EP2176620A1 - Projectile avec logement de guidage et plaque de propulsion avec ouverture à accélération optimisée - Google Patents

Projectile avec logement de guidage et plaque de propulsion avec ouverture à accélération optimisée

Info

Publication number
EP2176620A1
EP2176620A1 EP08773998A EP08773998A EP2176620A1 EP 2176620 A1 EP2176620 A1 EP 2176620A1 EP 08773998 A EP08773998 A EP 08773998A EP 08773998 A EP08773998 A EP 08773998A EP 2176620 A1 EP2176620 A1 EP 2176620A1
Authority
EP
European Patent Office
Prior art keywords
projectile
guide cage
shaped
drive element
tail
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
EP08773998A
Other languages
German (de)
English (en)
Other versions
EP2176620B1 (fr
Inventor
Thomas Heitmann
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.)
Rheinmetall Waffe Munition GmbH
Original Assignee
Rheinmetall Waffe Munition GmbH
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 Rheinmetall Waffe Munition GmbH filed Critical Rheinmetall Waffe Munition GmbH
Publication of EP2176620A1 publication Critical patent/EP2176620A1/fr
Application granted granted Critical
Publication of EP2176620B1 publication Critical patent/EP2176620B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/064Sabots 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 projectile, in particular a subcaliber arrowhead, with a resistance-stabilizing conical tail having a truncated cone-shaped recess.
  • Subcaliber projectiles in practice have a sabot for pulling the projectile through the weapon barrel and thus for transmitting power from the sabot to the projectile.
  • Such a sabot is known for example from DE 43 30 417 C2. It comprises a segmented, essentially hollow-cylindrical guide cage and a drive element arranged on the rear side on the guide cage.
  • the drive element is formed by a metal plate which has substantially the contour of the frustoconical recess of the tail and has a relatively small through hole to ignite the pressure-initiatable, arranged on the rear side in the projectile tracer set when firing the projectile.
  • a disadvantage of this known sabot are the relatively complex production of the drive element and the high weight (and thus the high Totlastanteil) of this drive element.
  • a subcaliber shotgun is also known with a designed as a full-cone end, which is arranged in a sabot, the rear side contains a massive, disc-shaped metal plate as a driving element.
  • This metal plate is screwed into a segmented, cylindrical guide cage.
  • this known drive element has a high weight and requires for connection to the guide cage a relatively high installation costs.
  • a sabot for a subcaliber rifle projectile which comprises a guide cage and a connected thereto, cup-shaped drive element.
  • the bottom of the drive element has a relatively thick wall thickness and has a through hole, so that the propellant gases can also act directly on the back flat end face of the projectile when launching the corresponding ammunition.
  • the side walls of the driving element extend over more than 20% of the length of the entire spiral projectile.
  • this cup-shaped drive element is relatively expensive to produce and has a high weight.
  • the invention has for its object to provide a way in which the drive element is easy to manufacture and has a lower weight than comparable known sabots.
  • the invention is based essentially on the idea that a driving element is arranged behind the projectile, which is constructively designed such that it pushes the projectile through a weapon barrel or barrel and is not pulled out of the weapon barrel by a sabot as is known ,
  • the drive element is formed only as a transverse to the longitudinal axis of acting only as a cage guide cage-shaped preferably metal plate, which is peripherally mounted in a ringnutenförmigen recess of the inner wall of the guide cage, wherein the disc-shaped metal plate has a central through hole whose diameter is as large as possible is smaller than the maximum diameter of the inner cone of the frustoconical recess of the tail.
  • the inclusion of such a built-pusher plate uses the gas pressure for the acceleration of the projectile in addition to the plate and drives the projectile through the barrel.
  • the guide cage thus only has the function of guiding the subcaliber and can be made lighter than conventional sabots. Especially with practice bullets, this means that lighter practice bullets can be offered.
  • Such, designed as a separate annular disk driving element is easy to manufacture and has a low weight.
