EP0578522B1 - Verschlusselement für ein Abschussrohr und ein mit diesem Verschlusselement versehenes Abschussrohr - Google Patents

Verschlusselement für ein Abschussrohr und ein mit diesem Verschlusselement versehenes Abschussrohr Download PDF

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Publication number
EP0578522B1
EP0578522B1 EP93401554A EP93401554A EP0578522B1 EP 0578522 B1 EP0578522 B1 EP 0578522B1 EP 93401554 A EP93401554 A EP 93401554A EP 93401554 A EP93401554 A EP 93401554A EP 0578522 B1 EP0578522 B1 EP 0578522B1
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EP
European Patent Office
Prior art keywords
cap
closure element
tube
storage
fixed
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
EP93401554A
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English (en)
French (fr)
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EP0578522A1 (de
Inventor
Jean-Pierre Breugnot
Jean-Paul Demay
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.)
Airbus Group SAS
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Airbus Group SAS
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Filing date
Publication date
Application filed by Airbus Group SAS filed Critical Airbus Group SAS
Publication of EP0578522A1 publication Critical patent/EP0578522A1/de
Application granted granted Critical
Publication of EP0578522B1 publication Critical patent/EP0578522B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
    • F41F3/00—Rocket or torpedo launchers
    • F41F3/04—Rocket or torpedo launchers for rockets
    • F41F3/077—Doors or covers for launching tubes

