EP0580511A1 - Dichtungsband für Pfeilgeschoss - Google Patents

Dichtungsband für Pfeilgeschoss Download PDF

Info

Publication number
EP0580511A1
EP0580511A1 EP93401895A EP93401895A EP0580511A1 EP 0580511 A1 EP0580511 A1 EP 0580511A1 EP 93401895 A EP93401895 A EP 93401895A EP 93401895 A EP93401895 A EP 93401895A EP 0580511 A1 EP0580511 A1 EP 0580511A1
Authority
EP
European Patent Office
Prior art keywords
sealing belt
projectile
housing
belt
belt according
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
EP93401895A
Other languages
English (en)
French (fr)
Other versions
EP0580511B1 (de
Inventor
Marc Berville
Laurent Queille
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
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 EP0580511A1 publication Critical patent/EP0580511A1/de
Application granted granted Critical
Publication of EP0580511B1 publication Critical patent/EP0580511B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F42B14/02—Driving bands; Rotating bands
    • 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 field of the present invention is that of sealing belts for arrow projectiles.
  • An arrow projectile is composed in a known manner of an under-calibrated penetrator secured to a caliber shoe.
  • the sabot is made up of several segments (generally three) which separate and release the indenter at the exit of the barrel of the weapon under the action of aerodynamic forces.
  • this separation must be as symmetrical as possible so as not to disturb the indenter, which could affect the accuracy of the shot.
  • the belt must therefore seal the propellant gases between the barrel of the weapon and the projectile and not disturb the separation of the sabot segments at the outlet of the barrel.
  • the subject of the invention is a sealing belt for a shoe of an arrow projectile, shoe formed by several segments separated by joint planes, belt comprising at least one housing, in line with each joint plane, at the 'inside of which is disposed a pawn, belt characterized in that the pawn does not enter the shoe.
  • a first advantage of such a configuration is to ensure a localization of the rupture of the belt at the level of the joint planes, during the separation of the segments of the sabot at the outlet of the barrel of the weapon.
  • Another advantage is to ensure perfect sealing against propellant gases during the firing phase in the barrel of the weapon, in particular in the tubes having a high degree of wear.
  • Non-stick means can be placed between the belt and the shoe segments.
  • This non-stick means may consist of a plastic material of the polytetrafluoroethylene type deposited on the bottom and the sides of the annular groove receiving the belt.
  • the pin has a compressive strength at least equal to that of the sealing belt and is preferably made of the same material as the sealing belt.
  • the housing is produced in a direction substantially radial to the belt and has a substantially cylindrical shape.
  • the housing has a substantially oblong shape, its greatest length being oriented along the joint plane.
  • the housing does not open at the internal diameter of the belt and the housing-pin connection is provided by a sticky elastomer.
  • the housing-pin connection is provided by a tight fit.
  • the belt has two housings of which only the one located towards the front of the projectile is provided with a pin.
  • the sealing belt comprises two housings each provided with a pin and a rupture initiation produced in line with each joint plane and on the front side of the projectile and which opens into the housing located furthest forward from the projectile.
  • the initiation of rupture opens between the two housings by passing through the housing which is located furthest forward from the projectile.
  • an arrow projectile 1 is conventionally constituted by a shoe 2 made of light alloy (such as aluminum) comprising several segments 2a, 2b, 2c (generally three), and in which is disposed a penetrator 3 of heavy material.
  • a shoe 2 made of light alloy (such as aluminum) comprising several segments 2a, 2b, 2c (generally three), and in which is disposed a penetrator 3 of heavy material.
  • the different segments of the shoe are held together by a hoop 4 located at the front of the projectile (along arrow C) and a belt 5 which is also intended to achieve, when fired, the seal against the propellant gases between the tube of the weapon and projectile.
  • the front hoop 4 and the belt 5 are arranged in annular grooves 6 and 7 arranged on the shoe 2. Their establishment is carried out by overmolding of a plastic material such as polyamide 6, directly on the shoe.
  • the belt 5 has an external diameter greater than the caliber of the barrel of the weapon.
  • a seal 8 located on the rear of the projectile (according to arrow D) seals between the joint planes of the shoe segments and between the shoe and the indenter. This seal is obtained by injecting an elastomer on the assembled shoe.
  • the belt has two housings 9 and 10 made in line with the joint plane 11 of the segments 2a and 2b.