  • it can be, in particular when using a plastic guide cage, by encapsulation of its edge, with the material used in the manufacture of the guide cage, connect with this in a simple manner.
  • the largest possible through hole in the annular disk causes the gas pressure forces to act on a much larger area of the conical structure than if they only acted on a closed disc-shaped metal plate.
  • the diameter of the through hole of the disc-shaped metal plate is to be selected such that it is smaller than the maximum diameter of not Slotted frustoconical recess of the tail. This avoids that propellant charge gases can escape laterally through the slot-shaped slots when shooting the sabot projectile.
  • the disc-shaped metal plate has on its side facing the tail of the corresponding projectile a recess for positive reception of the rear end portion of the tail.
  • the disc-shaped metal plate may preferably consist of a light metal, for example an aluminum or a magnesium alloy, but also of steel. It can be used both to accelerate sub-caliber battle shells and to accelerate sub-caliber practice bullets.
  • the disk-shaped metal plate has a tubular rear side for frictional connection with the sleeve cover, the neck is overmolded with the material of the sleeve cover.
  • Figures 1 and 2 are longitudinal sections through two embodiments of inventive sabots with arranged therein projectiles.
  • 1 denotes a projectile, which is, for example, a 120 mm training projectile which can be fired from a tank cannon.
  • the projectile comprises a subcaliber arrowhead 2, for example made of steel, and a cage 7 partially enclosing the arrowhead 2.
  • the arrowhead 2 has on the tail side a conically shaped tail unit (conical structure) 4 with a frustoconical recess 5.
  • a tracer set 6 located in the rear end portion of the arrow level 2, a tracer set 6, which is preferably glued.
  • the cage 7 as a guide cage of the projectile 1 is composed essentially of one consisting of two half-shells (segments), substantially hollow cylindrical, for example, glass fiber reinforced plastic together.
  • the drive element 8 is formed by a transverse to the longitudinal axis 9 of the guide cage 7 (and thus also the arrow level 2) extending disc-shaped metal plate (for example, an aluminum alloy).
  • the drive element 8 is, for example, by insert molding with the material of the guide cage 7, mounted on the edge side in a ring-groove-shaped recess 10 of the guide cage 7.
  • the disk-shaped drive element 8 has a central through-hole 11, whose diameter 12 is as large as possible, but smaller than the maximum diameter 13 of the frusto-conical recess 5 of the tail unit 4.
  • the disc-shaped driving element 8 has on its side facing the tail unit 4 of the arrowhead 2 a recess 14 for the positive reception of the rear end region of the tail unit 4.
  • the propellant gases forming in the corresponding weapon barrel press against the disk-shaped propellant element 8. as on the inner walls of Kegelleitwerkes 4, so that the dart projectile 2 is accelerated both indirectly via the drive element 8 and directly by acting on the inner walls of the tail 4 propellant gases.
  • FIG. 2 shows a further embodiment of a projectile 1 ' with inventive guide cage 7 ' is shown.
  • the same reference numerals have been used for the components which should fulfill the same functions as the components of the embodiment shown in Figure 1.
  • the drive element identified there by the reference numeral 80 has a tubular projection 15 on the rear side on the disk-shaped metal plate 8 ' .
  • an existing plastic or rubber sleeve cover 16 is molded, which is connected in the assembly of the prefabricated sabot projectile 1 ' with the sleeve jacket of a bullet drive member, not shown in a conventional manner.
  • the reference numeral 17 also groove-shaped slots are marked, which are outside the edge of the conical unit 4 'are introduced to generate the flight of the arrow projectile 2 ' a balancing spin. However, these slots 17 do not extend into the frusto-conical recess 5, so that the diameter 12 of the through-hole 11 is not influenced by these slots 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Switches With Compound Operations (AREA)
EP08773998A 2007-08-09 2008-07-16 Projectile avec logement de guidage et plaque de propulsion avec ouverture à accélération optimisée Active EP2176620B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007037738A DE102007037738A1 (de) 2007-08-09 2007-08-09 Geschoss mit einem Führungskäfig und Pusherplatte mit beschleunigungsoptimierter Öffnung
PCT/EP2008/005804 WO2009018905A1 (fr) 2007-08-09 2008-07-16 Projectile avec logement de guidage et plaque de propulsion avec ouverture à accélération optimisée

