EP3001136B1 - Dispositif de déviation de soufle d'explosion et véhicule militaire à roues - Google Patents

Dispositif de déviation de soufle d'explosion et véhicule militaire à roues Download PDF

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Publication number
EP3001136B1
EP3001136B1 EP15186961.7A EP15186961A EP3001136B1 EP 3001136 B1 EP3001136 B1 EP 3001136B1 EP 15186961 A EP15186961 A EP 15186961A EP 3001136 B1 EP3001136 B1 EP 3001136B1
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EP
European Patent Office
Prior art keywords
blast
deflection device
hollow profile
military vehicle
profile elements
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.)
Active
Application number
EP15186961.7A
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German (de)
English (en)
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EP3001136A1 (fr
Inventor
Markus Hantel
Kai Müller
Stefan Beschoren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinmetall Waffe Munition GmbH
Original Assignee
Rheinmetall Waffe Munition GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rheinmetall Waffe Munition GmbH filed Critical Rheinmetall Waffe Munition GmbH
Priority to PL15186961T priority Critical patent/PL3001136T3/pl
Publication of EP3001136A1 publication Critical patent/EP3001136A1/fr
Application granted granted Critical
Publication of EP3001136B1 publication Critical patent/EP3001136B1/fr
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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
    • F41H7/00—Armoured or armed vehicles
    • F41H7/02—Land vehicles with enclosing armour, e.g. tanks
    • F41H7/04—Armour construction
    • F41H7/042—Floors or base plates for increased land mine protection
    • 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
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/023—Armour plate, or auxiliary armour plate mounted at a distance of the main armour plate, having cavities at its outer impact surface, or holes, for deflecting the projectile
    • F41H5/026—Slat armour; Nets

