EP1693645A1 - Mit einem Führungsband versehenes Artilleriegeschoss - Google Patents

Mit einem Führungsband versehenes Artilleriegeschoss Download PDF

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Publication number
EP1693645A1
EP1693645A1 EP06290118A EP06290118A EP1693645A1 EP 1693645 A1 EP1693645 A1 EP 1693645A1 EP 06290118 A EP06290118 A EP 06290118A EP 06290118 A EP06290118 A EP 06290118A EP 1693645 A1 EP1693645 A1 EP 1693645A1
Authority
EP
European Patent Office
Prior art keywords
projectile
chamber
piston
valve
flange
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
EP06290118A
Other languages
English (en)
French (fr)
Other versions
EP1693645B1 (de
Inventor
Dominique Dion
René Dodu
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.)
Nexter Munitions SA
Original Assignee
Giat Industries SA
Nexter Munitions 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 Giat Industries SA, Nexter Munitions SA filed Critical Giat Industries SA
Publication of EP1693645A1 publication Critical patent/EP1693645A1/de
Application granted granted Critical
Publication of EP1693645B1 publication Critical patent/EP1693645B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/38—Range-increasing arrangements
    • F42B10/40—Range-increasing arrangements with combustion of a slow-burning charge, e.g. fumers, base-bleed projectiles
    • 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
    • F42B14/02—Driving bands; Rotating bands
    • 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
    • F42B14/08—Sabots filled with propulsive charges; Removing sabots by combustion of pyrotechnic elements or by propulsive-gas pressure

Definitions

  • the technical field of the invention is that of artillery projectiles comprising a body on which is fixed a sealing belt.
  • the belt When the projectile is of the gyro-stabilized type, the belt is generally metallic. It takes the scratches from the barrel of the weapon and communicates a rotational movement to the projectile body. This configuration is the one generally used for artillery fire, the artillery tubes being always scratched.
  • projectiles carrying a voluminous payload are carried out, for example projectiles that can be guided or self-guided on their trajectory. These projectiles have a larger mass and they generally include a deployable empennage that also occupies a certain place in the room.
  • the belt is secured to a rear shoe which maintains the empennage and which is ejected during shooting with a suitable gas generating composition.
  • the invention relates to an artillery projectile comprising a body on which is fixed a sealing belt, belt attached to the body of the projectile via a mounting ring connected to the projectile body by means of releasable fastening at the exit of the barrel of the weapon, projectile characterized in that the fastening means comprises a threaded flange receiving the mounting ring of the belt, flange integral with a bottom of the projectile and which is formed of separate deformable tabs by slits, the flange further delimiting a cylindrical housing receiving a piston sliding between two positions: a locking position in which it is engaged in the housing, against the flange, and prevents the bending of the tongues and an unlocking position in which he releases the tongues.
  • the piston may carry an axial extension carrying at least one bore, an extension which will penetrate into a chamber arranged inside the rear part of the projectile.
  • the extension may contain a sliding valve which during firing will let the propellant gases into the chamber, the pressure of the gases in the chamber pushing the exit of the barrel of the weapon the valve against a seat integral with the piston.
  • the extension may be closed by a perforated shutter on which will apply a rear portion of the valve during firing, the rear portion of the valve having a stud surrounded by a shoulder on which opens at least one longitudinal groove of the valve, the propellant thus, when firing enter the projectile chamber through the groove or grooves and perforations of the shutter.
  • the mounting ring of the belt may comprise an abutment surface on which the piston is applied when it is in the unlocking position at the exit of the barrel of the weapon.
  • the chamber located at the rear of the projectile may contain a propellant charge block providing a reduction of aerodynamic drag on trajectory.
  • the threaded rim may be integral with a bottom ensuring a partial closure of the chamber.
  • FIG. 1 shows a projectile 1 according to the invention.
  • This projectile comprises a body 2 carrying at its front part an ejectable shoe 3 and at its rear part a belt 4.
  • the belt 4 is integral with a mounting ring 6 extended by a case 5 which ensures, as described by patent EP905473, maintaining folded a stabilizer stabilizer (not shown).
  • means are provided which make it possible to eject the belt 4 at the exit of the barrel of the weapon.
  • FIG. 2a makes it possible to better specify the means making it possible to ensure the ejection of the belt 4 and the case 5.
  • These means comprise a mounting ring 6 which makes it possible to fix the belt 4 to the projectile 1.
  • This mounting ring 6 is connected to the body 2 by a fastening means designed to be automatically unlocked at the exit of the barrel of the weapon (not shown).
  • the mounting ring 6 comprises a cylindrical seat 6a receiving the belt 4 and an internal thread 6b which cooperates with a threaded flange 7 secured to the rear end of the body 2 of the projectile.
  • the tapping 6b of the ring 6 ends with a counterbore 6c which serves as a stop for the ring 6 when it is screwed onto the flange 7. Furthermore, the ring 6 has an internal flange 8 which is disposed at a distance from the counterbore 6c and which plays the role of a stop surface as will be described later.
  • the threaded rim 7 is integral with a bottom 9 providing a partial closure of a chamber 10, arranged at the rear of the projectile 2, and inside which is disposed a block 11 of a propellant charge ensuring reduced aerodynamic drag of the projectile 1 on trajectory.
  • Block 11 is initiated by the propellant gases when firing the projectile. It is the same for the pyrotechnic device 12 whose function is to re-ignite the block 11 in case of extinction during the passage to the mouth of the weapon.
  • the bottom 9 is shown alone in Figures 3a and 3b. It is seen that it carries a thread 9a on its entire external surface which allows its attachment to the body 2 of the projectile.
  • the bottom 9 has on one of its ends a rounded profile 9b which ensures the wedging of the base-bleed block 11 and on the other end a cylindrical housing 13 which is intended to receive a piston 14 (see Figure 2a).
  • the housing 13 is delimited by the end of the bottom 9 which forms the threaded rim 7.
  • the bottom 9 is also traversed by an axial bore 24.
  • flange 7 is slotted and formed of deformable tabs 15 separated by slots 16.
  • tongues 15 are deformable radially in flexion.
  • the flange 7 can not be deformed and the threaded connection ensuring the maintenance of the ring 6 is then perfectly rigid and resists the gun and the shock resulting from the postage of the projectile in the tube of the weapon.
  • the piston 14 comprises a peripheral flange 14a which is pinched between the ring 6 and the flange 7. This flange ensures the maintenance of the piston 14 in its locking position during the storage and transport phases of the projectile.
  • the piston 14 also carries an axial extension 17 carrying a bore 18. This extension penetrates through the bore 24 into the chamber 10 which is arranged inside the rear part of the body 2 of the projectile 1.
  • the extension 17 encloses a valve 19 which can slide freely in a cylindrical bore of the extension 17.
  • a thin shutter of paper or aluminum foil (not shown) can seal the bore 18 and thus ensure the seal with respect to moisture.
  • the extension 17 is closed at its rear by a perforated shutter 20 on which a rear portion of the valve 19 is applied during firing.
  • valve 19 is shown alone in Figures 4a and 4b.
  • It comprises a cylindrical body which ends with a conical end 19a intended to cooperate with a complementary conical profile 18a arranged on the opening 18 of the piston 14 and which forms a seat for the valve.
  • the other end of the valve 19 comprises a pin 21 which is surrounded by a shoulder 22.
  • the body of the valve 19 also carries longitudinal grooves 23 regularly distributed angularly (here four grooves).
  • the grooves 23 open at the shoulder 22.
  • the propellant gases that pass through the opening 18 can also enter the chamber 10 of the projectile through the grooves 23 and through the perforations of the shutter 20.
  • the operation of the device is as follows.
  • valve 19 is in abutment against the shutter 20 ( Figure 2b).
  • the propellant gases pass through the bore 18 (after possibly breaking the sealing straw), they follow the grooves 23 and enter the chamber 10 through the holes of the shutter 20.
  • the pressure then equilibrates between the interior of the chamber 10 and the chamber of the weapon (not shown).
  • the ring 6 is engaged on the thread of the flange 7. The latter is held firmly by the piston 14 and the mechanical strength of the belt is ensured.
  • the valve closes the opening 18.
  • the gases present in the chamber 10 can not escape and then exert their pressure on the inner face of the piston 14.
  • the pressure of the gases causes the shear of the flange 14a of the piston 14. The latter is then pushed backwards and it abuts against the flange 8 of the ring 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
EP06290118A 2005-02-21 2006-01-18 Mit einem Führungsband versehenes Artilleriegeschoss Active EP1693645B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0501859A FR2882430B1 (fr) 2005-02-21 2005-02-21 Projectile d'artillerie comportant une ceinture

