EP0086711A1 - Treibkäfig für unterkalibriges Geschoss - Google Patents

Treibkäfig für unterkalibriges Geschoss Download PDF

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Publication number
EP0086711A1
EP0086711A1 EP83400283A EP83400283A EP0086711A1 EP 0086711 A1 EP0086711 A1 EP 0086711A1 EP 83400283 A EP83400283 A EP 83400283A EP 83400283 A EP83400283 A EP 83400283A EP 0086711 A1 EP0086711 A1 EP 0086711A1
Authority
EP
European Patent Office
Prior art keywords
shoe
opening
projectile
elements
arrow
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
EP83400283A
Other languages
English (en)
French (fr)
Other versions
EP0086711B1 (de
Inventor
Pierre-André Moreau
Jean-Claude Sauvestre
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
Direction General pour lArmement DGA
Etat Francais
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 Direction General pour lArmement DGA, Etat Francais filed Critical Direction General pour lArmement DGA
Priority to AT83400283T priority Critical patent/ATE14792T1/de
Publication of EP0086711A1 publication Critical patent/EP0086711A1/de
Application granted granted Critical
Publication of EP0086711B1 publication Critical patent/EP0086711B1/de
Expired 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
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/061—Sabots for long rod fin stabilised kinetic energy projectiles, i.e. multisegment sabots attached midway on the projectile

