EP1695024B1 - Mit trennbaren teilen versehene pyrotechnische verbindung und mindestens solch eine verbindung umfassende startvorrichtung - Google Patents

Mit trennbaren teilen versehene pyrotechnische verbindung und mindestens solch eine verbindung umfassende startvorrichtung Download PDF

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Publication number
EP1695024B1
EP1695024B1 EP04805787.1A EP04805787A EP1695024B1 EP 1695024 B1 EP1695024 B1 EP 1695024B1 EP 04805787 A EP04805787 A EP 04805787A EP 1695024 B1 EP1695024 B1 EP 1695024B1
Authority
EP
European Patent Office
Prior art keywords
pyrotechnic
main structure
connector
weakened section
parts
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.)
Ceased
Application number
EP04805787.1A
Other languages
English (en)
French (fr)
Other versions
EP1695024A1 (de
Inventor
Guy Bonnet
Jean Langlois
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.)
ArianeGroup SAS
Original Assignee
Airbus Defence and Space SAS
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Filing date
Publication date
Application filed by Airbus Defence and Space SAS filed Critical Airbus Defence and Space SAS
Publication of EP1695024A1 publication Critical patent/EP1695024A1/de
Application granted granted Critical
Publication of EP1695024B1 publication Critical patent/EP1695024B1/de
Anticipated expiration legal-status Critical
Ceased 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
    • F42B15/00—Self-propelled projectiles or missiles, e.g. rockets; Guided missiles
    • F42B15/36—Means for interconnecting rocket-motor and body section; Multi-stage connectors; Disconnecting means