  • the two housings 9 and 10 are produced in a direction substantially radial to the belt and have a substantially cylindrical shape and a depth less than the thickness of the belt.
  • the sealing belt of an arrow shell is generally put in place by overmolding. Overmolding takes place directly in the groove 7 made on the shoe 2, after placement on the bottom and sides of the groove of a plastic material preventing adhesion, for example a polytetrafluoroethylene.
  • the belt thus has no attachment point to the shoe segments.
  • Housing can only be produced by machining after overmolding. Also, in order not to risk damage to the segments, the housings do not open at the internal diameter of the belt and it There therefore remains at the bottom of the housings a material thickness (e) of the order of 0.1 mm which corresponds only to a machining tolerance of the housings.
  • the realization of the housings can be carried out before fitting the belt on the shoe.
  • the housings can cross the belt.
  • the housings 9 and 10 constitute a means which locates the rupture of the belt in line with the joint plane 11 between the segments 2a and 2b during their separation at the outlet from the barrel of the weapon.
  • Similar housings are provided in line with the parting lines between segments 2b and 2c and between segments 2c and 2a.
  • a groove 15 of small width (of the order of 1 mm) is made in line with the joint plane 11.
  • This groove made for example by machining using a large diameter saw burr (of the order 60 mm), passes in the two segments 2a and 2b of the shoe 2 and in the belt 5 coming slightly to open in the housing 9.
  • the groove 15 is made on the front side of the arrow projectile (along arrow C) and constitutes a additional fracture initiator for the belt 5 which does not harm the sealing against propellant gases.
  • pins 14 are put in place after the groove 15 has been made. These pins have a compressive strength equal to or greater than that of the sealing belt 5. material similar to that of the belt which is generally made of polyamide 6.
  • the pins 14 may also be made of a material with high ductility suitable for creep under high pressure and non-aggressive for the barrel of the weapon such as copper, l aluminum or a plastic or composite material.
  • the pins 14, bearing at the bottom of the housings 9 and 10 and of shape complementary to the latter, have in their upper part a recess (r), relative to the external diameter of the belt 5, such that they are all the same oversized relative to the caliber of the barrel of the weapon by a value between 0.1 and 1 mm.
  • the overcalibration of the pins 14 causes, in the same way as the belt, a forcing in the barrel of the weapon which seals the propellant gases at the level of the housings.
  • the pins 14 are advantageously held in their housing so that they can, from the start of the separation of the shoe segments, easily eject out of housings while remaining integral with the latter when handling the projectile.
  • the pins 14 constitute a means of reinforcing the sealing belt at the level of the housings 9 and 10 and ensure perfect sealing against propellant gases. This prevents collapse of the belt at the housing 9 and 10 and a discontinuity in the seal.
  • the belt 5 comprises a single recess 9 of oblong shape made in line with the joint plane 11 and oriented in the joint plane along its greatest length.
  • a pin 14 of complementary shape In the housing 9 is disposed a pin 14 of complementary shape.
  • the belt 5 comprises two housings 9 and 10 of substantially cylindrical shape produced in line with the joint plane 11 of the two segments 2a and 2b.
  • the housing 9 comprises a pin 14 of complementary shape.
  • the housing 10 remains empty, but the belt has a sufficient thickness of material behind the latter, which depends on the maximum pressure generated by the propellant gases, in order to prevent the belt from collapsing at the housing 10 at the time of shoot. For example, for a pressure less than or equal to 400 MPa, this thickness will be greater than 0.5 mm.
  • the belt 5 comprises two housings 9 and 10 of substantially cylindrical shape produced in line with the joint plane 11 of the two segments 2a and 2b.
  • At least one counter will be placed in the housing located furthest forward from the projectile (on the side designated in the figures by arrow C).
  • This pin ensures the resistance of the belt to compressive forces during the passage of the forcing cone and this despite the presence of the initiation of rupture.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Adhesive Tapes (AREA)
  • Packages (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Package Frames And Binding Bands (AREA)
  • Gasket Seals (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP93401895A 1992-07-24 1993-07-22 Dichtungsband für Pfeilgeschoss Expired - Lifetime EP0580511B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR929209153A FR2694081B1 (fr) 1992-07-24 1992-07-24 Ceinture d'étanchéité de projectile flèche.
FR9209153 1992-07-24