Definitions

  • the present invention relates to a method and a device allowing the opening of a launching shoe used for firing a sub-calibrated projectile of the arrow type using a striped tube or not.
  • the arrow munitions by their particularly high performances, prove to be remarkably effective in attacking armored targets such as battle tanks. Their performance is the consequence of their very high speed, their relatively large mass conferred by the use of high density materials, and their low impact surface. These various factors make it possible to obtain a very high kinetic energy and a surface energy at impact necessary for the perforation of modern armorings.
  • the precision of the shooting depends essentially on the ballistic qualities of the projectile, and in particular on the conditions in which the launching shoe-arrow separation takes place.
  • Two types of devices are currently used for launching arrow projectiles.
  • the most conventional device consists in the use of a launching shoe made up of several elements enclosing the arrow, held by one or two belts in contact with the barrel of the weapon.
  • the front part of this type of shoe has a flared surface so that the elements of the shoe can move apart under the effect of the aerodynamic forces generated by the resistance of the air at the outlet of the launch tube.
  • the launching shoe opens from front to rear by pressing on the arrow, which can be detrimental to the accuracy of the shooting taking into account that the elements of the shoe may meet the tail of the arrow, per thus turbulating the desired trajectory and inducing shooting dispersions.
  • Another problem stems from the fact that the separation of the elements of the hoof is never done simultaneously which creates a transverse impulse on the arrow and affects the accuracy of the shot.
  • French patent 2,445,509 eliminates part of the problems encountered previously.
  • it is a pusher shoe made of high-strength alloy.
  • mechanical, equipped with a belt for sealing against the propulsion gases of the barrel the central part of the face adjacent to the projectile is provided with a steel disc in contact with the tail of the projectile and the periphery of which comprises yokes in which a set of radially deployable jaws is articulated.
  • These jaws consist of rigid blades and are on the one hand in abutment with the launching tube and on the other hand maintain the body of the boom axially. There is also provision for locking these blades for part of the tail of the boom.
  • a major drawback of this type of mechanism lies in its complexity making it difficult to manufacture in large series and inducing high cost prices.
  • the presence of yokes, joints and moving parts is hardly compatible with the precision required, especially given the very significant accelerations implemented during the interior ballistics phase.
  • the aim of the present invention is a method and a launching device having the advantages of conventional launching shoes, but making it possible to obtain very low shooting dispersions, by avoiding on the one hand the support of the elements of the shoe on the deflection during the separation phase and on the other hand the possible shocks of these same elements with the tail, ensuring the simultaneity of the separation of the elements with the sub-projectile and making it possible to use the principle of launching "pushed" or "towed pushed".
  • the present invention therefore consists of a launch shoe opening method characterized in that the opening is carried out in two main stages: a first consisting in the opening of the rear part of the shoe by spacing the elements of the shoe then that the front part is always locked and a second step consisting in opening the front part after total unlocking of the elements.
  • the opening of the rear part of the hoof is accompanied by the separation of the arrow from the front part of the hoof.
  • the projectile launch shoe according to the invention and used for implementing the method consists of a tubular part enclosing the arrow, a first so-called thrust plate located in the rear vicinity of the tubular part and subjected to the pressure of the propellant gases and of a second so-called guide plate located in the front vicinity of the tubular part, it comprises connecting means between the elements, these means being arranged, on the one hand on the front part of the shoe and on the other hand on the rear part, the connecting means of the rear part being broken before the connecting means of the front part so that the shoe opens from the rear towards the front.
  • the front connection means of the shoe are broken under the effect of the opening of the rear part of the shoe.
  • the connecting means of the rear part are constituted by a belt enclosing the thrust plate.
  • the connecting means of the front part of the shoe consist of a ring arranged on the guide plate.
  • the points of rotation of the elements are located at the front of the front end of the tubular part enclosing the arrow and at the front of the ring constituting the locking means of the front part of the shoe.
  • the front ring has breaking initiators arranged opposite the interfaces of the elements of the shoe.
  • FIG 1 shows a thin line, the arrow 1 provided with its tail stabilizer 2 at the exit of the launch tube 3.
  • the sabot 4 comprises three elements 4a, 4b and 4c in the contact with the arrow by the through a thread 5 allowing the transmission of propulsion forces.
  • the shoe 4 is composed on the one hand of a thrust plate 6 subjected to the pressure of the propellant gases and, on the other hand of a guide plate 7 used for guiding the projectile in the launching tube.
  • the plates 6 and 7 are secured by means of a tubular part 8 extending behind the push plate 6 by the part 8a and at the level of the guide plate by the part 8b.
  • the seal between the launch tube and the shoe itself is produced by a sealing belt 9 arranged in a circular groove 10 produced on the thrust plate.
  • this belt also has the function of ensuring cohesion and rear locking of the elements of the shoe.
  • a ring 11 is placed in a circular groove 12 formed inside the guide plate 7; it ensures the maintenance and cohesion of the front part of the hoof elements.
  • a clearance 13 has been machined concentrically with the connecting thread 5. This clearance 13 provides a clearance between the projectile and the launch pad, clearance whose function will be explained later.
  • the method of opening the shoe of this projectile is as follows.
  • the propellant gases represented by the arrows 14 exert pressure on the rear part of the elements of the shoe.
  • This pressure has the effect of requesting the rear opening of the elements of the shoe, while the front part of the latter is always locked by the ring 11.
  • the sealing belt 9 is broken and allows the opening from the rear.
  • the centrifugal forces combine with the effects of the pressure of the propellant gases to request the opening of the shoe from the rear and to break the locking achieved by the belt 9.
  • the points of rotation 16 are located in front of the front end of the tubular part 8b. This separation is also favored by the presence of the clearance 13 machined inside the tubular part 8b.
  • Figure 4 we see the separation 17 of the shoe and the arrow during the rear opening phase of the shoe.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Toys (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Saccharide Compounds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Shovels (AREA)
EP83400283A 1982-02-16 1983-02-10 Treibkäfig für unterkalibriges Geschoss Expired EP0086711B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83400283T ATE14792T1 (de) 1982-02-16 1983-02-10 Treibkaefig fuer unterkalibriges geschoss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8202470A FR2521717B1 (fr) 1982-02-16 1982-02-16 Projectile a energie cinetique et procede de lancement de celui-ci
FR8202470 1982-02-16

Publications (2)

Publication Number Publication Date
EP0086711A1 true EP0086711A1 (de) 1983-08-24
EP0086711B1 EP0086711B1 (de) 1985-08-07

Family

ID=9271010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400283A Expired EP0086711B1 (de) 1982-02-16 1983-02-10 Treibkäfig für unterkalibriges Geschoss

Country Status (6)

Country Link
EP (1) EP0086711B1 (de)
AT (1) ATE14792T1 (de)
DE (1) DE3360493D1 (de)
ES (1) ES8309003A1 (de)
FR (1) FR2521717B1 (de)
NO (1) NO152063C (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608927A (en) * 1983-04-23 1986-09-02 Rudolf Romer Segmented sabot
EP0389845A1 (de) * 1989-03-25 1990-10-03 DIEHL GMBH & CO. Treibtopf für drallstabilisierte Unterkalibergeschosse
FR2665764A1 (fr) * 1990-08-13 1992-02-14 Giat Ind Sa Projectile comportant un sabot constitue de plusieurs elements.
GB2264552A (en) * 1992-02-28 1993-09-01 Rheinmetall Gmbh Discarding sabot
FR2708730A1 (fr) * 1993-08-06 1995-02-10 Sauvestre Jean Claude Lanceur à séparation contrôlée d'éléments pour munitions.
EP0990869A1 (de) * 1998-10-01 2000-04-05 Giat Industries Sabot für ein Unterkalibergeschoss
USH1999H1 (en) * 1999-03-03 2001-11-06 The United States Of America As Represented By The Secretary Of The Army Tuning saboted projectile performance through bourrelet modification
EP1333242A1 (de) * 2002-02-04 2003-08-06 Giat Industries Treibkäfig für Pfeilgeschosse