Definitions

  • the present invention relates generally to the field of pyrotechnic connectors, and more particularly to pyrotechnic fittings with two separable parts having a first pyrotechnic line provided with a first end of line, and a second pyrotechnic line provided with a second line end.
  • connection is likely to be used in any pyrotechnic system, and more specifically adapted to be interposed between any two entities to be separated from each other following the transmission of a pyrotechnic order between the two lines.
  • this type of connection can be arranged between two different stages of a launcher, or between a releasable element and any other element of the same launcher.
  • the invention also relates to a launcher comprising at least one such pyrotechnic fitting.
  • the invention also has applications in the field of pyrotechnic systems equipping aircraft or helicopters.
  • the two distinct parts of the connector are nested one inside the other so that the two pyrotechnic lines associated with these two parts are facing each other, for the obvious purpose of ensure a correct transmission of a pyrotechnic order from one to the other of these lines. Furthermore, to allow maintenance between the two non-solidary parts until the transmission of the order has not been made, these two parts are respectively individually assembled on two separate ancillary elements to be separated.
  • the object of the invention is therefore to propose a pyrotechnic fitting with separable parts, according to claim 1.
  • connection according to the invention is designed so that the two parts of the main structure are integral with each other before the transmission of the pyrotechnic order resulting in their dissociation, and not only inserted one in the other as was the case in the embodiment of the prior art presented above.
  • the breaking of the weakened section is advantageously effected by using constituent elements of the connection already required to ensure the transmission of the pyrotechnic order, namely the two line ends of the pyrotechnic lines, and more particularly the associated protective envelopes whose deformation encountered during the transmission of the pyrotechnic order directly generates the aforementioned break.
  • the dimensioning and the choice of the material of the main structure, as well as the choice of the pyrotechnic lines, preferably chosen from standard lines, are carried out so that during the transmission of the pyrotechnic order, the envelope (s) protectors deform adequately to cause the breaking of the weakened section, and thus to generate the dissociation of the two parts of the main structure.
  • the main structure is a structure made in one piece, in a metallic material such as steel, aluminum or one of its alloys, or in a plastic material.
  • a metallic material such as steel, aluminum or one of its alloys
  • plastic material such as polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate, polymethyl methacrylate
  • attachment means can then be of extremely simple design, in that they are only intended to allow the attachment of the fitting on an auxiliary element, and not designed to ensure cooperation between the ends of line which is simply obtained by mounting pyrotechnic lines in their associated parts of the main structure.
  • the pyrotechnic fitting may further comprise a splinter shield mounted on the main structure.
  • the splinter shield is then secured to one of the first and second parts of the main structure, and arranged to surround the weakened section to oppose the projection of particles during the transmission of the pyrotechnic order.
  • first and second line ends are preferably each provided with a protective envelope made of a metallic material.
  • first and second line ends are spaced apart by a clearance located at the weakened section of the main structure, so as to facilitate the breaking of this same section, always during the transmission of the pyrotechnic order.
  • the first and second pyrotechnic lines are assembled by screwing on the main structure.
  • the weakened section of the main structure is provided with a rupture primer, which may be in the form of a circumferential groove made externally on the weakened section.
  • the subject of the invention is a launcher comprising at least one pyrotechnic fitting such as that described above and also object of the present invention.
  • a pyrotechnic fitting 1 is shown according to a preferred embodiment of the present invention.
  • connection 1 is shown in a state in which the transmission of a pyrotechnic order from a first pyrotechnic line 2 to a second pyrotechnic line 4 has not yet been realized.
  • connection 1 comprises a main structure 6, preferably made in one piece, for example in an aluminum alloy and copper AU2GN - 2618A T851.
  • This main structure 6 essentially consists of a first portion 8 and a second portion 10 secured to each other via a weakened section 12, arranged therebetween.
  • the first and second parts 8 and 10 and the weakened section 12 of the main structure 6 each take the form of a cylinder of circular section arranged along the same longitudinal axis 14.
  • this axis 14 can therefore be assimilated to the longitudinal axis of the main structure 6, and more generally to the longitudinal axis of the pyrotechnic connector 1.
  • the weakened section coaxial with the two parts 8 and 10 has an outside diameter smaller than the two outside diameters of parts 8 and 10.
  • This weakened section 12 constituting a rigid mechanical connection between the first part 8 and the second part 10 is provided with a breaking primer 16. Indeed, as will be explained in more detail later, it is this same weakened section 12 which is intended to be broken during the transmission of the pyrotechnic order from one to the other of the pyrotechnic lines 2 and 4, in order to generate the dissociation of the two parts 8 and 10.
  • the breaking primer 16 may take the form of a simple circumferential groove formed on an outer surface 18 of the weakened section 12, this outer surface 18 being cylindrical with a circular section.
  • this groove 16 may be located substantially in the middle of the weakened section 12, with respect to a direction parallel to the longitudinal axis 14 of the coupling 1.
