EP0263548B1 - Grenade télescopique - Google Patents

Grenade télescopique Download PDF

Info

Publication number
EP0263548B1
EP0263548B1 EP87201724A EP87201724A EP0263548B1 EP 0263548 B1 EP0263548 B1 EP 0263548B1 EP 87201724 A EP87201724 A EP 87201724A EP 87201724 A EP87201724 A EP 87201724A EP 0263548 B1 EP0263548 B1 EP 0263548B1
Authority
EP
European Patent Office
Prior art keywords
tail
head
mobile part
case
telescopic
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
EP87201724A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0263548A1 (fr
Inventor
André M. 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.)
CESSIONE;FABRIQUE NATIONALE NOUVELLE HERSTAL
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
Application filed by FN Herstal SA filed Critical FN Herstal SA
Publication of EP0263548A1 publication Critical patent/EP0263548A1/fr
Application granted granted Critical
Publication of EP0263548B1 publication Critical patent/EP0263548B1/fr
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
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/28—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
    • F42C15/30—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids of propellant gases, i.e. derived from propulsive charge or rocket motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
    • 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
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/18—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved
    • F42C15/188—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a rotatable carrier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/28—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
    • F42C15/31—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids generated by the combustion of a pyrotechnic or explosive charge within the fuze

