EP1475601A1 - Unterkalibergeschoss, Penetrator und Treibspiegel für ein solches Geschoss - Google Patents

Unterkalibergeschoss, Penetrator und Treibspiegel für ein solches Geschoss Download PDF

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Publication number
EP1475601A1
EP1475601A1 EP04291035A EP04291035A EP1475601A1 EP 1475601 A1 EP1475601 A1 EP 1475601A1 EP 04291035 A EP04291035 A EP 04291035A EP 04291035 A EP04291035 A EP 04291035A EP 1475601 A1 EP1475601 A1 EP 1475601A1
Authority
EP
European Patent Office
Prior art keywords
bar
shoe
teeth
projectile
profile
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
EP04291035A
Other languages
English (en)
French (fr)
Other versions
EP1475601B1 (de
Inventor
Nicolas Eches
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.)
Nexter Munitions 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 EP1475601A1 publication Critical patent/EP1475601A1/de
Application granted granted Critical
Publication of EP1475601B1 publication Critical patent/EP1475601B1/de
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
    • 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
    • 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
    • F42B14/062—Sabots for long rod fin stabilised kinetic energy projectiles, i.e. multisegment sabots attached midway on the projectile characterised by contact surfaces between projectile and sabot

Definitions

  • the technical field of the invention is that of projectiles comprising an under-calibrated bar arranged in a shoe with caliber.
  • the shoe is made of a light material for example aluminum and, conventionally, it is formed of several segments (most often three) which surround the bar. The segments are linked together by a belt ensuring gas tightness in the gun barrel and a or two retaining rings, located at the front or rear of the shoe, or on a front guiding surface.
  • the shoe allows the shooting of the bar by the tube of the weapon. It releases the bar at the exit of the tube.
  • the bar and the hoof generally have profiles that cooperate with each other to ensure the axial drive of the bar by the shoe when firing the projectile.
  • These profiles may include a thread helical on the bar which is housed in a thread of the hoof or alternatively by a succession of teeth and grooves ring.
  • Patent FR2666647 describes such a known projectile.
  • the classic training profiles are designed from so as to provide the hoof with a bearing surface allowing it to transmit the longitudinal pushing force to the bar created by the action of powder gases. This profile is therefore mainly sized to resist shear.
  • the three segments of the hoof then work so independent and generally there is at some point only one or two segments to support the bar in bending.
  • the shoe therefore does not help the bar to resist bending.
  • the hoof can itself, by the combined action of its inertia, pressure forces and accelerations transverse, start to open at your pocket before. He therefore less well supports the bar.
  • the object of the invention to propose a projectile allowing to overcome such drawbacks.
  • the invention has also for object the bar and the shoe constituting a such a projectile.
  • the projectile according to the invention comprises means at the level of the driving interface of the bar by the shoe which also provides radial support for the segments hoof.
  • the subject of the invention is an under-calibrated projectile comprising a bar and a shoe formed of several segments, the bar and the shoe with profiles cooperating with each other so as to provide training axial of the bar by the shoe when firing the projectile, projectile characterized in that there is an axial clearance between the profile carried by the hoof and that carried by the bar of so as to allow a limited relative axial displacement of the shoe with respect to the bar, means being provided ensuring radial locking of the shoe segments by the rung in the most advanced position of the hoof relative to at the bar, this locking being no longer ensured in the furthest back position of the hoof relative to the bar.
