EP0046888A1 - Ceinture d'étanchéité pour munition de canons à âme lisse - Google Patents

Ceinture d'étanchéité pour munition de canons à âme lisse Download PDF

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Publication number
EP0046888A1
EP0046888A1 EP81106024A EP81106024A EP0046888A1 EP 0046888 A1 EP0046888 A1 EP 0046888A1 EP 81106024 A EP81106024 A EP 81106024A EP 81106024 A EP81106024 A EP 81106024A EP 0046888 A1 EP0046888 A1 EP 0046888A1
Authority
EP
European Patent Office
Prior art keywords
sealing element
arrangement according
receiving surface
sealing
sealing arrangement
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
EP81106024A
Other languages
German (de)
English (en)
Other versions
EP0046888B1 (fr
Inventor
Jean Claude Sauvestre
Joel Lebond
Jack Brouillon
Hans Werner Luther
Jürgen Winkelmann
Peter Wallow
Bernhard Bisping
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 Industrie AG
Direction General pour lArmement DGA
Etat Francais
Original Assignee
Rheinmetall GmbH
Direction General pour lArmement DGA
Etat Francais
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 GmbH, Direction General pour lArmement DGA, Etat Francais filed Critical Rheinmetall GmbH
Priority to AT81106024T priority Critical patent/ATE26178T1/de
Publication of EP0046888A1 publication Critical patent/EP0046888A1/fr
Application granted granted Critical
Publication of EP0046888B1 publication Critical patent/EP0046888B1/fr
Expired 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
    • F42B14/02—Driving bands; Rotating bands