Definitions

  • the invention relates to a blast beam deflection device and a wheeled vehicle with a mine protection arrangement, which is additionally provided with the blast deflection device for a higher protection in particular against booby traps.
  • the wheeled vehicles are mainly military wheeled vehicles, although protected wheeled vehicles such as protected limousines, etc., can be provided with the proposed blast-beam deflection device.
  • Mine protection arrangements are often realized by a multilayer bulkhead construction.
  • a lower, facing the threat sheet, for example, serves as a sacrificial sheet and should absorb most of the energy.
  • a middle plate in the bulkhead structure is to ensure the structural integrity of the vehicle. Furthermore, the middle plate should absorb the energy in the form of a dynamic bump. Depending on this dynamic bump, an upper plate is chosen as the footrest for the occupants. The upper plate should prevent any coupling of energy.
  • Mine protection arrangements are intended to protect against booby traps of various kinds.
  • a detonator may be a land mine or an unconventional explosive device (USBV), or improvised explosive device (IED).
  • Explosive traps may, for example, form splinters, and / or generate a shaped charge jet, and / or form a projectile, and / or create a blast.
  • a blast-generating explosive trap If a blast-generating explosive trap is buried beneath a road surface, then the explosive trap generates a blast jet emerging from the road surface after its explosion, whereby the blast jet emerges from the road surface approximately in the form of a truncated cone.
  • the blast jet is a mixture of soil material and explosive gases.
  • the present invention is primarily directed to providing protection from the blast stream.
  • blast After a blast, a blast is created.
  • the English term “blast” could also be replaced by the German name “gas bubble”.
  • the blast or gas bubble spreads with very high pressure and very high speed.
  • a shock wave in the soil material (rock, sand, water) is first generated and immediately transferred to the soil material.
  • This shock wave propagates in all directions through the earth material.
  • the soil compresses and tries to avoid this pressure. This is done on the pavement by the gas bubble with a large amount of soil material produces a frustoconical material output. As already stated, this represents the blast jet.
  • the blast spreads globally in the air and loses its energy accordingly with the reciprocal of the distance in the third power.
  • the propagation speed is approx. 10 000 m / s.
  • the blast stream which includes soil material, the energy was transferred to the soil material very early and very quickly.
  • the frustoconical blast jet emerging from the pavement and containing soil material loses its energy with the reciprocal of the distance in the second power.
  • the propagation speed is approximately at low 1200 m / s.
  • the densities of air (1,200 g / m 3 ) and earth mass (2,100,000 g / m 3 ) differ by a factor of about 1,750.
  • the blast After leaving the road surface, the remaining portion of the pure blast loses, as above already stated its energy with the inverse of the cube of the path of propagation. However, the blast envelops or captivates the blast stream containing the soil material for a certain distance. This wrap or restraint can sustain the effect of the blast jet containing soil material longer.
  • a generic military wheeled vehicle is from the DE 102 50 132 A1 known.
  • the known military wheeled vehicle includes a mine protection arrangement.
  • the mine protection arrangement has an underside directed towards the road surface, which consequently faces the threat direction.
  • the mine protection arrangement is designed to protect against a buried in the ground explosive trap.
  • the mine protection arrangement on the side facing the threat to container, which can be filled with a flowable medium, such as sand or water.
  • the flowable medium provides for a deceleration of a projectile of a projectile-forming Explosive trap (paragraph 0013).
  • the flowable medium ensures that a shock wave passage is advantageously disturbed combined with an extension of the pulse duration.
  • Another, generic military wheeled vehicle shows the DE 196 35 946 A1 ,
  • the mine protection arrangement consists of a direction to the road surface.
  • the deflector deflects the blast and shock front. Part of the energy is transformed into kinetic energy, which goes into deformation and fracture work.
  • the energy absorbing layer provides shock protection and protection against secondary splinters.
  • the US 2008/0111396 A1 describes another, generic military wheeled vehicle.
  • the mine protection arrangement comprises a middle layer consisting of juxtaposed tubes to absorb energy.
  • the US 2011/0277621 A1 concerns a further, generic mine protection arrangement. Like the present invention, specifically a protection against a blast jet (in English: "soil ejecta") of a landmine is to be achieved.
  • the way the US 2011/0277621 is conventional. It proposes a bottom that is V-shaped, so that the blast is deflected each to one side of the vehicle and does not hit the underside of the vehicle with full force. Furthermore, there is a multi-layer system with different materials.
  • the US 2006/0048641 A1 shows a kind of wide movable chain assembly with many individual roles below the tub of an armored vehicle.
  • the chain arrangement should protect against projectile-forming mines.
  • the invention is based on the object, a generic military wheeled vehicle such that a high protection against a blast of a blast trap is achieved.
  • a blast trap generates a blast jet emerging from a road surface after its explosion, the blast stream being a mixture of soil material and explosive gases.
  • the US 2014/0123842 A1 relates to a protective device comprising a structure such that it comprises a carrier assembly and a plurality of first and second deflecting elements, wherein the acting blast action (blast) is divided and deflected by opposing surfaces.
  • the protective device represents the actual mine protection arrangement of a vehicle.
  • a blast-beam deflector effectively and inexpensively protects a military wheeled vehicle, particularly from a blast of a blast trap.
  • the blast-beam deflection device increases the protective effect in the context of a retrofit.
  • the weight of the blast beam deflection device can be more than offset by a lighter mine protection arrangement can.
  • the blast beam deflector may also be configured to be mounted to a planned and upcoming job.
  • the blast beam deflector is disposed between the underside of the mine guard assembly and the deck so as to precede the mine protection assembly.
  • the blast beam deflector removes a large portion of the kinetic energy of the blast beam from the bottom of the mine guard assembly.
  • the blast-beam deflection device comprises at least three elongated hollow profile elements.
  • Each hollow profile element has a profile with an outer profile width which is at least 50 mm and a maximum of 400 mm. Between two adjacent hollow profile elements there is a clear element spacing, which is at least 50 mm and a maximum of 300 mm.
  • the clear element spacing has the side effect that, despite the additional protective measure in the area of the drive train, no heat esters can arise. Furthermore, the light Element distance has the side effect that no soil or dirt in the blast jet deflection device can accumulate.
  • the blast beam deflection device is arranged with a clear decoupling distance of at least 20 mm to the underside of the mine protection arrangement. To ensure ground clearance in the terrain, the clear distance to the road surface is at least 300 mm. Practically, a clear decoupling distance of 100mm to 200mm has been proven.
