EP0137958B2 - Charge propulsive et son procédé de fabrication - Google Patents

Charge propulsive et son procédé de fabrication Download PDF

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Publication number
EP0137958B2
EP0137958B2 EP84109753A EP84109753A EP0137958B2 EP 0137958 B2 EP0137958 B2 EP 0137958B2 EP 84109753 A EP84109753 A EP 84109753A EP 84109753 A EP84109753 A EP 84109753A EP 0137958 B2 EP0137958 B2 EP 0137958B2
Authority
EP
European Patent Office
Prior art keywords
propulsive charge
propellant charge
propulsive
charge
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
EP84109753A
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German (de)
English (en)
Other versions
EP0137958A2 (fr
EP0137958A3 (en
EP0137958B1 (fr
Inventor
Georg Dipl.-Phys. Klein
Eckhard Dipl.-Phys. Rahnenführer
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.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall GmbH
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Publication date
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Application filed by Rheinmetall GmbH filed Critical Rheinmetall GmbH
Publication of EP0137958A2 publication Critical patent/EP0137958A2/fr
Publication of EP0137958A3 publication Critical patent/EP0137958A3/de
Application granted granted Critical
Publication of EP0137958B1 publication Critical patent/EP0137958B1/fr
Publication of EP0137958B2 publication Critical patent/EP0137958B2/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033—Shaping the mixture
    • C06B21/0041—Shaping the mixture by compression
    • 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 according to claims 1 and 2 and a method for their production.
  • the propellant powder powders are compressed in the propellant charge sleeve by applying external pressure and without the addition of binding agents and / or solvents to a loading density of between 1.0 and 1.5 glcm 3 , and are deformed elastically to plastically with an almost uniform or gradually different compression, partial quantities with the same or different pressures being compressed in sections uniformly or gradually differently in the propellant charge sleeve.
  • the measures described there are aimed, in particular, at increasing the mass to be accommodated in a given propellant charge sleeve by compressing the entire propellant charge, if necessary in partial quantities.
  • the object of the invention and its solution is directed to a propellant charge with a structure by means of which the increase in the maximum gas pressure occurring during the shot development can be influenced with increasing temperature up to the elimination in the upper operating temperature range
  • the starting point is a propellant charge powder for which a p, T curve according to the above-mentioned diagram exists with loose bulk and without binding agent and / or solvent and with a first case game of a corresponding total mass N of the propellant charge.
  • a first portion of preferably about 50 to 80% is at least partially compressed. This will be discussed in more detail later.
  • the above-mentioned pressure increase can advantageously be influenced with increasing temperature until it is eliminated.
  • the increase in performance consists in the possible bombardment of a weapon barrel, which is designed for a certain maximum gas pressure, with a propellant charge which would no longer be permissible if the propellant powder was poured loose due to the steep rise in the p, T curve at higher operating temperatures.
  • the effective area of a press ram for compression can correspond to the clear internal cross section of the propellant charge sleeve, and the first portion can be compressed overall.
  • the propellant charge according to the invention of an at least partially combustible propellant charge sleeve is to be incorporated - this can be the case with ammunition in the caliber range from 20 mm to over 120 mm - it is advisable to compress the first portion in a comparatively smooth-walled device, for which the pressure load when compressing the first Share is designed. From this device, the compressed - possibly, as in the case of the bottle sleeve, only partially compressed - first part can be transferred into the aforementioned propellant charge sleeve by axial pressing. In order to avoid disadvantageous wall friction, a thin-walled tube can be arranged in the propellant charge sleeve before being transferred and then removed again.
  • a curve Sp N illustrates the behavior of a propellant charge from a propellant charge loosely poured into a propellant charge sleeve.
  • the curve in question shows that in the upper operating temperature range a horizontal limit G1, which indicates the mean maximum permissible gas pressure for a first weapon barrel, is exceeded by the curve Sp " in the steep climb (broken part). The propellant charge is therefore unsuitable for the relevant operating temperature range.
  • 1 b shows a curve S vN for the loose charge, a curve Ep N in FIG.
  • the two corresponding curves Ep M and E vM characterize the behavior of a propellant charge according to the invention, the mass M of which is greater than that of the propellant charge of bulk (known from FIGS. 1 a and 1 b) (mass N).
  • the same propellant charge sleeve and the same propellant charge powder are again assumed.
  • the propellant charge can now be used, but from the course of the curves Ep M and E YM for the propellant charge according to the invention, the increase in interior ballistic performance in the conventional sense mentioned above compared to the propellant charge in bulk can be clearly recognized.
  • a modified but similar course of the curves Ep M and E YM can be achieved when using different propellant powders.
  • FIG. 3 shows a device V1 for carrying out the method according to the invention in a bottle-shaped propellant charge sleeve 10 with a sleeve wall 11 and a sleeve base 12.
  • a threaded bore 14 is provided for a propellant charge lighter.
  • the propellant charge sleeve 10 ends on the upper side in a sleeve neck 16.
  • the device V1 consists of a thick-walled circular cylindrical tube 18 with an inner flange 19 on the upper side. The latter correspond to locking bores 18 'in the tube 18.
