EP0048204B1 - Patrone mit pyrotechnisch betätigter Nutzladung und mit Sicherheitseinrichtungen - Google Patents

Patrone mit pyrotechnisch betätigter Nutzladung und mit Sicherheitseinrichtungen Download PDF

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Publication number
EP0048204B1
EP0048204B1 EP81401413A EP81401413A EP0048204B1 EP 0048204 B1 EP0048204 B1 EP 0048204B1 EP 81401413 A EP81401413 A EP 81401413A EP 81401413 A EP81401413 A EP 81401413A EP 0048204 B1 EP0048204 B1 EP 0048204B1
Authority
EP
European Patent Office
Prior art keywords
fact
projectile
block
pyrotechnic
charge
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
Application number
EP81401413A
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English (en)
French (fr)
Other versions
EP0048204A1 (de
Inventor
Alain André Aristide Billard
Hubert Claude Gilles Calmettes
Roland Claude Encoyand
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.)
E LACROIX - TOUS ARTIFICES Ste
Original Assignee
E LACROIX - TOUS ARTIFICES Ste
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Filing date
Publication date
Application filed by E LACROIX - TOUS ARTIFICES Ste filed Critical E LACROIX - TOUS ARTIFICES Ste
Priority to AT81401413T priority Critical patent/ATE10136T1/de
Publication of EP0048204A1 publication Critical patent/EP0048204A1/de
Application granted granted Critical
Publication of EP0048204B1 publication Critical patent/EP0048204B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/28—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
    • F42C15/31—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids generated by the combustion of a pyrotechnic or explosive charge within the fuze
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/18—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved
    • F42C15/184—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a slidable carrier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/24—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means

