US3580174A - Projectile with hollow explosive charge - Google Patents

Projectile with hollow explosive charge Download PDF

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Publication number
US3580174A
US3580174A US800161A US3580174DA US3580174A US 3580174 A US3580174 A US 3580174A US 800161 A US800161 A US 800161A US 3580174D A US3580174D A US 3580174DA US 3580174 A US3580174 A US 3580174A
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US
United States
Prior art keywords
projectile
cavity
detonator
charge
passage
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
US800161A
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English (en)
Inventor
Robert Apotheloz
Hans-Ulrich Bigler
Rene Kessler
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 Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of US3580174A publication Critical patent/US3580174A/en
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
    • 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
    • F42C15/184—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 slidable carrier
    • 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

Definitions

  • the invention relates to a projectile having a hollow explosive charge provided with an inserted lagging and also having a detonator which before the firing of the projectile'is situated in a position of rest and after firing is situated in an ignition position at the rear end of a passage extending centrally towards the rear from the tip of the cavity in the explosive charge.
  • a known projectile of this type the detonator is situated before firing in a cylindrical chamber extending to the rear from the bottom of the projectile.
  • An arrangement of this kind is disadvantageous for example when the projectile is to be used as a secondary projectile in a carrier projectile.
  • Such secondary projectiles are disposed in rows one behind the other in the carrier projectile.
  • a chamber projecting to the rear beyond the bottom of the projectile therefore needs additional space, so that fewer secondary projectiles can be accommodated in the carrier projectile.
  • the aim of the invention is to obviate this disadvantage and the projectile according to the invention is distinguished in that the detonator is situated in its position of rest in the cavity of the explosive charge and is fastened on the tip of a rod which extends through the passage and on the firing of the shot is adapted to slide to the rear in said passage.
  • FIG. 1 is a longitudinal section through a subsidiary projectile with a wall of a carrier projectile
  • FIG. 2 is a longitudinal section through the subsidiary projectile illustrated in FIG. 1, during flight after detachment from the carrier projectile,
  • FIG. 3 is a view from the rear ofthe projectile
  • FIG. 4 a longitudinal section through the front portion of the projectile on a larger scale, before the firing of the projectile
  • FIG. 5 is a longitudinal section through the front portion of the projectile on a larger scale, after the firing of the projectile.
  • the projectile has a body I with a thinwalled cylindrical front portion 2 and also a thick-walled rearwardly conical rear portion 3.
  • This rear portion 3 has on the outside grooves 4 which extend in the peripheral direction and which serve as predetermined fracture points.
  • the rear portion 3 thus constitutes a fragmentation wall.
  • the front portion 2 of the projectile body 1 is provided on its inside with a shoulder 5.
  • the front portion 2 has a part 8 the wall of which is thinner than the remainder of the wall of the portion 2.
  • a ring 6 is supported on the shoulder 5 and is fastened on the portion 2 of the projectile body by a flanged-over edge 7 of the part 8.
  • the rear end face 11 of the ring 6 has an edge 9 which serves to center a hollow conical lagging 10.
  • This lagging is preferably made of copper.
  • the rear end face 11, situated at right angles to the axis of the projectile, of the ring 6 forms a stop for the lagging 10.
  • a sleeve 12 is fastened to the rear end of the lagging 10.
  • the sleeve 12, which is preferably made of plastics material, extends to the rear from the lagging 10 and is disposed coaxially to the latter and to the projectile body 1.
  • the projectile body I, lagging l0, and sleeve 12 form an annular space. This annular space contains a hollow charge 13 of explosive material.
  • a projectile bottom 15 is fastened on the rear portion 3 of the projectile body.
  • An annular booster charge 14 is disposed in an annular space at the rear end of the hollow charge.
  • the projectile body 1 has a hemispherical cover 16, which is fastened by an annular extension to the ring 6 previously described.
  • This cover 16 has a central bore 17, the axis of which coincides with the axis of the projectile.
  • a sleeve 18 is mounted slidably in this bore 17.
  • a second sleeve 19 extending into the lagging 10 is fastened on said sleeve 18.
  • the front portion of the sleeve 19 contains a primary detonator 20.
  • annular shoulder 21 against which an end face of the primary detonator lies.
  • annular shoulder 22 against which a thin sheet metal disc 23 is pressed by the front end face of the sleeve 19.
  • a firing pin 24 provided with a stem 25 is slidably guided in the sleeve 18. This stem 25 of the firing pin 24 is supported on the sheet metal disc 23. The tip of the firing pin 24 projects through the sheet metal disc 23 into the sleeve 19 and is situated in front of the primary detonator 20.
  • the sleeve 18 is provided with an annular shoulder 26 against which the stem 25 of the firing pin 24 bears in the position illustrated.
