EP0643821B1 - Dispositif de calage pour sous-munition - Google Patents

Dispositif de calage pour sous-munition Download PDF

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Publication number
EP0643821B1
EP0643821B1 EP94905749A EP94905749A EP0643821B1 EP 0643821 B1 EP0643821 B1 EP 0643821B1 EP 94905749 A EP94905749 A EP 94905749A EP 94905749 A EP94905749 A EP 94905749A EP 0643821 B1 EP0643821 B1 EP 0643821B1
Authority
EP
European Patent Office
Prior art keywords
bar
bars
contact
block
envelope
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.)
Expired - Lifetime
Application number
EP94905749A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0643821A1 (fr
Inventor
Dominique Dion
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.)
Giat Industries SA
Original Assignee
Giat Industries SA
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 Giat Industries SA filed Critical Giat Industries SA
Publication of EP0643821A1 publication Critical patent/EP0643821A1/fr
Application granted granted Critical
Publication of EP0643821B1 publication Critical patent/EP0643821B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F42B12/62—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected parallel to the longitudinal axis of the projectile

Definitions

  • the field of the present invention is that of wedging devices for submunitions placed inside the shell of a projectile.
  • projectiles intended to transport submunitions can be of the artillery shell, missile, rocket or mortar projectile type.
  • Such a projectile comprises a pyrotechnic charge which is initiated when it arrives near its objective and which causes the ejection of the submunitions from its envelope.
  • the submunitions can be of the antipersonnel or anti-tank type, when they have a diameter smaller than the internal diameter of the envelope, there is the problem of their radial setting relative to the latter.
  • the projectile must be able to withstand the mechanical stresses which are occasioned by transport, handling and above all shooting, without this resulting in deterioration of the submunitions.
  • the patent US4793260 describes an artillery cargo shell which transports anti-tank bombs. The latter are wedged relative to the envelope by means of inserts. Each insert has concave surfaces which are in contact with two adjacent bombs and it also has a convex surface which is in contact with the internal surface of the shell of the shell.
  • the shell contains several "layers" of bombs stacked axially, and each layer is wedged relative to the envelope by a set of six inserts.
  • Patent DE3732752 taken from the preamble of independent claim 1, also describes a shell transporting bombs, a shell in which the wedging of the bombettes relative to the envelope is obtained by longitudinal shims formed by two symmetrical half shims.
  • the subject of the invention is a device for wedging submunitions inside the envelope of a projectile, a device made up of bars regularly distributed angularly, each bar having a bearing surface intended to come into contact with an internal surface of the envelope and two retaining surfaces intended to come into contact with at least two adjacent submunitions, each bar being divided into at least two half-bars which are in mutual contact at at least one surface contact, device characterized in that the contact surface is inclined so as to form a guide surface which makes it possible, by relative sliding of each half-bar, to separate the two holding surfaces so as to catch up with a radial clearance when mounting submunitions in the envelope.
  • each half-bar is formed by the assembly of at least two identical elementary blocks, each elementary block comprising a bearing surface, a holding surface and a guide surface.
  • each half-bar is formed by the assembly of at least two identical elementary blocks, each elementary block comprising a bearing surface, a holding surface and a guide surface.
  • the elementary blocks constituting a half-strip are assembled by means of pins and holes carried by their end surfaces.
  • the elementary blocks may be identical on the two half-bars.
  • each block may carry a pin arranged at its guide surface.
  • This pin is intended to come into a housing carried by the guide surface of another block, the pins and housings making it possible to assemble the two half-bars, in a relative position such that the distance between the holding surfaces of the bar thus formed is minimal.
  • the bars are preferably made of plastic.
  • a cargo shell 1 transports submunitions, of the anti-tank "bomblet" type 2 arranged inside an envelope 3.
  • the envelope 3 is closed at one end by a warhead 4 and at the other end by a base 5.
  • a rocket 6, of the chronometric type, is intended to initiate a pyrotechnic charge 7 generating gas.
  • the charge 7 is separated from the bombs 2 by a piston 8.
  • the envelope 3 carries at its rear part a belt 26 which makes it possible to ensure scratching when firing inside the barrel of a weapon (not shown).
  • the gas-generating charge 7 is initiated.
  • the gases generated then exert a pressure on the piston 8, which causes the separation of the base 5 and the envelope 3, then the ejection of the bombs 2 from the envelope.
  • the shell carries nine rows of seven bombs.
  • the bombs are fitted into each other at their hollow charge coatings (not shown).
  • the wedging device according to the invention consists of five bars 9 regularly angularly distributed.
  • Each bar 9 has a bearing surface 10 intended to come into contact with an internal surface of the envelope 3.
  • the bars extend substantially over the entire height of the bomb load, that is to say from the base 5 to the piston 8.
  • a metal longitudinal key 24 completes the bars and makes it possible to drive all of the bombettes in rotation by the casing 3.
  • This key extends over substantially the entire height of the bomb load, that is to say from the base 5 to the piston 8. It has an external profile similar to that of a bar and thus comprises a bearing surface with the envelope 3 and holding surfaces in contact with adjacent bombettes.
