EP0401114A1 - Vorrichtung zum Halten eines Geschosses in bezug auf das Gehäuse einer teleskopartigen Munition - Google Patents

Vorrichtung zum Halten eines Geschosses in bezug auf das Gehäuse einer teleskopartigen Munition Download PDF

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Publication number
EP0401114A1
EP0401114A1 EP90401448A EP90401448A EP0401114A1 EP 0401114 A1 EP0401114 A1 EP 0401114A1 EP 90401448 A EP90401448 A EP 90401448A EP 90401448 A EP90401448 A EP 90401448A EP 0401114 A1 EP0401114 A1 EP 0401114A1
Authority
EP
European Patent Office
Prior art keywords
projectile
holding device
ring
cap
integral
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.)
Granted
Application number
EP90401448A
Other languages
English (en)
French (fr)
Other versions
EP0401114B1 (de
Inventor
Michel Desevaux
Pierre Ducros
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
Direction General pour lArmement DGA
Giat Industries SA
Etat Francais
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 Direction General pour lArmement DGA, Giat Industries SA, Etat Francais filed Critical Direction General pour lArmement DGA
Publication of EP0401114A1 publication Critical patent/EP0401114A1/de
Application granted granted Critical
Publication of EP0401114B1 publication Critical patent/EP0401114B1/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
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/18—Caseless ammunition; Cartridges having combustible cases
    • F42B5/184—Caseless ammunition; Cartridges having combustible cases telescopic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • 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
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/045—Cartridges, i.e. cases with charge and missile of telescopic type