  • the propellant charge sleeve 10 is accommodated in the base piece 20 on the base side, with fixing means 23 engaging through the bores 18' and 21 in an extraction groove 24 on the tube base side.
  • the propellant charge sleeve 10 has first been inserted with the base piece 20 in the direction of an arrow 54 into the tube 18, aligned with the central longitudinal axis A.
  • the sleeve neck 16 is located in the region of a coaxial circular opening 26 in the inner flange 19.
  • a funnel 28 is placed on an unspecified top surface of the inner flange 19 and is surrounded by two spacer rings 30 and 32 in the case shown.
  • a circular cylindrical press die 34 with a press surface 38 on the underside has a fixing groove 36 in the upper free end. With the latter, the press die 34 is received in a holder 40 with radial bores 42. Only indicated fixing means 43 in the bores 42 engage in the groove 36 and fix the press ram 34 in the holder 40.
  • a first portion of a propellant charge is poured in the form of loose bulk powder through the funnel 28. This first portion is about 50 to about 80% of the total mass of the propellant charge to be incorporated.
  • the holder 40 is moved in the direction of an arrow 52 with the press die 34 defined therein, with the application of a prescribable pressure.
  • the pressing surface 38 comes into contact with a surface of the bed, not shown, and a part 46 of the first portion 44 is compressed. Since the outer diameter of the plunger 34 is smaller than the clear inner diameter of the propellant charge sleeve 10 in the region of its wall 11, an annular cylindrical cavity 48 remains, in which a small amount 50 of uncompacted propellant charge powder remains.
  • part 46 of the first portion 4 is complete as soon as a lower annular surface 41 of the holder 40 touches an upper annular surface 32 of the upper spacer ring 32.
  • the holder 40 is moved with the press ram 34 in the direction of an arrow 54 until the funnel 28 is released. A second portion of the propellant charge remaining as the remainder is then loosely poured onto the first portion 44.
  • a blind body 15 is arranged in the threaded bore 14 for the charge charge lighter and in the receiving bore 22 of the base piece 20.
  • the part of the dummy body 15 projecting into the interior of the propellant charge sleeve 10, which is not described in more detail, is essentially of the same dimensions as the propellant charge lighter. Therefore, after removing the dummy body 15, the propellant charge lighter can easily be inserted into a channel 15 ', which remains in the compressed part after removing the dummy body 15.
  • Fig. 4 shows a device V2 with a circular cylindrical tube 60 of sufficient wall thickness, in which a bottom piece 62 is inserted on the underside.
  • the latter has a central axial threaded bore 64 for receiving a dummy body 66.
  • a press ram 68 the outside diameter of which corresponds to the inside diameter of the tube 60, has a pressing surface 70 on the underside and an actuating rod 72 on the rear.
  • a central axial bore 72 creates an interior space 73 which extends into a free upper end 75 of the rod 72. Vent holes 74 'connect the interior 73 with the surrounding atmosphere.
  • Radial bores 79 are provided in a holder 76.
  • Bolt-shaped fixing means 68 grip through this and fix the press ram 68 with its rod 72 in the holder 76 via recesses 75 '.
  • a spacer ring 80 has a central opening 80 ′ which is adapted to the outside diameter of the rod 72.
  • the spacer ring 80 lies with a flat underside surface 81 ′ on an upper-side flat circular ring surface 61 of the tube 60.
  • the press ram 68 is removed from the latter. It is fixed in the holder 76 after sliding the spacer ring 80 and in the direction of an arrow 82 along a central longitudinal axis A while applying pressure against the loose powder spill of the first portion of the Move propellant charge.
  • the dummy body 66 projecting over a top surface 63 of the base piece 62 corresponds essentially to the dimensions of a propellant charge lighter.
  • a propellant charge lighter When the ram 68 moves downward, its free end 67 gets into the bore 72 ', the air being able to escape from the interior 73 through the ventilation bores 74'.
  • the first portion 86 of the propellant charge is compressed as soon as the receptacle 76 with its underside circular ring surface 77 touches the top surface 81 of the spacer ring 80.
  • the propellant charge is to be incorporated in a circular cylindrical inner cross section, not shown, of a metallic propellant charge sleeve, this can be provided with the dummy body 66, in which the inner diameter of the propellant charge sleeve tube 60 is inserted from below from below; in this case, the outside diameter of the press ram 68 must be adapted to the inside diameter of the metallic propellant charge sleeve, not shown.
  • the propellant charge sleeve 90 has a base 94, for example made of metal, with a central axial threaded bore 96 for a propellant charge lighter 98.
  • a combustible part 100 of the propellant charge sleeve 90 is fixedly connected to the bottom 94.
  • the first portion 86 of the propellant charge solidified in the device V2 according to FIG. 4 is now to be transferred into an interior space 97 of the propellant charge sleeve 90.
  • a metal sleeve 102 which is adapted to the inside diameter of the combustible part 100 and is shown in the drawing as excessively thick-walled for clarity, is inserted into the interior space 97 after the base piece has been removed 62 and the dummy body 66 (see FIG. 4), the arrangement according to FIG. 5 is fixed in alignment with the device V2.
  • the propellant charge lighter 98 gets into a channel 88 formed by the dummy body.
  • the press ram 34 has a central axial bore for the longer dummy body and then, if appropriate, also has a ventilation bore as in the device V2 in FIG. 4 must be provided.
  • the spacer rings 30, 32 and 80 are interchangeable, so that the depth of penetration of the press ram 34 or 68 can be changed to achieve a predetermined compression of the respective first portion 44 or 86 of the propellant charge.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Medicinal Preparation (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Golf Clubs (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Claims (9)