  • the profiles carried by the hoof and the bar have the shape of teeth separated by grooves, teeth and grooves being annular or formed by a helical thread, a rear face of the teeth carried by the bar having a concave conical profile cooperating during firing with a convex conical profile produced on a front face of the teeth carried by the hoof, these profiles constituting the means ensuring a locking radial of the shoe segments with respect to the bar during the shot.
  • a front face of the teeth carried by the bar has a convex conical profile arranged when firing a concave conical profile from a distance on a rear face of the teeth carried by the hoof, these profiles also coming into contact with each other at the gun barrel exit when the hoof recedes from at the bar, the contact between these profiles making it possible to separate hoof segments from the bar.
  • a front face of the teeth carried by the bar has a concave profile arranged during distance shooting of a convex profile made on one side back of the teeth carried by the hoof, these profiles coming otherwise in contact with each other at the outlet of the tube of the weapon when the hoof recedes from the bar, the shapes of the profiles being chosen so as to spread the hoof segments with the bar with an initial movement segments substantially parallel to the bar.
  • the means of locking include a specific tooth located in front grooves or bar thread, tooth having at level of its rear face a concave conical profile cooperating when firing with a convex conical profile made on a front of a tooth carried by the hoof so as to ensure radial locking of the shoe segments relative to the bar during the shooting.
  • the invention also relates to a bar under calibrated intended to be incorporated into a projectile and characterized in that it has an external profile comprising teeth separated by grooves, teeth and grooves being annular or formed by helical thread, one side back of teeth having a concave conical profile.
  • a front face of the bar teeth may have a Conical convex profile
  • a front face of the bar teeth may have a concave profile.
  • the bar may have an external profile comprising teeth separated by grooves, teeth and grooves being annular or formed by a helical thread, a tooth specific being placed in front of the teeth or grooves of the bar, tooth with a concave conical profile at the level from its back side.
  • the invention also relates to a shoe intended for be incorporated into a projectile, shoe characterized in that it has an internal profile intended to receive a bar and having teeth separated by grooves, teeth and grooves being annular or formed by a thread helical, a front face of the teeth having a conical profile convex.
  • a back side of the hoof teeth may have a concave conical profile
  • a back side of the hoof teeth may have a convex profile.
  • the shoe may have an internal profile intended for receive a bar and having teeth separated by grooves, teeth and grooves being annular or formed by a helical thread, the front face of the tooth arranged on further forward with a convex conical profile.
  • a projectile 1 according to the invention or according to the prior art comprises in a way classic a bar 2 and a shoe 3 formed of several segments.
  • the bar carries a tail unit 4 at its rear part and the different shoe segments are joined together from each other by a belt 5 and a front ring 6.
  • the bar 2 is housed in a bore 7 of the shoe 3.
  • This bore has a profile (not visible in Figure 1) which cooperates with a profile carried by the cylindrical surface external of the bar 2 so as to ensure the axial drive of the bar by the shoe when firing the projectile.
  • the area oval marked Z in Figure 1 is enlarged in the figures 2a to 4c, the zone Z1 is also enlarged in the figures 5a and 5b, these zones make it possible to highlight the differences between the binding profiles for projectiles according to the prior art and for projectiles according to the invention.
  • Figures 2a and 2b show enlarged and in longitudinal section of zone Z for connection profiles according to the prior art.
  • These profiles include a succession of separate teeth by gorges.
  • the hoof teeth are marked D3 and the hoof grooves G3, the bar teeth are marked D2 and the grooves of the G2 bar.