  • the first part 8 is provided with fastening means 20 making it possible to fix the connector 1 on an additional element 22, the latter taking for example the form of a partition provided with a perforation 24 inside which is inserted in the first part 8.
  • the attachment means 20 are in the form of a flange disposed around the first portion 8, arranged in abutment against the partition 22, and having holes 26 to ensure its attachment to the same partition 22, for example using a plurality of screws (not shown).
  • the fastening means 20 are made in one piece with the main structure 6 of the coupling 1.
  • the second portion 10 of the structure 6 could also have the same or similar attachment means to be attached to another ancillary element (not shown) without departing from the scope of the invention.
  • the main structure 6 is on the other hand provided with a through passage 28, this passage 28 being formed along the longitudinal axis 14 through the two parts 8 and 10, and through the weakened section 12. Therefore, this weakened section 12 roughly takes the form of a thin crown, centered on the longitudinal axis 14.
  • the through passage 28 includes a first threaded end 28a provided on the first portion 8 to receive the first pyrotechnic line 2, and a second threaded end 28b provided on the second portion 10 to receive the second pyrotechnic line 4.
  • the first pyrotechnic line 2 comprises a line end 30 similar to a pyrotechnic relay, this line end 30 being provided with a protective envelope 30a in the form of a tube, for example a metal tube.
  • the second pyrotechnic line 4 of the connector 1 comprises a line end 32 comparable to a pyrotechnic relay, this line end 32 being provided with a protective envelope 32a in the form of a tube, preferably also of metal. It is indicated that these protective envelopes 30a and 32a are able to deform during the transmission of the pyrotechnic order, in order to cause a break in the weakened section 12 of the main structure 6.
  • the line ends 30 and 32 are facing each other. each other within the through passage 28, and are spaced apart by a clearance 34 adapted on the one hand to ensure a high reliability of transmission of the pyrotechnic order, and on the other hand to optimize the weakening of the weakened section 12.
  • the clearance 34 is at the level of the breaking primer 16 of the weakened section 12.
  • the pyrotechnic connector 1 also comprises a splinterguard 36 which is fixedly mounted around the second part 10, for example by welding.
  • This splinter shield 36 may take the form of a sleeve fitting the second portion 10, and extending to the first portion 8 in which it is simply fitted, over a short length. It could also be possible to provide that the splinter shield 36 is completely free from the first part 8, without departing from the scope of the invention.
  • the shield 36 surrounds in any case the weakened section 12, and forms with it an annular space 38 integrally closed, centered on the longitudinal axis 14.
  • connection 1 is shown in a state in which the transmission of the pyrotechnic order of the first pyrotechnic line 2 to the second pyrotechnic line 4 has just occurred.
  • lines 2 and 4 being preferably identical, the phenomenon which will be described below would occur in the same way if the transmission of the pyrotechnic order was made from the second line 4 to the first line 2.
  • the protective shells 30a and 32a of the line ends 30 and 32 deform and allow to break the weakened section 12 when they come into contact with the latter which is effectively dislocated in a multitude fragments 40 projected inside the annular space 38.
  • the fragments 40 of the weakened section 12 are stopped by the splinter guard 36 provided for this purpose.
  • the ends of the protective shells 30a and 32a then each take the form of a plurality of tongues 30b, 32b arranged in a circular manner and each extending generally radially outwards, as we can see it on the figure 2a .
  • the two parts 8 and 10 of the main structure 6 are dissociated from each other, the only remaining indirect cooperation between these two parts 8 and 10 being constituted by the low interlocking of the shield 36 and the first one. part 8.
  • this is the case only when a splinter shield 36 is provided on the connection 1.
  • this launcher 100 including in particular a main cryogenic stage 102 (called “EPC” in the following description), as well as one or more powder acceleration stages 104 (referred to as "EAP” in the remainder of the description, and of which only one of them is represented on the figure 4 ).
  • EPC main cryogenic stage 102
  • EAP powder acceleration stages 104
  • the EPC 102 and the EAP 104 are in particular connected by a connecting rod 106, which must naturally be cut to ensure the separation of the EPC 102 and the EAP 104, this separation being necessary for the release of the EAP 104.
  • a pyrotechnic connector 1 such as that described above and therefore only schematically represented on the figure 4 , this connection 1 being arranged in such a way that the first pyrotechnic line 2 is connected to the EPC 102, and so that the second pyrotechnic line 4 is connected to the connecting rod 106.
  • the second pyrotechnic line 4 preferably extends through the rod 106 to cooperate with a cutting ring (not shown) of the connecting rod 106.
  • the ring of cutting when actuated, is provided to cause a breakage of the connecting rod 106 according to a fictitious cutting plane 108, to allow the separation of the EPC 102 and the EAP 104.
  • the EPC 102 when it is decided to drop the EAP 104, the EPC 102 then sends a pyrotechnic order through the first line 2 of the pyrotechnic connector 1. In this way, when the order passes through the main structure 6, the first and second parts 8 and 10 dissociate as explained above, by breaking the weakened section 12 (not shown in FIGS. Figures 4 and 5 ).
  • the set comprising the second part 10 of the connector 1, the second pyrotechnic line 4, the portion 112 of the rod 106 and the EAP 104 can be separated from the rest of the launcher 100, and therefore the EPC 102, as shown schematically by the arrow 114.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Air Bags (AREA)
  • Measuring Fluid Pressure (AREA)
  • Casings For Electric Apparatus (AREA)

