EP0624774B1 - Sabot pour projectile à stabilisation par ailettes - Google Patents

Sabot pour projectile à stabilisation par ailettes Download PDF

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Publication number
EP0624774B1
EP0624774B1 EP94104252A EP94104252A EP0624774B1 EP 0624774 B1 EP0624774 B1 EP 0624774B1 EP 94104252 A EP94104252 A EP 94104252A EP 94104252 A EP94104252 A EP 94104252A EP 0624774 B1 EP0624774 B1 EP 0624774B1
Authority
EP
European Patent Office
Prior art keywords
sabot
projectile
sub
segments
sealing
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.)
Expired - Lifetime
Application number
EP94104252A
Other languages
German (de)
English (en)
Other versions
EP0624774A1 (fr
Inventor
Rudolf Rossmann
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.)
RWM Schweiz AG
Original Assignee
Oerlikon Contraves Pyrotec 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 Oerlikon Contraves Pyrotec AG filed Critical Oerlikon Contraves Pyrotec AG
Publication of EP0624774A1 publication Critical patent/EP0624774A1/fr
Application granted granted Critical
Publication of EP0624774B1 publication Critical patent/EP0624774B1/fr
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
    • F42B14/067—Sealing aspects in sabots, e.g. sealing between individual segments of the sabots or sealing between the outer surface of the sabot and the inner surface of the barrel

