EP0250329A1 - Munitionstreibladung, insbesondere für Pfeilgeschosse grossen Kalibers - Google Patents

Munitionstreibladung, insbesondere für Pfeilgeschosse grossen Kalibers Download PDF

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Publication number
EP0250329A1
EP0250329A1 EP87401380A EP87401380A EP0250329A1 EP 0250329 A1 EP0250329 A1 EP 0250329A1 EP 87401380 A EP87401380 A EP 87401380A EP 87401380 A EP87401380 A EP 87401380A EP 0250329 A1 EP0250329 A1 EP 0250329A1
Authority
EP
European Patent Office
Prior art keywords
propellant charge
holding means
charge
revolution
socket
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
EP87401380A
Other languages
English (en)
French (fr)
Other versions
EP0250329B2 (de
EP0250329B1 (de
Inventor
Jean-Claude Sauvestre
Gérard Raymondie
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9336472&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0250329(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Direction General pour lArmement DGA, Giat Industries SA, Etat Francais filed Critical Direction General pour lArmement DGA
Priority to AT87401380T priority Critical patent/ATE50359T1/de
Publication of EP0250329A1 publication Critical patent/EP0250329A1/de
Application granted granted Critical
Publication of EP0250329B1 publication Critical patent/EP0250329B1/de
Publication of EP0250329B2 publication Critical patent/EP0250329B2/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
    • F42B5/16—Cartridges, i.e. cases with charge and missile characterised by composition or physical dimensions or form of propellant charge, with or without projectile, or powder

Definitions

  • the invention relates to a propellant charge consisting of grains of powder, intended for the propulsion of projectiles in particular with kinetic energy under calibrated of the large caliber arrow type.
  • These munitions are known to perforate targets by mechanical effect thanks to the kinetic energy delivered on impact. Therefore, in a given weapon system, therefore for a known firing pressure, this ammunition is asked to have the highest possible initial speed.
  • studies of these munitions lead to the finest possible optimization of the projectile itself and of each sub-assembly making up its propulsive system (powder, ignition, etc.).
  • a particular problem is linked to the fact that the rear part of the arrow projectile, also called the towed part, receives a tail to allow its stabilization on the trajectory.
  • the mechanical stresses exerted on this element during the combustion phase of the propellant powder can be summarized as follows: - tensile stresses located in the axis of the projectile and generated by the force of inertia. - bending (or transverse) stresses, the origin of which may be due to the non-symmetrical displacement of the powder bed and / or to the generation of transverse pressure waves originating from ignition faults (non-symmetrical ignition for example).
  • the mechanical strength of the towed part is essentially linked to the value of these transverse stresses.
  • the maximum value of these constraints must be limited to the maximum so that the towed part retains its integrity at the outlet of the launching tube.
  • One of the aims of the invention consists in solving the problem of the mechanical strength of the tail unit by reducing the transverse stresses to which it is subjected.
  • the subject of the invention is a propellant charge consisting of powder, for example, in the form of grains intended for the propulsion of projectiles in particular with kinetic energy under calibrated of the large caliber arrow type and placed inside a socket of revolution.
  • metallic or not comprising at one end a base and at the other end the projectile, loading characterized in that it comprises holding means ensuring its compactness and its symmetry with respect to the axis of revolution of the sleeve
  • the holding means makes it possible to compact the propellant charge: - towards the base of the socket - and / or towards the projectile - And / or around the axis of revolution of the sleeve.
  • the holding means can consist of: - by a binder placed between the powder grains, - by a material such as cardboard, nitrocellulose or expanded polystyrene. - by a perforated metal sheet.
  • the holding means consists of a wedging arranged: - at the rear of the projectile so that the load is applied towards the base of the case. - And / or at the base of the case so that the load is applied towards the projectile.
  • the holding means consists of an envelope of revolution, which may be cylindrical, placed longitudinally in the sleeve so that the load is placed inside or outside of this envelope.
  • Figure 1 shows a munition according to the state of the art station in a launch tube 1; it consists of an arrow sub-projectile 2 comprising an elongated bar made of heavy material and a stabilizing stabilizer 3.
  • the arrow sub-projectile 2 is guided and propelled into the launching tube 1 by a shoe 4.
  • the ammunition also includes a socket 5 to the base of which is fixed a primer igniter tube 6. This socket contains the propellant charge 7 consisting of loose powder.
  • the powder forms, by gravitation, an inclined powder bed 8 making the propellant charge asymmetrical.
  • the primer-carrying tube 6 ignites the propellant charge 7 by developing pressure waves moving in the direction represented by the arrow 9.
  • the pressure wave is disturbed by the asymmetry of the propellant charge and generated a force T1 substantially perpendicular to the powder bed.
  • This force T1 combined with the traction force T2, due to the inertia of the towed part of the projectile, subjects the tail of the arrow to a resulting force T3 which in the particular case of this figure is substantially perpendicular to the axis of revolution of ammunition.
  • This effort T3 tends to bend the projectile, which can have harmful consequences which can range from partial deterioration to complete rupture of the tail
  • FIG. 2 shows an ammunition of the type described above. However, an important modification concerning the propellant charge 7 has been made.
  • a wedging has been placed at the front of the load, isolating the latter from the tail of the boom, and keeping it compacted towards the rear of the sleeve 5 so as to maintain its symmetry during the various manipulations of the ammunition before and during its placement.
  • the setting is carried out using a disc 10 which can, for example, consist of a block of expanded polystyrene, a cardboard or nitrocellulose plate or, a perforated metal plate.
  • the setting mode shown in Figure 3 is said to be rear type.
  • the wedge 11 is disposed at the rear of the propellant charge, leaving a free space 12 at the base of the socket.
  • Figure 4 shows the combination of the two variants described above.
  • the so-called mixed timing is performed both at the front of the load using the wedge 10 and at the rear with the wedge 11.
  • FIG. 5 Another alternative setting is shown in Figure 5.
  • the load is contained in a thin cylindrical tube 13 made of inert or combustible material such as for example celluloid, nitrocellulose or cardboard.
  • This type of configuration also requires a front setting (Figure 5), a rear setting ( Figure 6) or a mixed setting (Figure 7).
  • the propellant charge is placed outside the cylindrical tube 13.
  • All the examples described above can also be produced from propellant charges made up of grains of powder coated with a binder so as to ensure the compactness of the load.
  • Two pressure sensors were placed in zones A and B respectively located at the level of the base of the socket and near the rear of the launching shoe.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Toys (AREA)
  • Laminated Bodies (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
EP87401380A 1986-06-19 1987-06-19 Munitionstreibladung, insbesondere für Pfeilgeschosse grossen Kalibers Expired - Lifetime EP0250329B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401380T ATE50359T1 (de) 1986-06-19 1987-06-19 Munitionstreibladung, insbesondere fuer pfeilgeschosse grossen kalibers.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8608829 1986-06-19
FR8608829A FR2600411B1 (fr) 1986-06-19 1986-06-19 Chargement propulsif de munitions utilisable notamment pour les projectiles fleches de gros calibre