Definitions

  • the present invention relates to the security of ammunition.
  • a cartridge is very often used comprising a tube, the socket bottom of which houses a pyrotechnic ejection charge. And the projectile placed in front of the ejection charge is in turn provided with a delay pyrotechnic chain; initiated by the ejection charge, this will finally ignite after leaving the tube the charge for implementing the projectile.
  • US-A-2 118 062 also describes a safety rocket implementing a slide which a stop retains in a position of rupture of the pyrotechnic chain, between a primary detonator and an auxiliary charge; under the effect of the acceleration of the projectile, this stop disappears and the drawer then aligns a detonator with the primary detonator and the auxiliary charge, to establish the continuity of the pyrotechnic chain.
  • FR-A-672 710 describes a rocket safety system using a shutter which closes a fire transmission channel and the pressure of the combustion gases of a charge drives out, if necessary by means of a hammer, to open the channel and thereby allow the fire of a primer to be transmitted to the charge of the projectile.
  • the present invention proposes a particularly satisfactory solution, which is based on simple means, and gives complete satisfaction, by envisaging, in addition to the aforementioned chain break drawer, double security produced by entirely separate parts, and operating following radically different principles.
  • the aforementioned drawer is immobilized in the chain breaking position by a stop, axially retained until a force of predetermined intensity, and secured to a counterweight, which eclipses it under the effect of the acceleration due to the start of the coup.
  • the pyrotechnic chain further comprises another chain break, ensured by the interposition of a shutter block, the latter also being held axially under a predetermined effort, and capable of being driven out by the pressure of the combustion gases.
  • this other chain break is placed between the ejection charge and the start of the delay pyrotechnic chain.
  • the block which slides in a bore, has a shoulder housing an O-ring larger than the bore, and abutting thereon, in the position where the block ensures the chain breaks, while the gas pressure forces the passage of the block with its seal in the bore.
  • the stop is advantageously maintained in the immobilization position of the drawer by a toothed washer or a veil capable of yielding under a predetermined force.
  • the pressure of the gases on the shutter block displaces the latter axially, in the opposite direction to the axial movement of the counterweight due to the acceleration at the start of the stroke.
  • the cartridge illustrated in FIGS. 1 and 2 comprises a tube 1, integral with a socket bottom 2, which houses a pyrotechnic ejection charge 4, capable of being excited by an electrical primer 3. Passing through the holes d 'a spangle 5, the gases released by the ejection charge 4 will propel a projectile generally designated by the reference 10, this projectile leaving when the cap 6 placed at the other end is released, and retained by crimping formed at the end of the tube 1.
  • the projectile 10 comprises in the upper part an envelope defined by a disc 12 and a cylinder 11, this envelope being fixed by a screw 14 on the central shaft 13, which in turn comes in the lower part to receive a screw 15 fixing it on the part 16, perforated in particular in 17. Between the end walls 12 and 17 can be formed any charge, for example an illuminating bar, which will be ignited by gases released by an implementation charge 72, and passing through the orifices 17.
  • the plate 16 is in turn fixed to the base of the projectile, which is designated by the general reference 20, and can be made up of one or more integral parts.
  • this base comprises in the middle part a sliding drawer, designated by 50.
  • This drawer is provided with bores in which are pressed outwards pins 53 and 54, coming to bear on the wall external of the part 20.
  • the drawer 50 has a rod 56, projecting outwards, until passing through an orifice 57 formed in the part 20, to finally come to bear on the tube 1 It is immediately seen that when the projectile has left the tube, the drawer 50 will move to the left of FIG. 4 to come into abutment on the wall 20. This therefore results in the orifice 52 coming into alignment position , and thus allows a fire transmission between the relay load 51 of FIG. 5 and the implementation load 72 already mentioned, through a thin web 71.
  • the gases released by the ejection charge will then not only be able to eject the projectile, but also ignite a pyrotechnic charge 40 forming a delay relay.
  • This load 40 is placed in a radial bore, terminating on the side of the bore 35 housing the obturator block 31. And this radial bore comes to an axial orifice, allowing access to another load forming a transmission relay of fire 51.
  • the radial bore which houses the part 40 extends to the opposite end of the block 20, by another bore 41.
  • the main purpose of this is to allow the composition to be put in place. delay 41, as well as its settlement.
  • the bore 41 is closed by a piston 42 secured to a head 43 with the interposition of a seal.
  • the relay load 51 is located immediately below the sliding drawer 50, and it will therefore be able to ensure the continued transmission of fire, provided that the drawer 50 has meanwhile been able to move, the projectile having come out of the tube, in order to bring the orifice 52 in the axial position. It will be noted that in reality the ignition of the relay composition 51 can be done at the desired time, since it is placed after the delay charge 40.
  • a stop 61 is placed projecting into the housing of the drawer 50 in order to immobilize the latter in the broken chain position.
  • the counterweight 61 is retained in position blocking the drawer by a washer 62, which is a toothed washer as can be seen better in FIG. 5A.
  • This toothed washer will open when the force applied to it by the stop 61 reaches a predetermined threshold, and therefore when the acceleration communicated to all the parts 61 and 63 reaches a predetermined value.
  • the ejection charge 4 begins to burn, and produces a strong gas evolution in the chamber 25.
  • the obturator block 31 of FIG. 3 will be moved towards the top, in order to allow the ignition of the delay charge 40, which will burn for a preset time, for example equal to 5/100 seconds.
  • the projectile 10 begins to move. Its acceleration very quickly reaches a very large value, sufficient to move the stop against the toothed washer 62, and consequently free the drawer. As soon as it leaves the mouth, the slide will therefore be able to move to the axial position, and authorize the communication of fire between the relay load 51 and the processing load 72.
  • the pyrotechnic delay 40 will arrive at the end of combustion and ignite the relay load 51, which will now communicate the fire to the implementation load 72. In turn, this will not only ensure the stripping the payload of the cartridge, but also igniting the lighting bread or the similar charge that it can contain.
  • the load according to the invention has very high security. This security also intervenes at the level of violent shocks undergone by the cartridge, because the displacement of the shutter block 31 occurs axially, but in the opposite direction to the axial movement required for the counterweight 63 in order to ensure the transmission of fire. As a result, a violent vertical shock can at most only move one of the two elements, but not both. On the other hand, these members are placed in the vicinity of axial planes of the cartridge which are perpendicular to each other.
  • the O-ring 33 of FIG. 3 is a silicone seal for low temperature, which has the advantage of ensuring good blocking of the shutter block when the latter does not move. This results in almost irreversibility of the movement of the shutter block 31, except of course under the effect of strong accelerations which can occur during the start of the stroke.
  • the cartridge according to the present invention advantageously applies as an infrared decoy for aircraft, because it allows excellent security, even if the delay 40 is very short, so as to ensure deployment of the infrared decoy very soon after the projectile has left the aircraft, condition that the skilled person will recognize as very useful.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Emergency Lowering Means (AREA)
  • Burglar Alarm Systems (AREA)
  • Secondary Cells (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
  • Vibration Dampers (AREA)
  • Dental Preparations (AREA)
  • Glass Compositions (AREA)

Claims (6)

