko | Mine sympathetic detonation device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2496980A (en) * | 2011-11-23 | 2013-05-29 | Cintec Int Ltd | Blast mitigation device |
| GB2496980B (en) * | 2011-11-23 | 2015-05-27 | Cintec Int Ltd | Device for protecting against blast from ground located explosive devices |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201009797D0 (en) | 2010-07-21 |
| WO2011154729A1 (en) | 2011-12-15 |
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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) |