Definitions

  • the invention relates to a droppable sabot a wing-stabilized sub-caliber floor that a gun barrel with swirl grooves can be fired, according to the preamble of claim 1.
  • the sealing strips in the channels of the contact surfaces of the segments and the annular End seals are integral with what is referred to as the sabot body Plastic part formed.
  • the circular, i.e. flat, rear end surface of the sabot is the area exposed to the propellant gases. It has now been shown that the Seal is unsatisfactory, both due to the insufficient effect of the weather strip between the segments not connected to each other as well as the shape is the rear end surface, which does not improve the sealing effect made possible by the propellant gases.
  • a sabot projectile in CH-675 769 A5 a predetermined breaking point on the rear part of the sabot described, the rear part for segmentation Longitudinal slots and one in the area of the outer diameter Has ring containing predetermined breaking points.
  • the propellant is at the rear end of the sabot rear a hemispherical sealing shell of the Sabot coating provided. So that The sabot rear part is not when the projectile is shot down disintegrated into its sectors prematurely, i.e. around the on the Sealing shell to gas pressure acting radially outwards neutralize, interacting support surfaces are on Sabot rear and on the rear face of the Projectile body provided. This is in the genus of present registration not possible.
  • the object of the present invention is now to to improve the seal so that a absolutely reliable gas seal between the gun barrel and Sabot, unaffected by the wear and tear of a Gun barrel during its lifetime.
  • the object is achieved in that the droppable sabot the characteristics in the hallmark of the Claim 1 contains.
  • the sabot jacket is covered with the Sabot body through the inner wall of the gun barrel held together in such a way that a reliable seal between the sub-caliber bullet body or a Arrow projectile body and sabot is guaranteed.
  • old cannon tubes where the inner diameter of the pipe has increased due to wear however, the danger that the segments of the Sabot body move radially outwards and the Segments of the sabot body no longer on Arrowhead body rest so that between sabot and sub-caliber floor gas can escape.
  • FIG. 1 is a sabot 10 on one Lower-caliber floor, in particular an arrow floor 11 attached.
  • the arrow projectile 11 has a tip 12 at the front and behind a thread 13 for attaching one to itself known, not shown stabilizing wing.
  • a second external thread 14 on the central part 15 of the Arrow level 11 available. Since the arrow floor 11 is not The subject of the present invention is here not described in detail.
  • the sabot 10 is composed of a sabot body 16 and a sabot jacket 17 together. On the front The end of the sabot 10 is the arrowhead 12 through a Hood 18 covered.
  • the sabot jacket 17 instructs a peripheral groove 19 at its front end (see also Fig.2), in which a bead 20 protrudes, whereby the hood 18 is attached to the sabot jacket 17.
  • the sabot body 16 has an internal thread 21 and can be on the external thread 14 of the arrow projectile 11th screw on. Furthermore, the sabot body 16 has three longitudinal slots evenly distributed around the circumference or Longitudinal grooves 22, of which in Figures 1, 2, 4 and 5th only a single longitudinal groove 22 is visible in each case.
  • Fig.1 is a longitudinal slot 22 in the sabot body 16 on the right side indicated by a dashed line, where here the material of the sabot jacket 17 den Longitudinal slot 22 fills.
  • Sabot body 16 in three segments 23, 24, 25 divided. 4 shows two segments 23 and 24 and in 1 shows a further segment 25. These three segments 23, 24 and 25 are according to FIGS.
  • predetermined breaking points 26 connected to each other.
  • These predetermined breaking points are 26 according to the invention (see FIG. 1) at the rear end in the region of the Inner diameter of the sabot body 16 arranged to a premature unwanted burst when firing to prevent the pressure of the propellant gases.
  • the three Longitudinal slots 22 are arranged radially and point according to the invention at least in the range of Cartridge case attachment point 49 a T-shaped Cross section with two shoulders 27, see Fig. 1, 4 and 5, the meaning of which will be explained.
  • the Sabot body 16 a number of circumferential grooves.
  • the first circumferential groove 28 is used for attachment a cartridge case on the sabot bullet, or for Anchoring the sabot bullet in one not here shown cartridge case.
  • the remaining four circumferential grooves 29, 30, 31 and 32 are used to attach the Sabot jacket 17 on the sabot body 16. The The meaning of these grooves 29-32 is not closer here explained.
  • the sabot body 16 is preferably made of Made of light metal.
  • the sabot jacket 17 used for the present invention is considered essential surrounds the sabot body 16 almost completely. According to Fig. 1 and 2, only those do not protrude areas interrupted by the three longitudinal grooves 22 Cartridge case attachment point 49 with the circumferential groove 28, which are not used to attach the projectile in the serve cartridge case, as well as three on it adjoining segments of a support ring 50 from the Sabot jacket 17 out.
  • the sabot jacket 17 has a front portion 33, the front Bullet centering is called, as well as a rear Section 34, referred to as rear floor centering is and at the same time serves for swirl transmission and therefore a slightly larger diameter than the front section 33 owns. According to FIG.
  • the sabot jacket 17 three longitudinal slots 48 through which the Sabot jacket 17 also in three segments 35, 36 and 37 is divided. These three segments are 35, 36 and 37 1 and 3 through predetermined breaking points 38 with one another connected. The length of these predetermined breaking points is shown in Fig. 1 evident.
  • the sabot jacket 17 has six Cutouts 39 open, i.e. each of the three segments 35, 36 and 37 has two cutouts 39 (see FIG. 3).
  • the rear one Front side 40 of the sabot body 16 is by a Sealing cap 41 of the sabot jacket 17 except for the three Segments of the support ring 50 covered.
  • This face or End face 40 is partially conical with forward expanding lateral surface, the generatrix of the cone shell preferably by an arc with center in the area of the outside diameter of the Sabot 10 is formed, in other words forms the rear end face 40 one turned outward spherical zone-shaped support for the corresponding cooperatively formed sealing cap 41.
  • the sealing cap 41 has a annular end seal 42 on the three predetermined breaking points 43 evenly distributed around the circumference (see Fig.2) are arranged.
  • a ring-shaped rib protrudes further 44 in a corresponding axial safety groove 45 on rear end of the sabot body 16.
  • the Final seal 42 partially on the thread 14 of the Arrow projectile 11, protrudes beyond this thread and is partially as a cylindrical portion 47 cylindrical surface 46.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Testing Of Engines (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Actuator (AREA)
  • Gasket Seals (AREA)

Claims (5)