Publications (3)

Publication Number Publication Date
EP0250329A1 true EP0250329A1 (de) 1987-12-23
EP0250329B1 EP0250329B1 (de) 1990-02-07
EP0250329B2 EP0250329B2 (de) 1994-09-28

Family

ID=9336472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401380A Expired - Lifetime EP0250329B2 (de) 1986-06-19 1987-06-19 Munitionstreibladung, insbesondere für Pfeilgeschosse grossen Kalibers

Country Status (6)

Country Link
EP (1) EP0250329B2 (de)
AT (1) ATE50359T1 (de)
DE (1) DE3761708D1 (de)
ES (1) ES2014026T5 (de)
FR (1) FR2600411B1 (de)
IL (1) IL82927A (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1210609A (fr) * 1954-08-13 1960-03-09 Activa Ibera Perfectionnements à la disposition, à la composition et à l'utilisation des charges de poudres
FR1354703A (fr) * 1963-04-30 1964-03-06 Agencement des charges propulsives pour armes à feu de tous types
US3209689A (en) * 1956-11-14 1965-10-05 Mclennan Donald Elmore Reduction of gun barrel wear
US3938440A (en) * 1973-01-18 1976-02-17 Olin Corporation Mixed propellant charge
FR2426544A1 (fr) * 1978-02-21 1979-12-21 Dardick David Charge generatrice de gaz pour outils actionnes par gaz et a chambre ouverte
DE3442741A1 (de) * 1984-11-23 1986-05-28 Rheinmetall GmbH, 4000 Düsseldorf Ladungsanordnung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1210609A (fr) * 1954-08-13 1960-03-09 Activa Ibera Perfectionnements à la disposition, à la composition et à l'utilisation des charges de poudres
US3209689A (en) * 1956-11-14 1965-10-05 Mclennan Donald Elmore Reduction of gun barrel wear
FR1354703A (fr) * 1963-04-30 1964-03-06 Agencement des charges propulsives pour armes à feu de tous types
US3938440A (en) * 1973-01-18 1976-02-17 Olin Corporation Mixed propellant charge
FR2426544A1 (fr) * 1978-02-21 1979-12-21 Dardick David Charge generatrice de gaz pour outils actionnes par gaz et a chambre ouverte
DE3442741A1 (de) * 1984-11-23 1986-05-28 Rheinmetall GmbH, 4000 Düsseldorf Ladungsanordnung

Also Published As

Publication number Publication date
ATE50359T1 (de) 1990-02-15
EP0250329B2 (de) 1994-09-28
DE3761708D1 (de) 1990-03-15
IL82927A0 (en) 1987-12-20
ES2014026B3 (es) 1990-06-16
FR2600411A1 (fr) 1987-12-24
IL82927A (en) 1994-05-30
EP0250329B1 (de) 1990-02-07
FR2600411B1 (fr) 1990-04-20
ES2014026T5 (es) 1995-08-16

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