Definitions

  • the invention relates to a sealing arrangement according to the preamble of patent claim 1.
  • a good meeting pattern requires, among other things, reproducible initial conditions from shot to shot: the projectile should start moving at a given initial pressure in the pipe. Forcing is primarily used to meet this requirement. It is achieved by a circumferential guide band made of a deformable material and with an outer diameter which is larger by a predetermined amount than the inner diameter of the tube in its caliber part. A transition cone between the cargo space and the narrower caliber part is usually provided in the tube. The guide band arrives in the area of the transition cone in such a way that it is pressed, if necessary partially sheared, at the latest when fired. The work to be done is a measure of that A seal is arranged in the circumferential area of the projectile in order to largely utilize the energy from the propellant gas pressure that builds up during the shot development.
  • the invention has for its object to provide measures and means to ensure reproducible initial conditions even under the changed conditions from shot to shot.
  • a sabot 2 with a gas pressure-receiving surface 5 on the rear in the area of its peripheral surface 3 has a not-specified recess with a wedge surface 11.1 rising in the weft direction S against the peripheral surface 3 and a front contact surface 14.
  • a propellant charge sleeve 40 overlaps the gas pressure receiving surface 5 and ends in the region of a circumferential twist 20 which connects a space 50 above the gas pressure receiving surface 5 with the recess.
  • a sealing element 7.1 in the form of an O-ring and a metal ring 23, which is divided in a manner not shown, are slidably arranged next to one another on the wedge surface 11.1, the cross section of which has a wedge surface 10.1 for resting on the wedge surface 11.1.
  • parts 7.1 and 23 of an inner pipe surface 30 are directly adjacent.
  • a receiving surface 8.1 of the sealing element 7.1 faces the twist 20.
  • the O-ring 7.1 and the metal ring 23 are moved in the direction of arrow S against the contact surface 14 under the propellant gas pressure which builds up on the receiving surface 8.1 during the development of the shot.
  • the outer surface areas 6 simultaneously move in the direction of an arrow R and are finally pressed against the immediately adjacent inner pipe surface 30 in such a way that a prescribable static friction resistance results from the contact pressure. This replaces the above-mentioned enforcement.
  • Figure 2 has the sabot 2 on the circumference in connection with a unspecified rotation following a front bearing surface 14, a first bearing surface 12.1 and a stepped bearing surface 12.2.
  • Sealing element 7.2 immediately adjacent sealing element 7.2 is designed as a band of wedge-shaped cross section with circumferential annular grooves 24 and a lower wedge surface 10.2. Under the wedge surface 10.2 a top-side wedge surface engages a .11.2 designed as a band body 9.1, 12 slidably in the direction of arrow S on the bearing surfaces 1 is arranged and 12.2.
  • the body 9.1 also has annular grooves 24 on the circumferential side facing the inner tube surface 30, not shown.
  • the receiving surface 8.2 of the body 9.1 complements the gas pressure receiving surface 5 in the peripheral area.
  • the sealing element 7.2 designed as a band is subdivided in a manner not shown and has a plastic band 25 for holding it together.
  • An only schematically shown luggeschoß F 1 is located with its longitudinal axis A in the unspecified bore axis of the tube and has the sabot 2 a common positive engagement region 4, in which, for example, a thread can be provided.
  • the body 9.1 is moved in the direction of the arrow S under the propellant gas pressure which builds up during the shot development on the receiving surface 8.2. This results in a movement of the outer surface region 6 of the sealing element 7.2 in the direction of the arrow R.
  • the plastic band 25 can be stretched until it tears , while the outer surface area 6 of the sealing element 7.2 of the immediately adjacent inner tube surface 30, not shown, presses on to ensure the already mentioned static friction resistance.
  • the exemplary embodiment according to FIG. 3 differs from that according to FIG. 2 essentially in that the propellant charge sleeve 40, with an inward-extending extension 41, covers a region of the gas pressure receiving surface 5 close to the circumference and the receiving surface 8.3 of the body 9.1 before firing.
  • the sabot 2 has a recess 28 on the circumference, which leaves two steps (not designated) in a front contact surface 14 and one rear contact surface 14 'is connected to the peripheral surface 3.
  • An elastic band of rectangular cross section is arranged in the recess as a sealing element 7.3. It lies on a flat steel belt 9.2, the underside of which is designed as a receiving surface 8.4.
  • Via bores 19 made in the gas pressure receiving surface 5, the space 50 is in constant connection with the recess 28 and consequently with the receiving surface 8.4.
  • a second sealing element 7.1 designed as an O-ring is present in an annular groove (not designated in more detail).
  • the propellant gas pressure which builds up during the weft development acts on the receiving surface 8.4 in such a way that the sealing element 7.3 is moved with its outer surface area 6 in the direction of arrow R against the immediately adjacent inner pipe surface 30 in order to ensure a sufficient contact pressure.
  • FIGS. 5 and 6 differs from that according to FIG. 4 essentially by a gas pressure receiving surface 5 which overhangs towards the arrow S to the rear, so that only comparatively short bores 19 are required in order to space 50 with the underside designed as receiving surface 8.5 to connect the body 9.3 present in the form of a flat, divided steel strip.
  • the sealing element 7.5 is arranged on the contact surface 12 and with direct contact with the front contact surface 14. It consists of a rubber-elastic material in which copper rings 21.1 arranged at an angle to one another are vulcanized. A region of the sealing element 7.5 which is immediately adjacent to the gas pressure receiving surface 5 is designed as a fillet such that the receiving surface 8.6 ends in a sealing lip 17 on the rear.
  • the sealing element 7.6 according to FIG. 8 also has rings 21.2 vulcanized into a rubber-elastic material.
  • the channel-shaped cross-sectional profile of the vulcanized rings 21.2 leads to a profile stretching in the direction of arrow R, which is accompanied by a bulging of the rubber-elastic material and the required pressing of the outer surface area 6 against the immediately adjacent inner tube surface, not shown .
  • the sealing element 7.7 which is firmly connected to the front contact surface 14, has an essentially triangular cross section.
  • a body 9.4 channel-shaped cross section is vulcanized onto its side facing the gas pressure receiving surface 5.
  • the body 9.4 is inclined with its receiving surface .8.8 backwards against the gas pressure receiving surface 5 and touches the bearing surface 12 in a line 22.
  • a support arranged on the circumferential side on the rearwardly projecting area of the body 9.4 takes over as a sealing lip 17 the pre-sealing function already mentioned in another connection .
  • the contact surface 14 is curved. Between it and the counter surface 14 ', the sealing element 7.8 is vulcanized in from a rubber-elastic material, the receiving surface 8.9 of which bores 19 in the direction of the arrow S in the gas pressure receiving surface 5 closes the front side.
  • the sabot 2 In the circumferential area of the gas pressure receiving surface 5, the sabot 2 has a second sealing element 7.9 with a circumferential sealing lip 17 in an unspecified rotation.
