US3489088A - Explosive projectile containing at least one secondary projectile - Google Patents

Explosive projectile containing at least one secondary projectile Download PDF

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Publication number
US3489088A
US3489088A US747548A US3489088DA US3489088A US 3489088 A US3489088 A US 3489088A US 747548 A US747548 A US 747548A US 3489088D A US3489088D A US 3489088DA US 3489088 A US3489088 A US 3489088A
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US
United States
Prior art keywords
projectile
charge
explosive
blind hole
detonation
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
US747548A
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English (en)
Inventor
Jorg Von Ballmoos
Julius Schock
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 US3489088A publication Critical patent/US3489088A/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
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
    • F42B12/22—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction
    • F42B12/32—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction the hull or case comprising a plurality of discrete bodies, e.g. steel balls, embedded therein or disposed around the explosive charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/44—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information of incendiary type

Definitions

  • This invention relates to an explosive projectile containing at least one secondary projectile which is disposed on an explosive charge and has an open blind hole in which an incendiary charge is covered by an additional charge.
  • An explosive projectile of this type is known in which the mouth of the blind hole in the secondary projectile is directed towards the explosive charge.
  • An arrangement of this type has the disadvantage that on the detonation of the explosive charge the secondary projectile is often broken up by the pressure wave penetrating into the blind hole.
  • This broken-up secondary projectile has less penetrating power than a secondary projectile which remains whole.
  • this broken-up secondary projectile can no longer serve its purpose, namely to start a fire in the environment of the detonation point. If the secondary projectile is not broken up, the arrangement has the disadvantage that the incendiary charge burns rapidly after the style of an explosion during the detonation, so that the secondary projectile can no longer subsequently have the effect of causing a fire.
  • the aim of the invention is to obviate all these disadvantages.
  • the explosive projectile according to the invention is distinguished in that the mouth of the blind hole faces away from the explosive charge and that the additional charge consists of a glow charge having a low gas content.
  • FIGURE 1 is a cross-section through a first example of construction of the explosive projectile, taken on line II in FIGURE 2;
  • FIGURE 2 is a side view of the explosive projectile
  • FIGURE 3 is a longitudinal section through a secondary projectile
  • FIGURE 4 is a longitudinal section through part of an explosive projectile according to a second embodiment.
  • FIGURES 1 and 2 forms part of an anti-tank rocket which is not illustrated in greater detail.
  • This projectile has a casing 1 of light metal.
  • the casing 1 has a conical front portion on the tip of which a fuze 2 is screwed.
  • This fuze 2 is described in Swiss patent specification No. 384,416 and illustrated in FIGURES l and 2 of said specification.
  • the rear portion of the projectile contains an explosive charge 3 which forms the core of the projectile.
  • the explosive charge 3 is hollowed out conically and forms a hollow charge, which is known in itself.
  • the conical cavity is line-d by an insert 4.
  • a safety element 5 is inserted in the rear portion of the explosive charge 3 .
  • a safety element of this type is described and illustrated in Swiss patent specification No. 361,743.
  • a central passage 6 connects the tip of the hollow cone to a bore 7 which contains the safety element 5.
  • the rear, substantially cylindrical portion of the projectile casing 1 encloses two annular fillers 8, which are made of foam plastics, for example expanded polystyrene.
  • segmental cages 9 which are made of plastics material and intended to receive secondary projectiles 13.
  • These cages 9 have grooves 10 directed parallel to the axis of the projectile.
  • the planes of symmetry of these grooves 10 are spaced apart by regular angular distances and form radial planes of the projectile.
  • the length of the secondary projectiles 13, which are in the form of bodies of revolution, is substantially equal to their diameter. This diameter of the secondary projectiles corresponds to the width of the grooves 10 in a cage 9, and amounts for example to 13 millimeters.
  • the secondary projectile 13 has a short cylindrical middle portion 14 followed both at the front and at the rear by rounded portions, the rear rounded portion merging into a flat end face 15.
  • a blind hole 16 having a rounded bottom is provided, as illustrated in FIGURE 3.
  • the axis of the blind hole 16 coincides with the axis of the secondary projectile 13.
  • the rear portion of the blind hole 16 contains an incendiary charge 17.
  • This incendiary charge 17 is composed of magnesium and polytetrafluorethylene.
  • the front portion of the blind hole 16 contains an additional charge 18, which consists. of a glow charge having a low gas content.
  • This glow charge 18 is composed of manganese and lead chromate.
  • Each groove 10 of the cage 9 contains a row of secondary projectiles, the mouths of their blind holes 16 lying directly behind the inner surface of the projectile casing 1 in the embodiment illustrated in FIGURES fl and 2.
  • the axes of the secondary projectiles are inclined by an angle of sixty degrees in relation to a cross-sectional plane of the explosive projectile, the mouth being directed away from the surface of the explosive charge 3.
  • the explosive projectile is used mainly for attacking armoured vehicles, for example armoured troop-carrying vehicles.
  • the detonation of the explosive charge 3 is initiated through the safety element 5 in a manner which is known and therefore not explained more fully.
  • the well known hollow charge effect occurs and at the same time the cages 9, damping the detonation, and torn apart and the secondary projectiles are thrown olf from the projectile at high speed in the radial direction.
  • the glow charge 18 of the secondary projectiles 13 is ignited and after a burning time of 0.2 seconds ignites the incendiary charge, which then burns for about four seconds and in this time has the effect of producing a fire, either by penetrating tanks containing fuel or by striking against other combustible objects.
  • the detonation wave strikes primarily against the walls of the secondary projectiles, since the mouth of the blind holes 16 is turned away from the surface of the explosive charge, so that the breaking-up of the secondary projec- References Cited tiles 13 is prevented.
  • An explosive projectile having a longitudinal axis 804,400 10/1936 France. containing an explosive charge and at least one secondary 1,054,114 2/1954 France. projectile having an axis, said secondary projectile com- 787,096 12/1957 Great Britain. prising a casing having an open blind hole extending along 1,257,608 2 /1961 France.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
US747548A 1967-07-26 1968-07-25 Explosive projectile containing at least one secondary projectile Expired - Lifetime US3489088A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1062767A CH478396A (de) 1967-07-26 1967-07-26 Sprenggeschoss mit mindestens einem Sekundärgeschoss