Definitions

  • This invention relates to a telescopic grenade of the type having a head extended by a tubular tail containing an explosive charge as well as a firing chain of the latter and in which said tail is made of two telescopic tubular parts, one of which is integral of said head and carries with the latter two telescopic tubular parts, one of which is integral with said head and carries with the latter two parts of said firing chain and of which the other tubular, mobile part carries the remaining part of the latter, this grenade being provided with guide means comprising at least one groove extended by a curved groove and a finger distributed on the one hand on said movable tubular part and on the other hand on the whole formed by the head and the tubular part integral with the head in order to assign an angular position to these tubular parts as a function of their relative axial position, the mobi part the tail having towards its front end an element carrying the finger cooperating with the grooves and carrying the part of the firing chain carried by this movable part, the tail also comprising
  • the guide means comprise two longitudinal grooves and an oblique groove connecting these grooves in the tubular part which is integral with the head, the finger fixed on the movable part of the tail crossing one of the longitudinal grooves during the extension of the tail before launching.
  • a safety element limits this extension, this safety element being deformed and put out of play during launching by the acceleration of the head and of the tubular part integral with it relative to the mobile part.
  • the present invention relates to such a projectile having considerable advantages, adding to the advantages of already known projectiles.
  • the invention aims to provide a very low grenade, insensitive to shocks with a very simple explosive charge in robust and easily allowing to obtain a controllable impact sensitivity and safety at the start of the trajectory.
  • the element carrying the finger is a box which is immobilized on the movable part of the tail by means which can be put out of play under the effect of propellant gases, the box being axially slidable on the movable part a once the aforementioned means immobilizing the housing have been put out of play and the means limiting movement until the moment of impact while allowing the housing to pass in its sliding position and the parts of the tail are provided with a path for the propellants connecting in the extended position of the tail the interior of the movable part of the tail and a circular chamber formed between the housing and the mobile part and limited by a part of the housing at the front and a part of the part movable at the rear, the propellant gases reaching this chamber by this path, causing an axial translation of the housing relative to the movable part of the tail and at the same time the setting aside of the immobi means reading the case.
  • the grenade has means determining the exact relative position of the parts of the elongated tail, these means consisting of at least one radial chamber provided in a sleeve forming the rear end of the integral part of the head, this chamber forming a housing for a ball biased by a spring, said ball being able to cooperate with a notch provided for this purpose in the inner wall of said movable part of the tail.
  • the grenade has means preventing an untimely detonation, these means consisting of a stop against which the housing in the sliding position relative to the movable part can bear, this stop being urged by a spring whose tension is decisive for the resistance to be encountered by the projectile before the percussion point forming part of the fueing chain can penetrate the detonator.
  • the projectile represented in the figures comprises a head 1 and a telescopic tubular tail 2 with tail section 3.
  • the tail 2 is produced in two parts 4-5 of which part 4 is integral with head 1 and of which part 5 can slide around the first one.
  • the head 1 has inside a plate 6 provided with a percussion point 7 and a device 8 preventing an involuntary detonation.
  • the head 1 is fixed to the end of a sheath 9, the other end of which is provided with a sleeve 10.
  • a body 11 constituting the explosive charge of the projectile.
  • This body 11 has a single longitudinal groove 12 extending, at its end closest to the head 1, by a curved part 13.
  • a chamber 16 in which is housed a spring 17 acting against a shoulder 18 of the sleeve 10.
  • the latter has a circular groove 19 communicating, in the position of FIG. 2, with radial holes 20 provided in said part 5 and communicating themselves with a circular chamber 21 in the housing 15.
  • radial holes 20 provided in said part 5 and communicating themselves with a circular chamber 21 in the housing 15.
  • the sleeve 10 has two radial chambers 23- 24 each accommodating a ball 25 urged by a spring 26.
  • Said part 5 of the tail 2 has two notches 27-28 with which the balls 25 can cooperate.
  • the housing 15 is fixed to said part 5 by means of a deformable cup 29 allowing, after deformation, a translation of the housing 15 relative to the part 5.
  • an elastic locking ring 36 which can cooperate with a groove 37 in part 5.
  • the firing pyrotechnic chain comprises the percussion point 7, a detonator 30 and a relay 31 embedded in said explosive charge 11.
  • the percussion point 7 as well as the relay 31 are part of the head 1, while the detonator 30 is housed in a notch in the housing 15 which, in turn, is part of the telescopic tubular tail 2.
  • Said device 8 preventing an inadvertent detonation of the projectile in flight consists of a damper 32, the damping of which is determined by a spring 33.
  • the head 1 is extended by a protective tube 34 for the explosive charge 11.
  • the part 5 with the housing 15 occupies an angular position relative to the head 1 and the part 4 in such a way that the point 7 is misaligned with respect to the detonator 30, any relative movement of the part 5 relative to the head 1 being prevented by the contact of an extension 35 against the plate 6.
  • the extension 35 can be fixed either on said part 5 or on the plate 6.
  • the projectile is ready to be engaged on the sleeve at the end of the barrel of a rifle used for its launching.
  • the propellant gases enter, through the grooves 22, in the circular groove 19 and, thus, through the holes 20 in the groove 21.
  • the housing 15 By the effect of the propellant gases on the walls of this groove 21, the housing 15 , by deforming the bowl 29, moves relative to the part 5.
  • the elastic ring 36 falls in the groove 37, thus ensuring the locking of the housing 15 relative to the part 5.
  • the balls 25 move in the two radial chambers 23-24 against the force of the springs 26, the latter undergoing a deformation such that they become inoperative.
  • the device 8 prevents any further progression of the part 5 until impact.
  • the spring 33 is calculated to avoid inadvertent detonation, for example by contact of the projectile with tropical rain, etc.
  • part 5 Upon impact, the high mass of part 5 is set in motion and communicates all of its energy to the detonator when it strikes the striker 7.
  • the security of the trajectory flow rate of the projectile according to the invention is controllable by the presence of the tube 34 with which the housing 15 cooperates. Indeed, during the path of the latter in the tube 34, it works there like a dash-pot, braking in some way said path by evacuating through a calibrated orifice the air present in the free volume 38, the latter being created when the projectile is in the position shown in FIG. 2.
  • the calibrated orifice can be produced by the radial clearance between the outside diameter of the housing 15 and the internal diameter of the tube 34.
  • said springs 26 will be calculated in such a way that they remain deformed after launching the projectile in order to avoid any friction of the balls 25 on the internal wall of part 5.
  • a make-up charge 40 can be accommodated in the free volume constituted by the ball-passing plug 41 and the sleeve 10.
  • FIG. 10 shows an embodiment in which is interposed, between the springs 26, a bar 39 made of a frangible material which can be destroyed by the passage of the ball in order to make the support for the springs 26 disappear.
  • FIG. 11 shows an embodiment in which the groove 12 is provided in the tube 34, while the groove 13 is provided in an extension 42 of the plate 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Toys (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Tents Or Canopies (AREA)
EP87201724A 1986-10-07 1987-09-10 Grenade télescopique Expired - Lifetime EP0263548B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2/61065A BE905563A (fr) 1986-10-07 1986-10-07 Grenade telescopique.
BE2061065 1986-10-07

