EP0030052B1 - Teleskopierbares Geschoss - Google Patents

Teleskopierbares Geschoss Download PDF

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Publication number
EP0030052B1
EP0030052B1 EP80201098A EP80201098A EP0030052B1 EP 0030052 B1 EP0030052 B1 EP 0030052B1 EP 80201098 A EP80201098 A EP 80201098A EP 80201098 A EP80201098 A EP 80201098A EP 0030052 B1 EP0030052 B1 EP 0030052B1
Authority
EP
European Patent Office
Prior art keywords
aforesaid
tail
projectile
head
groove
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
EP80201098A
Other languages
English (en)
French (fr)
Other versions
EP0030052A1 (de
Inventor
André Jozef Christiaan Gabriels
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.)
FABRIQUE NATIONALE NOUVELLE HERSTAL, AFGEKORT FNNH
Original Assignee
FN Herstal 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
Priority claimed from BE2/58240A external-priority patent/BE880348A/fr
Application filed by FN Herstal SA filed Critical FN Herstal SA
Priority to AT80201098T priority Critical patent/ATE4841T1/de
Publication of EP0030052A1 publication Critical patent/EP0030052A1/de
Application granted granted Critical
Publication of EP0030052B1 publication Critical patent/EP0030052B1/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
    • F42C15/18—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/12—Stabilising arrangements using fins longitudinally-slidable with respect to the projectile or missile
    • 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
    • F42B30/04—Rifle grenades

