EP0073385B1 - Multiple component penetrator projectile - Google Patents

Multiple component penetrator projectile Download PDF

Info

Publication number
EP0073385B1
EP0073385B1 EP82107386A EP82107386A EP0073385B1 EP 0073385 B1 EP0073385 B1 EP 0073385B1 EP 82107386 A EP82107386 A EP 82107386A EP 82107386 A EP82107386 A EP 82107386A EP 0073385 B1 EP0073385 B1 EP 0073385B1
Authority
EP
European Patent Office
Prior art keywords
component
tungsten
tail
penetrator
penetrator projectile
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
Application number
EP82107386A
Other languages
German (de)
French (fr)
Other versions
EP0073385A1 (en
EP0073385B2 (en
Inventor
Andrew John Kegel
James Richard Spencer
James Sterrett Smith
Russell Harding Rhodes
James Alan Mullendore
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.)
Osram Sylvania Inc
Original Assignee
GTE Products Corp
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
Family has litigation
Priority to US29790281A priority Critical
Priority to US297902 priority
Application filed by GTE Products Corp filed Critical GTE Products Corp
Publication of EP0073385A1 publication Critical patent/EP0073385A1/en
Publication of EP0073385B1 publication Critical patent/EP0073385B1/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23148203&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0073385(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Publication of EP0073385B2 publication Critical patent/EP0073385B2/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/04Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
    • F42B12/06Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with hard or heavy core; Kinetic energy penetrators

Description

  • The present invention relates to a multiple component penetrator projectile comprising a body component and a tail component joined to one end of the body component, the latter consisting of frangible tungsten material. A penetrator projectile of this type is shown in EP-A-51375, published 12.05.82, this document being an intermediate document coming thereby within the provisions of Articles 54(3) and 89 EPC.
  • According to the above identified prior art document the body component (mid-section) consists of a frangible tungsten alloy whereas the tail component consists of a high strength tungsten alloy or equivalent metal commonly used for armor-piercing projectiles.
  • As used herein the term "frangible material" means a material which, under high velocity impact against a target, will break into small fragments while penetrating the target. While frangible materials can penetrate light armor and break up into small fragments, generally they are difficult to machine using conventional machining techniques.
  • The multiple component penetrator projectile of the afore identified prior art document has a cavity in its tail section for a tracer and in some instances such cavities also can hold a self- destruct mechanism to avoid hazards to friendly personnel, equipment or installations from projectiles not hitting the target. In the prior art multiple component penetrator projectile, the tail component consisting of high strength tungsten alloy or equivalent armor-piercing metal is used in order to permit the defeat of spaced multiple plate targets as represented. For example, by aircraft or helicopters equippped with armored cockpits or other protected components.
  • In FR-E-75765 there is known a multiple component penetrator projectile comprising a body component and a tail component joined to one end of the body component. the latter consisting of a high hardness metal for instance sinter tungsten carbide and the tail component consisting of a high density metal for instance sinter tungsten or uranium 238.
  • Furthermore, in FR-A-1 231 010 there is disclosed a multiple component penetrator projectile of which the tail component consists of tungsten alloy with a high content of tungsten or a material with at least the density of the body but less expensive and more machinable.
  • It is the object of the present invention to provide a multiple component penetrator projectile of the type as indicated in the precharacterizing clause of claim 1 such that it provides flexibility in manufacture and overcomes some of the problems associated with the prior art and constitute an advancement in the art.
  • The above object of the present invention is achieved by the invention as claimed in claim 1.
  • Preferred embodiments of further improvements of the claimed invention are defined in the subclaims.
  • Some ways of carrying out the invention are described below in detail with reference to drawings which illustrate several preferred embodiments, in which:
    • Figures 1, 2 and 3 show longitudinal cross-sectional views of projectiles according to the present invention.
  • As previously mentioned frangible materials are known. In addition, frangible alloys of tungsten are known, such as 98W-2Ni, 97W-2.lNi-0.9Fe, and 90W-10Mo and tungsten doped with about 400 ppm of nickel. All of these materials will penetrate a target such as a 2" (5 cm) thick steel armor plate, when fired at a high velocity such as from an anti-tank gun, then break into small fragments while penetrating or exiting from the plate. Such materials, while exhibiting the desired frangibility, have a tendency to form cracks when cavities are machined into the tail of the penetrator for tracer or self-destruction mechanisms. The cracks can cause premature fragmentation.
  • "Heavy alloys" are that class of two phase multicomponent tungsten alloys containing nickel and at least one other metal and in which one phase is essentially tungsten and the other phase is a solid-solution of nickel, tungsten and the other metal or metals. It has been found that the heavy alloys are suitable for forming the tail component of a penetrator where a cavity is to be machined into the tail component. It is preferred to use heavy alloys having a density of at least about 16.7 grams/cc, therefore these alloys containing at least about 88% tungsten and the balance being nickel and other metals such as
    Figure imgb0001
    , molybdenum, iron, titanius and the like. A p aularly preferred alloy is 97 1-1.35Ni-1.35..
  • The projectiles of the present in. 3ntion have multiple components of different materials. With particular reference to Fig, 1, a cross section of penetrator 10 is shown comprising a body component 12, and a tail component 14 containing a tracer cavity 16. Nose component 18 is of the same material as the body component 12 and can be either fabricated in one section comprising both the body component 12 and nose portion component 18 or if desired the pieces can be fabricated separately and the nose component 18 can be joined to one end of body component 12. The method of joining the components can be brazing, inertial welding and the like. The tail component 14 is similarly joined to the opposite end of body component 12. Frangible materials as previously described are used for the body portion 12 and nose component 18. Each of these materials will penetrate the targets up to about 2" (5 cm) thick steel and will break into small pieces upon exiting the target.
  • The tail portion is the heavy alloy as previously described having a density of at least 16.7 grams/ cc.
  • With particular reference to Fig. 2 a cross section of a penetrator 20 having three segments is shown. Body component 22 is a frangible material. The nose component 24 is a tungsten base alloy such as 98W-2Ni, 97W-2.1 Ni-0.9Fe or 90W-10Mo. Tail component 26 is essentially identical to the tail portion of Fig. 1, that is, it is a machinable heavy alloy. The penetrator 20 also contains a tracer cavity 28.
  • With particular reference to Fig. 3 there is provided a penetrator 30 having four separate segments. Body component 32 is made of the aforementioned annealed tungsten or tungsten containing 400 ppm of nickel. The tail component 34 and one section 36 of the nose component 38 are made of the machinable heavy alloy. A second section 40 extends from the first section 36 to serve as a windscreen and is a lighter weight material such as aluminium or a ceramic material. The nose component 38 thus is comprised of a first section 36 which is machined to enable attachment of the second section 40 which serves as a windscreen. The cavity 42 is shown in the tail component 34.
  • While there has been shown and described what are at present considered the preferred embodiments of the invention, it will be obvious to those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims (4)

