EP0594694A1 - Projectile sous-calibre avec sabot. - Google Patents

Projectile sous-calibre avec sabot.

Info

Publication number
EP0594694A1
EP0594694A1 EP92914917A EP92914917A EP0594694A1 EP 0594694 A1 EP0594694 A1 EP 0594694A1 EP 92914917 A EP92914917 A EP 92914917A EP 92914917 A EP92914917 A EP 92914917A EP 0594694 A1 EP0594694 A1 EP 0594694A1
Authority
EP
European Patent Office
Prior art keywords
sub
segments
pressure piece
cage
parts
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
EP92914917A
Other languages
German (de)
English (en)
Other versions
EP0594694B1 (fr
Inventor
Elmar Bilgeri
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.)
Steyr Daimler Puch AG
Original Assignee
Steyr Daimler Puch 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 Steyr Daimler Puch AG filed Critical Steyr Daimler Puch AG
Publication of EP0594694A1 publication Critical patent/EP0594694A1/fr
Application granted granted Critical
Publication of EP0594694B1 publication Critical patent/EP0594694B1/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
    • 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
    • F42B14/064—Sabots enclosing the rear end of a kinetic energy projectile, i.e. having a closed disk shaped obturator base and petals extending forward from said base

Definitions

  • the invention relates to a sub-caliber projectile with a projectile core, at the rear end of which a driving part engages and with a detachable cage.
  • a generic projectile is known from 'DE-C 27 18 557 ' .
  • the sabot or sabot consists of a block on which the gas forces act and in front of which a bearing plate is arranged which holds both the projectile and segments of a cage.
  • the latter are designed so that they are thrown off by the spin-induced centrifugal force after leaving the barrel. However, they can only be torn off by the air forces acting on conical surfaces on the front of the segments.
  • the disadvantage here is that the block and bearing plate are too short and by the centering only against lateral displacements - which cannot occur in the barrel anyway - are secured, so that these parts can twist under the effect of the gas pressure and this movement communicates itself to the projectile. It is also disadvantageous that the segments of the sabot are held together with the projectile. This also causes a reaction on the floor when the segments are detached, which reduces the accuracy of the hit. Another disadvantage is the complex construction of the driving part and, above all, of the segments. In the case of a wing-stabilized projectile, there would also be a risk of damage to the wings when the segments were detached.
  • the drive part consists of a pressure plate with a rearwardly projecting centering mandrel and a pressure piece into which the centering mandrel protrudes, the foot part or foot parts of the drive cage being clamped between the pressure sheet and the pressure piece (claim 1).
  • the long centering mandrel of the pressure plate which projects deep into the pressure piece, creates a firm connection between these two parts, which makes tilting impossible. In addition, it contributes to the optimal transmission and distribution of the gas forces from the pressure piece to the pressure plate, which only acts with its central part on the rear of the projectile.
  • an optimal material for guiding and sealing can be used for the pressure piece and for the extremely high-stressed printing plate, an optimal material can be selected. All in all, this gives us parts that are easy to manufacture and clamp together, and low production costs.
  • the centering mandrel advantageously has circumferential grooves with a barb-like cross section (claim 2). These ensure a firm connection between the pressure plate and the pressure piece, into which the mandrel can be pressed, as a result of which the foot parts of the segments of the sabot are firmly held.
  • the projectile core consists of a heavy metal and the pressure plate is made of steel or titanium and the pressure plate has a conical seat for the end of the projectile (claim 3).
  • the formation of the projectile from a heavy metal ensures the large cross-sectional load during flight, through which the projectile experiences less braking or deceleration of the flight speed.
  • it also leads to particularly high inertial forces acting on the pressure plate. Therefore, it is also made of a particularly hard material and has a conical seat for the end of the floor, whereby the contact surface is increased without increasing the cross section of the floor.
  • the pressure piece is made of plastic and the foot parts of the sabot have a cylindrical end part which is inserted into a cylindrical groove of the pressure piece (claim 4).
  • This embodiment is particularly cost-effective and creates a tight seal. of the pressure piece with a driving cup.
  • the cylindrical groove allows a good fastening of the foot parts despite the relatively low strength of the plastic and allows the pressure piece to be sprayed with a simple shape.
  • the pressure piece consists of a plurality of disks joined to form a compact cylinder, and the inward-projecting foot parts of the sabot segments run in a plane normal to the axis and are held in place by a toothed disk (claim 5).
  • the pressure piece is suitable for receiving particularly high pressures, and nevertheless the desired sealing properties can be imparted to it by the construction of disks. As a result, it is also sufficient to secure the foot parts against pulling out in the radial direction by means of a toothed plate.