1. Patrone mit pyrotechnisch betätigter Nutzladung, bestehend aus einem Rohr (1), welches mit dem Boden einer eine pyrotechnische Abschlußladung (4) aufnehmenden Hülse (2) verbunden ist, und vor dieser Abschlußladung, aus einem Projektil (10) mit einer pyrotechnischen verzögernden Kette, welche durch die Ausstoßladung ausgelöst wird, um nach Ausstoß aus dem Rohr die Ladung (72) zum Einsetzen des Projektils zu zünden, und in welcher diese pyrotechnische Ladung im Niveau von einem quer beweglichen Schieber (50) unterbrochen ist, welcher nur nach Ausstoß des Projektils aus dem Rohr in seine das Feuer übertragende Stellung geht, und in welcher der Schieber (50) durch einen Anschlag (61) in einer die pyrotechnische Kette unterbrechenden Stellung unbeweglich gehalten ist, dadurch gekennzeichnet, daß dieser Anschlag bis zu einer Kraft von vorgegebener Stärke axial gehalten ist und mit einem Sockel (63) verbunden ist, welcher ihn unter der Wirkung der Beschleunigung zu Beginn des Abschusses entfernt, und daß die pyrotechnische Kette eine weitere Kettenunterbrechung (30) aufweist, welche durch Zwischenschieben eines Verschlußblockes (31) sichergestellt ist, der gleichfalls unter der Wirkung einer vorgegebenen Kraft axial gehalten ist und durch den Druck von Verbrennungsgasen ausgeworfen werden kann.
2. Patrone nach Anspruch 1, dadurch gekennzeichnet, daß die weitere Kettenunterbrechung (30) zwischen der Ausstoßladung (4) und dem Beginn der pyrotechnischen verzögernden Kette (40) angeordnet ist.
3. Patrone nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Block (31), welcher in einer Bohrung (35) verschiebbar ist, eine Schulter (32) mit einer ringförmigen Dichtung (33) trägt, welche größer ist als die Bohrung (35) und gegen diese in der Stellung zum Anschlag kommt, in welcher der Block die Unterbrechung der Kette sicherstellt, bis der Gasdruck den Eintritt des Blockes (31) mit seinem Anschlußstück in die Bohrung (35) erzwingt.
4. Patrone nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Anschlag durch eine Zahnscheibe (62) in einer Stellung gehalten wird, in welcher der Schieber (50) unbeweglich ist, welche Zahnscheibe unter einer vorgegebenen Kraft nachgebend ausgebildet ist.
5. Patrone nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Gasdruck auf den Verschlußblock (31) diesen axial im entgegengesetzten Sinn zur axialen Bewegung des Sockels auf Grund der Beschleunigung zu Beginn des Schusses versetzt.
6. Patrone nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Sockel (63) und der Verschlußblock (31) in der Nähe jeweiligen axialen Ebenen angeordnet sind, die zueinander senkrecht sind.
EP81401413A 1980-09-12 1981-09-11 Patrone mit pyrotechnisch betätigter Nutzladung und mit Sicherheitseinrichtungen Expired EP0048204B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81401413T ATE10136T1 (de) 1980-09-12 1981-09-11 Patrone mit pyrotechnisch betaetigter nutzladung und mit sicherheitseinrichtungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8019720 1980-09-12
FR8019720A FR2490333B1 (fr) 1980-09-12 1980-09-12 Cartouche a actionnement pyrotechnique de charge utile avec securite

Publications (2)

Publication Number Publication Date
EP0048204A1 EP0048204A1 (de) 1982-03-24
EP0048204B1 true EP0048204B1 (de) 1984-10-31

Family

ID=9245878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401413A Expired EP0048204B1 (de) 1980-09-12 1981-09-11 Patrone mit pyrotechnisch betätigter Nutzladung und mit Sicherheitseinrichtungen

Country Status (8)

Country Link
US (1) US4454816A (de)
EP (1) EP0048204B1 (de)
AT (1) ATE10136T1 (de)
CA (1) CA1170108A (de)
DE (1) DE3166985D1 (de)
ES (1) ES8206840A1 (de)
FR (1) FR2490333B1 (de)
NO (1) NO150578C (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919001A1 (de) * 1999-04-27 2000-11-09 Junghans Gmbh Geb Pyrotechnischer Selbstzerleger für Munition
CN108007278A (zh) * 2017-12-17 2018-05-08 青岛万祥如光机械技术研究有限公司 一种防止错误燃放烟花的装置