Definitions

  • the present invention relates to a projectile having a head extended by a tubular tail made of two telescopic tubular parts, the first of which is solid with said head and mainly constituted by an explosive charge, and the second of which is capable of sliding around the first part of tail.
  • This type of projectile is revealed by FR-A-945.081, as well as by DE-C-177.271.
  • the latter reveals an ignition rocket comprising two telescopic tubular parts, one of which is integral with the head and carries a first part, of a firing chain and the other of which carries the remaining part of the firing chain fire, guide means being distributed over said two parts in order to assign them a determined angular position, as a function of their relative axial position.
  • the telescopic projectile of the invention is for example a grenade intended to be launched using a rifle.
  • the object of the present invention is to provide a projectile of the aforementioned type, but having very high security, more particularly high security at the start of the trajectory.
  • this object is achieved by the fact that said first and second parts of the tail carry, respectively, a first and a second part of a chain for igniting said explosive charge and in that means for guides are distributed over said first and second parts of the tail in order to assign them a determined angular position, as a function of their relative axial position, said guide means being constituted, on the one hand, by at least one groove provided in the a part of the tail and extending along a generatrix thereof and, on the other hand, by at least one finger carried by the other part of this tail, the end of said groove being extended by a curved groove in the vicinity of the head of the projectile and a recess being provided between said curved groove and said head, this recess being separated from the curved groove by a wall, said finger fracturing said wall to arrive in said recess if hanging t launching of the projectile an obstacle is encountered.
  • the finger When launching the projectile, the finger travels through the groove and if, during this phase, an obstacle was encountered by the projectile, the finger would fracture the wall to arrive in the recess. In this position, the firing of the firing chain cannot take place because the two constituent parts of the latter are not aligned.
  • the projectile represented in FIGS. 1-16 comprises a head 1 and a telescopic tubular tail 2 with tail section 3.
  • the tail 2 is made in two parts, one-4-is integral with the head 1 and the other-5-can slide around the first.
  • the front end of the part 5 is provided with a collar 6 whose shape complements that of the head 1 when the projectile is in the position of FIG. 1 or at impact.
  • the body of the tail part 4 constitutes the explosive charge of the projectile.
  • This explosive is composed for example of a secondary explosive such as hexogen, octogen, pentrite, with a plastic binder such as nylon, polybutadiene, polyurethane, polyester or other.
  • This explosive charge can be manufactured according to one of the known methods by casting or compression depending on the type of binder.
  • Part 5 is made of prefragmented metal.
  • the pyrotechnic firing chain comprises, on the one hand, a percussion point 7 provided on the rear face of the head 1 as well as a secondary relay 8 inserted in said explosive charge and, on the other hand, a detonator 9 and a primary relay 10 housed in the front face of said collar 6.
  • Guide means are distributed over the two parts 4 and 5 in order to impose on them relative angular positions chosen as a function of their respective axial positions.
  • these means consist of a set of grooves, detailed below, provided in the body of part 4 and in a finger 11, mounted on the spring 12, provided in the flange 6.
  • Said set of grooves comprises two grooves 13 and 14 extending along two generatrices of the body 4 and here spaced 180 ° apart.
  • the groove 13 At its end closest to the head 1, the groove 13 is extended by a curved part 15 ending under the percussion tip 7. At its other end, the groove 13 is connected to the groove 14 by a connecting groove 16 .
  • a recess 17 separated from the latter by a thin wall 18.
  • Positioning bosses 19 and 20 are respectively provided in the bottom of the grooves 16 ( Figure 11) and 15 ( Figure 15).
  • the rear end of the part 4 is provided with a caudal part 21 serving to support, on the one hand, a shutter 22 (for example as described in EP-A-30,051 of the Application) and, on the other hand, to an external spring 23 also bearing on an annular stop 24 engaging an internal projection 25 of said part 5.
  • a deformable safety element 26 is provided between the end of the tail piece 21 and the annular stop 24.
  • the flange 6 has a recess 27 intended to accommodate the percussion point 7 when the projectile is in the being of FIG. 1 (transport).
  • the bore of the tail part 4 is extended by a corresponding passage 28 in the head 1, the front wall of which is provided with a circular weakening zone 29.
  • part 5 occupies an angular position, relative to the head 1 and part 4 such that the point 7 is located in the housing 27 ( Figure 3).
  • the projectile thus has a minimum bulk and its pyrotechnic chain is misaligned (see Figure 2).
  • the parts 4 and 5 are mutually locked in this position by engagement of the finger 11 behind a boss 30 (FIG. 5) provided on the bottom of the groove 14.
  • the launch can be carried out using a special propellant cartridge or an ordinary bullet cartridge.
  • the launch is carried out using a bullet ammunition, the latter will pass through the shutter 22 which will close behind it, which prevents the propellant gases from escaping.
  • the bullet passes the explosive charge 4 through the central channel, arrives in the passage 28 of the head 1 and escapes from the head 1 by breaking the zone 29.
  • the head assembly 1-that 4 receives all the propelling force and accelerates relative to the tail portion 5. This results in the permanent deformation of the security element 26, the compression of the spring 23 and the finger 11 enters the groove 13 (see figure 12).
  • part 5 catches up with the head-tail assembly 4, under the joint action of the trigger, of spring 23, of the difference in weight between the elements named (the first tail part being lighter than the second) and the difference of their respective aerodynamic coefficients.
  • the finger 11 runs through the groove 13. If, during this phase, an obstacle being encountered by the projectile, the finger 11 would fracture the thin wall 18 to arrive in the recess 17. In this position, the firing of the detonator 9 cannot take place, the latter not being aligned with the striker 7. This constitutes safety at the start of the trajectory.
  • the sensitivity is further increased thanks to the high mass of the part 5, carrying in the flange 6 the detonator 9.
  • This high mass is set in motion during the impact of the projectile and communicates all of its energy to the detonator when it strikes the striker 7.
  • the tail part 5 After firing the pyrotechnic chain, the tail part 5 gives rise to a quantity of fragments, under the effect of the detonation of the explosive charge 4.
  • a thin fracturable wall could be provided in the groove 16.
  • the projection 38 is engaged in its housing, so that the finger 35 of the ring 33 is engaged in the groove 14, the finger 36 overhanging the groove 13.
  • the inertia When firing, the inertia causes the compression of the spring 23, the repression of the finger 35 out of the groove 14 with rupture of the projection 38 and penetration of the finger 36 in the groove 13.
  • the projectile then behaves as in the previous example.
  • the presence of the spring 23 is not essential if the shapes and weights of the elements are judiciously chosen.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Claims (11)

