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EP1682848A1 - Structure d'un projectile - Google Patents

Structure d'un projectile

Info

Publication number
EP1682848A1
EP1682848A1 EP04797221A EP04797221A EP1682848A1 EP 1682848 A1 EP1682848 A1 EP 1682848A1 EP 04797221 A EP04797221 A EP 04797221A EP 04797221 A EP04797221 A EP 04797221A EP 1682848 A1 EP1682848 A1 EP 1682848A1
Authority
EP
European Patent Office
Prior art keywords
charge
projectile
spacer tube
projectile according
damping
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
Application number
EP04797221A
Other languages
German (de)
English (en)
Other versions
EP1682848B1 (fr
Inventor
Josef Bissig
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.)
Saab Bofors Dynamics Switzerland Ltd
Original Assignee
RUAG Land Systems AG
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 RUAG Land Systems AG filed Critical RUAG Land Systems AG
Priority to EP04797221A priority Critical patent/EP1682848B1/fr
Publication of EP1682848A1 publication Critical patent/EP1682848A1/fr
Application granted granted Critical
Publication of EP1682848B1 publication Critical patent/EP1682848B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
    • F42B12/10—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge
    • F42B12/16—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge in combination with an additional projectile or charge, acting successively on the target
    • F42B12/18—Hollow charges in tandem arrangement