Definitions

  • the invention relates to sealing or sealing the ends of a launching tube, in mobile practice, for missiles, rockets or similar munitions.
  • hoods or shutter elements can be of several types, depending on whether their clearance from the end of the tube which they close off is done independently before firing (sometimes called doors) or at the very start of shoot.
  • the first case most often corresponds to heavy weapons in practice configured as a battery.
  • the document FR-2.620.808 which relates to missile containers notably on board warships
  • the document FR-2.555.725 concerning “containerized” missile systems on vehicles, on land or on vessel, provide hinged covers or doors.
  • the second case corresponds in practice to light weapons, for example carried and handled by his servant.
  • the release of the front end of the launch tube is then done by ejection or fragmentation of the closure element.
  • ejection or fragmentation results from the action of a pyrotechnic element or an explosive cord triggered at the time of the firing (see for example documents FR-2,555,725, US-4,301.
  • the object of the invention is to overcome the aforementioned drawbacks by means of a closure element for at least one of the ends, in particular the front, of a storage and launching tube for ammunition, preferably portable, which can, despite simple construction, ensuring in storage phase, in combination with the tube itself, a high and lasting level of protection over time climatic, mechanical, electromagnetic, nuclear, biological and / or chemical aggressions, while guaranteeing reliably, even after a long storage period (which can typically reach, or even exceed, 10 years), the complete release of said end under the effect of the pressure front appearing at the time of the firing, and this without uncontrolled ejection of debris or posing a risk to the servant of said tube.
  • the invention provides a closure element intended to be mounted on one end of a tube for storing and launching ammunition in order to protect the interior thereof from external aggressions, comprising a cover intended to extend over the entire section of the tube end and to be tightly secured all along the edge of this tube end and to disengage at least partially from this end at the time of launching, characterized in that this cover is fixed inside a protective cover made of flexible material comprising a retaining tab fixed externally to the tube near this end, whereby the cover is recovered at the time of launching by the protective cover .
  • the cover when the cover is detached at least in part from the end of the tube, it is, in its entirety, retained in the tube in particular thanks to the tab of the protective cap. There is therefore no uncontrolled ejection of debris.
  • the cover is in practice made of rigid material so as to ensure the desired level of protection, in particular mechanical, while the protective cover can provide sound and visual protection of this cover (that is to say can be used to absorb any incidental sound or light wave whose referral would betray the presence of the weapon). It will be appreciated that the invention goes against previous practice aimed at preserving a symmetry for fixing the cover relative to the axis of the tube.
  • the invention also relates to a launch tube provided at one, preferably at each, end of such a closure element.
  • the cover is also preferably electrically conductive, the connection between this wall (possibly stripped near the end) and the cover being advantageously made by an electrically conductive adhesive.
  • the closure element is preferably connected to the tube by an annular band to which the tab of the cap is connected while, at the rear end, the tab of the cap may be sufficient on its own. to secure the tube.
  • FIG. 1 shows an end 1A, preferably the front end, of a launch tube designated as a whole by the reference 1 and which is used for storing ammunition such as a missile, rocket or the like and then for launching it.
  • This tube in itself, with its ammunition (not shown), is of any suitable known type and will not be described in detail.
  • this tube preferably portable, is formed at its front end of an electrically conductive cylindrical strip 2 of axis XX, surrounded by an external wall 3.
  • the strip is in copper and the outer wall is a winding of carbon fibers.
  • the outer wall advantageously stops at a short distance from the edge or free edge of the strip so as to leave it naked over this short distance.
  • the copper strip takes part in particular in the mechanical resistance of the tube and in its electromagnetic shielding.
  • a closure element designated as a whole by the reference 4 On this end 1A of the tube is mounted a closure element designated as a whole by the reference 4, and formed by a cover 5 and a protective cap 6 made of flexible material.
  • the cover 5, intended for sealingly sealing the section of the end 1A, has a bottom wall 7, in practice flat, extending over this entire section and is tightly secured all along the edge of this end thanks to a skirt 8, here cylindrical, intended to extend outwardly from the end of the tube, preferably over all or part of the distance d over which the metal strip 2 is left bare.
  • This cover is advantageously obtained by stamping.
  • This cover is preferably electrically conductive (here copper), like the strip, so as to allow an electromagnetic continuity tube-seal.
  • connection of the cover to the tube is preferably ensured by this skirt, by crimping, bonding or welding.
  • this connection is ensured by advantageously conductive adhesive so as to reinforce the aforementioned electromagnetic continuity.
  • the existence of this skirt allows very good mechanical fixing and good sealing.
  • This cover 5 is fixed inside the protective cap 6, preferably by its single bottom wall, which makes it possible to prevent the fixing material, for example glue (advantageously hot-melt), from overflowing onto the tube itself.
  • the fixing material for example glue (advantageously hot-melt)