1. Geschoss mit einem durch einen röhrenförmigen Schwanz (2) verlängerten Kopf (1), wobei dieser Schwanz (2) aus zwei ineinanderschiebenden Teilen besteht und zwar aus einem mit dem Kopf (1) verbundenen, hauptsächlich aus einer Sprengladung bestehenden ersten Teil (4) und einem um den ersten Schwanzteil (4) verschiebbaren zweiten Teil (5), dadurch gekennzeichnet, dass diese beiden Teile des Schwanzes (2), d.h. der erste Teil (4) und der zweite Teil (5), respektive einen ersten Teil (7, 8) und einen zweiten Teil (9, 10) einer Zündkette für das Zünden der vorgenannten Sprengladung tragen und über die beiden Teile (4, 5) des Schwanzes (2) verteilte Führungen (11, 13) vorgesehen sind, deren Aufgabe es ist denselben eine bestimmte gegenseitige Winkellage gemäss ihrer gegenseitigen Achsiallage zur erteilen, wobei diese Führungen (11, 13) bestehen einerseits aus wenigstens einer einzigen, gemäss einer Erzeugenden des Teiles (4) verlaufenden Nute (13) desselben und anderseits aus wenigstens einem einzigen Finger (11) des zweiten Schwanzteiles (5), wobei das in der Nähe des Kopfes (1) befindliche Ende dieser Nute (13) durch eine krummlinige Nute (15) verlängert ist und zwischen dieser krummlinigen Nute (15) und dem vorgenannten Kopf (1) eine durch eine Wand (18) von der Nute (15) getrennte Aussparung (17) vorgesehen ist und der vorgenannte Finger (11) diese Trennwand (18) zerstört und in diese Aussparung (17) hineindringt falls das Geschoss beim Abfeuern einem Hindernis begegnet.
2. Geschoss gemäss dem Anspruch 1, dadurch gekennzeichnet dass einer der beiden Schwanzteile (4, 5) eine zweite, gemäss einer Erzeugenden desselben verlaufende Nute (14) aufweist und die am weitesten vom Kopf (1) des Geschosses entfernten Enden der beiden Nuten (13, 14) durch eine Verbindungsnute miteinander verbunden sind.
3. Geschoss gemäss dem Anspruch 2, dadurch gekennzeichnet, dass der vorgenannte Finger (11) auf einer Feder (12) angeordnet ist und in den vorgenannten Nuten (14, 15, 16) Positioniernocken (19, 20, 30) vorgesehen sind.
4. Geschoss gemäss dem Anspruch 1, dadurch gekennzeichnet, dass es mit zwei auf einem Ring (33) sitzenden Fingern (33, 36) versehen ist, wobei dieser Ring (33) im anderen Teil des Schwanzes (2) querverschiebbar in bezuf auf die Achse dieses Teiles angeordnet ist.
5. Geschoss gemäss dem Anspruch 4, dadurch gekennzeichnet, dass die Verschiebung des vorgenannten Ringes (33) beim Abfuerfertigmachen des Geschosses durch die Zusammenwirkung zweier komplementärer Schrägebenen und zwar einer Schrägebene (35) der vorgenannten Finger und einer Schrägebene (37) eines Endkragens des ersten Schwanzteiles (4) gesichert ist.
6. Geschoss gemäss dem Anspruch 1, dadurch gekennzeichnet, dass der Hinterteil des ersten Schwanzteiles (4) mit einem elastischen Element (23) versehen ist, dessen Aufgabe es ist den zweiten Schwanzteil (5) nach dem Kopf (1) des Geschosses zurückzustossen.
7. Geschoss gemäss dem Anspruch 6, dadurch gekennzeichnet, dass es mit einem beim Abfeuern zerstörbren bzw. zertrümmerbaren Sicherheitselement (26) versehen ist, so dass das vorgenannte elastische Element (23) nur nach dem Abfeuern des Geschosses in Wirkung treten kann.
8. Geschoss gemäss dem Anspruch 1, dadurch gekennzeichnet, dass das aus dem Kopf (1) und dem ersten Schwanzteil (4) bestehende Ganzen (1, 4) leichter als der zweite Schwanzteil (5) ist.
9. Geschoss gemäss dem Anspruch 1, dadurch gekennzeichnet, dass die aerodynamischen Eigenschaften des aus dem Kopf (1) und dem ersten Schwanzteil (4) bestehenden Ganzen (1, 4) weniger günstig als die des zweiten Schwanzteiles (5) sind.
10. Geschoss gemäss dem Anspruch 1, dadurch gekennzeichnet, dass der vorgenannte zweite Schwanzteil (5) aus einem vorzersplitterten Metall besteht.
11. Geschoss gemäss dem Anspruch 1, dadurch gekennzeichnet, dass der erste Teil der Zündkette zus einem hinten am Kopf (1) befestigten Schlagbolzen (7) und einem in der vorgenannten Sprengladung versenkten Sekundärrelais (8) und der zweite Teil der Zündkette aus einer Zündkapsel (9) und einem Primärrelais (10) besteht, wobei diese beiden letztgenannten Teil (9, 10) durch den zweiten Schwanzteil (5) getragen werden.
EP80201098A 1979-11-30 1980-11-20 Teleskopierbares Geschoss Expired EP0030052B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80201098T ATE4841T1 (de) 1979-11-30 1980-11-20 Teleskopierbares geschoss.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BE2058240 1979-11-30
BE2/58240A BE880348A (fr) 1979-11-30 1979-11-30 Projectile telescopique
BE2058794 1980-10-10
BE2058794 1980-10-10

Publications (2)

Publication Number Publication Date
EP0030052A1 EP0030052A1 (de) 1981-06-10
EP0030052B1 true EP0030052B1 (de) 1983-09-28

Family

ID=25661741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80201098A Expired EP0030052B1 (de) 1979-11-30 1980-11-20 Teleskopierbares Geschoss

Country Status (4)