1. - Charge propulsive sans appoint de solvant ni de liant à la poudre de charge propulsive, pour laquelle, une pression à appliquer de l'extérieur sert à produire la compression de poudre de charge propulsive, dans le but d'augmenter la puissance balistique intérieure, pour laquelle une première fraction prédéterminable de la masse totale de poudre de charge propulsive se présente partiellement sous forme compactée, tandis que la deuxième fraction restante se présente sous forme de chargement non compacté, caractérisée en ce que la première fraction correspond à environ 50 à 80 % de la masse totale de la charge propulsive et la deuxième fraction restante forme une partie proche du projectile de la charge propulsive, à titre de chargement non comparté.
2. - Charge propulsive selon, la revendication 1, carartérisée par la présence de poudres de charge propulsive différentes.
3. - procédé de préparation d'une charge propulsive selon la revendication 1 ou 2, caractérisé par les étapes suivantes :
a) la première fraction de masse totale de la charge propulsive, sous forme de poudre en vrac, est compactée au moins partiellement, et
b) La seconde fraction reste comme reliquat de la masse totale de la charge propulsive sous forme de poudre en vrac non compactée et forme par un traitement de finition une partie de la charge propulsive voisine du projectile.
4. - procédé selon la revendication 3, caractérisé par les étapes suivantes:
a) le compactage de la première fraction s'effectue dans un dispositif;
b) une fois compactée, la première fraction est transférée dans une douille de charge propulsive, et
c) la deuxième fraction est chargée à l'état non compacté sur la première fraction.
5. - procédé selon la revendication 3, caractérisé par sa mise en oeuvre dans une douille de charge propulsive.
6. - procédé selon la revendication 3, 4, ou 5, caractérisé en ce que la totalité de la masse de la charge propulsive correspond à la masse N que peut recevoir une douille pour y élaborer la charge propulsive sous forme de chargement non compacté de la même poudre de charge propulsive ou des mêmes poudres de charge propulsive à partir de laquelle (desquelles) est constituée la charge propulsive.
7. - Procédé selon l'une des revendications 3, 4, ou 5, caractérisé en ce que la totalité de la masse de la charge propulsive correspond à une masse M qui est plus grande que les masses N selon la carartéristique de la revendication 6.
8. - procédé selon l'une des revendications 3 à 7, caractérisé par les étapes additionnelles suivantes :
a) Une pièce d'obturation qui correspond au moins aux dimensions d'un allumeur en saillie dans la douille de charge propulsive, est disposée de façon amovible pour introduire et compacter la première fraction de charge propulsive, et
b) la pièce d'obturation est ensuite retirée et remplacée par l'allumeur de charge propulsive.
9. - Procédé selon l'une des revendications 4 à 8, en particulier lors de l'utilisation d'une douille au moins partiellement combustible, carartérisé en ce que, pour le transfert de la première fraction compactée du dispositif, on introduit un moyen pour diminuer le frottement superficiel dans la douille et on retire celui-ci après le transfert de la première fraction.
EP84109753A 1983-10-01 1984-08-16 Charge propulsive et son procédé de fabrication Expired - Lifetime EP0137958B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833335821 DE3335821A1 (de) 1983-10-01 1983-10-01 Treibladung und verfahren zu ihrer herstellung
DE3335821 1983-10-01