Publications (2)

Publication Number Publication Date
EP1693645A1 true EP1693645A1 (de) 2006-08-23
EP1693645B1 EP1693645B1 (de) 2007-10-24

Family

ID=34955550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06290118A Active EP1693645B1 (de) 2005-02-21 2006-01-18 Mit einem Führungsband versehenes Artilleriegeschoss

Country Status (5)

Country Link
EP (1) EP1693645B1 (de)
AT (1) ATE376661T1 (de)
DE (1) DE602006000175T2 (de)
ES (1) ES2294769T3 (de)
FR (1) FR2882430B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018115080A1 (de) * 2018-06-22 2019-12-24 Rheinmetall Waffe Munition Gmbh Base-Bleed und Geschoss mit einem Base-Bleed
FR3094475B1 (fr) 2019-03-27 2022-08-12 Nexter Munitions Capotage et projectile comportant un tel capotage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905473A1 (de) 1997-09-24 1999-03-31 Giat Industries Grosskalibriges und weitreichendes Artilleriegeschoss
US20040011920A1 (en) * 2000-07-03 2004-01-22 Stig Johnsson Fin-stabilized guidable missile
US20040094661A1 (en) * 2000-07-03 2004-05-20 Stig Johnsson Method and arrangement for artillery missiles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905473A1 (de) 1997-09-24 1999-03-31 Giat Industries Grosskalibriges und weitreichendes Artilleriegeschoss
US20040011920A1 (en) * 2000-07-03 2004-01-22 Stig Johnsson Fin-stabilized guidable missile
US20040094661A1 (en) * 2000-07-03 2004-05-20 Stig Johnsson Method and arrangement for artillery missiles

Also Published As

Publication number Publication date
DE602006000175T2 (de) 2008-08-07
FR2882430B1 (fr) 2007-03-30
EP1693645B1 (de) 2007-10-24
DE602006000175D1 (de) 2007-12-06
ES2294769T3 (es) 2008-04-01
ATE376661T1 (de) 2007-11-15
FR2882430A1 (fr) 2006-08-25

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