  • This cap 6 also has a bottom wall 9 connected at its periphery to a cylindrical skirt 10 running along the skirt 8 of the cover, preferably over a distance at least equal to the axial dimension of the skirt 8 of the cover so to mark it well and extend around the tube itself.
  • a bottom wall 9 connected at its periphery to a cylindrical skirt 10 running along the skirt 8 of the cover, preferably over a distance at least equal to the axial dimension of the skirt 8 of the cover so to mark it well and extend around the tube itself.
  • This skirt 10 is extended axially opposite the bottom wall 9 by a fixing lug 11 fixed externally to the tube at a distance from this end.
  • this tab extends circumferentially so as to form an annular band 12 intended to surround the tube beyond the stripped zone.
  • this annular band circumferentially runs along the skirt 10 so as to be separated from it only by a slot 13 extending over an angular sector less than 360 ° so as to leave the tab 11 on an angular amplitude (by example between 20 ° and 50 °, preferably 40 °) sufficient to allow the tab 11 to resist tearing during ejection of the cover.
  • This slot does not need to be complete, that is to say it can extend over only part of the thickness of the assembly 10 + 12, or be dotted as long as it determines an unclosed line of less resistance (for example of lesser thickness).
  • the protective cap 6 is here fixed to the tube by gluing along the annular strip, for example by the same hot-melt adhesive as that used to fix the bottom walls of the cover and the cap.
  • FIG. 2 represents this cap 6 with pre-gluing layers 14 and 15.
  • This cap is preferably made of a heat-shrinkable material, polyethylene for example.
  • Figures 3 and 4 show another cap 16 for receiving a cover (not shown) of the same type as that, 5, of Figure 1.
  • the closure element thus formed, in particular usable for the rear end of the tube 1, does not differ from that of FIG. 1 only by the fact that the bottom wall 19 and the skirt 20 of the cap are connected to the tube by a single tab 21, of constant circumferential dimension as is clear from FIG. 4.
  • Pre-gluing zones are designated in FIG. 3 by references 24 and 25.
  • the tab is advantageously non-retractable.
  • a pressure constraint can be applied radially to the tube-seal junction, for example thanks to the retraction of the cap, which avoids having to maneuver the bonding tool.
  • Operation d can be performed in a time relatively short (30 seconds for example).
  • the succession of steps is modified as follows: before mounting the cap on the cover, it is heated in an oven for for example 10 min at 100 ° C; after placement on the cover and on the tube, the polyethylene is allowed to retract in the open air, with prepolymerization of the conductive adhesive.
  • a final treatment is then carried out, completing the polymerization of the conductive adhesive.
  • the cap is made of polyethylene supplied by RAYCHEM in Denmark, or by HELLERMAN in England; the tooling is obtained after from WATLOW France (in Pontoise) which imports it from Germany (Company WAHOW, RFA) while the conductive adhesive, for example, based on silver particles is obtained from RAYCHEM under the reference SS 1184 or from CHOMERICS under the reference CHO-BOND 584-29; the hot-melt adhesive is obtained from RAYCHEM under the reference S 1112 or from HELLERMANN under the reference WM 250.
  • the cover has for example a thickness of 0.1 mm and a final diameter of 168 mm and a skirt height of 6 mm.
  • the cap of FIG. 2 has a thickness of 1.5 mm, a shrinkage temperature less than or equal to 150 ° and a skirt height of 20 mm, that is to say greater than the above-mentioned height of the skirt.
  • the cover; the annular band has a height of 30 mm.
  • the slot 13 is located below the free edge of the skirt of the cover, preferably opposite the layer 3 protecting the strip 2.
  • the mass of the front and rear elements of the tube is typically at most 100 g.
  • Such a sealing element resisted in particular dry heat (+ 71 ° C), cold (-46 ° C), corrosion in particular by caustic soda (2% aqueous solution), by boric acid (1.7% aqueous solution) or by concentrated freon.
  • the (conventional) tube is fitted with its accessories allowing the shooting (trigger, viewfinder, etc.).
  • the missile stack and the gyroscopes are activated, the launching device of the gyroscopes creates an overpressure in the launching tube.
  • the front and rear covers resist this overpressure.
  • the ignition of the launching propellants generates a pressure wave, part of which is reflected by the rear cover, allowing the front cover to be broken, which is recovered by its protective cap, the latter remaining linked to the launching tube.
  • the rear cover resists a rise in pressure before being broken and recovered by its protective cap, the assembly remaining inside the safety cone.
  • the rupture of the cover at the bottom wall is here guaranteed by the fact that the cover is obtained by stamping: the connection between the bottom wall and the skirt is an area of least resistance, typically fragile, typically represented by a radius of 0.1 mm.
  • an annular line of least resistance intended to be broken during launching, can be obtained by any suitable known means (dashed lines, notch, etc.) which does not harm the desired level of protection.
  • the cap swings around the tab which forms a hinge.
  • the retention of the cover by the tab is improved by the fact that, not being linked to the cover, the skirt of the cover can participate by its deformation, in the absorption of the ejection energy.
  • the angular position of this tab is chosen so that, after rupture, the cover and the cap do not interfere with the sighting means or the guide means associated with the tube.
  • the front closure element has a breaking strength typically between 1 bar and 1.5 bar while that of the rear element is typically between 1.5 bar and 3.5 bar.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
  • Battery Mounting, Suspending (AREA)
  • Pipe Accessories (AREA)