  1. Sabot (10) éjectable pour un projectile sous-calibré (11), stabilisé par des ailettes, tiré par un tube de canon muni de rainures, comprenant :
    un corps de sabot (16) dans lequel est accroché le projectile sous-calibré (11), ce corps étant subdivisé en segments (23, 24, 25) et possèdent une zone de fixation de culot (49) ainsi qu'une partie d'extrémité arrière, et
    une enveloppe de sabot (17) subdivisé en segments (35, 36, 37) et entourant au moins en partie le projectile sous-calibré (11) et le corps (16) du sabot en le traversant,
    l'enveloppe (17) ayant un capuchon d'étanchéité (41) faisant corps avec la partie d'extrémité arrière du corps (16) du projectile, et ayant un joint de fermeture (42),
    caractérisé en ce que
    pour assurer la segmentation et l'étanchéité vis-à-vis des gaz,
    le corps (16) du sabot comporte des rainures longitudinales (22) et des zones de rupture de consigne (26), de façon que les zones de rupture de consigne (26) se trouvent dans la zone du diamètre intérieur pour la partie d'extrémité du corps (16),
    les rainures longitudinales (22) ont une section en forme de T dans la plage de la zone de fixation de douille (49), cette section en forme de T comporte deux épaulements (27) constituant des surfaces d'étanchéité supplémentaires pour la matière de l'enveloppe (17) du sabot qui se trouve dans les rainures longitudinales (22), et
    la partie d'extrémité du corps de sabot (16) est en partie réalisée en forme de tronc de cône avec une surface enveloppe s'élargissant vers l'avant.
  2. Sabot (10) selon la revendication 1,
    caractérisé en ce que
    la partie d'extrémité arrière présente une surface (40) en forme de zone de sphère rabattue vers l'extérieur et comporte le capuchon d'étanchéité (41), un anneau de support (50) étant prévu sur le corps (16) du sabot pour assurer l'appui extérieur du capuchon d'étanchéité (41).
  3. Sabot selon la revendication 1 ou 2,
    caractérisé en ce que
    le joint de fermeture (42) comporte une nervure annulaire (44) qui pénètre dans une rainure de fixation (45) dirigée axialement dans le corps (16) du sabot.
  4. Sabot selon la revendication 3,
    caractérisé en ce que
    le joint de fermeture (42) est appliqué en partie contre le filetage (14) du projectile sous-calibré (11) et en partie contre la surface cylindrique lisse (46) du projectile sous-calibré (11), adjacent au filetage (14).
  5. Sabot selon la revendication 4,
    caractérisé en ce que
    la partie du joint de fermeture (42) appliquée contre le filetage (14) est en forme de segment cylindrique (47) dépassant vers l'arrière.
EP94104252A 1993-05-13 1994-03-18 Sabot pour projectile à stabilisation par ailettes Expired - Lifetime EP0624774B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH145393 1993-05-13
CH1453/93 1993-05-13

Publications (2)

Publication Number Publication Date
EP0624774A1 EP0624774A1 (fr) 1994-11-17
EP0624774B1 true EP0624774B1 (fr) 1998-06-10

Family

ID=4210825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94104252A Expired - Lifetime EP0624774B1 (fr) 1993-05-13 1994-03-18 Sabot pour projectile à stabilisation par ailettes

Country Status (7)