1. A multiple component penetrator projectile (10, 20,30) comprising a body component (12, 22, 32) and a tail component (14, 26, 34) consisting of a heavy alloy material that is machinable and joined to one end of the body component (12, 22, 32), the latter consisting of a frangible tungsten material, characterized in that said frangible material is selected from annealed tungsten, tungsten alloys selected from the group consisting of 98W-2Ni; 97W-2.1 Ni-0.9Fe; and 90W-10Mo and tungsten doped with about 400 parts per million of nickel.
2. A penetrator projectile according to claim 1, wherein a nose component (18, 24, 38) generally having a conical shape extends from the opposing end of the body component (12, 22, 32), said nose component having the same composition as the body component or consisting of a material different than said body component.
3. A penetrator projectile according to claim 2, wherein said nose component (18, 24, 38) is comprised of a first section (36) and a second section (40), the first section being a machinable tungsten portion joined to the end of the body component opposite to the tail component and the second portion being a low density portion joined to and extending from the first section and having a different composition than said first section.
4. A penetrator projectile according to claim 3, wherein said second section (40) is selected from aluminium and ceramics.
EP82107386A 1981-08-31 1982-08-13 Multiple component penetrator projectile Expired - Lifetime EP0073385B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US29790281A true 1981-08-31 1981-08-31
US297902 1981-08-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT82107386T AT23632T (en) 1981-08-31 1982-08-13 Multi-component balance sheet.

