US20050188891A1 - Discarded propelling cage sabot - Google Patents

Discarded propelling cage sabot Download PDF

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Publication number
US20050188891A1
US20050188891A1 US10/838,354 US83835404A US2005188891A1 US 20050188891 A1 US20050188891 A1 US 20050188891A1 US 83835404 A US83835404 A US 83835404A US 2005188891 A1 US2005188891 A1 US 2005188891A1
Authority
US
United States
Prior art keywords
propelling cage
sabot
sealing band
cage sabot
discarded
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.)
Abandoned
Application number
US10/838,354
Other languages
English (en)
Inventor
Thomas Heitmann
Michael Imdahl
Martin Berg
Stefan Keil
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 W&M GmbH
Original Assignee
Rheinmetall W&M 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 W&M GmbH filed Critical Rheinmetall W&M GmbH
Assigned to RHEINMETALL W & M GMBH reassignment RHEINMETALL W & M GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BERG, MARTIN, HEITMANN, THOMAS, IMDAHL, MICHAEL, KEIL, STEFAN
Publication of US20050188891A1 publication Critical patent/US20050188891A1/en
Abandoned 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 discarded sabot for a sub-caliber projectile.
  • the sabot comprises several propelling cage sabot sections that are arranged side-by-side in a circumferential direction and separated by joints.
  • the sabot further comprises a pressure flange that is followed on the tail end by a frustum-shaped propelling cage sabot region.
  • Propelling cage sabots of this type are known, for example, from references EP 0 703 428 B1 or DE 199 29 915 A1 and are primarily used for large-caliber ammunition, in particular, those fired from tanks.
  • the known propelling cage sabots generally are provided with a continuous sealing band of plastic around the outer circumference of the pressure flange which is either sprayed onto the pressure flange or is pressed as a complete component into a groove-shaped recess of the pressure flange.
  • Known propelling cage sabots have the disadvantage of being relatively heavy because the sealing band is supported nearly full caliber by the pressure flange of the propelling cage sabot.
  • the sealing bands of known propelling cage sabots are relatively short. As a result, long and deep erosion damage in the weapon barrel cannot be compensated for with these known bands.
  • the known sealing bands must be provided with additional milled slots (predetermined breaking points) to aid the separation of the propelling cage sabot sections after the projectile has left the weapon barrel.
  • FIG. 1 of reference DE 38 43 566 C1 furthermore shows that a ring element can be used as a sealing band, which has a detent that projects on the front toward the inside and engages in a corresponding groove-shaped recess in the pressure flange. On the tail end, this detent is followed by a frustum-shaped inside surface by means of which the sealing band supports itself on the frustum-shaped propelling cage sabot region. This sealing band projects at the tail end over the pressure flange.
  • the reference does not disclose further information concerning the purpose of this sealing band design.
  • a sealing band as shown in reference DE 38 43 566 C1 can be considerably wider for use than is the case for standard propelling cage sabots where the sealing band rests on the pressure flange, thus making it easy to increase the sealing length of the sealing band.
  • the weight of the propelling cage sabot which generally is made from aluminum, can be decreased considerably by replacing parts of the propelling cage sabot with the more light-weight sealing band of plastic.
  • the invention is primarily based on the idea of the sealing band having several sealing band segments, arranged side-by-side in a circumferential direction and separated by joints.
  • One sealing band segment is assigned to a propelling cage sabot section and is connected to it in a form-locking and/or force-locking manner.
  • each individual propelling cage sabot section is connected to a separate sealing band segment.
  • the sealing band segment can be connected to the corresponding propelling cage sabot section, for example by gluing it on, welding it on, with the aid of a form-locking connection (e.g. a dovetailed connection) or a force-locking connection (e.g. an axial press fit).
  • the propelling cage sabot is held together only by the vulcanizing layer arranged on the tail end of the propelling cage sabot and by the base lid, provided it exists.
  • the vulcanizing layer additionally causes an initial seal before the projectile is pushed into the caliber region of the respective weapon barrel during firing.
  • the tail region of the sealing band is provided with a recess that is open at the tail end, so as to form a first sealing lip that fits against the propelling cage sabot, as well as a second sealing lip that points toward the outside.
  • the propelling cage sabot weight is additionally reduced.
  • the propellant charge gases push the second sealing lip against the inside wall of the weapon barrel during firing, thus resulting in an improved seal against propellant gases that would otherwise flow past the propelling cage sabot on the side.