Claims (11)

  1. Pyrotechnische Verbindung (1) mit trennbaren Teilen, umfassend eine erste pyrotechnische Leitung (2), die mit einem ersten Leitungsende (30) versehen ist, sowie eine zweite pyrotechnische Leitung (4), die mit einem zweiten Leitungsende (32) versehen ist, wobei die pyrotechnische Verbindung eine Hauptstruktur (6) aufweist, umfassend:
    - einen ersten Teil (8) und einen zweiten Teil (10), die jeweils mit ersten bzw. zweiten pyrotechnischen Leitungen (2, 4) ausgestattet sind, wobei die ersten und zweiten Teile (8, 10) miteinander verbunden und geeignet sind, bei einer Übertragung eines pyrotechnischen Befehls von der einen auf die andere der ersten und zweiten pyrotechnischen Leitungen (2, 4) getrennt zu werden;
    - einen dünneren Abschnitt (12), der einerseits mit dem ersten Teil (8) und andererseits mit dem zweiten Teil (10) verbunden ist; und
    - einen Durchgang (28), der sich durch den dünneren Abschnitt (12) sowie durch die ersten und zweiten Teile (8, 10) hindurch erstreckt, wobei die ersten und zweiten Leitungsenden (30, 32) der pyrotechnischen Leitungen (2, 4) einander gegenüber im Inneren des Durchgangs (28) angeordnet sind;
    wobei die ersten und zweiten Leitungsenden (30, 32) der pyrotechnischen Leitungen (2, 4) jeweils mit einer Schutzhülle (30a, 32a) versehen sind, die geeignet ist, sich bei der Übertragung des pyrotechnischen Befehls zu verformen, um einen Bruch des dünneren Abschnitts (12) der Hauptstruktur (6) hervorzurufen;
    dadurch gekennzeichnet, dass sie ein Splitterschutzschild (36) aufweist, das auf der Hauptstruktur (6) montiert ist, um den dünneren Abschnitt (12) zu umgeben, wobei ein vollkommen geschlossener ringförmiger Raum (38) zwischen diesem Schild (36) und dem dünneren Abschnitt (12) ausgebildet ist.
  2. Pyrotechnische Verbindung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Hauptstruktur (6) eine aus einem Stück hergestellte Struktur ist.
  3. Pyrotechnische Verbindung (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Hauptstruktur (6) aus einem metallischen Material hergestellt ist.
  4. Pyrotechnische Verbindung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die ersten und zweiten Teile (8, 10) sowie der dünnere Abschnitt (12) der Hauptstruktur (6) jeweils eine zylindrische Form mit kreisförmigem Querschnitt aufweisen.
  5. Pyrotechnische Verbindung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens einer der ersten und zweiten Teile (8, 10) der Hauptstruktur (6) mit Befestigungsmitteln (20) versehen ist.
  6. Pyrotechnische Verbindung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schutzhüllen (30a, 32a) der ersten und zweiten Leitungsenden (30, 32) metallisch sind.
  7. Pyrotechnische Verbindung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die ersten und zweiten Leitungsenden (30, 32) um ein Spiel (34) beabstandet sind, das sich im Bereich des dünneren Abschnitts (12) der Hauptstruktur (6) befindet.
  8. Pyrotechnische Verbindung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die ersten und zweiten pyrotechnischen Leitungen (2, 4) durch Schrauben auf der Hauptstruktur (6) befestigt sind.
  9. Pyrotechnische Verbindung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der dünnere Abschnitt (12) der Hauptstruktur (6) mit einer Sollbruchstelle (16) versehen ist.
  10. Pyrotechnische Verbindung (1) nach Anspruch 9, dadurch gekennzeichnet, dass die Sollbruchstelle (16) in Form einer Umfangsnut vorhanden ist, die außen auf dem dünneren Abschnitt (12) vorgesehen ist.
  11. Startvorrichtung (100), dadurch gekennzeichnet, dass sie mindestens eine pyrotechnische Verbindung (1) nach einem der vorhergehenden Ansprüche umfasst.
EP04805787.1A 2003-11-06 2004-10-28 Mit trennbaren teilen versehene pyrotechnische verbindung und mindestens solch eine verbindung umfassende startvorrichtung Ceased EP1695024B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0350799A FR2862131B1 (fr) 2003-11-06 2003-11-06 Raccord pyrotechnique a parties dissociables et lanceur comportant au moins un tel raccord
PCT/FR2004/050544 WO2005047809A1 (fr) 2003-11-06 2004-10-28 Raccord pyrotechnique a parties dissociables et lanceur comportant au moins un tel raccord

Publications (2)

Publication Number Publication Date
EP1695024A1 EP1695024A1 (de) 2006-08-30
EP1695024B1 true EP1695024B1 (de) 2016-12-14

Family

ID=34508735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04805787.1A Ceased EP1695024B1 (de) 2003-11-06 2004-10-28 Mit trennbaren teilen versehene pyrotechnische verbindung und mindestens solch eine verbindung umfassende startvorrichtung

Country Status (4)

Country Link
EP (1) EP1695024B1 (de)
FR (1) FR2862131B1 (de)
NO (1) NO340169B1 (de)
WO (1) WO2005047809A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007039011A1 (de) * 2007-08-17 2009-02-19 Rheinmetall Waffe Munition Gmbh Vorrichtung mit zwei Bauteilen, die über eine Trennschraube lösbar miteinander verbunden sind

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623394A (en) * 1970-01-28 1971-11-30 Us Navy Frangible link
US3855934A (en) * 1972-09-28 1974-12-24 Us Army Blind mating connector for missile sections
FR2470757A1 (fr) 1979-12-07 1981-06-12 Aerospatiale Raccord pyrotechnique a parties etanches et autolargables
DE8716561U1 (de) * 1987-12-16 1989-04-13 Diehl GmbH & Co, 8500 Nürnberg Trennschraube mit kopfseitiger, elektrisch zündbarer Trennladung
US5402728A (en) * 1992-08-13 1995-04-04 Trw Inc. Low shock separation bolt

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR2862131A1 (fr) 2005-05-13
NO20062542L (no) 2006-06-02
EP1695024A1 (de) 2006-08-30
NO340169B1 (no) 2017-03-20
WO2005047809A1 (fr) 2005-05-26
FR2862131B1 (fr) 2006-06-30

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