Country Link
US (1) US5388523A (fr)
EP (1) EP0624774B1 (fr)
JP (1) JP3429058B2 (fr)
CA (1) CA2121100C (fr)
DE (1) DE59406170D1 (fr)
ES (1) ES2118279T3 (fr)
NO (1) NO302440B1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH691556A5 (de) * 1995-07-19 2001-08-15 Contraves Pyrotec Ag Vorrichtung zur Befestigung einer Patronenhülse an einem Geschoss.
DE19650739C2 (de) * 1996-12-06 1999-12-16 Rheinmetall W & M Gmbh Unterkalibriges Geschoß
ES2152607T3 (es) * 1997-01-27 2001-02-01 Contraves Pyrotec Ag Casquillo propulsor para proyectil subcalibrado.
US6324986B1 (en) 1998-11-06 2001-12-04 Oerlikon Contraves Ag Cartridge-case base for a sub-caliber projectile
ATE205937T1 (de) 1999-02-25 2001-10-15 Contraves Pyrotec Ag Unterkalibergeschoss
US6564720B1 (en) * 2000-01-14 2003-05-20 Olin Corporation Sabot for a bullet
DE102005055504A1 (de) * 2005-11-18 2007-05-24 Rheinmetall Waffe Munition Gmbh Verfahren zur Herstellung eines segmentierten Treibkäfigs
DE102010045474A1 (de) * 2010-09-16 2012-03-22 Rheinmetall Waffe Munition Gmbh Geschoss mit abwerfbarem Treibspiegel
US9188417B2 (en) 2013-08-01 2015-11-17 Raytheon Company Separable sabot for launching payload
US10578382B1 (en) 2018-10-19 2020-03-03 Vitaliy Melnikov Auxiliary caliber weapon system
WO2020217227A2 (fr) 2019-04-26 2020-10-29 University Of Kansas Manœuvre de système de sabot à stabilité aéromécanique
FR3115358B1 (fr) * 2020-10-19 2023-11-24 Nexter Munitions Projectile perforant et explosif dote d'un empennage de stabilisation

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187783A (en) * 1978-03-13 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Discarding sabot munition
CH632086A5 (de) * 1978-08-08 1982-09-15 Oerlikon Buehrle Ag Verfahren zur herstellung eines treibspiegelgeschosses und nach dem verfahren hergestelltes treibspiegelgeschoss.
DE3033041C2 (de) * 1980-09-03 1986-04-10 L'Etat Français représenté par le Délégué Général pour l'Armement, Paris Treibkäfig aus Metall und Kunststoff
US4382411A (en) * 1981-02-02 1983-05-10 The United States Of America As Represented By The Secretary Of The Army Self aligning expansible sabot projectile for worn gun tubes
US4424748A (en) * 1981-08-07 1984-01-10 The United States Of America As Represented By The Secretary Of The Army Segmented seal for discarding sabot ammunition
DE3525854A1 (de) * 1985-07-19 1989-01-05 Mauser Werke Oberndorf Fluegelstabilisiertes pfeilgeschoss
GB2241309B (en) * 1986-02-20 1992-02-05 Royal Ordnance Plc Projectiles and components therefor
US4815682A (en) * 1987-07-20 1989-03-28 Pacific Armatechnica Corporation Fin-stabilized subcaliber projectile and method of spin tuning
ES2032496T3 (es) * 1987-07-20 1993-02-16 Oerlikon-Contraves Ag Proyectil de calibre reducido estabilizado por aletas.
US4901646A (en) * 1987-07-20 1990-02-20 Pacific Armatechnica Corporation Fin-stabilized subcaliber projectile
CH675769A5 (en) * 1988-06-15 1990-10-31 Oerlikon Buehrle Ag Sectored head on detachable sabot - shatters with retainer ring having breakage grooves immediately after release on firing
DE4009220A1 (de) * 1990-03-22 1991-09-26 Rheinmetall Gmbh Abwerfbarer treibkaefig
DE4020404A1 (de) * 1990-06-27 1992-01-09 Rheinmetall Gmbh Segmentierter treibkaefig

Also Published As

Publication number Publication date
EP0624774A1 (fr) 1994-11-17
CA2121100A1 (fr) 1994-11-14
NO941623L (no) 1994-11-14
US5388523A (en) 1995-02-14
JP3429058B2 (ja) 2003-07-22
ES2118279T3 (es) 1998-09-16
DE59406170D1 (de) 1998-07-16
NO941623D0 (no) 1994-05-03
CA2121100C (fr) 1998-02-24
JPH0755400A (ja) 1995-03-03
NO302440B1 (no) 1998-03-02

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