  • the sealing lip 17 initially contacts the immediately adjacent inner pipe surface 30 for preliminary sealing.
  • the propellant gas pressure present on the receiving surface 8.9 leads to a deformation of the sealing element 7.8 such that between the outer surface area bulging in the direction of the arrows R. 6 and the pipe inner surface 30 the required static friction comes into being.
  • the sabot 2 has an unspecified recess in the circumferential area, which extends with a contact surface 12 between the front contact surface 14 running perpendicular to the circumferential surface 3 and the curved rear counter surface 14 '.
  • a nylon band 9.5 is arranged, which protrudes by a predetermined amount over the peripheral surface 3 and is delimited to the rear by the receiving surface 8.10 and to the front by an inclined surface 13.
  • Another nylon band 9.5 is arranged in the immediate vicinity of the front contact surface 14 and is delimited to the rear by an inclined surface 15 that runs essentially parallel to the inclined surface 13.
  • a nylon band 9.5 ' is trapezoidal in cross-section to the inclined surface 13 and a non-designated front surface of the nylon band 9.5 'arranged a rubber-elastic sealing element 7.10 trapezoidal cross-section.
  • End faces 9e of the nylon tapes form a respective oblique joint 16 or 18, the latter being - as indicated in FIG. 11 - also overlapping in the radial direction.
  • the nylon band 9.5 shifts in the direction of the arrow S and presses with its inclined surface 13 against the non-designated mating surface of the nylon band 9.5 '.
  • the latter is pressed against the sealing element 7.10, the rubber-elasticity of which causes its outer surface area 6 to migrate in the direction of the arrow R, so that the static friction resistance required for forcing occurs at the same time as sealing.
  • the nylon straps in question can expand and thereby advantageously reinforce the above-mentioned effect.
  • the sealing elements 7.11 and 7.11 "can only move by deformation relative to the bearing surface 12.
  • they form a kind of additional labyrinth seal with their respective lower part, not specified in the corresponding groove 27 or 29 an increased sealing effect.
  • the exemplary embodiments according to FIGS. 14 and 15 have a recess with surfaces 14 and 14 ′ directed perpendicular to the peripheral surface 3.
  • the nylon band 9.7 has an essentially rectangular cross section and is only bevelled on the top in a narrow front area 32.
  • a rubber-elastic sealing element 7.12 is arranged between an unspecified front end face of the nylon band 9.7 and the front contact surface 14, which also has an essentially rectangular cross section.
  • the embodiment according to FIG. 15 differs from the one described above by a rubber-elastic sealing element 7..13 with a trapezoidal lower part, which is fixed in a trapezoidal groove 29 and thus advantageously ensures an additional sealing effect.
  • the effect of the exemplary embodiment according to FIG. 15 is moreover essentially the same as that of exemplary embodiment 14.
  • the contact surface 12 extends in the circumferential recess between the front contact surface 14 running perpendicular to the circumferential surface 3 and the counter surface 1 4 ′ designed as a groove.
  • a first nylon band 9.9 abuts a first rubber-elastic sealing element 7.14, to which a second. Connects nylon tape 9.9 'and is in the immediate vicinity at the front with a second rubber-elastic sealing element 7.14', which is closely arranged on the front contact surface 14.
  • the two rubber-elastic sealing elements 7.14' and 7.14 'and the second nylon band 9.9' have a rectangular cross section.
  • the rubber-elastic sealing elements 7.15 and 7.15 ' have trapezoidal lower parts, which are fixed in associated grooves 26 and 29 in a trapezoidal cross section.
  • a second nylon band 9.10 'arranged between the sealing elements has a rectangular shape. Cross section on and lies on the support surface 12.
  • a rear first nylon band 9.10 is adapted with its curved receiving surface 8.15 of the rounded counter surface 14 '.
  • the first sealing element 7.16, the second nylon band 9.11' and the second sealing element 7.16 ' which is arranged in the immediate vicinity of the front contact surface 14, each have a trapezoidal cross section .
  • the nylon band 9.11 faces the sealing element 7.16 with its inclined surface 13, while the nylon band 9.11 'bears against the sealing element 7.16' with its front inclined end surface 13 '.
  • the receiving surface 8.16 of the first nylon band 9.11 which is adapted to the shape of the counter surface 14 ', is acted upon and the nylon band 9.11 is displaced in the direction of the arrow S.
  • the inclined surface 13 wedges under the sealing element 7.16; as the pressure increases, the second nylon band 9.11 'is also shifted to the right, so that its inclined end face 13' also wedges under the adjacent sealing element 7.16 '.
  • the embodiment according to FIG. 19 differs from that according to FIG. 18 essentially in that the sealing elements 7.17 and 7.17 'with lower parts of trapezoidal cross section are arranged in a groove 27 and 29, respectively, so that they have an additional sealing function in the area near the axis when the propellant gas pressure is built up fulfill.
  • the nylon band 9.13 with its receiving surface 8.18 is essentially matched to the rounded counter surface 14 '. It is directly adjacent with its oblique front end face 13 to the rubber-elastic sealing element 7.18, which is fitted to the recess in the immediate vicinity of the front contact surface 14.
  • the exemplary embodiment according to FIG. 21 differs from that according to FIG. 20 in that it has a lower part with a trapezoidal cross section which is assigned to the rubber-elastic sealing element 7.19 and which is arranged in a corresponding groove 29.
  • the exemplary embodiments according to FIGS. 22 and 23 differ from those according to FIGS. 20 and 21 in particular by the material for the rubber-elastic sealing elements 7.20 and 7.21. While executing Examples are made of rubber according to Figures 20 and 21, they consist of polypropylene in the embodiments of Figures 22 and 23.
  • the latter is directed against a two-part rubber seal which consists of a first sealing element 7.21 and a second sealing element 7.21 'arranged in the immediate vicinity of the front contact surface 14.
  • the cross-section of the sealing element 7.21 ' is essentially rectangular, with a circumferential sealing lip 37 is provided on the upper side, which extends in the opposite direction to the arrow S.
  • the mode of operation of the abovementioned exemplary embodiment is derived from the above descriptions, the sealing lip 37 taking on an additional sealing function in the immediate vicinity of the inner pipe surface 30.
  • the exemplary embodiment according to FIG. 25 differs from that according to FIG. 24 by a lower part of a trapezoidal cross section of the rubber-elastic sealing element 7.22, which is fastened in a circular groove with a trapezoidal cross section.
  • the additional sealing effect already mentioned in another context is achieved in the area closer to the axis.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Braking Arrangements (AREA)
  • Sealing Material Composition (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP81106024A 1980-09-03 1981-07-31 Ceinture d'étanchéité pour munition de canons à âme lisse Expired EP0046888B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81106024T ATE26178T1 (de) 1980-09-03 1981-07-31 Dichtanordnung bei munition fuer eine glattrohrwaffe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3033042 1980-09-03
DE3033042A DE3033042C2 (de) 1980-09-03 1980-09-03 Mittel zum Forcieren während der Schußentwicklung bei Munition für eine Glattrohrwaffe

