[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP0962742B1 - Vorrichtung zum Schneiden von nicht-metallischen Stücken mittels eines pyrotechnischen Ausdehnungsrohres - Google Patents

Vorrichtung zum Schneiden von nicht-metallischen Stücken mittels eines pyrotechnischen Ausdehnungsrohres Download PDF

Info

Publication number
EP0962742B1
EP0962742B1 EP99401321A EP99401321A EP0962742B1 EP 0962742 B1 EP0962742 B1 EP 0962742B1 EP 99401321 A EP99401321 A EP 99401321A EP 99401321 A EP99401321 A EP 99401321A EP 0962742 B1 EP0962742 B1 EP 0962742B1
Authority
EP
European Patent Office
Prior art keywords
parts
cut
cutting
spacer
pyrotechnic
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
EP99401321A
Other languages
English (en)
French (fr)
Other versions
EP0962742A1 (de
Inventor
Cédric Salort
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.)
Aerospatiale Matra
Original Assignee
Aerospatiale Matra
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 Aerospatiale Matra filed Critical Aerospatiale Matra
Publication of EP0962742A1 publication Critical patent/EP0962742A1/de
Application granted granted Critical
Publication of EP0962742B1 publication Critical patent/EP0962742B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F42B15/38—Ring-shaped explosive elements for the separation of rocket parts