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2844589B1 (fr) 2002-09-16 2006-05-19 Giat Ind Sa Projectile sous calibre a piece de guidage rapportee
FR2906360B1 (fr) 2006-09-22 2010-11-12 Giat Ind Sa Projectile sous calibre comportant un sabot asymetrique.
FR2948185A1 (fr) 2009-07-20 2011-01-21 Nexter Munitions Dispositif de liaison par concordance de forme entre un sabot et un barreau d'un projectile
FR2987891B1 (fr) 2012-03-06 2014-09-26 Nexter Munitions Projectile sous calibre a structure de tete amenagee
FR3039266B1 (fr) 2015-07-22 2017-09-01 Cime Bocuze Penetrateur comportant un coeur entoure d'une gaine ductile et procede de fabrication d'un tel penetrateur
FR3110687B1 (fr) 2020-05-20 2022-05-27 Nexter Munitions Projectile sous calibré et procédé de neutralisation d'un objectif en mettant en oeuvre un tel projectile.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996010A (en) * 1944-06-30 1961-08-15 Rudolph O Frantik Projectile
US3905299A (en) * 1972-08-08 1975-09-16 Pacific Technica Corp Discarding sabot projectiles
US4187783A (en) * 1978-03-13 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Discarding sabot munition

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996010A (en) * 1944-06-30 1961-08-15 Rudolph O Frantik Projectile
US3905299A (en) * 1972-08-08 1975-09-16 Pacific Technica Corp Discarding sabot projectiles
US4187783A (en) * 1978-03-13 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Discarding sabot munition

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608927A (en) * 1983-04-23 1986-09-02 Rudolf Romer Segmented sabot
EP0389845A1 (de) * 1989-03-25 1990-10-03 DIEHL GMBH & CO. Treibtopf für drallstabilisierte Unterkalibergeschosse
FR2665764A1 (fr) * 1990-08-13 1992-02-14 Giat Ind Sa Projectile comportant un sabot constitue de plusieurs elements.
GB2264552A (en) * 1992-02-28 1993-09-01 Rheinmetall Gmbh Discarding sabot
US5289777A (en) * 1992-02-28 1994-03-01 Rheinmetall Gmbh Subcaliber kinetic energy projectile
GB2264552B (en) * 1992-02-28 1996-02-28 Rheinmetall Gmbh Sub-calibre projectile
WO1995004913A1 (fr) * 1993-08-06 1995-02-16 Sauvestre Jean Claude Sabot a separation controlee des segments pour projectiles sous calibres
FR2708730A1 (fr) * 1993-08-06 1995-02-10 Sauvestre Jean Claude Lanceur à séparation contrôlée d'éléments pour munitions.
US5589658A (en) * 1993-08-06 1996-12-31 Sauvestre; Jean-Claude Sabot with controlled separation of the elements for subcaliber projectiles
EP0990869A1 (de) * 1998-10-01 2000-04-05 Giat Industries Sabot für ein Unterkalibergeschoss
FR2784177A1 (fr) * 1998-10-01 2000-04-07 Giat Ind Sa Sabot pour projectile sous calibre
USH1999H1 (en) * 1999-03-03 2001-11-06 The United States Of America As Represented By The Secretary Of The Army Tuning saboted projectile performance through bourrelet modification
EP1333242A1 (de) * 2002-02-04 2003-08-06 Giat Industries Treibkäfig für Pfeilgeschosse
FR2835602A1 (fr) * 2002-02-04 2003-08-08 Giat Ind Sa Sabot pour munition fleche
US6805058B2 (en) 2002-02-04 2004-10-19 Giat Industries Sabot for fin-stabilized ammunition

Also Published As

Publication number Publication date
ES519048A0 (es) 1983-11-01
NO152063B (no) 1985-04-15
FR2521717A1 (fr) 1983-08-19
ES8309003A1 (es) 1983-11-01
NO830505L (no) 1983-08-17
EP0086711B1 (de) 1985-08-07
DE3360493D1 (en) 1985-09-12
ATE14792T1 (de) 1985-08-15
FR2521717B1 (fr) 1986-11-21
NO152063C (no) 1985-07-24

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