  • This sealing movement of the second sealing lip can be further supported by a bending groove that is arranged on the outside of the second sealing lip, at the level of the recess bottom.
  • the sabot includes a plurality of propelling cage sabot sections arranged side-by-side in a circumferential direction and separated by separating joints, each of the propelling cage sabot sections having a pressure flange having a groove-shaped recess, and a frustum-shaped propelling cage sabot region which is positioned rearward in the direction of flight relative to the pressure flange.
  • the sabot also includes a plurality of sealing band segments that are arranged side-by-side in the circumferential direction and are separated by separating joints, each of the sealing band segments corresponding to one of the propelling cage sabot sections and being connected form-locking and/or force-locking to that propelling cage sabot section.
  • the plurality of sealing band segments form a sealing band of plastic material attached to the outer circumference of the pressure flange, the sealing band being a ring element with a detent, which projects inwardly in a radial direction of the sabot and engages the groove-shaped recess of the pressure flange, and a frustum-shaped inside surface by which the sealing band supports itself on the frustum-shaped propelling cage sabot region.
  • the sabot also includes a vulcanizing layer provided at a tail region of the sealing band that holds together the sealing band segments.
  • FIG. 1 shows a side view, including a partial sectional view, of a projectile provided with a discarded propelling cage sabot according to the invention having three sections, which is provided with a sealing band having three separate segments on its pressure flange arranged on the tail end; and
  • FIG. 2 shows a perspective view of a preferred sealing band segment in according with the invention.
  • the number 1 in FIG. 1 refers to a sub-caliber projectile that can be fired from a smooth bore tank cannon. Essentially, it comprises a penetrator 2 with guide fins 3 arranged on the tail end and a propelling cage sabot 4 that encloses the penetrator 2 and is provided on the tail end with a base lid 5 for connecting the projectile 1 to a cartridge case that is not shown herein.
  • the propelling cage sabot 4 of, for example, aluminum is provided with two guide flanges 6 , 7 for guiding it inside the weapon barrel, wherein a frustum-shaped propelling cage sabot region 8 follows the guide flange 7 , henceforth also called pressure flange, on the tail end of the cage.
  • the propelling cage sabot 4 has three propelling cage sabot sections 9 that are arranged side-by-side in a circumferential direction around penetrator 2 .
  • the propelling cage sabot sections 9 are separated by separating joints 11 which extend in the direction of the longitudinal axis 10 of the projectile 1 .
  • a plastic sealing band 12 is attached, for example glued, to the outer circumference of the pressure flange 7 and has three sealing band segments 14 which are arranged side-by-side in a circumferential direction around penetrator 2 and are separated by separating joints 13 .
  • Each of the sealing band segments 14 is attached to one of the three propelling cage sabot sections 9 .
  • the three sealing band segments 14 together form a ring element with a detent 15 on its leading edge that projects inward and engages in a corresponding groove-shaped recess 16 of the pressure flange 7 .
  • the sealing bands also have a frustum-shaped inside surface 17 , which follows the detent 15 at the tail end, by which the sealing band 12 supports itself on the frustum-shaped propelling cage sabot region 8 .
  • the tail region of the propelling cage sabot 4 as well as the sealing band 12 is provided with a vulcanizing layer 18 which holds together the propelling cage sabot sections 9 and the sealing band segments 14 .
  • FIG. 2 shows that the tail end of the sealing band segment 14 ′ is provided with a recess 19 , so that two sealing lips 20 , 21 are formed.
  • First sealing lip 20 fits itself against the frustum-shaped propelling cage sabot region 8 and a second, outward pointing sealing lip 21 that can deform to form a seal against the weapon barrel when subjected to pressure.
  • an additional bending groove 22 is arranged on the outside of the second sealing lip 21 , at, for example, the bottom 23 level of recess 19 .
  • the sealing band segments 14 , 14 ′ can also be welded instead of glued to the associated propelling cage sabot section 9 .
  • the detent 15 on the respective sealing band segment 14 , 14 ′ and the groove-shaped recess 16 in the associated propelling cage sabot section 9 can also be designed to form a dovetailed connection, or can be designed such that a force-locking press fit is created with the detent 15 and the groove-shaped recess 16 .
  • the example sabot shown has three segments, more than three segments can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
US10/838,354 2003-05-07 2004-05-05 Discarded propelling cage sabot Abandoned US20050188891A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320194.7 2003-05-07
DE10320194A DE10320194A1 (de) 2003-05-07 2003-05-07 Abwerfbarer Treibkäfig