Definitions

  • the invention relates to a cutting device using a pyrotechnic expansion tube for cut at least one piece, along a cutting line given.
  • Such a device can in particular be used in the aeronautics and space industries, for order in a very short time the separation of two structural elements, while ensuring transmission sometimes significant efforts between these two elements, before cutting is done.
  • pyrotechnic expansion tube designates a waterproof and deformable metal tube, in which walks a detonating cord.
  • Soft material such as silicone rubber is interposed between the detonating cord and envelope.
  • the envelope Before firing, the envelope has an oblong section, for example shaped like an ellipse or flattened circle.
  • the shock wave which propagates at very high speed the along the tube distorts the envelope and tends to give it a substantially circular section.
  • a cutting device pyrotechnic including an expansion tube pyrotechnic is used to cut pieces metal.
  • it is mounted in a space formed between two metal parts or between two parts of the same metal part.
  • the room (s) to cut are pre-machined, so that present an area of reduced thickness according to each desired cutting line. Expansion of the envelope caused by the firing of the detonating cord translated by cutting the part (s) according to the cutting line corresponding to the machined area.
  • Cutting devices of one or two pieces metallic by means of an expansion tube are described in particular in the documents US-A-3 486 410, US-A-3 453 960, US-A-3 698 281, FR-A-2 598,796 and EP-A-0 273 061.
  • the structural elements used in the aeronautics and space industries are made of more and more frequently in materials not metal.
  • the materials used are often composite materials, i.e. materials formed from long fibers arranged in layers superimposed according to preferential orientations, embedded in a resin matrix.
  • the machining of a zone of less thickness in a non-metallic material, and especially in a composite material, currently essential to locate and limit cutting produced by the pyrotechnic expansion tube, is not acceptable in non-metallic material, especially of the composite type. Indeed, such machining would unacceptably diminish the mechanical characteristics of the part before its cutting, by cutting the long fibers which provide these characteristics.
  • the cutting of a non-material metallic, in particular of the composite type, by means of a cutting device may cause significant environmental pollution as well as significant reduction in the mechanical characteristics of adjoining structures. This decrease would in particular for the origin of the so-called phenomena of "delamination", that is to say a separation of the layers of fibers near the cutting line.
  • the subject of the invention is precisely a pyrotechnic cutting device, allowing cut non-metallic parts directly, and in particular parts made of composite material, by means a pyrotechnic expansion tube, preserving the mechanical properties of these parts before and after their cutting, and limiting the pollution generated during the cut.
  • a cutting device pyrotechnic including an expansion tube pyrotechnic mounted in a space between two parts and delimited by at least one spacer connecting these two pieces, so as to cut at least one of the pieces along at least one cutting line when the tube is used, characterized in that each piece to be cut is made of non-metallic material, a buttress being fixed thereon, opposite and in face of the spacer, so that an edge of the buttress extends along the cutting line.
  • a relatively cut clean and well located is thus ensured, without machining of parts.
  • the mechanical strength of parts before cutting is not called into question.
  • the sharpness of the cut preserves the integrity of parts after cutting and severely limits the pollution.
  • the device according to the invention allows to significantly lighten the assemblies not metal which must be cut with a pyrotechnic expansion tube.
  • the device according to the invention allows to significantly reduce the shock generated during cutting, compared to that which is generated when cutting parts metal.
  • each buttress is substantially dimensionally stable.
  • each buttress is made of a deformable material.
  • a holding member made of a material deformable is preferably attached to each part to cut, opposite and opposite the expansion tube pyrotechnic.
  • the holding member then comprises a edge which extends along the cutting line and extends away from this edge.
  • these two members can be made of the same material as the part to be cut and this material is advantageously a composite material formed from long fiber layers embedded in a resin matrix. The whole is then made directly by draping, during manufacturing of the room.
  • the parts and the spacer can be made of the same material not metallic, in monolithic form.
  • the pyrotechnic expansion tube is then integrated into the assembly during the manufacture of the parts.
  • the spacer can be fixed between the parts by fixing means such as bolts passing through them.
  • the other room is a substantially non-deformable support piece, connected to the part to be cut by one or two spacers.
  • the space in which is housed the pyrotechnic expansion tube is delimited by two spacers and a buttress is placed on each pieces to be cut, opposite a first of spacers.
  • the two parts form then the skins of a first sandwich structure including a soul
  • the two buttresses form the skins of a second sandwich structure, including also a soul.
  • Terminal parts of parts forming the skins of the first sandwich structure then enter the second sandwich structure, between the buttresses and the second spacer.
  • the second spacer is fixed between the pieces in a preferred location away from the pyrotechnic expansion tube.
  • the reference 10 designates a part made of a non-metallic material, as desired cut along a cutting line 12.
  • the material not metal in which the part 10 is formed can be of different natures, without departing from the framework of the invention.
  • a preferred application is for the case where this material is a composite material, formed of long fiber layers embedded in a matrix of resin.
  • such parts can be obtained by draping resin-impregnated fiber sheets thermosetting, then polymerization of the resin.
  • the part 10 to be cut can be of various forms, without departing from the framework of the invention.
  • the part 10 is in the form of a plate of substantially uniform thickness. This plate can be flat, curved, or have any other shape suitable for the intended application.
  • the cutting device according to the invention is generally designated by reference 14.
  • This cutting device comprises in this case a tube 16 with pyrotechnic expansion, a support piece 18 and a spacer 20 (these two last pieces can be separated, or made in one piece, as shown).
  • the pyrotechnic expansion tube 16 is performed in the same way as in the devices applied to the cutting of metal parts. However, it has a reduced dimension adapted the nature of the material constituting the part 10 to cut, so as to generate a shock wave significantly less than in the cutting of metal parts. A description detail of the pyrotechnic expansion tube 16 is not therefore not necessary.
  • the expansion tube 16 pyrotechnic includes a metal casing 22 waterproof and deformable, a detonating cord 24 housed at inside the envelope 22, as well as a material flexible 26 interposed between the detonating cord 24 and the envelope 22.
  • the flexible material 26 has in particular for function to center the detonating cord inside of the envelope. As an example, it can be carried out made of silicone rubber.
  • the envelope 22 Before firing, the envelope 22 has an oblong section, by example in the shape of a flattened circle or oval, like illustrated in Figure 1.
  • the pyrotechnic expansion tube 16 is received in a space 28 formed between the part 10 to be cut and the support piece 18, this space 28 being delimited by a side by a face 21 of the spacer 20. More specifically, the longer section of the envelope 22 is oriented parallel to the direction defined by the part 10 to be cut.
  • the support piece 18 and the spacer 20 form a single part, distinct from part 10 to cut.
  • This unique piece is fixed on the piece to cut by fastening means such as bolts (not shown) whose location is illustrated schematically by the dashed line 30.
  • the nature and thickness of the materials constituting the support piece 18 and the spacer 20 are such that these two pieces are practically undeformable during the implementation of the tube 16 to pyrotechnic expansion. This result is obtained either in using non-deformable thickness materials limited, such as metals, either by using relatively soft but stronger materials thickness, such as non-metallic materials, as illustrated in Figure 1. In the latter case, it should be noted that as a variant, the support piece 18 as well as the spacer 20 can be made of a in one piece with piece 10 to be cut. The means of fixing such that the bolts 30 are no longer required.
  • the face of the support piece 18 facing part 10 to be cut constitutes a substantially non-deformable surface, generally parallel to part 10 and on which the tube 16 with pyrotechnic expansion, when fire of the detonating cord 24. Consequently, the expansion of the envelope 22 is carried out entirely in the direction of part 10 to be cut.
  • the face 21 of the spacer 20 facing space 28 is aligned with the line of cutout 12 of part 10.
  • the thickness of the tube 16 to pyrotechnic expansion is substantially equal to the clearance mounting, at the width of the space 28, between the part 10 to be cut and the supporting part 18.
  • One element (not shown) can be attached to the part support 18, or formed directly on this part so to close the space 28 opposite the spacer 20, if this is necessary to prevent the escape of the tube 16.
  • a buttress 40 is fixed on the part 10 to be cut, opposite the spacer 20 and opposite to it.
  • This buttress 40 is in the form of a plate one edge 42 of which extends along the cutting line 12 of Exhibit 10.
  • the buttress 40 is substantially dimensionally stable.
  • the undeformable nature of the buttress can be obtained either by using a material not relatively thick metal, as shown, either using lesser metallic material thickness.
  • the fixing means (not shown) including the location is illustrated by the dashed line 30 provide effective support of the buttress 40 against the part 10, near the cutting line 12.
  • the presence of the buttress 40 ensures localized and precise cutting, acting on the way of an anvil on which the piece rests 10 to cut.
  • the resulting shock wave causes the expansion of the envelope 22, which tends to take a section substantially circular. Since tube 16 to pyrotechnic expansion is supported on a part 18 substantially undeformable, its expansion occurs essentially in the direction of the part 10 to be cut. It is therefore applied entirely to part 10. Since it is supported on the buttress 40 in its part located opposite the spacer 20, the expansion of the tube 16 therefore has the effect of cutting the piece 10 precisely, along the line of cutout 12 defined previously.
  • FIG. 2 a variant is shown of the first embodiment of the invention which has just been described with reference to FIG. 1.
  • This variant relates to the case where the pyrotechnic cutting 14 is used to cut simultaneously two pieces 10, substantially parallel to each other, delimiting between them a space 28.
  • the space 28 is closed, opposite to the spacer 20, for example by a second spacer 36.
  • the spacer 36 is fixed to the parts 10 by fixing means such as bolts (not shown), the location of which is illustrated schematically by the dashed line 38 in FIG. 2.
  • the spacer 36 can be done in one piece with both parts 10 or replaced by the direct junction of these two rooms, then joined to each other.
  • a buttress 40 is fixed on the outer face of each of the parts 10, opposite the spacer 20. More specifically, an edge 42 of each of the buttresses 40 is aligned with the cutting line 12 provided in each of the pieces 10 and, therefore, with the face 21 of the spacer 20, facing the space 28.
  • the location of the cut along the cut lines 12 is all the more efficient than the parts of parts 10 which are in contact with the pyrotechnic expansion tube 16 flex easily outward when pivoting around their anchor point schematically by dashed lines 38 in FIG. 2.
  • the fixing parts 10 on spacer 36 must be as far away as possible from the tube 16 and the lines of cutout 12 provided in the parts.
  • the buttresses 40 are substantially non-deformable, as in the embodiment described above in se referring to figure 1.
  • FIG 3 there is shown schematically a second embodiment of a pyrotechnic cutting device 14 in accordance with the invention.
  • the Figure 3 illustrates the simplest case where cutting relates to a single room 10. The general arrangement is therefore comparable to that described above with reference to Figure 1, so that a detailed description of the various parts which in this case constitute the cutting device 14 is not necessary.
  • a first difference lies in the fact that instead of being substantially non-deformable, the buttress 40 is deformable and produced in a material preferably identical or very close to the non-metallic material in which the piece 10 to be cut.
  • the buttress 40 can be obtained by draping additional layers fibers impregnated with thermosetting resin. The buttress is then linked to part 10 over its entire surface adjacent to it, during the manufacture of the room.
  • the orientation of the fibers in the buttress 40 may be significantly different from that of the fibers located in part 10, to hold account of the specific function of the buttress 40.
  • the fibers placed in the buttress 40 are advantageously intertwined to ensure recovery radial forces applied to them, during the implementation of the pyrotechnic expansion tube 10.
  • the fibers placed in part 10 are generally oriented mainly in the direction longitudinal, to ensure the transmission of efforts applied to them mainly in this direction.
  • an organ of holding 44 is also fixed on the part 10, to the opposite of the pyrotechnic expansion tube 16 and in face of it.
  • the holding member 44 includes a edge 46 which extends along the cutting line 12. This edge 46 is practically in contact with edge 42 of the buttress 40.
  • the holding member 44 is made in one deformable material; in order to follow the deformation of the part 10 during its cutting ordered by the setting tube pyrotechnic expansion tube 16, and it extends a certain distance away from its edge 46.
  • the holding member 44 is advantageously made of a material similar to that in which is formed the part 10 to be cut. In case this last one is made of composite material, the support 44 can therefore be integrated directly into the part during its manufacture, in the same way as the buttress 40 in the embodiment illustrated on Figure 3.
  • the maintenance member 44 has the functions of maintain the integrity of the corresponding part of the part 10 and absorb the shock when cutting. he therefore makes it possible to further improve the cleanliness of the cutting.
  • the holding member 44 preserves the integrity of the adjacent part of the part 10 after cutting, by opposing its delamination.
  • Figure 4 there is shown a device of pyrotechnic cutting comparable to that which comes to be described with reference to Figure 3, applied to the simultaneous cutting of two pieces 10.
  • the holding members 44 associated with the pieces 10 to be cut are fixed on a spacer 36 by fixing means such as bolts (not shown) whose location is illustrated by the dashed lines 38, respecting the same conditions as those described previously referring to Figure 2. More precisely, the attachment of parts 10 and organs holding 44 on the spacer 36 is made in one location 38 relatively distant from the tube 16 and the cutting lines 12 adjacent to the spacer 20 and at the buttresses 40. This characteristic facilitates the bending of the parts 10 by pivoting around the means aforementioned fixing, necessary for a good cut by shearing the two pieces along the spacer 20 and buttresses 40.
  • the parts 10 can take a wide variety of forms, outside the area of junction in which the device is located cutting.
  • the two parts 10 can remain parallel to each other and be connected by a structure honeycomb 48, for example honeycomb.
  • the parts 10 then constitute the skins of a structure sandwich whose soul is formed by the structure alveolar 48.
  • the parts 10 can also be connected to each other to form a structure monobloc, outside the junction area materialized by the device 14.
  • the spacers 20 and 36 can optionally do integral parts of these parts 10.
  • the two pieces 10 to be cut form the skins of a first sandwich structure 50, the core of which consists of a cellular material 48, by honeycomb example.
  • the expansion tube 16 pyrotechnic is housed in a space 28, devoid of cellular material, formed near one of the edges of the sandwich structure 50.
  • a spacer 36 delimits the space 28, on the side of the cellular material 48. This spacer 36 is fixed between the parts 10 by fixing means such as bolts (not shown) whose location 38 is also far as possible from the pyrotechnic expansion tube 16.
  • the second structure sandwich 52 includes two skins 40, a core 56 in one cellular material, for example honeycomb, and a spacer 20 replacing the core 56 along the edge of this structure adjoining the first structure sandwich 50.
  • the end parts of the two parts 10 penetrate between the skins 40 and the spacer 20 and fixing means such as bolts (not shown) connect the stack thus formed by the skins 40, the parts 10 and the spacer 20.
  • fixing means such as bolts (not shown) connect the stack thus formed by the skins 40, the parts 10 and the spacer 20.
  • These means are located at a location 30 also as close as possible to the edges 42 of the skins 40 and the face 21 of the spacer 20 facing the space 28. From plus, the edges 42 and the face 21 are aligned according to the cutting lines 12 provided in parts 10.
  • the skins 40 of the second sandwich structure 52 perform the same function as the buttresses in the embodiments described above. It is why they were designated by the same digital references.
  • the cutting device pyrotechnic 14 allows, in all the cases, a direct cutting of one or two pieces in non-metallic material, and in particular of material composite, according to one or more sharp cutting lines and well located, in clean conditions generally satisfactory.
  • the lines of cutout 12 can either be aligned with the same spacer 20, as shown, be aligned with each of the spacers 20 and 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Vibration Dampers (AREA)
  • Air Bags (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (11)

  1. Vorrichtung zum pyrotechnischen Trennen, mit einem pyrotechnischen Expansionsrohr (16), das in einem zwischen zwei Teilen (10,18) angeordneten und von mindestens einem diese beiden Teile verbindenden Zwischenstück (20) begrenzten Raum (28) derart angebracht ist, dass mindestens eines der Teile an mindestens einer Trennlinie (12) getrennt wird, wenn das Rohr betätigt wird, wobei ein Gegenstück (40) an diesem entgegengesetzt zum Zwischenstück (20) und gegenüber diesem derart befestigt ist, dass sich ein Rand (42) des Gegenstücks längs der Trennlinie (12) erstreckt.
  2. Vorrichtung nach Anspruch 1, wobei das Gegenstück (40) im Wesentlichen unverformbar ist.
  3. Vorrichtung nach Anspruch 1, wobei das Gegenstück (40) aus einem verformbaren Material gefertigt ist.
  4. Vorrichtung nach einem der vorangehenden Ansprüche, wobei ein aus einem verformbaren Material gefertigtes Halteelement (44) an jedem zu trennenden Teil (10) entgegengesetzt zum pyrotechnischen Expansionsrohr (16) und gegenüber diesem befestigt ist, wobei das Halteelement (44) einen Rand (46) aufweist, der sich längs der Trennlinie (12) und über diesen Rand hinaus erstreckt.
  5. Vorrichtung nach den Ansprüchen 3 und 4 in Kombination, wobei das Gegenstück (40) und das Halteelement (44) aus dem gleichen Material gefertigt sind wie das loszutrennende Teil (10), und dieses Material ein Verbundmaterial ist, das aus in eine Härzmatrix eingebetteten Schichten langer Fasern gebildet ist.
  6. Vorrichtung nach einem der vorangehenden Ansprüche, wobei die Teile (10,18) und das Zwischenstück (20) aus dem gleichen, nicht-metallischen Material in monolithischer Form gefertigt sind.
  7. Vorrichtung nach einem der Ansprüche 1 bis 5, wobei das Zwischenstück (20) zwischen den Teilen (10,18) mittels diese durchsetzenden Befestigungsmitteln (30) befestigt ist.
  8. Vorrichtung nach einem der Ansprüche 1 bis 7, wobei ein einziges (10) der beiden Teile zu trennen ist und das andere Teil ein im Wesentlichen unverformbares Stützteil (18) ist.
  9. Vorrichtung nach einem der Ansprüche 1 bis 7, wobei die beiden Teile (10) zu trennen sind, der Raum (28) durch zwei Zwischenstücke (20, 36) begrenzt ist und ein Gegenstück (40) an jedem der Teile (10) gegenüber einem ersten (20) der Zwischenstücke angeordnet ist.
  10. Vorrichtung nach Anspruch 9 kombiniert, wobei die beiden Teile (10) Außenschichten einer ersten Sandwich-Struktur (50) bilden und die beiden Gegenstücke (40) Schichten einer zweiten Sandwich-Struktur (51) bilden, in welche Endabschnitte der Teile (10) eindringen.
  11. Vorrichtung nach einem der Ansprüche 9 oder 10, wobei das zweite Zwischenstück (36) zwischen den Teilen (10) an einer von dem pyrotechnischen Expansionsrohr (16) entfernten Stelle befestigt ist.
EP99401321A 1998-06-02 1999-06-01 Vorrichtung zum Schneiden von nicht-metallischen Stücken mittels eines pyrotechnischen Ausdehnungsrohres Expired - Lifetime EP0962742B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9806898 1998-06-02
FR9806898A FR2779223B1 (fr) 1998-06-02 1998-06-02 Dispositif de decoupe de pieces non metalliques au moyen d'un tube a expansion pyrotechnique

Publications (2)

Publication Number Publication Date
EP0962742A1 EP0962742A1 (de) 1999-12-08
EP0962742B1 true EP0962742B1 (de) 2002-12-11

Family

ID=9526929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99401321A Expired - Lifetime EP0962742B1 (de) 1998-06-02 1999-06-01 Vorrichtung zum Schneiden von nicht-metallischen Stücken mittels eines pyrotechnischen Ausdehnungsrohres

Country Status (5)

Country Link
US (1) US6170400B1 (de)
EP (1) EP0962742B1 (de)
DE (1) DE69904394T2 (de)
ES (1) ES2188109T3 (de)
FR (1) FR2779223B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6412415B1 (en) * 1999-11-04 2002-07-02 Schlumberger Technology Corp. Shock and vibration protection for tools containing explosive components
US6422148B1 (en) * 2000-08-04 2002-07-23 Schlumberger Technology Corporation Impermeable and composite perforating gun assembly components
FR2838818B1 (fr) 2002-04-19 2006-12-08 Eads Launch Vehicules Dispositif de liaison provisoire et de separation pyrotechnique de deux elements, sans rupture
FR2839550B1 (fr) 2002-05-07 2004-07-30 Eads Launch Vehicles Dispositif de liaison provisoire et de separation pyrotechnique de deux elements, a organe mobile
FR2868351B1 (fr) * 2004-04-02 2006-06-23 Pyroalliance Sa Dispositif de decoupe d'une structure dans un vehicule automobile
WO2007140258A2 (en) * 2006-05-26 2007-12-06 Owen Oil Tools Lp Perforating methods and devices for high wellbore pressure applications
FR2946101B1 (fr) 2009-05-29 2011-07-01 Astrium Sas Dispositif de liaison provisoire et de separation pyrotechnique de deux ensembles
FR2973869B1 (fr) * 2011-04-06 2013-05-03 Astrium Sas Piece a rupture pyrotechnique detonante

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2453960A (en) 1944-03-23 1948-11-16 Asea Ab Means for charging storage batteries
US3453960A (en) 1967-12-11 1969-07-08 Gen Dynamics Corp Noncontaminating linear explosive separation
US3486410A (en) 1968-04-18 1969-12-30 Mc Donnell Douglas Corp Explosive severance means
US3698281A (en) 1970-02-27 1972-10-17 Lockheed Aircraft Corp Explosive system
US4314500A (en) * 1980-01-25 1982-02-09 The United States Of America As Represented By The Secretary Of The Air Force Instantaneous opening positive lock mechanism
US4685376A (en) 1985-06-24 1987-08-11 Mcdonnell Douglas Corporation Separation system
FR2598769B1 (fr) 1986-05-13 1988-08-05 Jade Sa Garniture d'etancheite hydraulique ou pneumatique
FR2598796B1 (fr) 1986-05-16 1990-04-20 Aerospatiale Dispositif de separation pyrotechnique de deux elements
US4901802A (en) * 1987-04-20 1990-02-20 George Flint R Method and apparatus for perforating formations in response to tubing pressure
US4778009A (en) * 1987-07-13 1988-10-18 Halliburton Company Shock actuated switch for perforating gun assembly
US4829901A (en) * 1987-12-28 1989-05-16 Baker Hughes Incorporated Shaped charge having multi-point initiation for well perforating guns and method
US4885993A (en) * 1988-02-17 1989-12-12 Goex, Inc. Shaped charge with bifurcated projection for detonating cord
US5390606A (en) * 1992-11-02 1995-02-21 Orbital Sciences Corporation Frangible joint separation system
US5392684A (en) * 1993-06-25 1995-02-28 The Ensign-Bickford Company Explosive thrust-producing coupling
US5331894A (en) * 1993-06-25 1994-07-26 The Ensign-Bickford Company Explosive release coupling

