US3882779A - Explosive projectile - Google Patents

Explosive projectile Download PDF

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Publication number
US3882779A
US3882779A US343317A US34331773A US3882779A US 3882779 A US3882779 A US 3882779A US 343317 A US343317 A US 343317A US 34331773 A US34331773 A US 34331773A US 3882779 A US3882779 A US 3882779A
Authority
US
United States
Prior art keywords
tubular member
projectile
annular
plastic body
embedded
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
US343317A
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English (en)
Inventor
Amos Frostig
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.)
Salgad
Original Assignee
Salgad
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 Salgad filed Critical Salgad
Application granted granted Critical
Publication of US3882779A publication Critical patent/US3882779A/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

Definitions

  • the plastic body includes fragments embedded therein, and a fibrous material either randomly oriented or in the form of a net is embedded in the material of the plastic body adjacent the external surface.
  • a ring member having guide elements on the external surface thereof may be embed- I ded in the external surface of the plastic body.
  • the present invention relates to an explosive projectile and more particularly to an explosive projectile which includes a plurality of fragments such as balls or other metallic pieces embedded in a plastic material surrounding the explosive charge.
  • An object of the present invention is to provide a projectile in which the fragments. are located about the explosive charge but in which the construction of the projectile is such that the resistance to the projected fragments at the time of explosion is negligible.
  • the explosive charge is contained within a generally tubular steel casing.
  • a body of plastic material in which the fragments are embedded, the external surface of the plastic body forming at least a part of the outer surface of the projectile.
  • a continuous layer of a fiber fleece or the like is embedded in the plastic body adjacent the external surface thereof giving the plastic body the necessary strength, but at the same time offering only negligible resistance upon explosion.
  • FIG. 1 is a side view partly in cross-section of a mortar projectile according to the present invention.
  • FIG. 2 is a partial cross-sectional view of another embodiment of the mortar projectile in accordance with the present invention.
  • the mortar projectile or grenade l is a fin-stabilized projectile comprising a main body 2, a forward transitional part 411 with a head ignitor 3, a rear transitional part 4!: and a tailpipe 5 with guide fins.
  • the projectile is provided with a preferably tubular inner member 6 of steel or aluminum containing an explosive charge 6'.
  • Member 6 is connected to the forward and rear portions of the projectile in an appropriate manner, e.g., by screw connections.
  • Fragments 7. which may be in the form of metal pieces. steel balls. and the like, are embedded in a body 8 of solid synthetic resin or the like, the fragments 7 being uniformly distributed in the resin mass.
  • the plastic body 8 containing the fragments is formed as a unitary structure and may be composed of any of the well known synthetic resins such as vinyl chloride, polyethylene. etc.
  • the external surface ofthe plastic body 8 forms the external surface of a portion of the projectile.
  • a layer 9 of randomly oriented or woven fibers is advantageously provided at the outer surface.
  • These fibers may comprise inorganic or synthetic substances or even a metal or the like.
  • the layer. in the form of a fiber-fleece. is preferably embedded in the exterior surface ofthe plastic body 8 during the casting process.
  • a net can be used which is embedded adjacent the external surface of the plastic body 8. The net. like the fibers of the lleeee layer. may
  • the fibrous fleece or net provided on the peripheral surface of the plastic body increases the mechanical strength of the projectile. This is important, particularly, where the external surface of the plastic body 8 is at the point of the largest diameter of the projectile where it will contact the interior surface of the mortar barrel when fired.
  • the layer 8, however, is thin enough to offer little or no resistance to the acceleration of the fragments during detonation. The result is an explosive projectile in which the plastic body carrying the embedded fragments is effectively protected against accidental external damage without a reduction in the effectiveness of the kinetic energy in projecting the fragments at the time of detonation.
  • a ring 10 of predetermined thickness can be embedded in the plastic body 8 or in the fibrous layer 9 in the region of the projectile having the largest diameter.
  • the external surface of the ring 10 includes guide elements 11. It will be noted that the guide ring 10 forms an integral part of the plastic body 8.
  • the fibrous layer 9 may or may not be included beneath the ring 10.
  • the ring 10 may be formed from either a plastic or metal.
  • the region of maximum diameter of the projectile can simply be reinforced by one or more additional fibrous layers embedded in the plastic material with the guide elements 11, such as the annular grooves, directly in the surface of the plastic body 8.
  • the axial width of the ring 10 is relatively narrow so that it will not offer any appreciable resistance to the fragments upon detonation. If the ring 10 is produced from a plastic material or if. instead of the ring. an additional reinforcing layer of fibers is utilized. the possibility of impairing the projection of the fragments is even further reduced.
  • the plastic body 8 is preferably molded directly onto the inner steel casing 6 such that there is little possibility of the plastic body separating from the inner casing containing the explosive charge 6.
  • the plastic body 8 may be molded separately and then pressed on the steel casing 8 such that it tightly fits about the steel casing.
  • the plastic body may have a cylindrical. pointed. arcuatc or toricouter contour when used in a mortar grenade.
  • plastic bodies with the embedded fragments may also be utilized in other types of projectiles such as bombs. land mines and the like.
  • the plastic body may be in the form of a disc. a thick ring. a hollow prism or the like having any type of external contour.
  • the plastic body can be produced in the form of a plurality of interfitting parts which may be secured together to form an assembly about the explosive charge.
  • the explosive projectile as described above permits the fragments to be projected over a substantially greater area upon detonation.
  • the plastic body which is not confined in an outer casing offers practically no resistance to the dispersal or scattering of the fragments upon detonation resulting in substantially improved coverage by the fragments.
  • the plastic body disintegrates under the force of the detonation permitting optimal transformation of the force into kinetic energy in the fragments.
  • a fin-stabilized projectile consisting essentially of a. a frame structure including an elongated metallic tubular member, a conical head portion secured to one end of said tubular member and a cylindrical tail portion having a plurality of radially projecting fins and secured to the opposite end of said tubular member, the diameters of said head and tail portions adjacent said tubular member being greater than the cross-section of said tubular member;
  • annular solid body surrounding and being secured to said tubular member and extending between said head and tail portions, the circumferential surface of said body at the opposite ends thereof having substantially the same diameter as the adjacent parts of said head and tail portions respectively, and a portion of the circumferential surface spaced from and intermediate the ends of said body having a greater diameter than either end thereof and a greater diameter than the radial length of said fins from the axis of said tail portion,
  • annular body comprising a multiplicity of fragments uniformly distributed and embedded in a synthetic resin
  • composition of said web being selected from the group consisting of textile, glass and metal;
  • said intermediate portion of said body having a said synthetic resin of said body and said thin p0 rous web giving no appreciable resistance and the axial length of said ring member being insufficient to give appreciable resistance to acceleration of said fragments following detonation of said explosive charge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)
  • Forging (AREA)
  • Toys (AREA)
US343317A 1972-03-22 1973-03-21 Explosive projectile Expired - Lifetime US3882779A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2213832A DE2213832C2 (de) 1972-03-22 1972-03-22 Geschoß mit einem ogivalen Geschoßkörper