Publications (2)

Publication Number Publication Date
EP2176620A1 true EP2176620A1 (fr) 2010-04-21
EP2176620B1 EP2176620B1 (fr) 2010-10-13

Family

ID=39971047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08773998A Active EP2176620B1 (fr) 2007-08-09 2008-07-16 Projectile avec logement de guidage et plaque de propulsion avec ouverture à accélération optimisée

Country Status (6)

Country Link
US (1) US8250988B2 (fr)
EP (1) EP2176620B1 (fr)
KR (1) KR101364847B1 (fr)
AT (1) ATE484725T1 (fr)
DE (2) DE102007037738A1 (fr)
WO (1) WO2009018905A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008049147A1 (de) * 2008-09-26 2010-04-01 Rheinmetall Waffe Munition Gmbh Fluggeschoss-Befestigungsbolzen für ein Geschoss mit einem ein Kegelleitwerk aufweisenden unterkalibrigen Penetrator sowie Geschoss
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
US8931416B2 (en) 2013-03-07 2015-01-13 The United States Of America As Represented By The Secretary Of The Navy Inert and pressure-actuated submunitions dispensing projectile
US9410781B1 (en) * 2014-07-28 2016-08-09 The United States Of America As Represented By The Secretary Of The Army Fin-stabilized, muzzle-loaded mortar projectile with sabot
US9488455B1 (en) * 2015-01-22 2016-11-08 Consolidated Nuclear Security, LLC Sabot assembly
US10502515B2 (en) * 2017-01-17 2019-12-10 Raytheon Company Launch piston brake

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL37041A (en) 1971-06-14 1976-02-29 State Of Il Ministry Of Def Forward sabot for sub-calibre projectile with delayed detachment
US3745926A (en) * 1971-06-21 1973-07-17 Us Army Sabot spin-stabilized projectile
US4296687A (en) * 1979-07-16 1981-10-27 The United States Of America As Represented By The Secretary Of The Army Segmented sabot projectile
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
US4709638A (en) * 1981-09-24 1987-12-01 Honeywell Inc. Discarding sabot projectile
SE444984B (sv) 1982-05-28 1986-05-20 Bofors Ab Drivorgan for underkalibrig rotationsstabiliserad projektil
US4459894A (en) * 1982-09-13 1984-07-17 Olin Corporation Mold-in-place 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
DE3635738A1 (de) * 1986-10-21 1988-05-19 Rheinmetall Gmbh Treibkaefig-fluggeschoss-anordnung
US4757766A (en) * 1987-01-28 1988-07-19 Honeywell Inc. Armor-penetrating ammunition assembly with aluminum protective cap
NO163466C (no) * 1987-05-21 1990-05-30 Oerlikon Buehrle Ag Prosjektil med en prosjektilkjerne og en drivspeilmantel.
DE3735481A1 (de) 1987-10-20 1989-05-03 Rheinmetall Gmbh Treibkaefig geringer eigenmasse fuer ein unterkalibriges hochgeschwindigkeits-fluggeschoss
DE3803231A1 (de) * 1988-02-04 1989-08-17 Rheinmetall Gmbh Unterkalibriges treibkaefiggeschoss
FR2642161B1 (fr) 1989-01-26 1991-04-26 France Etat Armement Projectile sous-calibre et procede de montage et fixation d'un corps d'obus dans un projectile sous-calibre
US5635660A (en) * 1989-03-10 1997-06-03 Primex Technologies, Inc. Sabot segment molding apparatus
FR2651570B1 (fr) 1989-09-07 1991-11-22 France Etat Armement Dispositif de liaison pour sabot de projectile sous-calibre.
FR2653873B1 (fr) * 1989-10-26 1992-01-03 France Etat Armement Projectile sous-calibre comportant un noyau, un sabot et une chemise.
FR2665765B1 (fr) 1990-08-13 1994-09-16 Giat Ind Sa Dispositif d'arret en rotation entre un barreau et un sabot.
DE4330417C2 (de) * 1993-09-08 1998-02-26 Rheinmetall Ind Ag Treibkäfig für ein unterkalibriges Geschoß
DE4330418A1 (de) * 1993-09-08 1995-03-09 Rheinmetall Gmbh Unterkalibriges Pfeilgeschoß
EG21731A (en) * 1993-09-24 2002-02-27 Contraves Pyrotec Ag Releasable sabot for a subcaliber projectile
DE102007038486A1 (de) * 2007-08-14 2009-02-19 Rheinmetall Waffe Munition Gmbh Verfahren zur Herstellung eines Geschosses sowie Geschoss
DE102008029395A1 (de) * 2008-06-23 2009-12-24 Rheinmetall Waffe Munition Gmbh Treibkäfiggeschoss
US7934456B1 (en) * 2008-11-20 2011-05-03 Rheinmetall Waffe Munition Gmbh Sabot projectile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009018905A1 *

Also Published As

Publication number Publication date
EP2176620B1 (fr) 2010-10-13
DE502008001551D1 (de) 2010-11-25
WO2009018905A1 (fr) 2009-02-12
US20110197780A1 (en) 2011-08-18
KR20100065320A (ko) 2010-06-16
US8250988B2 (en) 2012-08-28
KR101364847B1 (ko) 2014-02-19
DE102007037738A1 (de) 2009-02-12
ATE484725T1 (de) 2010-10-15

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