  • This shoulder 26 prevents the firing pin 24 from dropping out of the projectile in the forward direction.
  • the outside of the sleeve 18 has a groove 27 extending in the peripheral direction and having a V-shaped cross section.
  • a bore 28 directed transversely to the axis of the projectile is provided in the cover 16 and receives a slidably mounted safety pin 29.
  • This safety pin 29 has a conical point which projects into the groove 27 in the sleeve 18, while the opposite end of the safety pin is supported against the cylindrical wall 30 of a carrier projectile.
  • a carrier projectile of this type is described in detail in the earlier Swiss application No. 1820/68.
  • the bottom 15 of the projectile has a central conical bore 33.
  • a rod 32 preferably made of light metal, extends through the bore in the bottom 15 of the projectile and through the sleeve 12.
  • a sleeve 34 containing a secondary detonator 35.
  • the front end face of the secondary detonator 35 is situated opposite the rear end face of the primary detonator 20.
  • the rear end of the sleeve 34 tapers towards the rear.
  • the largest outside diameter of the sleeve 34 corresponds to the inside diameter of the sleeve 19 and the outside diameter at the rear end corresponds to the outside diameter of the rod 32.
  • a disc 37 which is situated behind the bottom 15 of the projectile.
  • the rear side of the disc 37 has a recess 38 in the form of a segment of a sphere.
  • the disc 37 is situated in a recess in a plate 39.
  • This plate 39 which is preferably made of plastics material, lies against the bottom 15 of the projectile when in its position of rest and has a forwardly directed edge 40 projecting beyond the rear end of the projectile.
  • the plate 39 has a star-shaped contour with five points. Of these points two neighboring points lie against the inside of the cylindrical wall 30. As can be seen from FIG. 3, the axis of the safety pin 29 lies in a center plane between these two tips of the plate 29 which bear a against the inside of thecylindrical wall 30. On the plate 39 there is disposed a forwardly projecting pin 42 which engages a bore 43 in the bottom 15 of the projectile and forms a rotational coupling between the bottom and the plate 39.
  • FIG. 1 shows that in each case by means of the firing pin head 44 of the projectile lying behind it the plate 39 of a projectile is held bearing against the projectile bottom 15 and thus the rod 32 is held inside the projectile.
  • the safety pin 29 is no longer supported by the wall of the carrier projectile.
  • the pin 29 is therefore driven outwards from the groove 27 by the force of the spring 31 acting on the sleeves 19, 18 and transmitted through the groove wall 46 to the tip of said pin.
  • the sleeves l8, 19 containing the firing pin 24 and the primary detonator 20 are thus freed and pushed by the spring 31 in the forward direction through the cover bore 17 into the position shown in FIG. 2. In this position the primary detonator 20 is at the distance from the hollow charge which is adjusted to the speed of the projectile and is optimum in respect of the effect to be obtained from the hollow charge.
  • the front surface of the plate 39 annularly surrounding the bottom 15 of the projectile receives a flow of air.
  • the plate 39 is thereby driven backwards, carrying with it the disc 37 together with the rod 32, which thus moves in the lagging l and in the sleeve 12.
  • the rearmost position illustrated in FIG. 2 is reached when the sleeve 34 lies against the wall of the conical bore 33 in the bottom 15 of the projectile. In this position the plate 39 acts as a surface on which forces serving to stabilize the projectile are produced through the action ofthe current of air.
  • the dynamic air pressure acting on the firing pin head 44 is not sufficient to perforate the disc 23; on impact with the target however the firing pin 24 is driven back into the primary detonator 20.
  • the explosive charge 13 is thereby primed in known manner through said detonator and with the aid of the secondary detonator 35, which is now situated in the region of the booster charge 14, and of said booster charge 14.
  • a projectile comprising a body having a bore, an explosive charge in said body having a cavity, a lagging located in said cavity, a passage in said charge extending centrally rearwardly from said cavity, a sleeve slidable in said bore, a primary detonator fixed in said sleeve for said charge which before expulsion of the projectile .is located in a position of rest and after expulsion of the projectile is located in an ignition position, a secondary detonator situated in its position of rest in said cavity, a rod extending through said passage having said secondary detonator fastened to the forward end thereof and which on expulsion of the projectile is adapted to slide to the rear in said passage.
  • a projectile according to claim 1 wherein a guide device is mounted on said rod which upon expulsion of the projectile is moved by air resistance out of a position of rest into operative position.
  • a projectile according to claim 2, wherein said guide device comprises a stabilizer directed transversely to the axis of the projectile on which dynamic air pressure acts.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Air Bags (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
US800161A 1968-03-07 1969-02-18 Projectile with hollow explosive charge Expired - Lifetime US3580174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH349468A CH493818A (de) 1968-03-07 1968-03-07 Geschoss mit Hohlsprengladung