Claims (26)

  1. Verschlußelement, das dazu bestimmt ist, auf einem Ende eines Rohrs zur Lagerung und zum Abschuß von Munition angebracht zu werden, um dessen Inneres vor äußeren Angriffen zu schützen, aufweisend ein Innenhütchen (5), das dazu bestimmt ist, sich auf dem ganzen Querschnitt des Rohrendes zu erstrecken und auf der ganzen Länge des Rands dieses Rohrendes abdichtend befestigt zu werden und sich im Moment des Abschusses zumindest teilweise von diesem Ende zu lösen, dadurch gekennzeichnet, daß dieses Innenhütchen im Inneren einer Schutzkappe (6, 16) aus einem biegsamen Material befestigt ist, welche eine Lasche (11, 21) zum Zurückhalten aufweist, die außen am Rohr in der Nähe dieses Endes befestigt ist und durch die das Innenhütchen im Moment des Abschusses durch die Schutzkappe zurückgeholt wird.
  2. Verschlußelement nach Anspruch 1, dadurch gekennzeichnet, daß das Innenhütchen (5) eine Bodenwand (7) und einen Mantel (8) aufweist, welcher dazu bestimmt ist, sich außen entlang dem Ende (1A) des Rohrs zu erstrecken und an ihm befestigt zu werden.
  3. Verschlußelement nach Anspruch 2, dadurch gekennzeichnet, daß das Innenhütchen zwischen dieser Bodenwand und diesem Mantel eine ringförmige Zone geringeren Widerstands aufweist.
  4. Verschlußelement nach Anspruch 3, dadurch gekennzeichnet, daß diese ringförmige Zone geringeren Widerstands eine rechtwinklige Verbindungszone ist, die durch einen Zugvorgang zwischen dem Mantel und der Bodenwand hergestellt ist.
  5. Verschlußelement nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß das Innenhütchen (5) an der Schutzkappe (6, 16) durch seine einzige Bodenwand (7) befestigt ist.
  6. Verschlußelement nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Innenhütchen durch Klebstoff an der Schutzkappe befestigt ist.
  7. Verschlußelement nach Anspruch 6, dadurch gekennzeichnet, daß dieser Klebstoff thermisch schmelzbar ist.
  8. Verschlußelement nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Befestigungslasche (11) mit einem ringförmigen Streifen (12) verbunden ist, der dazu bestimmt ist, das Rohrende zu umgeben.
  9. Verschlußelement nach Anspruch 8, dadurch gekennzeichnet, daß die Kappe umfangsseitig entlang diesem Streifen verläuft.
  10. Verschlußelement nach Anspruch 9, dadurch gekennzeichnet, daß die Kappe und der ringförmige Streifen zusätzlich zur Befestigungslasche durch streifenartige zonen verbunden sind.
  11. Verschlußelement nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß das biegsame Material der Schutzkappe thermisch zusammenziehbar ist.
  12. Verschlußelement nach Anspruch 11, dadurch gekennzeichnet, daß das biegsame Material Polyethylen ist.
  13. Verschlußelement nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß das Innenhütchen aus einem elektrisch leitenden Material ist.
  14. Verschlußelement nach Anspruch 13, dadurch gekennzeichnet, daß dieses elektrisch leitende Material auf Kupfer basiert.
  15. Rohr (1) zur Lagerung und zum Abschuß von Munition, das an mindestens einem (1A) seiner beiden Enden, d.h. am vorderen und/oder hinteren Ende, mit einem Verschlußelement (4) versehen ist, welches ein Innenhütchen (5) aufweist, das sich auf dem ganzen Querschnitt dieses Endes erstreckt und auf der ganzen Länge des Rands dieses Endes abdichtend befestigt ist, dadurch gekennzeichnet, daß dieses Innenhütchen im Inneren einer Schutzkappe (6, 16) aus einem biegsamen Material befestigt ist, die eine Lasche (11, 21) aufweist, welche außen am Rohr in der Nähe dieses Endes befestigt ist.
  16. Rohr zur Lagerung und zum Abschuß nach Anspruch 15, dadurch gekennzeichnet, daß das Innenhütchen (5) eine Bodenwand (7) und einen Mantel (8) aufweist, welcher sich außen entlang dem Ende des Rohrs erstreckt, wobei er auf ihm befestigt ist.
  17. Rohr zur Lagerung und zum Abschuß nach Anspruch 16, dadurch gekennzeichnet, daß das Innenhütchen an der Schutzkappe durch seine einzige Bodenwand befestigt ist.
  18. Rohr zur Lagerung und zum Abschuß nach einem der Ansprüche 15 bis 17, dadurch gekennzeichnet, daß dieses Ende eine elektrisch leitende Wand aufweist, daß das Innenhütchen aus einem elektrisch leitenden Material ist und an dieser Wand durch einen elektrisch leitenden Klebstoff befestigt ist.
  19. Rohr zur Lagerung und zum Abschuß nach Anspruch 18, dadurch gekennzeichnet, daß das Innenhütchen auf Kupfer basiert.
  20. Rohr zur Lagerung und zum Abschuß nach einem der Ansprüche 15 bis 19, dadurch gekennzeichnet, daß das Innenhütchen an der Schutzkappe durch einen thermisch schmelzbaren Klebstoff befestigt ist.
  21. Rohr zur Lagerung und zum Abschuß nach einem der Ansprüche 15 bis 20, dadurch gekennzeichnet, daß dieses Ende das vordere Ende des Rohrs ist, wobei die Befestigungslasche mit einem ringförmigen Streifen, der dieses Ende umgibt, verbunden ist.
  22. Rohr zur Lagerung und zum Abschuß nach Anspruch 21, dadurch gekennzeichnet, daß die Kappe sich umfangsseitig entlang diesem Streifen erstreckt.
  23. Rohr zur Lagerung und zum Abschuß nach Anspruch 22, dadurch gekennzeichnet, daß die Kappe und der ringförmige Streifen zusätzlich zur Befestigungslasche durch streifenartige Zonen befestigt sind.
  24. Rohr zur Lagerung und zum Abschießen nach einem der Ansprüche 15 bis 23, dadurch gekennzeichnet, daß das biegsame Material der Schutzkappe thermisch zusammenziehbar ist.
  25. Rohr zur Lagerung und zum Abschuß nach einem der Ansprüche 15 bis 24, dadurch gekennzeichnet, daß das biegsame Material Polyethylen ist.
  26. Rohr zur Lagerung und zum Abschuß nach einem der Ansprüche 15 bis 25, dadurch gekennzeichnet, daß es an seinem anderen Ende ein zweites Verschlußelement aufweist, welches ein Innenhütchen aufweist, das auf der gesamten Länge des Rands dieses anderen Endes abdichtend befestigt ist und im Inneren einer zweiten Schutzkappe aus einem biegsamen Material befestigt ist, die eine außen am Rohr in der Nähe dieses Endes befestigte Lasche aufweist.
EP93401554A 1992-06-26 1993-06-17 Verschlusselement für ein Abschussrohr und ein mit diesem Verschlusselement versehenes Abschussrohr Expired - Lifetime EP0578522B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9207905A FR2692973B1 (fr) 1992-06-26 1992-06-26 Elément d'obturation pour tube de lancement de munition et tube de lancement le comportant.
FR9207905 1992-06-26