Publications (1)

Publication Number Publication Date
US3489088A true US3489088A (en) 1970-01-13

Family

ID=4365187

Family Applications (1)

Application Number Title Priority Date Filing Date
US747548A Expired - Lifetime US3489088A (en) 1967-07-26 1968-07-25 Explosive projectile containing at least one secondary projectile

Country Status (9)

Country Link
US (1) US3489088A (OSRAM)
AT (1) AT283162B (OSRAM)
BE (1) BE717964A (OSRAM)
CH (1) CH478396A (OSRAM)
DE (1) DE1703840B1 (OSRAM)
FR (1) FR1571964A (OSRAM)
GB (1) GB1237592A (OSRAM)
NL (1) NL6810569A (OSRAM)
SE (1) SE370576B (OSRAM)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB397527I5 (OSRAM) * 1973-09-17 1975-01-28
US3906860A (en) * 1974-06-04 1975-09-23 Us Army Dual purpose projectile
US3951067A (en) * 1974-07-11 1976-04-20 Dow Corning Corporation Wide dispersion incendiary device
US3961576A (en) * 1973-06-25 1976-06-08 Montgomery Jr Hugh E Reactive fragment
US4303015A (en) * 1979-02-28 1981-12-01 Fabrique Nationale Herstal, En Abrege F.N. Pre-fragmented explosive shell
US4444117A (en) * 1981-03-30 1984-04-24 The Boeing Company Stacked tube submunition dispenser
US4503776A (en) * 1980-12-02 1985-03-12 Diehl Gmbh & Co. Fragmentation body for fragmentation projectiles and warheads
US4516501A (en) * 1980-05-02 1985-05-14 Messerschmitt-Bolkow-Blohm Gmbh Ammunition construction with selection means for controlling fragmentation size
US4644867A (en) * 1984-04-02 1987-02-24 Aktiebolaget Bofors Shell case with non-compressible fragments metallurgically bonded to the casing
US4648323A (en) * 1980-03-06 1987-03-10 Northrop Corporation Fragmentation munition
US5313890A (en) * 1991-04-29 1994-05-24 Hughes Missile Systems Company Fragmentation warhead device
US20030167956A1 (en) * 2001-11-28 2003-09-11 Geke Technologie Gmbh Projectiles possessing high penetration and lateral effect with integrated disintegration arrangement
US20060112847A1 (en) * 2004-11-29 2006-06-01 Lloyd Richard M Wide area dispersal warhead
US7383775B1 (en) 2005-09-06 2008-06-10 The United States Of America As Represented By The Secretary Of The Navy Reactive munition in a three-dimensionally rigid state
WO2009102254A1 (en) * 2008-02-14 2009-08-20 Bae Systems Bofors Ab Splinter shell and method for producing the same
US10267607B2 (en) * 2014-02-11 2019-04-23 Raytheon Company Munition with outer enclosure

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2822699C1 (de) * 1978-05-24 1991-12-12 Buck Chem Tech Werke Brandsplitterkoerper mit einer Brandsplitterladung
DE3341052C1 (de) * 1983-11-12 1992-03-26 Rheinmetall Gmbh Hohlladung mit Detonationswellenlenker
DE3402121A1 (de) * 1984-01-23 1987-07-16 Diehl Gmbh & Co Hohlladungsgeschoss
FR2707387B1 (fr) * 1993-07-09 1995-09-29 Lacroix E Tous Artifices Tête pyrotechnique à effets incendiaire et vulnérant renforcés.
DE102007021451A1 (de) * 2007-04-05 2008-10-09 Rwm Schweiz Ag Subprojektil mit energetischem Inhalt
SE543620C2 (sv) * 2017-12-05 2021-04-20 Bae Systems Bofors Ab Verkansdel med förformade element