Publications (1)

Publication Number Publication Date
US20050188891A1 true US20050188891A1 (en) 2005-09-01

Family

ID=32981243

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/838,354 Abandoned US20050188891A1 (en) 2003-05-07 2004-05-05 Discarded propelling cage sabot

Country Status (5)

Country Link
US (1) US20050188891A1 (de)
EP (1) EP1475600B1 (de)
JP (1) JP4387861B2 (de)
DE (2) DE10320194A1 (de)
IL (1) IL161799A0 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060032394A1 (en) * 2002-07-26 2006-02-16 Giat Industries Sealing band for projectile and ammunition provide with such a band
US20120312092A1 (en) * 2010-09-13 2012-12-13 Raytheon Company Projectile that includes a sensor to obtain environmental data during launch from a cannon
US20130000506A1 (en) * 2011-06-22 2013-01-03 U.S. Government As Represented By The Secretary Of The Army Sabot
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
RU2537356C1 (ru) * 2013-10-16 2015-01-10 Открытое акционерное общество "Конструкторское бюро приборостроения им. академика А.Г. Шипунова" Снаряд
US20190308748A1 (en) * 2012-06-07 2019-10-10 Aerovironment, Inc. System for detachably coupling an unmanned aerial vehicle within a launch tube
US10502515B2 (en) * 2017-01-17 2019-12-10 Raytheon Company Launch piston brake

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102020115703B4 (de) 2020-06-15 2024-02-22 Rheinmetall Waffe Munition Gmbh Treibkäfig
CN112129166B (zh) * 2020-09-21 2021-12-31 北京理工大学 一种用于轻气炮发射长杆弹体的环型弹托

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738279A (en) * 1970-07-24 1973-06-12 Us Navy Sabot for sub-calibre projectile
US3834314A (en) * 1972-12-29 1974-09-10 Aai Corp Puller sabot ammunition with slip seal
US4187783A (en) * 1978-03-13 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Discarding sabot munition
US4444113A (en) * 1981-04-06 1984-04-24 The United States Of America As Represented By The Secretary Of The Army High-pressure self-sealing obturator in sabot discard projectile
US4487131A (en) * 1980-10-04 1984-12-11 Rheinmetall Gmbh Cartridge ammunition
US4747191A (en) * 1980-09-03 1988-05-31 Rheinmetall Gmbh Process for manufacturing a sabot arrangement for a sub-caliber fin-stabilized projectile for a large caliber weapon
US4833995A (en) * 1985-07-19 1989-05-30 Mauser-Werke Oberndorf Gmbh Fin-stabilized projectile
US5189254A (en) * 1990-08-13 1993-02-23 Giat Industries Sealing band for an arrow-type projectile
US6712005B2 (en) * 2001-11-24 2004-03-30 Rheinmetall W & M Gmbh Projectile
US20040244631A1 (en) * 2003-02-10 2004-12-09 Giat Industries Sabot for sub-calibre projectiles
US20060032394A1 (en) * 2002-07-26 2006-02-16 Giat Industries Sealing band for projectile and ammunition provide with such a band

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665760A1 (fr) * 1986-01-29 1992-02-14 British Aerospace Obturateur pour projectile.
FR2694081B1 (fr) * 1992-07-24 1994-09-30 Giat Ind Sa Ceinture d'étanchéité de projectile flèche.