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US4391754A (en) * 1980-07-29 1983-07-05 Imperial Chemical Industries Plc Anthraquinone compounds
FR2507304A1 (fr) * 1981-06-03 1982-12-10 Lacroix E Dispositif lance-leurre infrarouge a mise en oeuvre rapide avec double securite
ATE23222T1 (de) * 1982-09-16 1986-11-15 Inventa Ag Vorrichtung zum sichern und schaerfen eines elektrisch zuendbaren munitionskoerpers.
DE3339745C2 (de) * 1983-11-03 1986-10-02 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Adaptionspatrone für Einsteckrohrsystem
US4646644A (en) * 1984-04-09 1987-03-03 Sanders Associates, Inc. Pneumatic time delay valve
US4549486A (en) * 1984-05-25 1985-10-29 The United States Of America As Represented By The Secretary Of The Army Smoke canister
US5092244A (en) * 1984-07-11 1992-03-03 American Cyanamid Company Radar- and infrared-detectable structural simulation decoy
FR2592475B1 (fr) * 1985-12-27 1989-11-03 Lacroix E Tous Artifices Charge a actionnement pyrotechnique et munition incorporant celle-ci.
US4982663A (en) * 1986-05-16 1991-01-08 Aai Corporation Safe-and-arm arrangement and projectile arrangement therewith
FR2672978B1 (fr) * 1991-02-18 1993-06-18 Lacroix E Tous Artifices Lanceur de munitions.
US5129323A (en) * 1991-05-24 1992-07-14 American Cyanamid Company Radar-and infrared detectable structural simulation decoy
FR2702273B1 (fr) * 1993-03-05 1995-06-02 Lacroix E Tous Artifices Tête pyrotechnique à moyens de dispersion perfectionnés.
US5834682A (en) * 1995-02-03 1998-11-10 Warren; Cyrus E. Radar signal cartridge
US5763818A (en) * 1995-06-30 1998-06-09 Thiokol Corporation Illuminant igniter pellet ignition system for use in a decoy flare
JP2003529035A (ja) * 1999-07-22 2003-09-30 アライアント・テクシステムズ・インコーポレーテッド パラシュートの展開によって作動する点火装置組立体及びそれを含む照明弾
AUPQ413299A0 (en) * 1999-11-18 1999-12-09 Metal Storm Limited Forming temporary airborne images
DK174402B1 (da) * 2000-05-09 2003-02-10 Gn Netcom As Kommunikationsenhed
US7726243B2 (en) * 2006-11-14 2010-06-01 Alliant Techsystems Inc. Igniter safe and arm, igniter assembly and flare so equipped and method of providing a safety for an igniter assembly
FR2981443B1 (fr) * 2011-10-17 2013-11-29 Sme Generateur de gaz muni d'un organe de securite pour les cas d'echauffements lents
US9903695B1 (en) * 2012-02-06 2018-02-27 Schlumberger Technology Corporation Method and device for initiating an explosive train
US8776691B2 (en) * 2012-06-04 2014-07-15 Csi-Penn Arms, Llc Launched smoke grenade
CN103115530B (zh) * 2013-03-15 2014-11-26 南通天地通网络工程有限公司 无线遥控的弹射式电子礼花爆竹
FR3018112B1 (fr) * 2014-03-03 2018-04-20 Etienne Lacroix Tous Artifices S.A. Cartouche de leurrage pour aeronefs
US9829288B2 (en) 2015-09-17 2017-11-28 Orbital Atk, Inc. Retention clips for safety mechanisms of illumination flares and safety mechanisms
JP6563773B2 (ja) * 2015-10-20 2019-08-21 株式会社ダイセル 煙幕発生器

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919001A1 (de) * 1999-04-27 2000-11-09 Junghans Gmbh Geb Pyrotechnischer Selbstzerleger für Munition
CN108007278A (zh) * 2017-12-17 2018-05-08 青岛万祥如光机械技术研究有限公司 一种防止错误燃放烟花的装置

Also Published As

Publication number Publication date
ES506039A0 (es) 1982-08-16
DE3166985D1 (en) 1984-12-06
ATE10136T1 (de) 1984-11-15
CA1170108A (en) 1984-07-03
ES8206840A1 (es) 1982-08-16
NO150578C (no) 1984-11-07
FR2490333B1 (fr) 1986-05-02
NO812979L (no) 1982-03-15
EP0048204A1 (de) 1982-03-24
FR2490333A1 (fr) 1982-03-19
US4454816A (en) 1984-06-19
NO150578B (no) 1984-07-30

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