  • the teeth D2, D3 and the grooves G2 and G3 have in section the shape of trapezoids, all symmetrical about a plane 10 perpendicular to the axis of the bar and passing through the middle the top of the tooth or throat in question.
  • each tooth or groove
  • FIG. 2b shows another known training profile, the artillery profile.
  • the teeth and grooves do not are not symmetrical.
  • the D2 teeth of the bar have a rear flank 9 which is strongly inclined relative to direction of bore 7.
  • the known profiles are either constituted by a thread helical on the bar cooperating with a thread on the hoof, either by a succession of teeth and annular grooves.
  • Figures 3a and 3b show an enlarged area Z of Figure 1 for a projectile according to a first mode of realization of the invention.
  • each rear face 11 of the teeth D2 carried by the bar 2 has a concave conical profile which is defined so as to be able to cooperate when firing with a convex conical profile made on each front face 12 of teeth D3 carried by shoe 3.
  • the half angle at the top ⁇ ( Figure 3b) of the surfaces tapered faces 11 and 12 will be chosen in the range of 70 ° to 85 °.
  • the longitudinal clearance J will be chosen taking into account the deviations in the machining tolerances of the teeth (or thread) as well as taking into account dilations maximum thermal potential.
  • Such a provision is intended to allow the separation of the shoe and the bar at the outlet of the tube tear.
  • Each front face 13 of the teeth D2 carried by the bar 2 has a convex conical profile which comes into contact when hoof recoil with a concave conical profile made on each rear face 14 of the teeth D3 carried by the shoe 3.
  • Profile machining will be carried out easily using a tool having a shape corresponding to the shape of the groove to machined.
  • Figures 4a, 4b and 4c show an enlarged view of the zone Z of FIG. 1 for a projectile according to a second embodiment of the invention.
  • teeth D2 and D3 carried by the bar or the shoe have faces 11 and 12 which cooperate to ensure radial locking of the shoe segments by report to the bar when firing the projectile (displacement of the shoe forward with respect to the bar, following the arrow F shown in Figure 4a).
  • each front face 13 of the teeth D2 carried by the bar 2 has a concave profile which is intended to cooperate at the outlet of the tube of the weapon with a convex profile carried by each face rear 14 of teeth D3 carried by shoe 3.
  • these profiles have a shape which is chosen from in order to favor a hoof / rung separation radial spacing of the shoe segments.
  • Figures 5a and 5b show an enlarged area Z1 of figure 1, zone arranged at the level of the front part of a projectile according to a third embodiment of the invention.
  • the teeth D2, D3 and the grooves G2, G3 of the bar and the hoof have an ISO profile classic analogous to that described previously with reference to Figure 2a (but they could also have a profile artillery like those in Figure 2b).
  • the profile can be constituted either by a thread or by a succession annular teeth and grooves.
  • a game J is also provided allowing an axial displacement of the bar 2 relative to the shoe 3.
  • a tooth specific 15 is located in front of the grooves G2 and teeth D2 of the bar 2.
  • This tooth has at its face rear 16 a concave conical profile cooperating during firing with a convex conical profile 17 produced on a front face a tooth 18 carried by the shoe 3.
  • the half angle at the top ⁇ ( Figure 5b) of the surfaces tapered faces 16 and 17 will be chosen in the range of 70 ° to 85 °.
  • Locking is ensured as long as the gas pressure acts on the back of the hoof, i.e. during the whole the path of the projectile in the barrel of the weapon.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Prostheses (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Powder Metallurgy (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP04291035A 2003-05-09 2004-04-21 Unterkalibergeschoss, Penetrator und Treibspiegel für ein solches Geschoss Expired - Lifetime EP1475601B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0305659A FR2854687B1 (fr) 2003-05-09 2003-05-09 Projectile sous-calibre, barreau et sabot constituant un tel projectile
FR0305659 2003-05-09