Definitions

  • the present invention relates to a structure of a projectile according to the preamble of claim 1.
  • both the impact shock and the ignition of the pre-charge can prevent the formation of a high-energy beam.
  • the loads mentioned in the claim are mostly shaped charges and thus form a tandem shaped charge.
  • other shaped charges and combinations thereof are also conceivable, such as a front projectile charge and a rear conventional charge (inter alia according to EP -Bl- 0 955 517.
  • Multiple warheads can also be realized according to the same basic principle.
  • the subject of the invention is based on the knowledge that the projectile shell can be thin-walled in the area of its front (first) charge if there are no outer solid structures which deflect the gas impact of the first charge.
  • the spacer tube is also thin-walled and, by continuously increasing its diameter, prevents the impact shock from being passed on directly to the center of the second load.
  • the high internal pressure created at the target causes the spacer tube to burst, the individual fragments fly away in the radial direction without hindering the second load.
  • the second charge has a caliber that is at least a factor of 2 larger than the first charge; the diameter of the spacer tube also increases accordingly.
  • the length of the spacer tube, i.e. the distance between the two charges is at least twice the second caliber.
  • annular flanges also mentioned act as shock barriers and reduce the mechanical load on the ignition systems and the charges.
  • Acceleration measurements on projectiles with tandem hollow charges which have a structure designed according to the features of the patent claim, show relatively small g values (9.81 ms -2 ) at the location of the main charge.
  • the vibrations that particularly disturb the active beam are also minimal. Busy in the case of projectiles fired, this is due to the high drilling capacity of the hollow charge jet achieved in the target.
  • the division of the spacer tube according to claim 2 has manufacturing and kinematic advantages.
  • the embodiment according to claim 3 is very space-saving and ideally takes up the impact pulse for starting the ignition device.
  • shock waves generated by the impact and the ignition of the precharge can be diverted to the casing by a metallic dome; Claim 4.
  • An advantage of claim 5 is an increase in the free path length of the plunger formed by a rear hollow charge.
  • a direct placement of the calotte according to claim 6 reduces the free path length of the ram, but increases the effect deflection of the shock waves.
  • a threaded connection according to claim 8 has proven particularly useful since it absorbs part of the shock wave.
  • the embodiment according to claim 9 increases the shock absorption and reduces the transmission of vibrations to the sensitive second charge.
  • Damping materials and in particular damping rings made of easily deformable material have proven themselves, such as commercially available aluminum foam.
  • a material made of a plastic, which is provided with embedded microballoons is particularly advantageous, as described in CH -A5-674077. See claim 10.- Such materials are commercially available today and are used for detonation wave deflection in shaped charges. Analogous materials based on wood (cellulose) are also known.
  • the material thickenings and discontinuities mentioned in claim 11 lead to speed components in the radial direction when the precharge detonates on the accelerated mass parts (fragments of the flange). This prevents collisions with subsequent parts and with the main charge beam. At the same time, the annular flange serves to dam the charge.
  • FIG. 1 shows a self-propelled projectile with a tandem shaped charge, 1 with a front shock barrier, in an enlarged partial sectional view with further details
  • Fig. 4 shows an alternative embodiment of a further shock barrier
  • Fig. 5 shows the storage of the main charge according to Fig. 1 in the projectile shell in a partial sectional view.
  • the self-propelled projectile with a tandem shaped charge according to FIG. 1 is constructed axially symmetrically to an axis labeled A.
  • a head 1 consists of a tip 2 with inserted elastic rings 3 and, due to its slim shape, has good aerodynamic properties. on.
  • the tip 2 Opposite the actual impact part, the tip 2, there is a first hollow charge, consisting of a lining 4 and a high-performance explosive, the charge 5. Both form a preload and are arranged in a cylindrical region 7a, which is delimited at the rear by a flange ring 10a , An autonomous ignition device 6 is inserted into this flange ring 10a, which projects into part of a spacer tube 7b.
  • the part 7b is connected to a further part 7b 'of the spacer tube via a fit of a joint 7d.
  • the part 7b ' has a flange ring 10b on the front with an open passage 13 which is covered by a support cap 11'.
  • a damping material 9 ' is glued over it. Underneath is a relatively large cavity 8, which is a possible gas blow to the charge 4,5 could take and the kinetic energy in deformation and fracture energy to the spacer tube 7b, 7b '.
  • Another joint 12 connects the spacer tube 7b ', overlapping, with a further cylindrical region 7c of the projectile casing 7a-7c.
  • the main charge 14, 15 with its lining 14 and the explosive 15 is located here.
  • This shaped charge 14, 15 is supported on a rear part 21, which receives another autonomous ignition system 17 in an adapter 16 and from which the drive nozzles 18 are known Solid drive 19 protrude. Hinged wings of a tail unit 20 can be seen at the end.
  • the screwing-in point for the tip 2 is indicated above the cylindrical region of the projectile shell 7a.
  • the lining 4 ends in a threaded connection 41.
  • the explosive 5 lies in a form-fitting manner on the solid flange ring 10a, which is formed in one piece with the part 7a.
  • an ignition amplifier 42 is inserted centrally in a centering pin 44, which in turn receives a damping ring 43, against which the ignition system 6, not shown here, bears.
  • the cylindrical part 7a ends appropriately in the cavity of the spacer tube 7b.
  • FIG. 3 shows the lower shock barrier which projects into the interior of the spacer tube 7b. It can be seen here that the joint 7d has a protruding the ring of the lower part 7b 'fits and the part 7b is supported there. A damping ring 9 is inserted in a likewise solid flange ring 10b and a spherical cap 11 is glued therein.
  • Figure 3 shows symbolically represented by arrows, the front of a shock wave, which is derived from the calotte 9.
  • the plunger J of a shaped charge jet can thus form undisturbed in the interior of the bore 13.
  • FIG. 4 An analogous solution can be seen in FIG. 4: Here the shock wave first hits damping material 9 'and then only on a carrier dome 11' centered in the bore 13. In addition, the damping material 9 'is supported on the edge in a soft damping ring 45.
  • the spacer tube 7b ' is inserted on the inside into the cylindrical shell 7c and forms a joint 12.
  • the lining 14 lies in a form-fitting manner on the shaped load 15 and has a fitting ring 14a at its largest diameter, which is loaded by a damping sleeve 46 and a threaded sleeve 47.
  • the threaded sleeve 47 is screwed into an internal thread 48 of the cylindrical projectile shell 7c.
  • An envelope curve G is drawn in, which characterizes the sensitive area of the shaped charge that is largely free from disturbances.
  • a shell made of a commercially available aluminum alloy has proven itself. This can be easily machined mechanically and shows inherent damping properties, which is particularly positive due to a reduction in the vibrations transmitted to the charge compared to other metallic materials.
  • the joints are shrunk and glued in a manner known per se.
  • the typical march speed of the projectile is below 300 m / s.
  • the caliber of the preload is 32 mm; that of the main charge 112 mm.
  • Ignition system pieo-ignition system
  • a-7c projectile envelope 7c cylindrical areas of the projectile envelope, 7b 'parts spacer tube joint in the projectile envelope
  • Cavity spacer tube 9 'damping ring, damping material0a, 10b flange rings (solid) 1.11'calotte