  • the sabot consists of individual segments and the foot parts connect to the segments via predetermined breaking points at the height of the pressure plate (claim 6). Due to the good clamping of the foot parts between the pressure piece and the pressure plate, the individual segments no longer need to be connected to one another. The predetermined breaking points between the segments and their foot parts at the height of the pressure plate ensure that these segments of the sabot also do not damage the stabilizing wings when torn off.
  • a mounting ring is arranged between the foot parts of the segments and the pressure piece (claim 7).
  • This assembly ring is a significant relief when assembled in the case of segments of the sabot cage which are not connected to one another the second embodiment variant, the toothed disc at the same time.
  • Fig. 1 Projectile according to the invention in a first embodiment in longitudinal section
  • Fig.3 Projectile according to the invention during the detachment of the cage.
  • the core of an arrow projectile is denoted by 1 and has a tip 2, a recess 3 for positioning, a cylindrical part 4 for receiving stabilizing wings 5 and a conical rear part 6. But it could also be a spin-stabilized projectile or a projectile without a stabilizing wing.
  • the projectile 1 is surrounded by a cage 10, which can consist of a suitable plastic and which consists of segments 11, which may or may not be connected to one another and may have openings 12 or other shaped elements which are not essential to the invention.
  • the segments 11 pass over webs 13 forming predetermined breaking points into foot parts 14 which are fastened between a pressure plate 15 made of high-strength steel or titanium and a pressure piece 18 in a manner to be described.
  • the pressure plate 15 has a conical receptacle 19 at the front for a conical rear part 6 of the projectile and at the rear one Centering mandrel 16 with circumferential grooves 17 of barb-like profile.
  • the pressure plate 15 is surrounded on its outer circumference by the walls of the segments 11, which are very thin at this point in the present exemplary embodiments in order to create space for the stabilizing wings 5.
  • designs without such are also conceivable.
  • the front parts of the segments 11 protrude beyond the projectile tip 2 and close it together.
  • the individual segments 11 there have guide surfaces 40, 41 and a cylindrical wall 44, the design of which considerably improves the opening of the segments 11 after leaving the barrel.
  • the pressure piece 18 is made of a suitable plastic and consists of a peripheral wall 21 which forms a drive cup 22 in its lower part.
  • a cylindrical groove 23 runs in its upper part and serves to fasten the foot parts 14 of the segments 11.
  • these are individual segments 11, but all of them could also be a part connected to predetermined breaking points.
  • the segments 11 merge via the web 13 into a radially directed flange part 25, which is adjoined by a collar part 24 which is inserted into the cylindrical groove 23.
  • the peripheral wall 21 is shortened at the top to create space for the flange parts and for a mounting ring 26.
  • the centering mandrel 16 of the pressure plate 15 is pressed into a central part 27, as a result of which the foot parts 14 are held firmly between the pressure piece 18 and the pressure plate 15.
  • the centering mandrel 16 has circumferential grooves 17 with a barb-like profile, which facilitate pressing the mandrel into a bore in the central cable 27, but prevent it from being pulled out.
  • the plastic from which the pressure piece 18 is made is selected so that there is a slight expansion of the peripheral wall 21 and thus an improved seal with respect to the barrel under the gas pressure acting on the driving cup and that it also has good sliding behavior.
  • the mounting ring 26 facilitates the assembly of the projectile if it consists of individual segments: the individual segments 11 are placed around the projectile 1 with the pressure plate 15 attached, and the assembly ring is then pushed over it. As a result, the individual segments 11 are connected to one another until the pressure piece 18 is pressed onto the centering mandrel 16 and the foot parts 14 are then held in this way.
  • the pressure piece 18 consists of individual disks 31 of a suitable plastic, which are firmly connected to one another by ultrasound or friction welding and thus form a compact block which again has the desired sealing, sliding and Has strength properties.
  • the mandrel 16 of the pressure plate 15 is also pressed into this.
  • the foot parts 14 of the segments 11 are only flange parts 32, to which a ring 33 with claws 34 is then connected again. This ring is sufficient in this embodiment to hold the flange parts 32 and also acts as a mounting ring in the manner described above.
  • FIG. 3 shows the disintegrating cage for both embodiments according to the invention after leaving the barrel.
  • the segments are pressed apart under the action of the air flow 35. It can be seen that all (in this case) four segments are folded away from the projectile axis by the same angle at which the predetermined breaking points 13 are therefore the same. break early. Due to the braking effect, the speed of the segments with the propelling parts is decelerated so much before the breaking points act that the propelling parts remain with the segments without touching the projectile in any way.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