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738279A (en) * 1970-07-24 1973-06-12 Us Navy Sabot for sub-calibre projectile
US3834314A (en) * 1972-12-29 1974-09-10 Aai Corp Puller sabot ammunition with slip seal
US4187783A (en) * 1978-03-13 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Discarding sabot munition
US4747191A (en) * 1980-09-03 1988-05-31 Rheinmetall Gmbh Process for manufacturing a sabot arrangement for a sub-caliber fin-stabilized projectile for a large caliber weapon
US4487131A (en) * 1980-10-04 1984-12-11 Rheinmetall Gmbh Cartridge ammunition
US4444113A (en) * 1981-04-06 1984-04-24 The United States Of America As Represented By The Secretary Of The Army High-pressure self-sealing obturator in sabot discard projectile
US4833995A (en) * 1985-07-19 1989-05-30 Mauser-Werke Oberndorf Gmbh Fin-stabilized projectile
US5189254A (en) * 1990-08-13 1993-02-23 Giat Industries Sealing band for an arrow-type projectile
US6712005B2 (en) * 2001-11-24 2004-03-30 Rheinmetall W & M Gmbh Projectile
US20060032394A1 (en) * 2002-07-26 2006-02-16 Giat Industries Sealing band for projectile and ammunition provide with such a band
US20040244631A1 (en) * 2003-02-10 2004-12-09 Giat Industries Sabot for sub-calibre projectiles

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7503262B2 (en) * 2002-07-26 2009-03-17 Giat Industries Sealing band for projectile, sub-caliber projectile and ammunition equipped with such a band
US20060032394A1 (en) * 2002-07-26 2006-02-16 Giat Industries Sealing band for projectile and ammunition provide with such a band
US8701561B2 (en) * 2010-09-13 2014-04-22 Raytheon Company Projectile that includes a sensor to obtain environmental data during launch from a cannon
US20120312092A1 (en) * 2010-09-13 2012-12-13 Raytheon Company Projectile that includes a sensor to obtain environmental data during launch from a cannon
US20130000506A1 (en) * 2011-06-22 2013-01-03 U.S. Government As Represented By The Secretary Of The Army Sabot
US8661984B2 (en) * 2011-06-22 2014-03-04 The United States Of America As Represented By The Secretary Of The Army Sabot
US9052173B2 (en) 2011-06-22 2015-06-09 The United States Of America As Represented By The Secretary Of The Army Sabots for rifled guns
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
US20190308748A1 (en) * 2012-06-07 2019-10-10 Aerovironment, Inc. System for detachably coupling an unmanned aerial vehicle within a launch tube
US10442554B2 (en) 2012-06-07 2019-10-15 Aerovironment, Inc. System for detachably coupling an unmanned aerial vehicle within a launch tube
US11661208B2 (en) * 2012-06-07 2023-05-30 Aerovironment, Inc. System for detachably coupling an unmanned aerial vehicle within a launch tube
RU2537356C1 (ru) * 2013-10-16 2015-01-10 Открытое акционерное общество "Конструкторское бюро приборостроения им. академика А.Г. Шипунова" Снаряд
US10502515B2 (en) * 2017-01-17 2019-12-10 Raytheon Company Launch piston brake

Also Published As

Publication number Publication date
JP2004333116A (ja) 2004-11-25
IL161799A0 (en) 2005-11-20
EP1475600B1 (de) 2007-09-26
JP4387861B2 (ja) 2009-12-24
DE502004005057D1 (de) 2007-11-08
EP1475600A1 (de) 2004-11-10
DE10320194A1 (de) 2004-12-02

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Legal Events

Date Code Title Description
AS Assignment

Owner name: RHEINMETALL W & M GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HEITMANN, THOMAS;IMDAHL, MICHAEL;BERG, MARTIN;AND OTHERS;REEL/FRAME:015299/0564

Effective date: 20040429

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION