EP0395456B1 - Verbindungsvorrichtung zwischen zwei Teilstücken eines drallstabilisierten Geschosses - Google Patents

Verbindungsvorrichtung zwischen zwei Teilstücken eines drallstabilisierten Geschosses Download PDF

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Publication number
EP0395456B1
EP0395456B1 EP90400693A EP90400693A EP0395456B1 EP 0395456 B1 EP0395456 B1 EP 0395456B1 EP 90400693 A EP90400693 A EP 90400693A EP 90400693 A EP90400693 A EP 90400693A EP 0395456 B1 EP0395456 B1 EP 0395456B1
Authority
EP
European Patent Office
Prior art keywords
projectile
profile
section
axis
accordance
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
EP90400693A
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English (en)
French (fr)
Other versions
EP0395456A1 (de
Inventor
Eric Barthelemy
Régis Aumasson
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.)
Giat Industries SA
Original Assignee
Giat Industries SA
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 Giat Industries SA filed Critical Giat Industries SA
Priority to AT90400693T priority Critical patent/ATE89919T1/de
Publication of EP0395456A1 publication Critical patent/EP0395456A1/de
Application granted granted Critical
Publication of EP0395456B1 publication Critical patent/EP0395456B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/003—Closures or baseplates therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F42B12/62—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected parallel to the longitudinal axis of the projectile

Definitions

  • the present invention relates to a device ensuring the connection between a first and a second section of a gyrostabilized projectile and more particularly of an artillery projectile, sections intended to separate on trajectory and whose trajectories must not interfere with each other after separation.
  • projectiles comprise a body containing a payload (for example a pot of lighting composition), and a gas-generating charge, placed at the level of the warhead, the initiation of which is controlled by an ignition system.
  • a payload for example a pot of lighting composition
  • a gas-generating charge placed at the level of the warhead, the initiation of which is controlled by an ignition system.
  • the pressure of the gases will be exerted via the payload on a closing base and will cause the separation of this one from the body of the projectile, as well as the release of the payload.
  • Payload and base will then follow independent paths, but, so that the payload is not disturbed (for example that the opening of a possible parachute is not hampered), it is essential that there is no interference between these trajectories.
  • a conventional solution consists in using a base comprising deployable fins which cause brutal aerodynamic braking.
  • the center of gravity of the base is then offset away from its geometric axis, which causes the imbalance.
  • the subject of the invention is a device ensuring the connection between a first and a second section of a gyrostabilized artillery projectile, sections intended to separate on the trajectory, device comprising at least one locking means as well as a first profile. carried by the first section and coming into contact with a second profile, complementary to the previous one, and integral with the second section, device characterized in that the first and second profiles do not have geometric symmetry relative to the axis of the projectile and therefore that the respective centers of gravity of the first and second sections are not on the axis of the projectile, and in that after assembly of the two sections the center of gravity of the assembly thus formed is carried by the axis of the projectile.
  • the first profile is carried by an extension of the first section and has at least one cylindrical surface coming into contact with a cylindrical surface of a housing secured to the second section.
  • the cylindrical surface is offset relative to the projectile, the locking means possibly comprising at least one key parallel to the axis of the projectile.
  • the first profile comprises at least two tabs separated by notches.
  • the tongues and the notches can be produced on the cylindrical surface of the extension in a radial direction of the projectile, and in the case where the prolongation of the first section affects the shape of a cylindrical crown, the tongues and the notches can be produced on the crown in an axial direction of the projectile.
  • the whole of the first profile is symmetrical relative to a radial plane passing through the axis of the projectile, and on this first profile, each notch of given dimensions is associated with a tongue of the same dimensions arranged symmetrically relative to the axis of the projectile.
  • the second profile may be carried by a ring made integral with the second section by a second locking means.
  • the first section will advantageously consist of the base of the projectile and the second section by the body of the projectile.
  • the second profile may be carried partially by the body of the projectile and partially by one of the submunitions.
  • Figure 1 shows schematically and in axial section a cargo shell with rear unloading.
  • Figure 2 shows, in perspective, a base carrying a profile corresponding to a first embodiment of the device according to the invention.
  • Figure 3 is a section along the plane A-A of Figure 1 of a projectile carrying a base of the type of that of Figure 2.
  • Figure 4 is a section along the plane A-A of Figure 1 of a projectile whose base has a profile corresponding to a second embodiment of the device according to the invention.
  • Figure 5 shows, in perspective, a base carrying a profile corresponding to a third embodiment of the device according to the invention.
  • FIG. 5A is a section along an axial plane of the projectile carrying the base of FIG. 5.
  • Figure 6 is a perspective view of a base combining two different types of profiles.
  • a projectile 1 (which is a cargo shell) comprises a substantially cylindrical body 2, which contains a payload 5, not shown here, which may be constituted for example by bombs or an illuminating pot , and which is linked in rotation to the body 2 by a connecting means of known type not shown (for example by radial pins).
  • the body 2 is closed at its front end by a warhead 3, which carries a rocket 8 intended to cause the ignition of a gas-generating pyrotechnic composition 6.
  • the base 4 has an extension 10, here having the shape of a cylindrical crown coming to be housed in a bore made on the body.
  • the extension has a first profile 11 comprising a certain number of surfaces which will be described in more detail below, this first profile comes into contact with a second profile 12, which is complementary to it and which is carried by the body 2, the surfaces composing this second profile constitute the bore made on the body.
  • a locking means which here consists of three radial pins 9, immobilizes the two sections and completes the connection device, but any other locking means could be envisaged (for example bonding).
  • the pressure of the gases generated by the composition 6 will be exerted on a piston 7 which will push the payload 5 towards the rear of the projectile causing the shearing of the various connecting pins, and the separation of the base 4 from the body 2.
  • Figures 2 and 3 show in detail the base 4 carrying a profile corresponding to a first embodiment of the connecting device according to the invention.
  • the extension 10 whose geometric axis identified at 15 coincides with the axis of symmetry (and main axis of inertia) of the projectile, carries on its external cylindrical surface 25 the profile 11 constituted by a number of notches 14 , made in a radial direction, and separated by tabs 13.
  • FIG. 3 which is a section of Figure 1 along the radial plane AA, we see that the profile 11 includes an alternation of circular sectors of different radii and different lengths whose dimensions and distribution are such that the together does not have geometric symmetry with respect to axis 15.
  • the profile 12 of the body being complementary to that of the base, the assembly constituted by the assembly of the base and the body constitutes in section a circular crown of constant thickness 17 and therefore presents a symmetry of revolution around the axis 15 ( see Figure 3).
  • the center of gravity of the body / base assembly is also carried by the axis 15 and the projectile does not have an imbalance.
  • the base is integral in rotation with the body of the projectile, the locking means (pins 9 or bonding) may therefore be less resistant, its only function being the connection in translation of these two sections.
  • Figure 4 shows a second embodiment of the connecting device according to the invention.
  • the extension 10 here has an internal cylindrical surface 24 having as its axis the axis of symmetry 15 of the projectile, and an external cylindrical surface 25 whose axis 19 is offset relative to the axis 15.
  • the internal cylindrical surface 24 effectively having the axis 15 as its axis, and the body of the projectile having a profile 12 complementary to the profile 11, the assembly constituted by the assembly of the base and the body constitutes in section a circular crown d constant thickness 17 and therefore has a symmetry of revolution around the axis 15.
  • a key 18 is disposed in a housing 20 arranged on the base, this key will not cause any imbalance for the projectile if it is made of the same material as the base and the body.
  • Figure 6 shows a base 4 carrying an extension 10 whose geometric axis identified at 15 is coincident with the axis of symmetry (and main axis of inertia) of the projectile.
  • This ring carries both notches 14 produced in a radial direction, separated by tongues 13, and notches 22 and tongues 21 produced in an axial direction.
  • the first make it possible to secure the rotation of the base and the body 2 of the projectile.
  • the second ensure the rotational drive of the payload 5 contained in the body, the latter then having a profile complementary to the profile consisting of tongues and axial notches.
  • the second profile is therefore carried in part by the body of the projectile and in part by the payload.
  • each notch 22 or 14 of given dimensions is associated with a tongue 21 or 13 of the same dimensions, arranged symmetrically relative to the axis 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Selective Calling Equipment (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Toys (AREA)
  • Retarders (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Air Bags (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Handcart (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Actuator (AREA)

Claims (11)

  1. Vorrichtung, die die Verbindung zwischen dem ersten und zweiten Teil eines drallstabilisierten Artilleriegeschosses (1) herstellt, wobei die Teile dazu bestimmt sind, sich während des Fluges zu trennen; eine Vorrichtung, die mindestens eine Verriegelungsvorrichtung besitzt sowie ein erstes Profil (11), das vom ersten Teil getragen wird und in Kontakt mit einem zweiten komplementären Profil (12) ist, wobei das zweite Profil mit dem zweiten Teil verbunden und dadurch gekennzeichnet ist, daß das erste und zweite Profil im Verhältnis zur Achse (15) des Geschosses (1) keine geometrische Symmetrie aufweist, sodaß sich die jeweiligen Schwerpunkte des ersten und zweiten Teils nicht auf der Geschoßachse befinden, und dadurch, daß nach Verbindung der beiden Teile der Schwerpunkt der so gebildeten Gesamteinheit von der Geschoßachse getragen wird.
  2. Vorrichtung gemäß Patentanspruch 1, die dadurch gekennzeichnet ist, daß das erste Profil (11) von einer Verlängerung (10) des ersten Teils getragen wird und mindestens eine zylinderförmige Oberfläche (25) aufweist, die in Kontakt mit der zylinderförmigen Oberfläche eines mit dem zweiten Teil verbundenen Paßstücks ist.
  3. Vorrichtung gemäß Patentanspruch 2, die dadurch gekennzeichnet ist, daß die zylinderförmige Oberfläche (25) im Verhältnis zum Geschoß versetzt ist.
  4. Vorrichtung gemäß Patentanspruch 3, die dadurch gekennzeichnet ist, daß die Verriegelung mindestens eine Keilnut (18) aufweist, die parallel zur Geschoßachse (15) verläuft.
  5. Vorrichtung gemäß einer der Patentansprüche 1 bis 4, die dadurch gekennzeichnet ist, daß das erste Profil (11) mindestens zwei Verbindungszacken (13,21) aufweist, die durch Kerben (14,22) getrennt sind.
  6. Vorrichtung gemäß Patentanspruch 5, die dadurch gekennzeichnet ist, daß die Verbindungszacken (13) und die Kerben (14) auf der zylindrischen Oberfläche (25) der Verlängerung (10) radial zum Geschoß angebracht sind.
  7. Vorrichtung gemäß Patentanspruch 5, die dadurch gekennzeichnet ist, daß die Verlängerung (10) des ersten Teils die Form einer zylinderförmigen Krone aufweist, sowie dadurch, daß die Verbindungszacken (21) und die Kerben (22) axial zum Geschoß auf der Krone angebracht sind.
  8. Vorrichtung gemäß den Patentansprüchen 6 oder 7, die dadurch gekennzeichnet ist, daß das gesamte erste Profil (11) symmetrisch zu einer radialen Ebene (23) ist, die die Achse (15) des Geschosses (1) schneidet, sowie dadurch, daß auf diesem ersten Profil jede Kerbe (14,22) von gegebenen Maßen zu einer Verbindungszacke (13,21) mit den gleichen Maßen gehört und symmetrisch zur Geschoßachse (15) liegt.
  9. Vorrichtung gemäß den Patentansprüchen 1 bis 8, die dadurch gekennzeichnet ist, daß das zweite Profil (12) von einem Ring getragen wird, der über eine zweite Verriegelung mit dem zweiten Teil verbunden ist.
  10. Vorrichtung gemäß den Patentansprüchen 1 bis 9, die auf ein Geschoß vom Typ Treibkäfigboden angewendet wird, das dazu bestimmt ist, nach der Trennung von Geschoßboden und Hülle eine Nutzladung auf ihre Bahn zu schießen, und die dadurch gekennzeichnet ist, daß der erste Teil vom Boden (4) des Geschosses (1) gebildet wird, der zweite Teil von der Hülle (2) des Geschosses.
  11. Vorrichtung gemäß Patentanspruch 10, mit Anpassung an ein Geschoß, das im Innern der Hülle verteilte, zylinderförmige Untermunitionen enthält und dadurch gekennzeichnet ist, daß das zweite Profil (12) zum Teil von der Hülle (2) des Geschosses und zum Teil von einer der Untermunitionen getragen wird.
EP90400693A 1989-03-22 1990-03-15 Verbindungsvorrichtung zwischen zwei Teilstücken eines drallstabilisierten Geschosses Expired - Lifetime EP0395456B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90400693T ATE89919T1 (de) 1989-03-22 1990-03-15 Verbindungsvorrichtung zwischen zwei teilstuecken eines drallstabilisierten geschosses.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903755 1989-03-22
FR8903755A FR2644881B1 (fr) 1989-03-22 1989-03-22 Dispositif de liaison entre un premier et deuxieme troncon d'un projectile gyrostabilise

Publications (2)

Publication Number Publication Date
EP0395456A1 EP0395456A1 (de) 1990-10-31
EP0395456B1 true EP0395456B1 (de) 1993-05-26

Family

ID=9379950

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90400693A Expired - Lifetime EP0395456B1 (de) 1989-03-22 1990-03-15 Verbindungsvorrichtung zwischen zwei Teilstücken eines drallstabilisierten Geschosses

Country Status (6)

Country Link
EP (1) EP0395456B1 (de)
AT (1) ATE89919T1 (de)
DE (1) DE69001713T2 (de)
ES (1) ES2042231T3 (de)
FR (1) FR2644881B1 (de)
NO (1) NO169029C (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682754B1 (fr) * 1991-10-22 1995-03-03 Giat Ind Sa Obus cargo.
FR2683310B1 (fr) * 1991-11-06 1993-12-31 Giat Industries Dispositif d'ejection d'elements de charge utile hors de l'enveloppe d'un obus cargo.
FR2684754B1 (fr) * 1991-12-10 1995-04-07 Thomson Brandt Armements Obus dont le culot fait office de pot de parachute d'une sous-munition.
DE4429292C2 (de) * 1994-08-18 1998-04-09 Rheinmetall Ind Ag Drallstabilisiertes Trägergeschoß
US6796244B2 (en) * 2002-12-04 2004-09-28 Denel (Proprietary) Limited Opening and closing a container
US11624597B1 (en) * 2021-03-25 2023-04-11 The United States Of America As Represented By The Secretary Of The Army Hybrid annular-cantilevered snap-fit joint

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE344998C (de) * 1920-10-03 1921-12-03 Harry Moeller Doppelt verjuengtes Geschoss
SE339648B (de) * 1970-01-08 1971-10-11 Bofors Ab
SE339802B (de) * 1970-02-25 1971-10-18 Bofors Ab
SE373939B (de) * 1973-06-21 1975-02-17 Bofors Ab
DE2350138A1 (de) * 1973-10-05 1975-04-10 Bofors Ab Geschoss mit verdrehungssteifer verbindung zwischen einem ersten teil und einem zweiten teil sowie verfahren zur herstellung der verbindung
DE2350596A1 (de) * 1973-10-09 1979-10-25 Messerschmitt Boelkow Blohm Infanteriegeschoss
SE391808B (sv) * 1975-07-04 1977-02-28 Bofors Ab Anordning vid bottenenhet for projektil
SE416078B (sv) * 1976-08-23 1980-11-24 Foerenade Fabriksverken Anordning for utskjutning och separation av flera kroppar ur en granat eller liknande
DE3706033A1 (de) * 1987-02-25 1988-09-08 Diehl Gmbh & Co Geschoss mit einem submunitionskoerper

Also Published As

Publication number Publication date
NO169029C (no) 1992-04-29
ATE89919T1 (de) 1993-06-15
FR2644881A1 (fr) 1990-09-28
EP0395456A1 (de) 1990-10-31
DE69001713D1 (de) 1993-07-01
FR2644881B1 (fr) 1991-05-31
DE69001713T2 (de) 1993-09-02
NO901314L (no) 1990-09-24
NO901314D0 (no) 1990-03-21
ES2042231T3 (es) 1993-12-01
NO169029B (no) 1992-01-20

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