Also Published As

Publication number Publication date
EP0962742A1 (de) 1999-12-08
US6170400B1 (en) 2001-01-09
DE69904394T2 (de) 2003-10-30
ES2188109T3 (es) 2003-06-16
DE69904394D1 (de) 2003-01-23
FR2779223B1 (fr) 2000-08-11
FR2779223A1 (fr) 1999-12-03

Similar Documents

Publication Publication Date Title
EP0962741B1 (de) Vorrichtung zur provisorischen Verbindung und zum pyrotechnischen Abtrennen von zwei nichtmetallischen Einheiten
EP0962743B1 (de) Vorrichtung zum pyrotechnischen Schneiden von nicht metallischen Stücken
EP1234984B1 (de) Vorrichtung zum Verbinden einer Kompositplatte mit einer Trägerkonstruktion
EP1931567B1 (de) Aufhängungsstruktur für ein triebwerk für ein flugzeug
EP1950392B1 (de) Vorrichtung zum Zusammenbau von zwei Einheiten, beispielsweise für den Stator eines Turbotriebwerks
FR2767560A1 (fr) Ensemble reducteur de bruit pour turboreacteur d'aeronef
FR2817994A1 (fr) Panneau acoustique sandwich
EP0962742B1 (de) Vorrichtung zum Schneiden von nicht-metallischen Stücken mittels eines pyrotechnischen Ausdehnungsrohres
FR2868123A1 (fr) Structure d'entree d'air pour moteur d'aeronef
EP1355120B1 (de) Vorrichtung zur provisorischen Verbindung und zum pyrotechnischen Trennen von zwei Elementen, ohne Bruch
FR3075759A1 (fr) Partie anterieure de nacelle d'un ensemble propulsif d'aeronef comportant un element amortisseur
EP2435716B1 (de) Vorrichtung zum vorübergehenden verbinden und pyrotechnischen trennen zweier anordnungen
CA2847668A1 (fr) Peau intermediaire acoustique et sa mise en oeuvre
FR2863673A1 (fr) Dispositif d'assemblage par rivetage de plusieurs elements et procede d'assemblage de panneaux notamment de fuselage d'aeronef a l'aide dudit dispositif
EP1361411B1 (de) Vorrichtung mit bewegbarem Element, zur provisorischen Verbindung und zum pyrotechnischen Abtrennen von zwei Einheiten
EP0453353B1 (de) Luftbremsenvorrichtung
EP2415117B1 (de) Funkantenne mit verbessertem versteifungsmittel
EP0521793B1 (de) Befestigungsverfahren von Verbundwerkstoffstrukturen mit einem metallenen Schiffsrumpf
EP1108896B1 (de) Verbundverbindung zur Montage mindestens eines Aussenelementes auf einer Sandwichplatte
EP1364873B1 (de) Kombinierte Vibrationsdämpfer-Kugelgelenk- Vorrichtung für einen Hubschrauberrotor
CA2481929C (fr) Dispositif d'equipement d'un trou dans un panneau et panneau ainsi equipe
FR2970897A1 (fr) Structure fibreuse formant une bride et une contre-bride
EP0491587A1 (de) Hohlladung
EP3844405B1 (de) Vorrichtung zum verbinden von rohrförmigen elementen
FR2806342A1 (fr) Dispositif pour la rupture controlee sans choc de structures

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE ES GB IT LI SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AEROSPATIALE MATRA

17P Request for examination filed

Effective date: 20000522

AKX Designation fees paid

Free format text: CH DE ES GB IT LI SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20020307

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES GB IT LI SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69904394

Country of ref document: DE

Date of ref document: 20030123

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20030325

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2188109

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030912

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040602

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20040604

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050602

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050601

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20110713

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20110719

Year of fee payment: 13

Ref country code: DE

Payment date: 20110629

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20110630

Year of fee payment: 13

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120601

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69904394

Country of ref document: DE

Effective date: 20130101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120630

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120630

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130101

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20131021

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120602