Country Link
US (1) US4448129A (de)
EP (1) EP0030052B1 (de)
BE (1) BE885618R (de)
DE (1) DE3065083D1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535045A1 (fr) * 1982-10-26 1984-04-27 Commissariat Energie Atomique Projectile declencheur d'avalanches
BE905563A (fr) * 1986-10-07 1987-04-07 Herstal Sa Grenade telescopique.
BE1003635A3 (fr) * 1989-12-07 1992-05-12 Herstal Sa Grenade a usage multiple.
BE1003971A3 (fr) * 1990-11-14 1992-07-28 Herstal Sa Perfectionnements aux projectiles.
IL103539A (en) * 1992-10-25 1995-11-27 Etzion Metal Works Device for preventing accidental discharge of a bullet from a firearm
WO1996010159A1 (en) * 1992-10-25 1996-04-04 Etzion Metal Works A device for preventing accidental discharging of a bullet from a firearm
IL122886A (en) 1998-01-09 2001-01-11 Mofet Etzion Device for preventing the accidental discharge of a bullet from a firearm
NO995142A (no) * 1999-06-04 2000-10-16 Nammo Raufoss As Fremdriftsanordning for et prosjektil i et missil
US6289623B1 (en) 1999-06-21 2001-09-18 Mofet Etzion Agricultural Association Ltd. Device for reducing the danger of harm caused by accidental discharge of a bullet from a firearm
US6581521B1 (en) 2002-08-26 2003-06-24 Robert G. Dixon Reusable gas grenade canister
US7380504B2 (en) * 2005-08-16 2008-06-03 Raytheon Company Telescoped projectile
WO2008118185A2 (en) * 2006-08-25 2008-10-02 Mlm Internat Reduced collateral damage bomb (rcdb) and system and method of making same
US8191479B2 (en) * 2006-12-20 2012-06-05 Ruhlman James D Reduced collateral damage bomb (RCDB) including fuse system with shaped charges and a system and method of making same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE177271C (de) * 1905-06-10
DE340814C (de) * 1914-11-27 1921-09-17 Fried Krupp Akt Ges Aufschlagzuender, der je nach dem Widerstande des Zieles selbsttaetig entweder mit oder ohne Verzoegerung wirkt
FR945081A (fr) * 1946-04-15 1949-04-25 Perfectionnements aux fusées à empennage coulissant
CH361738A (fr) * 1959-05-21 1962-04-30 Brevets Aero Mecaniques Projectile destiné à être lancé par une arme à feu et comprenant un moteur auxiliaire d'autopropulsion
EP0030051A1 (de) * 1979-11-30 1981-06-10 FABRIQUE NATIONALE HERSTAL en abrégé FN Société Anonyme Gewehrgranate

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE310610C (de) *
DE79094C (de) * R. DIETRICH, Concordiahütte b. Bendorf a. Rh Sprenggeschofs mit Aufschlagzünder
US1463993A (en) * 1922-04-17 1923-08-07 Burt Franklin Thomas Rifle grenade
US2712284A (en) * 1951-06-19 1955-07-05 Haroid E Thomas Delayed arming safety fuse
US2883781A (en) * 1957-10-23 1959-04-28 Earle M Harvey Combination stabilizer, recoil break, flash hider, and grenade launcher for a firearm
US3675579A (en) * 1970-02-25 1972-07-11 Us Navy Pressure actuated safety and arming device
US3820464A (en) * 1973-03-09 1974-06-28 Us Navy Variable sized fragment explosive projectile
US3886841A (en) * 1973-05-29 1975-06-03 Matthew S Smith Rocket powered round
US4008667A (en) * 1973-12-13 1977-02-22 The L.O.M. Corporation Controlled range bullet
US4029014A (en) * 1976-02-23 1977-06-14 Thiokol Corporation Safety igniter for flares

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE177271C (de) * 1905-06-10
DE340814C (de) * 1914-11-27 1921-09-17 Fried Krupp Akt Ges Aufschlagzuender, der je nach dem Widerstande des Zieles selbsttaetig entweder mit oder ohne Verzoegerung wirkt
FR945081A (fr) * 1946-04-15 1949-04-25 Perfectionnements aux fusées à empennage coulissant
CH361738A (fr) * 1959-05-21 1962-04-30 Brevets Aero Mecaniques Projectile destiné à être lancé par une arme à feu et comprenant un moteur auxiliaire d'autopropulsion
EP0030051A1 (de) * 1979-11-30 1981-06-10 FABRIQUE NATIONALE HERSTAL en abrégé FN Société Anonyme Gewehrgranate

Also Published As

Publication number Publication date
US4448129A (en) 1984-05-15
DE3065083D1 (en) 1983-11-03
BE885618R (fr) 1981-04-10
EP0030052A1 (de) 1981-06-10

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