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1343036A (en) * 1918-09-25 1920-06-08 Cook George Elwood Aerial bomb
GB259539A (en) * 1925-10-12 1927-07-21 Bohdan Pantoflicek Improvements in or relating to bombs or the like
FR804400A (fr) * 1935-07-13 1936-10-22 Nouveau projectile d'artillerie contre-avions
FR1054114A (fr) * 1951-11-19 1954-02-08 Soc Tech De Rech Ind Projectile
US2726943A (en) * 1955-06-09 1955-12-13 Raymond H Heiskell Pyrotechinc composition
GB787096A (en) * 1954-10-07 1957-12-04 Bombrini Parodi Delfino Improvements in combined explosive and incendiary projectiles
FR1257608A (fr) * 1948-10-13 1961-04-07 Soc Tech De Rech Ind Perfectionnements aux engins de combat
US3198678A (en) * 1960-10-03 1965-08-03 Thiokol Chemical Corp Pyrotechnic compositions
US3309249A (en) * 1965-03-15 1967-03-14 Paul L Allen Thermite-resin binder solid fuel composition

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1877127A (en) * 1932-01-11 1932-09-13 George C Hale Delay powder
DE1172157B (de) * 1960-04-11 1964-06-11 Aerojet General Co Splittergeschoss

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1343036A (en) * 1918-09-25 1920-06-08 Cook George Elwood Aerial bomb
GB259539A (en) * 1925-10-12 1927-07-21 Bohdan Pantoflicek Improvements in or relating to bombs or the like
FR804400A (fr) * 1935-07-13 1936-10-22 Nouveau projectile d'artillerie contre-avions
FR1257608A (fr) * 1948-10-13 1961-04-07 Soc Tech De Rech Ind Perfectionnements aux engins de combat
FR1054114A (fr) * 1951-11-19 1954-02-08 Soc Tech De Rech Ind Projectile
GB787096A (en) * 1954-10-07 1957-12-04 Bombrini Parodi Delfino Improvements in combined explosive and incendiary projectiles
US2726943A (en) * 1955-06-09 1955-12-13 Raymond H Heiskell Pyrotechinc composition
US3198678A (en) * 1960-10-03 1965-08-03 Thiokol Chemical Corp Pyrotechnic compositions
US3309249A (en) * 1965-03-15 1967-03-14 Paul L Allen Thermite-resin binder solid fuel composition

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961576A (en) * 1973-06-25 1976-06-08 Montgomery Jr Hugh E Reactive fragment
USB397527I5 (OSRAM) * 1973-09-17 1975-01-28
US3913488A (en) * 1973-09-17 1975-10-21 Us Army Ballistic disc
US3906860A (en) * 1974-06-04 1975-09-23 Us Army Dual purpose projectile
US3951067A (en) * 1974-07-11 1976-04-20 Dow Corning Corporation Wide dispersion incendiary device
US4303015A (en) * 1979-02-28 1981-12-01 Fabrique Nationale Herstal, En Abrege F.N. Pre-fragmented explosive shell
US4648323A (en) * 1980-03-06 1987-03-10 Northrop Corporation Fragmentation munition
US4516501A (en) * 1980-05-02 1985-05-14 Messerschmitt-Bolkow-Blohm Gmbh Ammunition construction with selection means for controlling fragmentation size
US4503776A (en) * 1980-12-02 1985-03-12 Diehl Gmbh & Co. Fragmentation body for fragmentation projectiles and warheads
US4444117A (en) * 1981-03-30 1984-04-24 The Boeing Company Stacked tube submunition dispenser
US4644867A (en) * 1984-04-02 1987-02-24 Aktiebolaget Bofors Shell case with non-compressible fragments metallurgically bonded to the casing
US5313890A (en) * 1991-04-29 1994-05-24 Hughes Missile Systems Company Fragmentation warhead device
US20030167956A1 (en) * 2001-11-28 2003-09-11 Geke Technologie Gmbh Projectiles possessing high penetration and lateral effect with integrated disintegration arrangement
US7231876B2 (en) * 2001-11-28 2007-06-19 Rheinmetall Waffe Munition Gmbh Projectiles possessing high penetration and lateral effect with integrated disintegration arrangement
US20060112847A1 (en) * 2004-11-29 2006-06-01 Lloyd Richard M Wide area dispersal warhead
US7717042B2 (en) * 2004-11-29 2010-05-18 Raytheon Company Wide area dispersal warhead
US7383775B1 (en) 2005-09-06 2008-06-10 The United States Of America As Represented By The Secretary Of The Navy Reactive munition in a three-dimensionally rigid state
WO2009102254A1 (en) * 2008-02-14 2009-08-20 Bae Systems Bofors Ab Splinter shell and method for producing the same
US10267607B2 (en) * 2014-02-11 2019-04-23 Raytheon Company Munition with outer enclosure

Also Published As

Publication number Publication date
SE370576B (OSRAM) 1974-10-21
GB1237592A (en) 1971-06-30
NL6810569A (OSRAM) 1969-01-28
DE1703840B1 (de) 1972-07-06
CH478396A (de) 1969-09-15
FR1571964A (OSRAM) 1969-06-20
BE717964A (OSRAM) 1968-12-16
AT283162B (de) 1970-07-27

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