Publications (2)

Publication Number Publication Date
EP0263548A1 EP0263548A1 (fr) 1988-04-13
EP0263548B1 true EP0263548B1 (fr) 1991-01-23

Family

ID=3865833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87201724A Expired - Lifetime EP0263548B1 (fr) 1986-10-07 1987-09-10 Grenade télescopique

Country Status (9)

Country Link
US (1) US4846070A (enrdf_load_stackoverflow)
EP (1) EP0263548B1 (enrdf_load_stackoverflow)
KR (1) KR920006526B1 (enrdf_load_stackoverflow)
AU (1) AU598306B2 (enrdf_load_stackoverflow)
BE (1) BE905563A (enrdf_load_stackoverflow)
DE (1) DE3767642D1 (enrdf_load_stackoverflow)
GR (2) GR880300143T1 (enrdf_load_stackoverflow)
IN (1) IN167867B (enrdf_load_stackoverflow)
SG (1) SG9192G (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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.
BE1005559A3 (fr) * 1991-02-14 1993-10-26 Herstal Sa Dispositif de securite, respectivement retardateur, pour projectile.
US5686692A (en) * 1996-09-30 1997-11-11 The United States Of America As Represented By The Secretary Of The Navy Single fuse follow-through grenade
RU2284008C1 (ru) * 2005-03-29 2006-09-20 Станислав Борисович Чернов Надкалиберная ружейная граната
KR101566160B1 (ko) * 2013-08-23 2015-11-05 주식회사 한화 탄자트랩을 이용한 총류탄

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1463993A (en) * 1922-04-17 1923-08-07 Burt Franklin Thomas Rifle grenade
FR1394582A (fr) * 1963-06-14 1965-04-02 Mefina Sa Grenade à main
US3490373A (en) * 1968-05-09 1970-01-20 Thiokol Chemical Corp Self-destructing rocket propelled grenade
BE803328R (fr) * 1973-01-11 1974-02-08 Fn Fusee pour grenade a fusil
US3960084A (en) * 1973-08-08 1976-06-01 Fabrique Nationale Herstal S.A. En Abrege Fn Fuse for rifle-grenade
US4023499A (en) * 1975-01-07 1977-05-17 Fabrique Nationale Herstal S.A. Fuse for rifle-grenade
BE885618R (fr) * 1979-11-30 1981-04-10 Herstal Sa Projectile telescopique
US4395836A (en) * 1980-11-13 1983-08-02 Brunswick Corporation Release apparatus for jet-propelled projectiles
ATA292583A (de) * 1983-08-16 1993-05-15 Noricum Maschinenbau Handel Geschosswaffe, insbesondere panzerbrechende waffe

Also Published As

Publication number Publication date
GR3001529T3 (en) 1992-11-23
BE905563A (fr) 1987-04-07
SG9192G (en) 1992-03-20
US4846070A (en) 1989-07-11
KR920006526B1 (ko) 1992-08-07
GR880300143T1 (en) 1989-01-31
DE3767642D1 (de) 1991-02-28
AU7937287A (en) 1988-04-14
EP0263548A1 (fr) 1988-04-13
AU598306B2 (en) 1990-06-21
KR880005438A (ko) 1988-06-29
IN167867B (enrdf_load_stackoverflow) 1990-12-29

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