Definitions

  • the present invention relates to a device for holding a projectile relative to the casing of a telescoped type of munition.
  • Telescoped ammunition which has been the subject of numerous developments in recent years, is characterized by the fact that the projectile is located inside the casing containing the propellant charge instead of being projecting relatively to the latter.
  • the main advantage of such an arrangement is that it allows, for equal ballistic performances, to define shorter munitions which allows the design of more compact weapons or at higher rates of fire.
  • Such ammunition is complex because it requires the assembly of several fine mechanical parts, moreover the transition between the combustion of the first charge and that of the second charge is difficult to control, which risks reducing the efficiency of the charge. therefore propellant ammunition performance.
  • Patent US4770098 proposes an ammunition in which a ring comes to close the front part of the sleeve, this plastic ring has a bore whose diameter is slightly smaller than that of the projectile.
  • the ring also makes it possible to position the projectile relative to the casing therefore also relative to the barrel of the weapon, a certain number of holes make it possible to play on the stiffness of the ring and thus on the minimum pressure necessary for setting in motion of the projectile .
  • Such a concept of ammunition is particularly interesting because it makes it possible to produce ammunition of the telescoped type with a single propellant charge.
  • the ring is not sufficient to hold the projectile and this is how radial ribs are provided on the internal surface of the sleeve, the function of which is to support the projectile by its rear part.
  • Patent GB1310607 shows a telescoped munition comprising a casing comprising radial ribs ensuring the support of the projectile, as well as a plug ensuring sealing and allowing the projectile to be held axially relative to the casing.
  • the projectile is placed in a bore of this solid charge and is held radially by it, a washer ensures the axial positioning of the projectile and is bonded to the propellant charge.
  • the washer is not secured to the projectile, which implies that in the event of a fracture of the propellant blocks, following mechanical stresses of placing in position, the projectile will no longer be held radially.
  • Patent US4015527 shows an ammunition also comprising several molded propellant charge blocks arranged in a combustible envelope which is not closed by a ring.
  • the subject of the invention is a device for holding a projectile relative to the casing of a telescoped type of ammunition, comprising at least one annular ring fitted to the casing and in which the projectile is disposed, and a cap. fitted inside the ring, holding device characterized in that the cap is integral with the projectile at the front part of the latter.
  • the cap may be integral with the shoe.
  • the cap may be made integral with the projectile at the level of the ballistic warhead.
  • the holding device according to the invention may also include means ensuring the support of the projectile on the envelope at its rear part.
  • these support means comprise a wedge secured to the projectile at its rear part.
  • the means ensuring the support of the projectile comprise at least three tabs, integral with the ring at its rear part, regularly spaced from one another and extending in an axial direction.
  • the envelope has at least one bulge at its internal surface and the wedge comes to bear on this bulge.
  • the wedge will preferably include at least three arms regularly spaced from each other, it may be integral with the shoe or the tail.
  • a telescoped munition 1 of the type described in patent US4770098 comprises a casing 2, preferably made of plastic material, and closed at a rear end by a base 5, also made of plastic material, which carries an ignition device 6 of known type.
  • the envelope contains a propellant charge 7, it is closed at its front end by an annular ring 3 also made of plastic.
  • the ring 2 is thus a means for holding the projectile relative to the envelope, therefore relative to the weapon. As such, it therefore ensures correct positioning of the projectile opposite the barrel of the weapon (not shown).
  • a projectile 4 which is here of the gyrostabilized type, is disposed in a housing 9, cylindrical or slightly conical, of the ring.
  • the sealing belt 8 has a diameter greater than that of the cylindrical housing, and thus achieves a localized deformation of the ring.
  • Figure 2 shows a telescoped munition integrating a first embodiment of the holding means according to the invention.
  • the length of the ring 3 has been reduced, which has made it possible to increase the mass of propellant charge.
  • the rear face of the ring which is in contact with the load, thus arrives substantially at the level of the conical front part of the projectile.
  • the projectile 4 carries at its front part a cap 10, which has an internal profile corresponding to the external profiles of the ballistic warhead 11 and of the external surface 12 of the front part of the projectile.
  • the cap 10 is made integral with the projectile by bonding, it comprises an internal crown 10a and an external crown 10b connected by radial partitions 10c and by a conical partition 10d (see Figure 2A), the cap is exploded at the outlet of the tube of the weapon under the effect of centrifugal force.
  • the cap 10 is adjusted tightly in the cylindrical housing 9 of the ring 3, this so as to ensure the initial confinement of the propellant charge as well as the gas tightness before the forcing of the belt 8 inside the cylindrical housing 9 .