Publications (1)

Publication Number Publication Date
US3580174A true US3580174A (en) 1971-05-25

Family

ID=4257198

Family Applications (1)

Application Number Title Priority Date Filing Date
US800161A Expired - Lifetime US3580174A (en) 1968-03-07 1969-02-18 Projectile with hollow explosive charge

Country Status (8)

Country Link
US (1) US3580174A (de)
BE (1) BE728913A (de)
CH (1) CH493818A (de)
DE (1) DE1907315A1 (de)
FR (1) FR2003374A1 (de)
GB (1) GB1214784A (de)
NL (1) NL6903419A (de)
SE (1) SE356586B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838644A (en) * 1972-08-31 1974-10-01 Rheinmetall Gmbh Nested hollow-charge subsidiary projectiles
USB282081I5 (de) * 1972-08-11 1975-01-28
US3874461A (en) * 1973-08-16 1975-04-01 Western Co Of North America Perforating apparatus
US3916794A (en) * 1972-09-26 1975-11-04 Oerlikon Buehrle Ag Projectile with secondary projectiles and firing apparatus for such projectile
US3956992A (en) * 1974-08-01 1976-05-18 The United States Of America As Represented By The Secretary Of The Army Wide-angle inertial impact fuze
EP0027418A1 (de) * 1979-10-10 1981-04-22 SOCIETE EUROPEENNE DE PROPULSION (S.E.P.) Société Anonyme dite: Vorrichtung zum Abfeuern eines Geschosses ohne rückwärtige Gasabfuhr und ohne Rückstoss mittels eines beidseitig offenen Abschussrohres
DE3137198A1 (de) * 1981-09-18 1983-04-14 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Hohlladungsmunition mit einem, einen aufschlagzuender enthaltenden abstandszuender
US4470353A (en) * 1982-07-26 1984-09-11 Honeywell Inc. Stem booster
AU588019B2 (en) * 1984-12-21 1989-09-07 Branscomb Corporation N.V. Shotgun cartridge with explosive shell
RU2243492C2 (ru) * 2003-02-10 2004-12-27 Акционерное общество открытого типа "Институт прикладной физики" Кумулятивный кассетный боеприпас