Publications (1)

Publication Number Publication Date
US3882779A true US3882779A (en) 1975-05-13

Family

ID=5839731

Family Applications (1)

Application Number Title Priority Date Filing Date
US343317A Expired - Lifetime US3882779A (en) 1972-03-22 1973-03-21 Explosive projectile

Country Status (12)

Country Link
US (1) US3882779A (de)
BE (1) BE796700A (de)
CA (1) CA987957A (de)
DE (1) DE2213832C2 (de)
DK (1) DK135913C (de)
FI (1) FI56449C (de)
FR (1) FR2176705B1 (de)
GB (1) GB1426813A (de)
IL (1) IL41602A (de)
NL (1) NL168616C (de)
NO (1) NO134719C (de)
SE (1) SE409619B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016816A (en) * 1975-06-20 1977-04-12 Forenade Fabriksverken Shell especially for mortars
US4174665A (en) * 1976-07-23 1979-11-20 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Land mine construction particularly an antipersonnel splinter mine
US4327643A (en) * 1978-12-27 1982-05-04 Fernando Lasheras Barrios Anti-aircraft projectile with base, high-explosive body, and ogive
US4365560A (en) * 1979-09-11 1982-12-28 Etablissement Salgad Fin-stabilized projectile
US4383468A (en) * 1978-12-22 1983-05-17 Eurometaal N.V. Method of producing fragmentable casings and product obtained
US4388868A (en) * 1980-11-10 1983-06-21 Etablissement Salgad Shell body for fin-stabilized projectiles
US4405100A (en) * 1981-02-20 1983-09-20 The United States Of America As Represented By The Secretary Of The Navy Turbulence generator for maximizing configuration tolerances of free flight ordnance
US20020121213A1 (en) * 1997-10-17 2002-09-05 Rock Tek Limited. Method and apparatus for removing obstructions in mines
US7451704B1 (en) * 2003-03-20 2008-11-18 The United States Of America As Represented By The Secretary Of The Army Multifunctional explosive fragmentation airburst munition
US20160349027A1 (en) * 2015-05-28 2016-12-01 Raytheon Company Munition with preformed fragments
US20180252508A1 (en) * 2017-03-06 2018-09-06 Omnitek Partners Llc High Explosive Fragmentation Mortars
US10352668B1 (en) * 2016-12-28 2019-07-16 The United States Of America As Represented By The Secretary Of The Army 81mm increased lethality projectile
RU2741982C1 (ru) * 2020-05-18 2021-02-01 федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" Минометный бесшумный выстрел