  • Such a configuration made it possible to maintain the projectile with a ring of reduced dimensions, and therefore with a maximum propellant charge mass, while retaining a socket with a cylindrical internal profile.
  • the ring 3 will preferably have a length as it is in contact with at least 50% of the external surface of the cap.
  • FIG. 3 shows another embodiment of the holding means according to the invention.
  • the front ring has the minimum length compatible with its resistance to pressure.
  • the holding means here comprises, in addition to the ring 3 and the cap 10, a shim 13 made of plastic secured to the projectile 4 at its rear part.
  • This wedge has three arms 13a, 13b, 13c regularly spaced (see Figure 3B) which are formed by the juxtaposition of three identical arcs.
  • the wedge could also be in one piece.
  • the wedge 13 completes the front cover, the contact surface with the ring is insufficient to avoid possible tilting of the projectile.
  • the wedge / cap / ring assembly constitutes the means for holding the projectile relative to the shell of the ammunition.
  • Figure 3A shows the projectile when it leaves the envelope, it is then in the barrel of the weapon 21 shown schematically.
  • the wedge 13 is stopped then broken by the ring 3, it is ejected from the envelope after the projectile without disturbing the trajectory thereof or the operation of the weapon.
  • Figure 4 shows another embodiment of the invention, in which the ring 3 has at its rear part three legs 14 regularly spaced (see Figure 4A). The projectile is then supported at its front part by the cap 10, and at its rear part by the lugs 14 of the ring 3.
  • Figure 5 shows another variant of the invention in which the casing 2 of the ammunition carries three bulges 19 regularly distributed, the projectile is then still supported at its front part by the cap 10, and at its part rear by the bulges 19 of the casing 2 (see Figure 5A).
  • FIGS. 6 to 8 show other embodiments of the holding means according to the invention intended for a telescoped munition in which the projectile 4 is of the sub-calibrated type stabilized by a stabilizer 17, and comprises a sub-projectile 16, integral with a shoe 15, consisting of several elements (in general three), a known sealing means not shown, for example a silicone coating, ensures gas tightness at the separations between the elements of the shoe.
  • the cap 10 is integral with the shoe 15 at a circular groove 18 thereof.
  • the cap provides sealing against propellant gases inside the barrel of the weapon and thus plays the role of belt.
  • the cap 10 made of plastic is injected onto the aluminum alloy shoe already equipped with the sub-projectile 16.
  • the ring 3 will preferably have a length such that it is in contact with at least 50% of the external surface of the cap.
  • the projectile shown in Figure 6 has a shoe of the pusher type, in order to gain even more volume for the propellant charge it is possible to design an ammunition in which the shoe is of the "tractor" type, that is to say as the resultant of the forces exerted on the shoe by the propellant gases has a point of application well in front of the center of gravity of the sub-projectile.
  • projectiles driven by a tractor shoe are very sensitive to transverse pressure waves and in this case it will be essential to provide a wedging means at the rear part of the projectile so as to prevent it from tilting, regardless of the length of the projectile. relative contact between the ring and the cap.
  • annular block 13 made of plastic material and comprising three regularly spaced arms 13a, 13b, 13c is made integral with the shoe at the rear part of the latter, (see FIG. 7a).
  • the shoe carries for this purpose three extensions 20 on which the shim 13 adjusts.
  • the connection between the shoe and the shim will be made by threading, gluing or tight adjustment.
  • the wedge will be broken when the extensions pass inside the ring, the wedge will then be ejected following the shoe and will not disturb the trajectory of the sub-projectile.
  • the extensions 20 will guide the projectile inside the barrel of the weapon.
  • the fit is of the tight type and the annular part of the shim 13 therefore has here a conical internal profile 22 on which the external edges of the fins of the tail unit 17 come to bear.
  • the wedge has, as in the previous variant, three regularly spaced arms 13a, 13b, 13c (see Figure 8A), the guidance is thus ensured without the need to reduce the volume of the propellant charge.
  • the mounting of the wedge on the tail will be carried out by passing the sub-projectile inside the latter and thereby achieving a deformation of the wedge by the fins.
  • the wedge will be further broken during the passage inside the ring and it will be ejected following the shoe, without disturbing the trajectory of the sub-projectile.
  • the projectile, carrying cap and ring and possibly one or more shims is first made integral with the envelope, then the propellant charge is introduced from the rear of the envelope, the base being put in place last. .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP90401448A 1989-06-01 1990-05-31 Vorrichtung zum Halten eines Geschosses in bezug auf das Gehäuse einer teleskopartigen Munition Expired - Lifetime EP0401114B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8907231A FR2647890A1 (fr) 1989-06-01 1989-06-01 Dispositif de maintien d'un projectile relativement a l'enveloppe d'une munition telescopee
FR8907231 1989-06-01