  • the blast stream is deflected by the hollow profile elements to obtain partial beams of the blast beam, of which only a part attenuates attenuated to the underside of the mine protection arrangement. Another part of the partial beams is deflected so that he does not even hit the bottom of the mine protection arrangement.
  • the hollow profile elements of the blast-beam deflection device function as interference contours for the blast jet.
  • the hollow profile elements absorb some of the blast-jet energy by, inter alia, performing a deformation work. Partial beams of the blast beam are also attenuated in the area of the clear element distance, because the particles of the soil material obstruct each other. Part of the kinetic energy is converted into friction work.
  • the blast jet deflection device By the blast jet deflection device, the discharge of the actual, primary mine protection arrangement or mine protection soil is effected.
  • a single row arrangement of the blast jet deflector is sufficient.
  • the hollow profile elements are arranged in the longitudinal direction of the wheeled vehicle. When arranged in the transverse direction there is a higher risk of jamming in the case of a ground obstruction.
  • the hollow profile elements have a length of at least 0.5 m.
  • the minimum length of 0.5 m is appropriate, considered usual widths and lengths of a wheeled vehicle and the underside surface to be protected.
  • the hollow profile elements are neither an exhaust pipe of the engine nor a drive shaft.
  • the blast beam deflection device is rigidly attached to the wheeled vehicle. With a rigid attachment, high forces can be transmitted.
  • the military wheeled vehicle has a passenger compartment, wherein the blast beam deflection device is arranged at least below the passenger compartment in order to provide protection for the vehicle occupants.
  • the hollow profile is filled with a solid or fluid filler, such as water or sand, in order to increase the protective effect.
  • a solid or fluid filler such as water or sand
  • the hollow profile elements have at least a wall thickness of at least 3 mm in order to achieve sufficient strength.
  • the wall thickness can be selected according to the material used.
  • the wall thickness of steel can be between 5mm to 12mm, while in aluminum it can be between 15mm to 20mm.
  • each hollow profile element on a profile with an outer profile width which is at least 60 mm and a maximum of 150 mm.
  • the blast beam deflection device is arranged with a clear decoupling distance of at least 50 mm to the underside of the mine protection arrangement.
  • the values of the aforementioned parameters can be optimized numerically or by blasting experiments with regard to the protective effect.
  • the values of the aforementioned parameters are partly strong, such as the clear distance to the road surface, or sometimes less strong, such as the wall thickness of a hollow profile element, depending on the respective type of vehicle to be protected.
  • a known military wheeled vehicle which has a mine protection arrangement and comprises an underside directed towards a road surface, in addition to a blast-beam deflecting device, which is embedded underneath the vehicle, in order to achieve high protection against a blast-ray of a blast-trap.
  • the mine protection arrangement of the vehicle itself is used to protect against a buried under the pavement explosive trap and is designed accordingly.
  • the explosive trap generates after its explosion a blast jet emerging from the road surface, the blast jet being a mixture of soil material and explosive gases.
  • the additional blast-beam deflection device comprises at least three elongate hollow profile elements. Each hollow profile element has a profile with an outer profile width D, which is at least 20 mm and a maximum of 400 mm. Between two adjacent hollow profile elements there is a clear element spacing a, which is at least 50 mm and a maximum of 300 mm.
  • the blast beam deflection device is arranged between the underside of the mine protection arrangement and the road surface.
  • the hollow profile elements of the blast beam deflection device are arranged with a clear decoupling distance b of at least 20 mm to the underside of the mine protection arrangement.
  • the hollow profile elements are arranged at a clear distance f to the road surface of at least 300 mm.
  • the blast stream is deflected by the hollow profile elements to receive partial beams of the blast beam, of which a part now attenuated impinges on the underside of the mine protection arrangement.
  • the Fig. 1a, Fig. 1b and Fig. 1c show in different views a particular military wheeled vehicle 20.
  • the military wheeled vehicle 20 (FIG. Fig. 1a ) comprises a mine protection arrangement 21.
  • the mine protection arrangement 21 has an underside 22 directed towards the road surface 10.
  • the mine protection arrangement 21 is for protection against a buried under the pavement 10 explosive trap 11 ( Fig. 1c ) educated.
  • the explosive trap 11 generates a blast jet 15 emerging from the road surface after its explosion, the blast jet 15 being a mixture of soil material 17 and explosive gases.
  • the wheeled vehicle 20 additionally has a blast-beam deflection device 30.
  • the blast-beam deflection device 30 (FIG. Fig. 1a ) is disposed between the underside 22 of the mine protection arrangement 21 and the road surface 10.
  • the blast-beam deflection device 30 (FIG. Fig. 1b ) comprises seven elongate hollow profile elements 31.
  • Each hollow profile element 31 ( Fig. 1b ) has a profile 32 with an outer profile width D, which is at least 50 mm and a maximum of 400 mm.
  • each hollow profile element 31 has a profile 32 with an outer profile width D, which is at least 60 mm and a maximum of 150 mm.
  • the hollow profile elements 31 have a wall thickness s of at least 3 mm.
  • the hollow profile elements 31 are arranged with a clear decoupling distance b of at least 20 mm to the bottom 22 of the mine protection arrangement 21.
  • the hollow profile elements 31 with a clear decoupling distance b of at least 50 mm to the bottom 22 of the mine protection arrangement 22.
  • the hollow profile elements 31 are arranged at a clear distance f to the road surface 10 of at least 300 mm. Due to the aforementioned construction of the blast-beam deflection device 30 (FIG. Fig. 1c ) the blasting jet 15 ( Fig.
  • the hollow profile elements 31 are arranged in the longitudinal direction of the wheeled vehicle 20.
  • the hollow profile elements 31 have a length I ( Fig. 1b ) of at least 0.5 m.
  • the hollow profile elements 31 are neither an exhaust pipe of the engine nor a drive shaft.
  • the Fig. 1d gives a three-dimensional impression of the blast beam deflection device 30 again.
  • the elongated hollow profile elements 31 can be connected to each other in a variety of ways. Shown are connecting elements in the form of welded transverse struts 34.
  • the blast beam deflection device 30 is rigidly attached to the military wheeled vehicle 20 (FIG. Fig. 1a ) attached.
  • For attachment to the military wheeled vehicle 20 are welded joints or screw with the aid of spacers (not shown for reasons of simplification) in order to comply with a Entkoppelungsabstand b to the bottom 22 of the anti-mine 21 can.
  • the military wheeled vehicle 20 has a passenger compartment 25.
  • the blast beam deflection device 30 is arranged below the passenger compartment 25 for the protection of the driver.
  • the hollow profile elements 31 may be filled with a solid or fluid filler, such as water or sand.
  • the blast-beam deflection device with the hollow profile elements 31 can be made of steel and / or an aluminum alloy.
  • the hollow profile elements 31 may have in addition to a round and a square profile.
  • Wall thickness for steel should be between 5mm to 12mm, while for aluminum it can be between 15mm to 20mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Elimination Of Static Electricity (AREA)
  • Body Structure For Vehicles (AREA)
  • Radar Systems Or Details Thereof (AREA)