  • the key has a tenon 25 which is housed in a groove on the casing and allows the bombs to rotate.
  • Each bar is divided into at least two half-bars 9a, 9b which have particular contact surfaces as will be described later.
  • Each half-bar is formed by the longitudinal assembly of blocks 12 which are all identical.
  • Each block 12 here has substantially the length of two bombs.
  • Figures 3a and 3b show an elementary block 12 in two orthogonal views.
  • This block has a slightly convex profile whose radius is equal to the internal radius of the envelope 3. This profile is identified at 10, the juxtaposition of the convex profiles of the different blocks constitutes the bearing surface 10 of the bar.
  • the retaining surface 11 has longitudinal grooves 13 with a triangular profile and which extend over the entire length of the block 12. These grooves are intended to deform during the setting of the bombettes, which ensures good blocking of the bombettes whatever the actual dimensions of the latter within their range of dimensional tolerances.
  • the block 12 also includes end faces 14 and 15 at which the assembly is carried out with other blocks in order to constitute a half bar.
  • the end face 15 carries a stud 16 and the end face 14 has a hole 17.
  • the stud 16 is intended to be housed in a hole 17 carried by a second block, the hole 17 is intended to receive the stud 16 of a third block.
  • the block 12 comprises two lateral faces 18 and 19, mutually parallel and substantially perpendicular to the end faces 14 and 15.
  • the block 12 finally comprises a guide surface 20 which is inclined relative to the axis of the concave surface 11. This inclined surface extends from the end surface 15 to a recess 21.
  • the inclined surface 20 carries a pin 22 and a housing 23, these two elements are intended, as will be explained later, to allow the temporary assembly of two half bars.
  • the block 12 is made of plastic, for example of the Polyamide 6 or polyamide 6-6 type (products sold under the brand "Nylon").
  • the material of the bar will favor the sliding of the blocks at their guide surfaces 20.
  • the block has a thickness of material which is substantially constant over its entire geometry and comprises spacer partitions 27 which ensure its rigidity.
  • Figures 4a and 4b show ten blocks 12 which are arranged so as to allow their assembly to constitute a complete strip.
  • the two half bars 9a and 9b will then be positioned one opposite the other, facing their respective inclined surfaces 20.
  • each half-bar is carried out by means of pins 16 and holes 17.
  • the two half-bars are assembled together using pins 22 and housings 23.
  • each block 12 serves as an abutment surface for the end surfaces 14 of the various blocks, the lateral surfaces 19 of the blocks of each half-bar are then in mutual contact.
  • the assembled bar has a relative axial offset of the half bars 9a and 9b, this offset has the length of that of the lateral surface 19.
  • the width of the bar 9 is shown in L1 it has the value twice the distance between the side surfaces 18 and 19 of each block.
  • This configuration of the bar 9 is that of its "initial state", a state in which it has a minimum width allowing it to be placed in the shell.
  • the inclination of the guide surfaces 20 causes the lateral surfaces 18 and also the retaining surfaces 11 to move apart.
  • This configuration of the bar 9 is that of its "chocking state", a state in which its width is maximum and makes it possible to make up for the radial clearance of assembly of the bombettes.
  • the width of the bar 9 is then represented in L2 and it is a few millimeters greater than the initial value L1.
  • L2 depends on the slope of the guide surface 20, it is possible to give this slope a value enabling the radial clearance of the assembly of the bombettes to be taken up.
  • the wedging device according to the invention makes it possible to considerably simplify the positioning of the bombettes inside the shell.
  • FIG. 6a represents the rear of a cargo shell inside which the bombs 2 and the various bars 9 are placed in their "initial state”.
  • the cargo shell is then placed below a compression tool which comprises a disc intended to come to exert a force on all the projecting parts of the bars 9 (on the rear faces 14 of each bar).
  • the bars therefore all adopt their "setting state" at the same time.
  • FIG. 6b represents the rear of a cargo shell inside which the bombs 2 and the various bars 9 are placed in their "stalling state".
  • an axial wedge washer for loading the shell is positioned, then the closing base.
  • a single compression operation is therefore necessary to ensure the radial wedging of the load instead of six to nine operations for wedging systems according to the state of the art.
  • the device according to the invention has been described in an application for setting bombs in an artillery cargo shell.
  • chock device for any projectile intended to transport submunitions.
  • This device may in particular be used in missiles, rocket or mortar projectile type.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Toys (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Buckles (AREA)
  • Package Frames And Binding Bands (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Catching Or Destruction (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Vehicle Body Suspensions (AREA)
  • Soil Working Implements (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP94905749A 1993-03-08 1994-01-28 Dispositif de calage pour sous-munition Expired - Lifetime EP0643821B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9302614A FR2702557B1 (fr) 1993-03-08 1993-03-08 Dispositif de calage pour sous-munition.
FR9302614 1993-03-08
PCT/FR1994/000104 WO1994020817A1 (fr) 1993-03-08 1994-01-28 Dispositif de calage pour sous-munition