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Vibration Dampers (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

Pour des projectiles présentant des charges disposées les unes derrière les autres (4,5 ; 14, 15), la séquence prédéterminée dans le temps pour leur amorçage doit être respectée, en vue d'obtenir l'effet prévu dans la cible. La structure de l'enveloppe (7a-7c) du projectile est constituée de telle façon que le tube de distance (7b, 7b') entre les deux charges (4,5 ; 14,15) se fractionne radialement après allumage de la première charge (4, 5), sans nuire à l'efficacité de la charge principale suivante (14, 15), par suite d'ondes de choc et/ou de vibrations. Ce résultat est obtenu, en plus de l'utilisation d'une enveloppe à paroi mince du projectile (7a-7c), grâce à la présence de barrières de choc compactes (10a ; 10b) et d'éléments amortisseurs (9', 11'). L'invention a fait ses preuves, en particulier pour des charges creuses en tandem, ainsi que dans le cas d'utilisations contre des blindages actifs.
EP04797221A 2003-11-11 2004-11-03 Structure d'un projectile Expired - Lifetime EP1682848B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04797221A EP1682848B1 (fr) 2003-11-11 2004-11-03 Structure d'un projectile

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03405805A EP1531316A1 (fr) 2003-11-11 2003-11-11 Structure d'un projectile
PCT/CH2004/000663 WO2005045357A1 (fr) 2003-11-11 2004-11-03 Structure d'un projectile
EP04797221A EP1682848B1 (fr) 2003-11-11 2004-11-03 Structure d'un projectile

Publications (2)

Publication Number Publication Date
EP1682848A1 true EP1682848A1 (fr) 2006-07-26
EP1682848B1 EP1682848B1 (fr) 2009-05-06

Family

ID=34429615

Family Applications (2)

Application Number Title Priority Date Filing Date
EP03405805A Withdrawn EP1531316A1 (fr) 2003-11-11 2003-11-11 Structure d'un projectile
EP04797221A Expired - Lifetime EP1682848B1 (fr) 2003-11-11 2004-11-03 Structure d'un projectile

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP03405805A Withdrawn EP1531316A1 (fr) 2003-11-11 2003-11-11 Structure d'un projectile

Country Status (3)

Country Link
EP (2) EP1531316A1 (fr)
DE (1) DE502004009469D1 (fr)
WO (1) WO2005045357A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7273011B2 (en) * 2004-11-03 2007-09-25 Saab Bofors Dynamics Switzerland Ltd Structure of a projectile
FR2953009A1 (fr) 2009-11-26 2011-05-27 Nexter Munitions Tete militaire a charges en tandem
DE102011103805B4 (de) * 2011-06-01 2017-10-26 Rheinmetall Waffe Munition Gmbh Zündverstärker insbesondere für ein Artilleriegeschoss
EP3120106B1 (fr) * 2014-03-20 2020-10-21 Aerojet Rocketdyne, Inc. Munition légère
DE102018006741B4 (de) * 2018-08-24 2022-06-15 TDW Gesellschaft für verteidigungstecchnische Wirksysteme mbH Tandem-Ladung für einen Flugkörper

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5003883A (en) * 1990-07-23 1991-04-02 The United States Of America As Represented By The Secretary Of The Army Lightweight blast shield
SE9100297L (sv) * 1991-01-31 1992-08-01 Bofors Ab Taendsystem
SE507558C2 (sv) * 1995-01-23 1998-06-22 Bofors Ab Granat med multiladdningar
EP0955517A1 (fr) 1998-05-04 1999-11-10 SM Schweizerische Munitionsunternehmung AG Munition à têtes militaires multiples

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005045357A1 *

Also Published As

Publication number Publication date
WO2005045357A1 (fr) 2005-05-19
DE502004009469D1 (de) 2009-06-18
EP1682848B1 (fr) 2009-05-06
EP1531316A1 (fr) 2005-05-18

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