Publications (2)

Publication Number Publication Date
EP0401114A1 true EP0401114A1 (de) 1990-12-05
EP0401114B1 EP0401114B1 (de) 1993-07-28

Family

ID=9382249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90401448A Expired - Lifetime EP0401114B1 (de) 1989-06-01 1990-05-31 Vorrichtung zum Halten eines Geschosses in bezug auf das Gehäuse einer teleskopartigen Munition

Country Status (4)

Country Link
US (1) US5163165A (de)
EP (1) EP0401114B1 (de)
DE (1) DE69002402T2 (de)
FR (1) FR2647890A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725509A1 (fr) * 1994-10-06 1996-04-12 France Etat Cartouche pour projectile a energie cinetique du type fleche

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2679991B1 (fr) * 1991-07-31 1993-10-29 Giat Industries Perfectionnements apportes a une munition en particulier du type telescope.
FR2702553B1 (fr) * 1993-03-12 1995-04-28 Giat Ind Sa Munition de type télescopée.
FR2717569B1 (fr) * 1994-03-16 1996-05-10 Giat Ind Sa Dispositif d'allumage d'une charge propulsive.
FR2763392B1 (fr) * 1997-05-15 1999-06-11 Giat Ind Sa Boitier pour charge propulsive
US20050016413A1 (en) * 2003-07-25 2005-01-27 Giat Industries Sub-calibred projectiles with multiple supports
US10508891B2 (en) * 2017-12-12 2019-12-17 Quint Gregory Tibeau Stoppage-inducing ammunition cartridge

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575112A (en) * 1968-09-30 1971-04-13 Hercules Inc Segmented propellant charge for telescoped caseless ammunition
FR2131393A5 (de) * 1971-03-29 1972-11-10 Oerlikon Buehrle Ag
GB1310607A (en) * 1969-04-19 1973-03-21 Lutz E Caseless ammunition
US4015527A (en) * 1976-03-10 1977-04-05 The United States Of America As Represented By The Secretary Of The Air Force Caseless ammunition round with spin stabilized metal flechette and disintegrating sabot
EP0152492A1 (de) * 1984-01-31 1985-08-28 Rheinmetall GmbH Munition-Einheit für Rohrwaffen
FR2606500A1 (fr) * 1986-06-05 1988-05-13 Sauvestre Jean Claude Munition de chasse a volume de combustion augmente

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046890A (en) * 1959-09-11 1962-07-31 Dardick Corp Ammunition for open chamber guns
DE2100434A1 (de) * 1970-05-02 1972-07-20 Schirneker, Hans Ludwig, Klaus (Österreich) Handfeuerwaffe und Munition für dieselbe
DE2028876A1 (de) * 1970-06-11 1972-03-09 Hilti Ag Bolzen mit Metallrondelle
DE2418049A1 (de) * 1974-04-13 1975-10-23 Schirneker Hans Ludwig Ing Feuerwaffe od.dgl. und munition fuer dieselbe
US3978792A (en) * 1975-04-25 1976-09-07 The United States Of America As Represented By The Secretary Of The Army Projectile-to-cartridge case attachment
DE2828251C1 (de) * 1978-06-28 1985-10-03 Rheinmetall GmbH, 4000 Düsseldorf Patronierte Munition mit Geschoss und verbrennbarer oder teilverbrennbarer Huelse
US4770098A (en) * 1985-04-03 1988-09-13 Ares, Inc. Telescoped ammunition round
USH61H (en) * 1985-05-31 1986-05-06 The United States Of America As Represented By The Secretary Of The Army Self supporting cartridge and weapon system therefor
US4967668A (en) * 1989-10-16 1990-11-06 Honeywell Inc. Puller sabot for long rod projectiles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575112A (en) * 1968-09-30 1971-04-13 Hercules Inc Segmented propellant charge for telescoped caseless ammunition
GB1310607A (en) * 1969-04-19 1973-03-21 Lutz E Caseless ammunition
FR2131393A5 (de) * 1971-03-29 1972-11-10 Oerlikon Buehrle Ag
US4015527A (en) * 1976-03-10 1977-04-05 The United States Of America As Represented By The Secretary Of The Air Force Caseless ammunition round with spin stabilized metal flechette and disintegrating sabot
EP0152492A1 (de) * 1984-01-31 1985-08-28 Rheinmetall GmbH Munition-Einheit für Rohrwaffen
FR2606500A1 (fr) * 1986-06-05 1988-05-13 Sauvestre Jean Claude Munition de chasse a volume de combustion augmente

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725509A1 (fr) * 1994-10-06 1996-04-12 France Etat Cartouche pour projectile a energie cinetique du type fleche

Also Published As

Publication number Publication date
FR2647890A1 (fr) 1990-12-07
FR2647890B1 (de) 1994-04-22
US5163165A (en) 1992-11-10
DE69002402D1 (de) 1993-09-02
EP0401114B1 (de) 1993-07-28
DE69002402T2 (de) 1994-01-13

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