Publications (2)

Publication Number Publication Date
EP0643821A1 EP0643821A1 (fr) 1995-03-22
EP0643821B1 true EP0643821B1 (fr) 1997-12-29

Family

ID=9444720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94905749A Expired - Lifetime EP0643821B1 (fr) 1993-03-08 1994-01-28 Dispositif de calage pour sous-munition

Country Status (10)

Country Link
US (1) US5473988A (es)
EP (1) EP0643821B1 (es)
AT (1) ATE161625T1 (es)
DE (1) DE69407521T2 (es)
ES (1) ES2112519T3 (es)
FI (1) FI945258A (es)
FR (1) FR2702557B1 (es)
IL (1) IL108793A (es)
NO (1) NO303090B1 (es)
WO (1) WO1994020817A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429292C2 (de) * 1994-08-18 1998-04-09 Rheinmetall Ind Ag Drallstabilisiertes Trägergeschoß
US6874425B1 (en) 2001-05-18 2005-04-05 Day & Zimmermann, Inc. Projectile carrying sub-munitions
US6640723B2 (en) * 2002-03-25 2003-11-04 The United States Of America As Represented By The Secretary Of The Navy Mission responsive ordnance
IL172589A (en) * 2005-12-14 2010-11-30 Israel Military Ind Method of converting a cluster bomb into a unitary bomb
RU2645045C1 (ru) * 2016-12-21 2018-02-15 Акционерное общество "Научно-производственное объединение "СПЛАВ" Корпус кассетной головной части реактивного снаряда

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809583A (en) * 1952-12-04 1957-10-15 Roman L Ortynsky Cluster bomb
US3611931A (en) * 1969-05-05 1971-10-12 Murell J Bessey Sequential burst air drop cluster
DE3139473C2 (de) * 1981-10-03 1984-03-01 Diehl GmbH & Co, 8500 Nürnberg Vorrichtung zum Zusammenfassen von zylindrischer Abwurfmunition in Bündeln
IT1167034B (it) * 1983-11-30 1987-05-06 Simmel Spa Dispositivo di allontanamento reciproco delle submunizioni di un proiettile non rotante a submunizioni
DE3629668C1 (de) * 1986-08-30 1988-03-10 Rheinmetall Gmbh Drallstabilisiertes Bomblettraegergeschoss
DE3732744A1 (de) * 1987-09-29 1989-04-06 Rheinmetall Gmbh Bomblettraegergeschoss mit bomblets
DE3732752A1 (de) * 1987-09-29 1989-04-06 Rheinmetall Gmbh Bomblet-traegergeschoss mit bomblets
DE3925390A1 (de) * 1989-08-01 1991-02-14 Rheinmetall Gmbh Bomblettraegergeschoss

Also Published As

Publication number Publication date
US5473988A (en) 1995-12-12
FR2702557B1 (fr) 1995-04-28
DE69407521D1 (de) 1998-02-05
FR2702557A1 (fr) 1994-09-16
EP0643821A1 (fr) 1995-03-22
DE69407521T2 (de) 1998-06-25
NO944235D0 (no) 1994-11-07
WO1994020817A1 (fr) 1994-09-15
ES2112519T3 (es) 1998-04-01
IL108793A (en) 1998-02-08
NO303090B1 (no) 1998-05-25
ATE161625T1 (de) 1998-01-15
FI945258A0 (fi) 1994-11-08
FI945258A (fi) 1994-11-08
NO944235L (no) 1994-11-07

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