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2279436B (en) * 1978-10-12 1995-05-17 Gen Electric A round of ammunition
FR2444921A1 (fr) * 1978-12-20 1980-07-18 Oerlikon Buehrle Ag Tete de projectile a charge creuse et projectile comportant une telle tete
CH635925A5 (de) 1978-12-20 1983-04-29 Oerlikon Buehrle Ag Hohlladungs-panzergranate.
AU5397179A (en) * 1979-01-03 1984-08-09 Commonwealth Of Australia, The Cluster bomb
CH667723A5 (en) * 1984-03-23 1988-10-31 Oerlikon Buehrle Ag Short range anti-tank practice shell - has mushroom shaped de-stabilising body extended from rear cavity when speed falls, retained by line
DE8427961U1 (de) * 1984-09-22 1985-05-15 Rheinmetall GmbH, 4000 Düsseldorf Gefechtskopf
DE3835888A1 (de) * 1988-10-21 1990-04-26 Rheinmetall Gmbh Granatengeschoss

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441388A (en) * 1942-08-19 1948-05-11 George W Blackinton Projectile
US2697400A (en) * 1944-02-14 1954-12-21 Lyle K Liljegren Projectile with shaped charge and point initiating fuze
US2737888A (en) * 1952-01-25 1956-03-13 Energa Projectile equipped with a safety device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441388A (en) * 1942-08-19 1948-05-11 George W Blackinton Projectile
US2697400A (en) * 1944-02-14 1954-12-21 Lyle K Liljegren Projectile with shaped charge and point initiating fuze
US2737888A (en) * 1952-01-25 1956-03-13 Energa Projectile equipped with a safety device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB282081I5 (de) * 1972-08-11 1975-01-28
US3913483A (en) * 1972-08-11 1975-10-21 Us Army Grenade with fuze
US3838644A (en) * 1972-08-31 1974-10-01 Rheinmetall Gmbh Nested hollow-charge subsidiary projectiles
US3916794A (en) * 1972-09-26 1975-11-04 Oerlikon Buehrle Ag Projectile with secondary projectiles and firing apparatus for such projectile
US3874461A (en) * 1973-08-16 1975-04-01 Western Co Of North America Perforating apparatus
US3956992A (en) * 1974-08-01 1976-05-18 The United States Of America As Represented By The Secretary Of The Army Wide-angle inertial impact fuze
EP0027418A1 (de) * 1979-10-10 1981-04-22 SOCIETE EUROPEENNE DE PROPULSION (S.E.P.) Société Anonyme dite: Vorrichtung zum Abfeuern eines Geschosses ohne rückwärtige Gasabfuhr und ohne Rückstoss mittels eines beidseitig offenen Abschussrohres
DE3137198A1 (de) * 1981-09-18 1983-04-14 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Hohlladungsmunition mit einem, einen aufschlagzuender enthaltenden abstandszuender
US4470353A (en) * 1982-07-26 1984-09-11 Honeywell Inc. Stem booster
AU588019B2 (en) * 1984-12-21 1989-09-07 Branscomb Corporation N.V. Shotgun cartridge with explosive shell
US5000094A (en) * 1984-12-21 1991-03-19 Sullivan Leroy J Shotgun cartridge with explosive shell
RU2243492C2 (ru) * 2003-02-10 2004-12-27 Акционерное общество открытого типа "Институт прикладной физики" Кумулятивный кассетный боеприпас

Also Published As

Publication number Publication date
BE728913A (de) 1969-08-01
DE1907315A1 (de) 1970-09-10
CH493818A (de) 1970-07-15
SE356586B (de) 1973-05-28
GB1214784A (en) 1970-12-02
FR2003374A1 (de) 1969-11-07
NL6903419A (de) 1969-09-09

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