Publications (2)

Publication Number Publication Date
EP0046888A1 true EP0046888A1 (fr) 1982-03-10
EP0046888B1 EP0046888B1 (fr) 1987-03-25

Family

ID=6110962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106024A Expired EP0046888B1 (fr) 1980-09-03 1981-07-31 Ceinture d'étanchéité pour munition de canons à âme lisse

Country Status (5)

Country Link
EP (1) EP0046888B1 (fr)
AT (1) ATE26178T1 (fr)
DE (1) DE3033042C2 (fr)
ES (1) ES8301362A1 (fr)
IL (1) IL63694A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552071A (en) * 1982-06-15 1985-11-12 United Technologies Corporation Two-piece despin obturator
FR2662241A1 (fr) * 1990-05-19 1991-11-22 Sauvestre Jean Claude Systeme de lancement tandem a etancheite centrale.
US6536353B1 (en) * 1998-04-24 2003-03-25 Rheinmetall W & M Gmbh Spin-stabilized projectile having a multi-part guide band and method of making the projectile
EP1717542A1 (fr) * 2005-04-27 2006-11-02 Rheinmetall Waffe Munition GmbH Procédé de modification d'une munition pour canon rayé en munition pour canon lisse
EP1996896A1 (fr) * 2006-03-14 2008-12-03 BAE Systems Bofors AB PROCÉDÉ GARANTISSANT UNE VITESSE INIHALE PRÉDÉTERMINÉE D'UN PROJECTILE D'ARTILLERIE ET PROJECTILES CONçUS SELON LEDIT PROCÉDÉ
KR101130304B1 (ko) * 2009-12-29 2012-03-22 (주)동진하이테크 산성계 바인더 수성 코팅제 조성물
WO2016001388A1 (fr) * 2014-07-03 2016-01-07 Rheinmetall Waffe Munition Gmbh Projectile d'artillerie avec bague d'étanchéité

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532745C2 (de) * 1995-09-05 1998-11-26 Rheinmetall Ind Ag Führungsband-Dichtsystem für ein drallstabilisiertes Geschoß
DE10338184B4 (de) * 2003-08-20 2007-02-08 Rheinmetall Waffe Munition Gmbh Mörsergranate
DE102004034756A1 (de) 2004-07-17 2006-02-02 Rheinmetall Waffe Munition Gmbh Artilleriegeschoss