Publications (2)

Publication Number Publication Date
EP1475601A1 true EP1475601A1 (de) 2004-11-10
EP1475601B1 EP1475601B1 (de) 2008-06-11

Family

ID=32982394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04291035A Expired - Lifetime EP1475601B1 (de) 2003-05-09 2004-04-21 Unterkalibergeschoss, Penetrator und Treibspiegel für ein solches Geschoss

Country Status (5)

Country Link
US (1) US7197984B2 (de)
EP (1) EP1475601B1 (de)
DE (1) DE602004014314D1 (de)
FR (1) FR2854687B1 (de)
IL (1) IL161870A (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1788342A1 (de) * 2005-11-21 2007-05-23 Nederlandse Organisatie voor Toegepast-Natuuurwetenschappelijk Onderzoek TNO Verfahren zur Herstellung eines Mantelpenetrators
US7958829B1 (en) 2006-11-08 2011-06-14 The United States Of America As Represented By The Secretary Of The Army Sabot
US9127908B2 (en) 2009-02-02 2015-09-08 Aero Vironment, Inc. Multimode unmanned aerial vehicle
DE102009009772A1 (de) * 2009-02-20 2010-09-02 Rheinmetall Waffe Munition Gmbh Verfahren zum Einbringen von Sollbruchstellen in ein ringförmiges Halte- und Dichtungsband eines Treibkäfiggeschosses und Laborierwerkzeug zur Durchführung des Verfahrens
DE102009009776A1 (de) * 2009-02-20 2010-08-26 Rheinmetall Waffe Munition Gmbh Patrone
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
CA2789722C (en) 2009-09-09 2018-08-28 Aerovironment, Inc. Systems and devices for remotely operated unmanned aerial vehicle report-suppressing launcher with portable rf transparent launch tube
AU2010325108B2 (en) * 2009-09-09 2016-09-01 Aerovironment, Inc. Elevon control system
US8640625B1 (en) * 2011-08-17 2014-02-04 The United States Of America As Represented By The Secretary Of The Army Kinetic energy training projectile
EP2858898B1 (de) * 2012-06-07 2017-10-18 AeroVironment, Inc. Vorrichtung zur vorübergehenden befestigung eines unbemannten flugkörpers in einem ausstossrohr
US9188417B2 (en) 2013-08-01 2015-11-17 Raytheon Company Separable sabot for launching payload
US10996037B2 (en) * 2018-09-04 2021-05-04 The United States Of America As Represented By The Secretary Of The Army Obturator for robust and uniform discard
US11085745B1 (en) * 2020-02-10 2021-08-10 James Sherwood Pierce, Sr. Two stage projectile for armor piercing
CN113267099B (zh) * 2021-05-12 2023-09-01 中国船舶重工集团公司第七一三研究所 一种偏齿碟形快速水下投放器以及对应发射管

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859922A (en) * 1973-06-28 1975-01-14 Us Army Two piece ammunition round
US4724770A (en) * 1980-06-26 1988-02-16 Rheinmetall Gmbh Subcaliber projectile with pivotally separable drive cage
DE3905907A1 (de) * 1989-02-25 1990-09-06 Diehl Gmbh & Co Drallgeschosskombination

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB149362A (en) * 1918-04-25 1920-08-19 Robert Abbott Hadfield Improvements in or relating to armour piercing projectiles
US3262391A (en) * 1964-10-12 1966-07-26 Budd Co Subcaliber projectile and sabot
US4360954A (en) * 1981-02-17 1982-11-30 The United States Of America As Represented By The Secretary Of The Army Method of making cast-in-place sabots
DE3723909C2 (de) * 1987-07-18 1994-12-08 Rheinmetall Gmbh Penetrator
DE3937665A1 (de) * 1989-11-11 1991-05-16 Rheinmetall Gmbh Geschossanordnung
DE4012154A1 (de) * 1990-04-14 1991-10-17 Rheinmetall Gmbh Unterkalibriges geschoss mit treibkaefig
FR2724450B1 (fr) * 1994-09-13 1997-01-17 Sauvestre Jean Claude Balle de chasse a double penetration et a portee reduite
US5639985A (en) * 1996-09-04 1997-06-17 The United States Of America As Represented By The Secretary Of The Army Groove drag mitigation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859922A (en) * 1973-06-28 1975-01-14 Us Army Two piece ammunition round
US4724770A (en) * 1980-06-26 1988-02-16 Rheinmetall Gmbh Subcaliber projectile with pivotally separable drive cage
DE3905907A1 (de) * 1989-02-25 1990-09-06 Diehl Gmbh & Co Drallgeschosskombination

Also Published As

Publication number Publication date
IL161870A0 (en) 2005-11-20
IL161870A (en) 2008-11-26
US7197984B2 (en) 2007-04-03
FR2854687A1 (fr) 2004-11-12
EP1475601B1 (de) 2008-06-11
US20050011397A1 (en) 2005-01-20
DE602004014314D1 (de) 2008-07-24
FR2854687B1 (fr) 2006-06-16

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