Publications (4)

Publication Number Publication Date
EP0137958A2 EP0137958A2 (fr) 1985-04-24
EP0137958A3 EP0137958A3 (en) 1986-10-08
EP0137958B1 EP0137958B1 (fr) 1988-06-22
EP0137958B2 true EP0137958B2 (fr) 1991-12-18

Family

ID=6210777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109753A Expired - Lifetime EP0137958B2 (fr) 1983-10-01 1984-08-16 Charge propulsive et son procédé de fabrication

Country Status (6)

Country Link
US (1) US4625648A (fr)
EP (1) EP0137958B2 (fr)
JP (1) JPS6090889A (fr)
DE (2) DE3335821A1 (fr)
ES (1) ES8505907A1 (fr)
NO (1) NO843589L (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3523930A1 (de) * 1985-07-04 1987-01-08 Dynamit Nobel Ag Schutzverfahren beim umhuellen von temperatur- bzw. druckempfindlichen stoffen
US4823699A (en) * 1987-04-14 1989-04-25 Aai Corporation Back-actuated forward ignition ammunition and method
DE3939295A1 (de) * 1989-11-28 1991-05-29 Rheinmetall Gmbh Verfahren und vorrichtung zur herstellung von grosskalibriger munition
DE4138269C2 (de) * 1991-11-21 1998-01-15 Rheinmetall Ind Ag Munition
US5272828A (en) * 1992-08-03 1993-12-28 Colt's Manufacturing Company Inc. Combined cartridge magazine and power supply for a firearm
US5301448A (en) * 1992-09-15 1994-04-12 Colt's Manufacturing Company Inc. Firearm safety system
US5421264A (en) * 1992-09-15 1995-06-06 Colt's Manufacturing Company Inc. Firearm cartridge with pre-pressurizing charge
FR2746054B1 (fr) * 1996-03-13 1998-06-12 Procede, moyens et dispositif de compactage, adaptes au compactage de matieres a tendance pyrophorique
US20150268022A1 (en) * 2014-03-23 2015-09-24 Blake Van Brouwer Channel-forming propellant compression die and method
EP4242575A3 (fr) 2017-12-08 2023-10-18 Rabuffo SA Cartouche de munition

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE381075A (fr) * 1931-04-29
US2275569A (en) * 1941-04-30 1942-03-10 Trojan Powder Co Loading pasty solids
US3078799A (en) * 1960-09-29 1963-02-26 Kabik Irving Delay system
DE1261791B (de) * 1963-02-13 1968-02-22 Schermuly Pistol Rocket Appara Verfahren zum Verpressen von pyrotechnischen Zusammensetzungen in einem glattwandigen Behaelter
US3390210A (en) * 1965-07-16 1968-06-25 Army Usa Solventless extrusion process for forming rocket propellant grains
DE1796082B1 (de) * 1968-08-28 1971-12-09 Wasagchemie Ag Zuender fuer die punktfoermige Initiierung von Sprengladungen
DE2035851C3 (de) * 1970-07-18 1979-03-15 Dynamit Nobel Ag, 5210 Troisdorf Treibladungs-Pulverkörper und Verfahren zu seiner Herstellung
DE2239281C3 (de) * 1972-08-10 1984-05-30 Dynamit Nobel Ag, 5210 Troisdorf Verfahren zur Herstellung von mit einer Hülle umgebenen Sprengstoffkörpern
CH579549A5 (fr) * 1973-01-18 1976-09-15 Ciba Geigy Ag
CA1052179A (fr) * 1973-01-24 1979-04-10 Hercules Incorporated Munitions sous enveloppes
US3999484A (en) * 1975-10-28 1976-12-28 Ici United States Inc. Delay device having dimpled transfer disc
US4450768A (en) * 1981-01-12 1984-05-29 Schlumberger Technical Corporation Shaped charge and method of making it
US4429632A (en) * 1981-04-27 1984-02-07 E. I. Du Pont De Nemours & Co. Delay detonator
DE3205152C2 (de) * 1982-02-13 1984-04-12 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Treibladung für Hülsenmunition und Verfahren zu ihrer Herstellung

Also Published As

Publication number Publication date
EP0137958A2 (fr) 1985-04-24
ES536308A0 (es) 1985-07-01
JPH0445755B2 (fr) 1992-07-27
DE3472294D1 (en) 1988-07-28
NO843589L (no) 1985-04-02
EP0137958A3 (en) 1986-10-08
ES8505907A1 (es) 1985-07-01
JPS6090889A (ja) 1985-05-22
EP0137958B1 (fr) 1988-06-22
DE3335821A1 (de) 1985-04-11
US4625648A (en) 1986-12-02

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