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19546049B4 (de) * 1995-12-09 2004-10-28 Diehl Stiftung & Co.Kg Übungsgeschoß für mittel- bis großkalibrige Rohrwaffen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564751A (en) * 1945-05-19 1951-08-21 Lawrence H Cook Grenade
US3298308A (en) * 1960-11-11 1967-01-17 Aerojet General Co Composite casing for fragmentationtype explosive weapon and method of forming same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT354932A (de) * 1936-08-03
AT220029B (de) * 1960-06-09 1962-03-12 Ulbricht Hein Wwe Gmbh Geschoß
AT295360B (de) * 1968-06-17 1971-12-27 Oregon Ets Patentverwertung Granate aus Kuntstoff
AT294632B (de) * 1968-11-25 1971-11-25 Nationale D Armes De Guerre Sc Munition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564751A (en) * 1945-05-19 1951-08-21 Lawrence H Cook Grenade
US3298308A (en) * 1960-11-11 1967-01-17 Aerojet General Co Composite casing for fragmentationtype explosive weapon and method of forming same

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016816A (en) * 1975-06-20 1977-04-12 Forenade Fabriksverken Shell especially for mortars
US4174665A (en) * 1976-07-23 1979-11-20 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Land mine construction particularly an antipersonnel splinter mine
US4383468A (en) * 1978-12-22 1983-05-17 Eurometaal N.V. Method of producing fragmentable casings and product obtained
US4327643A (en) * 1978-12-27 1982-05-04 Fernando Lasheras Barrios Anti-aircraft projectile with base, high-explosive body, and ogive
US4365560A (en) * 1979-09-11 1982-12-28 Etablissement Salgad Fin-stabilized projectile
US4388868A (en) * 1980-11-10 1983-06-21 Etablissement Salgad Shell body for fin-stabilized projectiles
US4405100A (en) * 1981-02-20 1983-09-20 The United States Of America As Represented By The Secretary Of The Navy Turbulence generator for maximizing configuration tolerances of free flight ordnance
US7047886B2 (en) * 1997-10-17 2006-05-23 Rocktek Limited Method and apparatus for removing obstructions in the mines
US20020121213A1 (en) * 1997-10-17 2002-09-05 Rock Tek Limited. Method and apparatus for removing obstructions in mines
US7451704B1 (en) * 2003-03-20 2008-11-18 The United States Of America As Represented By The Secretary Of The Army Multifunctional explosive fragmentation airburst munition
US20160349027A1 (en) * 2015-05-28 2016-12-01 Raytheon Company Munition with preformed fragments
US9683822B2 (en) * 2015-05-28 2017-06-20 Raytheon Company Munition with preformed fragments
US10352668B1 (en) * 2016-12-28 2019-07-16 The United States Of America As Represented By The Secretary Of The Army 81mm increased lethality projectile
US20180252508A1 (en) * 2017-03-06 2018-09-06 Omnitek Partners Llc High Explosive Fragmentation Mortars
US11226181B2 (en) * 2017-03-06 2022-01-18 Omnitek Partners, L.L.C. High explosive fragmentation mortars
RU2741982C1 (ru) * 2020-05-18 2021-02-01 федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" Минометный бесшумный выстрел

Also Published As

Publication number Publication date
BE796700A (fr) 1973-09-13
CA987957A (en) 1976-04-27
DK135913C (da) 1977-12-05
IL41602A (en) 1977-12-30
IL41602A0 (en) 1973-07-30
DE2213832A1 (de) 1973-09-27
FR2176705B1 (de) 1977-09-02
DK135913B (da) 1977-07-11
FI56449C (fi) 1980-01-10
FI56449B (fi) 1979-09-28
NL7303688A (de) 1973-09-25
SE409619B (sv) 1979-08-27
NL168616B (nl) 1981-11-16
NO134719C (de) 1976-12-01
NO134719B (de) 1976-08-23
GB1426813A (en) 1976-03-03
DE2213832C2 (de) 1984-04-26
NL168616C (nl) 1982-04-16
FR2176705A1 (de) 1973-11-02

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