Publications (2)

Publication Number Publication Date
EP0578522A1 EP0578522A1 (de) 1994-01-12
EP0578522B1 true EP0578522B1 (de) 1997-09-03

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EP93401554A Expired - Lifetime EP0578522B1 (de) 1992-06-26 1993-06-17 Verschlusselement für ein Abschussrohr und ein mit diesem Verschlusselement versehenes Abschussrohr

Country Status (7)

Country Link
US (1) US5375503A (de)
EP (1) EP0578522B1 (de)
CA (1) CA2098904A1 (de)
DE (1) DE69313542T2 (de)
ES (1) ES2106988T3 (de)
FR (1) FR2692973B1 (de)
NO (1) NO303411B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2754049B1 (fr) * 1996-10-01 1998-12-18 Ruggieri Dispositif de lancement d'engins autopropulses
US5993921A (en) * 1997-03-27 1999-11-30 Lockheed Martin Corporation Device and method for sealing a munition within a canister until munition launch
DE19726937C1 (de) * 1997-06-25 1998-09-17 Daimler Benz Aerospace Ag Startrohr mit darin angeordnetem Flugkörper
US7520204B2 (en) * 2004-10-28 2009-04-21 Lockheed Martin Corporation Article comprising a composite cover
US8256340B2 (en) * 2005-03-04 2012-09-04 Lockheed Martin Corporation Article comprising a missile canister cover
DE602007012119D1 (de) * 2007-11-14 2011-03-03 Saab Ab Schutzabdeckung für ein Abschussrohr
US10240896B2 (en) * 2015-03-12 2019-03-26 Raytheon Company Tube to bulkhead bonded joint design

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DE809156C (de) * 1944-11-30 1951-07-23 Schermuly Pistol Rocket Appara Abschussvorrichtung mit Rakete
GB933957A (en) * 1959-07-23 1963-08-14 Dunlop Rubber Co Improvements relating to ballistic missiles
BE670538A (de) * 1965-10-06 1966-02-16
SE407285B (sv) * 1975-08-25 1979-03-19 Bofors Ab Anordning for att automatiskt avlegsna tetningslock for avskjutningsroret till en missil
DE2639719C3 (de) * 1976-09-03 1980-05-22 Diehl Gmbh & Co, 8500 Nuernberg Mündungsdeckel aus Kunststoff zum Verschließen eines Waffenrohres
US4263835A (en) * 1979-02-28 1981-04-28 The United States Of America As Represented By The Secretary Of The Navy Sonobuoy launcher system
CH644447A5 (de) * 1980-04-22 1984-07-31 Oerlikon Buehrle Ag Leuchtrakete mit zylindrischem behaelter.
US4471684A (en) * 1981-09-14 1984-09-18 Fmc Corporation Transom missile launcher module
US4455917A (en) * 1982-03-15 1984-06-26 General Dynamics, Pomona Division Shock wave end cap removal device
US4498368A (en) * 1983-10-06 1985-02-12 The United States Of America As Representedby The Secretary Of The Navy Frangible fly through diaphragm for missile launch canister
GB8811983D0 (en) * 1988-05-20 1988-12-14 British Aerospace Anti-ice protection for projectiles
FR2637065B1 (fr) * 1988-09-02 1993-10-15 Thomson Brandt Armements Enveloppe protectrice de munitions comportant des moyens permettant sa decoupe
DE3940468A1 (de) * 1989-12-07 1991-06-13 Telefunken Systemtechnik Kappe fuer eine raketenaustrittsoeffnung

Also Published As

Publication number Publication date
DE69313542D1 (de) 1997-10-09
FR2692973A1 (fr) 1993-12-31
DE69313542T2 (de) 1998-01-15
EP0578522A1 (de) 1994-01-12
ES2106988T3 (es) 1997-11-16
NO932346D0 (no) 1993-06-25
NO303411B1 (no) 1998-07-06
CA2098904A1 (en) 1993-12-27
NO932346L (no) 1993-12-27
US5375503A (en) 1994-12-27
FR2692973B1 (fr) 1994-10-14

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