Publications (2)

Publication Number Publication Date
EP0580511A1 true EP0580511A1 (de) 1994-01-26
EP0580511B1 EP0580511B1 (de) 1996-09-25

Family

ID=9432228

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401895A Expired - Lifetime EP0580511B1 (de) 1992-07-24 1993-07-22 Dichtungsband für Pfeilgeschoss

Country Status (4)

Country Link
EP (1) EP0580511B1 (de)
AT (1) ATE143485T1 (de)
DE (1) DE69305018T2 (de)
FR (1) FR2694081B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0703428A1 (de) * 1994-09-21 1996-03-27 Rheinmetall Industrie GmbH Abwerfbarer Treibkäfig für ein unterkalibriges Geschoss
EP1475600A1 (de) * 2003-05-07 2004-11-10 Rheinmetall W & M GmbH Abwerfbarer Treibkäfig
EP2221576A3 (de) * 2009-02-20 2013-07-24 Rheinmetall Waffe Munition GmbH Verfahren zum Einbringen von Sollbruchstellen in ein ringförmiges Halte- und Dichtungsband eines Treibkäfiggeschosses und Laborierwerkzeug zur Durchführung des Verfahrens

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2784177B1 (fr) 1998-10-01 2005-09-16 Giat Ind Sa Sabot pour projectile sous calibre
DE19933184C2 (de) * 1999-07-15 2002-11-21 Rheinmetall W & M Gmbh Unterkalibriges Geschoss
RU199619U1 (ru) * 2020-05-26 2020-09-09 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования «Новосибирский Государственный Технический Университет» Осколочно-фугасный снаряд к гладкоствольному оружию

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR578477A (fr) * 1923-05-24 1924-09-26 Perfectionnements apportés aux projectiles d'artillerie
US4040359A (en) * 1976-05-14 1977-08-09 The United States Of America As Represented By The Secretary Of The Army Discarding frangible rotating band
FR2365098A1 (fr) * 1976-09-20 1978-04-14 Rheinmetall Gmbh Projectile annulaire stabilise par giration
EP0326653A1 (de) * 1988-02-01 1989-08-09 Rheinmetall GmbH Treibkäfig mit Führungsband

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR578477A (fr) * 1923-05-24 1924-09-26 Perfectionnements apportés aux projectiles d'artillerie
US4040359A (en) * 1976-05-14 1977-08-09 The United States Of America As Represented By The Secretary Of The Army Discarding frangible rotating band
FR2365098A1 (fr) * 1976-09-20 1978-04-14 Rheinmetall Gmbh Projectile annulaire stabilise par giration
EP0326653A1 (de) * 1988-02-01 1989-08-09 Rheinmetall GmbH Treibkäfig mit Führungsband