Un projectile sous-calibré du type à sabot (pusher plate) avec des segments de coiffe largables (11) dispose d'une plaque de pression (15) avec un mandrin de centrage faisant saillie vers l'arrière (16) inséré dans un élément de pression (18). Entre la plaque de pression (15) et l'élément de pression (18) sont serrés des éléments de fond (24, 25) des segments (11), ce qui permet d'obtenir une transmission de forces de pression de gaz très élevées et le détachement des segments sans répercussions défavorables sur la précision au but du projectile.
EP92914917A 1991-07-17 1992-07-15 Projectile sous-calibre avec sabot Expired - Lifetime EP0594694B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0143591A AT399582B (de) 1991-07-17 1991-07-17 Unterkalibriges geschoss mit treibspiegel
AT1435/91 1991-07-17
PCT/AT1992/000097 WO1993002333A1 (fr) 1991-07-17 1992-07-15 Projectile sous-calibre avec sabot

Publications (2)

Publication Number Publication Date
EP0594694A1 true EP0594694A1 (fr) 1994-05-04
EP0594694B1 EP0594694B1 (fr) 1995-04-05

Family

ID=3513843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92914917A Expired - Lifetime EP0594694B1 (fr) 1991-07-17 1992-07-15 Projectile sous-calibre avec sabot

Country Status (5)

Country Link
US (1) US5392714A (fr)
EP (1) EP0594694B1 (fr)
AT (1) AT399582B (fr)
DE (1) DE59201851D1 (fr)
WO (1) WO1993002333A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6947496B2 (en) 2000-10-30 2005-09-20 Angel Ezquerra-Moreu Method for refining a DC-offset estimate and removing the DC-offset

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330417C2 (de) * 1993-09-08 1998-02-26 Rheinmetall Ind Ag Treibkäfig für ein unterkalibriges Geschoß
DE19643829A1 (de) * 1996-10-30 1998-05-07 Wegmann & Co Gmbh Abschußvorrichtung für selbstangetriebene Flugkörper, insbesondere Artillerieraketen
DE10339912B4 (de) 2003-08-29 2016-07-21 Ivoclar Vivadent Ag Dentale Beschichtungsmaterialien, deren Verwendung sowie Verfahren zur Beschichtung einer Substratoberfläche
US20070234925A1 (en) * 2004-09-07 2007-10-11 Dunn Robert H Sabot allowing .17-caliber projectile use in a .22-caliber weapon
US7549376B1 (en) * 2005-07-15 2009-06-23 The United States Of America As Represented By The Secretary Of The Army Non-lethal projectile carrier
FR2954485B1 (fr) 2009-12-21 2012-05-11 Nexter Munitions Dispositif de lancement pour projectile d'artillerie sous calibre.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE704406C (de) * 1937-01-20 1941-03-29 Waffen Und Munitionsfabriken A Unterkalibergeschoss
US2306140A (en) * 1940-09-27 1942-12-22 George E Dieckman Projectile and bullet
US2998778A (en) * 1945-08-02 1961-09-05 Charles E Hablutzel Sabot retainer
FR2597590B1 (fr) * 1976-04-29 1988-08-26 Saint Louis Inst Sabot de lancement pour projectiles sous-calibres
DE2738121A1 (de) * 1977-08-24 1979-03-01 Rheinmetall Gmbh Gewehrpatrone mit einem das unterkalibergeschoss umschliependen kunststoffmantel
FR2445509A1 (fr) * 1978-12-28 1980-07-25 Thomson Brandt Mecanisme de lancement d'un projectile sous-calibre
DE3131540C2 (de) * 1981-08-08 1986-02-13 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Treibspiegelgeschoß
US4709638A (en) * 1981-09-24 1987-12-01 Honeywell Inc. Discarding sabot projectile
US4590862A (en) * 1983-05-23 1986-05-27 The United States Of America As Represented By The Secretary Of The Army Projectile pusher-type discarding sabot
FR2653873B1 (fr) * 1989-10-26 1992-01-03 France Etat Armement Projectile sous-calibre comportant un noyau, un sabot et une chemise.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9302333A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6947496B2 (en) 2000-10-30 2005-09-20 Angel Ezquerra-Moreu Method for refining a DC-offset estimate and removing the DC-offset

Also Published As

Publication number Publication date
WO1993002333A1 (fr) 1993-02-04
EP0594694B1 (fr) 1995-04-05
DE59201851D1 (de) 1995-05-11
US5392714A (en) 1995-02-28
ATA143591A (de) 1994-10-15
AT399582B (de) 1995-06-26

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