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE247038C (fr) *
DE88196C (fr) * 1895-10-29
DE85386C (fr) *
DE580687C (de) * 1930-06-16 1933-07-17 Edgar William Brandt Abdichtung fuer Geschosse in Geschuetzrohren
US2057953A (en) * 1935-04-12 1936-10-20 American Armament Corp Mortar projectile
DE698998C (de) * 1937-01-20 1940-11-21 Waffen Und Munitionsfabriken A Geschoss fuer Waffen mit progressivem Drall
DE732950C (de) * 1939-05-12 1943-03-16 Ing Bohdan Pantoflicek Dichtungsring
GB586674A (en) * 1941-12-23 1947-03-27 Frederick Geoffrey Lees Johnso Improvements in or relating to projectiles having driving bands
FR1270551A (fr) * 1960-06-29 1961-09-01 Hotchkiss Brandt Projectile perfectionné pour mortier à âme lisse
FR2334084A1 (fr) * 1975-12-02 1977-07-01 Thomson Brandt Ceinture d'etancheite aux gaz de lancement et projectile equipe d'une telle ceinture

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE247038C (fr) *
DE85386C (fr) *
DE88196C (fr) * 1895-10-29
DE580687C (de) * 1930-06-16 1933-07-17 Edgar William Brandt Abdichtung fuer Geschosse in Geschuetzrohren
US2057953A (en) * 1935-04-12 1936-10-20 American Armament Corp Mortar projectile
DE698998C (de) * 1937-01-20 1940-11-21 Waffen Und Munitionsfabriken A Geschoss fuer Waffen mit progressivem Drall
DE732950C (de) * 1939-05-12 1943-03-16 Ing Bohdan Pantoflicek Dichtungsring
GB586674A (en) * 1941-12-23 1947-03-27 Frederick Geoffrey Lees Johnso Improvements in or relating to projectiles having driving bands
FR1270551A (fr) * 1960-06-29 1961-09-01 Hotchkiss Brandt Projectile perfectionné pour mortier à âme lisse
FR2334084A1 (fr) * 1975-12-02 1977-07-01 Thomson Brandt Ceinture d'etancheite aux gaz de lancement et projectile equipe d'une telle ceinture

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552071A (en) * 1982-06-15 1985-11-12 United Technologies Corporation Two-piece despin obturator
FR2662241A1 (fr) * 1990-05-19 1991-11-22 Sauvestre Jean Claude Systeme de lancement tandem a etancheite centrale.
WO1991018256A1 (fr) * 1990-05-19 1991-11-28 Sauvestre Jean Claude Systeme de lancement tandem a etancheite centrale
US6536353B1 (en) * 1998-04-24 2003-03-25 Rheinmetall W & M Gmbh Spin-stabilized projectile having a multi-part guide band and method of making the projectile
US6827020B2 (en) * 1998-04-24 2004-12-07 Rheinmetall W & M Gmbh Spin-stabilized projectile having a multi-part guide band and method of making the projectile
EP1717542A1 (fr) * 2005-04-27 2006-11-02 Rheinmetall Waffe Munition GmbH Procédé de modification d'une munition pour canon rayé en munition pour canon lisse
EP1996896A1 (fr) * 2006-03-14 2008-12-03 BAE Systems Bofors AB PROCÉDÉ GARANTISSANT UNE VITESSE INIHALE PRÉDÉTERMINÉE D'UN PROJECTILE D'ARTILLERIE ET PROJECTILES CONçUS SELON LEDIT PROCÉDÉ
EP1996896A4 (fr) * 2006-03-14 2012-08-22 Bae Systems Bofors Ab PROCÉDÉ GARANTISSANT UNE VITESSE INIHALE PRÉDÉTERMINÉE D'UN PROJECTILE D'ARTILLERIE ET PROJECTILES CONçUS SELON LEDIT PROCÉDÉ
KR101130304B1 (ko) * 2009-12-29 2012-03-22 (주)동진하이테크 산성계 바인더 수성 코팅제 조성물
WO2016001388A1 (fr) * 2014-07-03 2016-01-07 Rheinmetall Waffe Munition Gmbh Projectile d'artillerie avec bague d'étanchéité

Also Published As

Publication number Publication date
EP0046888B1 (fr) 1987-03-25
ATE26178T1 (de) 1987-04-15
ES504984A0 (es) 1982-12-01
DE3033042C2 (de) 1985-06-27
IL63694A (en) 1993-04-04
DE3033042A1 (de) 1982-05-06
ES8301362A1 (es) 1982-12-01

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