Claims (15)

  1. Dispositif de déviation de souffle d'explosion (30) présentant les caractéristiques suivantes :
    a) le dispositif de déviation de souffle d'explosion (30) comporte au moins trois éléments profilés creux (31) allongés,
    b) chaque élément profilé creux (31) présente un profil (32) présentant une largeur de profil extérieure (D) qui vaut au moins 50 mm et au maximum 400 mm,
    c) entre deux éléments profilés creux (31) adjacents se situe un espacement d'éléments libre (a) qui vaut au moins 50 mm et au maximum 300 mm,
    d) les éléments profilés creux (31) étant disposés en forme de V.
  2. Dispositif de déviation de souffle d'explosion (30) selon la revendication 1, caractérisé en ce que les éléments profilés creux (31) présentent une longueur (1) d'au moins 0,5 m.
  3. Dispositif de déviation de souffle d'explosion (30) selon la revendication 1 ou 2, caractérisé en ce que les éléments profilés creux (31) sont remplis d'une matière de remplissage solide ou fluide.
  4. Dispositif de déviation de souffle d'explosion (30) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les éléments profilés creux (31) présentent une épaisseur de paroi d'au moins 3 mm.
  5. Dispositif de déviation de souffle d'explosion (30) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les épaisseurs de paroi sont comprises entre 5 mm et 12 mm dans le cas de l'acier, tandis qu'elles peuvent valoir entre 15 mm et 20 mm dans le cas de l'aluminium.
  6. Dispositif de déviation de souffle d'explosion (30) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que chaque élément profilé creux (31) présente un profil (32) présentant une largeur de profil extérieure (D) qui vaut entre 50 mm et 400 mm.
  7. Dispositif de déviation de souffle d'explosion (30) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que chaque élément profilé creux (31) présente un profil (32) présentant une largeur de profil extérieure (D) qui vaut entre 60 mm et 150 mm.
  8. Véhicule militaire à roues (20) comprenant un dispositif de déviation de souffle d'explosion (30) selon l'une quelconque des revendications 1 à 7, caractérisé par les caractéristiques suivantes :
    a) le véhicule militaire à roues (20) comporte un ensemble de protection contre les mines (21),
    b) l'ensemble de protection contre les mines (21) comprend un côté inférieur (22) dirigé vers un revêtement de chaussée (10),
    c) le dispositif de déviation de souffle d'explosion (30) est disposé entre le côté inférieur (22) de l'ensemble de protection contre les mines (21) et le revêtement de chaussée (10).
  9. Véhicule militaire à roues (20) selon la revendication 8, caractérisé en ce que l'ensemble de protection contre les mines (21) est conçu pour la protection contre un dispositif piège (11) enfoui en dessous du revêtement de chaussée (10).
  10. Véhicule militaire à roues (20) selon la revendication 8 ou 9, caractérisé en ce que les éléments profilés creux (31) du dispositif de déviation de souffle d'explosion (30) sont disposés dans la direction longitudinale du véhicule militaire à roues (20).
  11. Véhicule militaire à roues (20) selon l'une quelconque des revendications 8 à 10, caractérisé en ce que le dispositif de déviation de souffle d'explosion (30) est fixé rigidement au véhicule militaire à roues (20).
  12. Véhicule militaire à roues (20) selon l'une quelconque des revendications 8 à 11, caractérisé en ce que le véhicule militaire à roues (20) comprend un habitacle (25) et le dispositif de déviation de souffle d'explosion (30) est disposé au moins en dessous de l'habitacle (25).
  13. Véhicule militaire à roues (20) selon l'une quelconque des revendications 8 à 12, caractérisé en ce que les éléments profilés creux (31) sont disposés à une distance libre (f) du revêtement de chaussée (10) d'au moins 300 mm.
  14. Véhicule militaire à roues (20) selon l'une quelconque des revendications 8 à 13, caractérisé en ce que les éléments profilés creux (31) sont disposés à une distance de désaccouplement libre (b) d'au moins 50 mm par rapport au côté inférieur (22) de l'ensemble de protection contre les mines (22).
  15. Véhicule militaire à roues (20) selon l'une quelconque des revendications 8 à 14, caractérisé en ce que les éléments profilés creux (31) sont disposés à une distance de désaccouplement libre (b) d'au moins 20 mm par rapport au côté inférieur (22) de l'ensemble de protection contre les mines (21).
EP15186961.7A 2014-09-26 2015-09-25 Dispositif de déviation de soufle d'explosion et véhicule militaire à roues Active EP3001136B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15186961T PL3001136T3 (pl) 2014-09-26 2015-09-25 Urządzenie odchylające strumień podmuchowy oraz wojskowy pojazd kołowy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014014468.2A DE102014014468A1 (de) 2014-09-26 2014-09-26 Militärisches Radfahrzeug mit einer Minenschutzanordnung