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0703428A1 (de) * 1994-09-21 1996-03-27 Rheinmetall Industrie GmbH Abwerfbarer Treibkäfig für ein unterkalibriges Geschoss
EP1475600A1 (de) * 2003-05-07 2004-11-10 Rheinmetall W & M GmbH Abwerfbarer Treibkäfig
EP2221576A3 (de) * 2009-02-20 2013-07-24 Rheinmetall Waffe Munition GmbH Verfahren zum Einbringen von Sollbruchstellen in ein ringförmiges Halte- und Dichtungsband eines Treibkäfiggeschosses und Laborierwerkzeug zur Durchführung des Verfahrens
KR101531427B1 (ko) * 2009-02-20 2015-07-06 라인메탈 바페 뮤니션 게엠베하 새보우 케이지 발사체의 링형 지지 및 밀봉 밴드 내에 설정 파괴점을 형성하는 방법 및 이 방법을 실시하는 작업 공구

Also Published As

Publication number Publication date
ATE143485T1 (de) 1996-10-15
DE69305018T2 (de) 1997-02-06
FR2694081A1 (fr) 1994-01-28
FR2694081B1 (fr) 1994-09-30
EP0580511B1 (de) 1996-09-25
DE69305018D1 (de) 1996-10-31

Similar Documents

Publication Publication Date Title
EP0906556A1 (de) Nichtletales geschoss
FR2527763A1 (fr) Element de propulsion pour un projectile sous-calibre
EP0307307B1 (de) Verbindungsring zwischen Geschoss und Geschosshülse
FR2679993A1 (fr) Munition, en particulier du type telescope.
EP0580511B1 (de) Dichtungsband für Pfeilgeschoss
EP0491614B1 (de) Drehbarer Führungsring für Geschosse jeden Kalibers und Verfahren zu seiner Herstellung
FR2806789A1 (fr) Tube allumeur pour une munition d'artillerie
EP0471617B1 (de) Dichtungsband für Pfeilgeschoss
EP3489617B1 (de) Projektil
EP0728293B1 (de) Flintenlaufgeschoss mit doppeleindringung und reduzierter schussweite
FR2880680A1 (fr) Munition d'entrainement et d'intervention
FR2665762A1 (fr) Projectiles.
EP1103780B1 (de) Verbindungsteil zwischen Geschoss und Geschosshülse und Methode zur Montage eines Dichtringes mittels eines derartigen Verbindungteiles
EP1693646B1 (de) Führungsband für Artilleriegeschoss
EP0471616A1 (de) Vorrichtung zum Sperren der Drehbewegung zwischen Pfeilgeschoss und Treibkäfig
EP4025865A1 (de) Anti-flugzeugschale für teleskopische munition mit doppelter entriegelung
EP0752571B1 (de) Kurzbahngeschoss
EP0526316B1 (de) Munition, insbesondere Teleskopartige Munition
FR2730050A1 (fr) Projectile a disque de poussee
FR2633712A1 (fr) Perfectionnement apporte aux munitions a etuis rechargeables
FR2507765A1 (fr) Procede et dispositif de tir d'une munition fleche a l'aide d'un tube raye
CA2176029C (fr) Balle de chasse a double penetration et a portee reduite
EP1431701A1 (de) Hülsenlose Munition und Montageverfahren für eine solche Munition
EP1023573B1 (de) Treibkäfig mit verbesserter gasabdichtung für submunitionskörper
EP0382657A1 (de) Patrone für Gewehre oder andere Feuerwaffen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE FR GB GR IT NL SE

17P Request for examination filed

Effective date: 19940225

17Q First examination report despatched

Effective date: 19950627

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR GB GR IT NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19960925

Ref country code: AT

Effective date: 19960925

REF Corresponds to:

Ref document number: 143485

Country of ref document: AT

Date of ref document: 19961015

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960925

REF Corresponds to:

Ref document number: 69305018

Country of ref document: DE

Date of ref document: 19961031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19961225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970731

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: GIAT INDUSTRIES

Effective date: 19970731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19980201

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050722

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070627

Year of fee payment: 15

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20080722

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080722

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090721

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090707

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69305018

Country of ref document: DE

Effective date: 20110201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100802