Publications (2)

Publication Number Publication Date
EP3001136A1 EP3001136A1 (fr) 2016-03-30
EP3001136B1 true EP3001136B1 (fr) 2018-12-05

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EP15186961.7A Active EP3001136B1 (fr) 2014-09-26 2015-09-25 Dispositif de déviation de soufle d'explosion et véhicule militaire à roues

Country Status (6)

Country Link
EP (1) EP3001136B1 (fr)
DE (1) DE102014014468A1 (fr)
ES (1) ES2713411T3 (fr)
HU (1) HUE041776T2 (fr)
PL (1) PL3001136T3 (fr)
TR (1) TR201902957T4 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2393350A (en) * 1943-05-21 1946-01-22 George P Wiedman Bullet protection guard
FR2747719A1 (fr) * 1988-06-29 1997-10-24 Francois Conversy Dispositif de protection des abris contre l'impact direct des projectiles conventionnels
DE19635946A1 (de) 1996-09-05 1998-03-12 Krauss Maffei Ag Minenschutz
DE10250132B4 (de) 2002-10-28 2007-10-31 Geke Technologie Gmbh Schutzmodul für gepanzerte Fahrzeuge
US7059236B2 (en) 2004-07-07 2006-06-13 The United States Of America As Represented By The Secretary Of The Army Apparatus and method for ballistic protection of vehicle undercarriages
FR2879731B1 (fr) * 2004-12-21 2010-06-04 Giat Ind Sa Dispositif de protection de plancher de vehicule
IL195090A0 (en) * 2008-11-04 2009-09-22 Gigi Simovich A method and a device for pre-stressed armor
US8146477B2 (en) 2010-05-14 2012-04-03 Force Protection Technologies, Inc. System for protecting a vehicle from a mine
US20140123842A1 (en) * 2012-03-06 2014-05-08 Meggitt (Rockmart) Inc. Blast shield
DE102013008941A1 (de) * 2013-05-25 2014-11-27 Diehl Bgt Defence Gmbh & Co. Kg Anordnung zum Schutz eines Objekts, insbesondere eines Kraftfahrzeugs, gegen anfliegende Projektile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3001136A1 (fr) 2016-03-30
HUE041776T2 (hu) 2019-05-28
PL3001136T3 (pl) 2019-07-31
ES2713411T3 (es) 2019-05-21
TR201902957T4 (tr) 2019-03-21
DE102014014468A1 (de) 2016-03-31

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