Publications (3)

Publication Number Publication Date
EP0073385A1 EP0073385A1 (en) 1983-03-09
EP0073385B1 true EP0073385B1 (en) 1986-11-12
EP0073385B2 EP0073385B2 (en) 1993-03-31

Family

ID=23148203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107386A Expired - Lifetime EP0073385B2 (en) 1981-08-31 1982-08-13 Multiple component penetrator projectile

Country Status (3)

Country Link
EP (1) EP0073385B2 (en)
AT (1) AT23632T (en)
DE (1) DE3274294D1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0156948B1 (en) * 1983-10-28 1989-08-16 Rheinmetall GmbH Fin-stabilized subcalibre missile with a high length-to-diameter ratio
DE3242591A1 (en) * 1982-11-18 1984-05-24 Rheinmetall GmbH, 4000 Düsseldorf LOW-LENGTH / DIAMETER RATIO UNDER-CALIBRATION BULLET STOCK
DE3532776C2 (en) * 1985-09-13 1992-10-01 Rheinmetall Gmbh, 4000 Duesseldorf, De
US4961384A (en) * 1986-02-18 1990-10-09 The United States Of America As Represented By The Secretary Of The Army Hypervelocity penetrator for an electromagnetic accelerator
NO163466C (en) * 1987-05-21 1990-05-30 Oerlikon Buehrle Ag Projectile with a projectile core and a drive mirror shell.
DE3821474C1 (en) * 1988-06-25 1998-08-27 Nwm De Kruithoorn Bv One-piece frangible armour-piercing discarding sabot
DE19619341C2 (en) * 1996-05-14 1999-11-11 Rheinmetall W & M Gmbh Sub-caliber balancing projectile and method for its production
US8291828B2 (en) 2010-03-04 2012-10-23 Glasser Alan Z High velocity ammunition round
US8096243B2 (en) * 2010-03-04 2012-01-17 Glasser Alan Z High velocity ammunition round

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2393648A (en) * 1942-02-20 1946-01-29 Carl A Martin Projectile
FR1231010A (en) * 1950-12-29 1960-09-26 Cie Ind Des Metaux Electroniqu Projectiles with a composite body or core and their manufacturing process
FR1212390A (en) * 1959-05-26 1960-03-23 Use of new materials for ammunition components and methods for obtaining these components
DE1428679C1 (en) * 1964-12-29 1977-09-15 Deutsch Franz Forsch Inst Hard core bullet for fighting tank targets
GB1514908A (en) * 1974-01-22 1978-06-21 Mallory Metallurg Prod Ltd Armour piercing projectiles
AU545632B2 (en) * 1980-11-05 1985-07-25 Pacific Technica Corp. Frangible projectile

Also Published As

Publication number Publication date
EP0073385B2 (en) 1993-03-31
EP0073385A1 (en) 1983-03-09
DE3274294D1 (en) 1987-01-02
AT23632T (en) 1986-11-15

Similar Documents

Publication Publication Date Title
US4836108A (en) Material for multiple component penetrators and penetrators employing same
US4108072A (en) Armor-piercing projectile having spaced cores
US6186072B1 (en) Monolithic ballasted penetrator
US4497253A (en) Armor-piercing projectile
EP1038151B1 (en) Lead-free tin projectile
US3599573A (en) Composite preformed penetrators
US4612860A (en) Projectile
US4458599A (en) Frangible tungsten penetrator
EP0111712B1 (en) Sub-calibre penetrator with a high length-to-diameter ratio
EP0073385B1 (en) Multiple component penetrator projectile
GB2033556A (en) Dummy projectile
EP0113833B1 (en) Projectile with explosive and incendiary action
US4697525A (en) Subcaliber, armor piercing penetrator projectile
EP0256382B1 (en) Hollow-charge war head and manufacturing method therefor
EP0156948B1 (en) Fin-stabilized subcalibre missile with a high length-to-diameter ratio
EP1745260B1 (en) Lead-free projectile
SE442059B (en) ALUMINUM COATED PROJECTIL FOR THE Weapons
EP0955517A1 (en) Ammunition with multiple warheads
JPH0213797A (en) Projectile core for sabot projectile
US5872327A (en) Subcaliber, spin stabilized multi-purpose projectile
RU2754907C2 (en) Improved fragmentation shell and its manufacturing method
EP1223404A2 (en) Warhead
EP0007695A1 (en) Frangible projectile body
DE3339078A1 (en) Fin-stabilised sub-calibre projectile of high length/diameter ratio
Held et al. The importance of jet tip velocity for the performance of shaped charges against explosive reactive armor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT DE FR GB NL

17P Request for examination filed

Effective date: 19820813

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB NL

REF Corresponds to:

Ref document number: 23632

Country of ref document: AT

Date of ref document: 19861115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3274294

Country of ref document: DE

Date of ref document: 19870102

ET Fr: translation filed
26 Opposition filed

Opponent name: WERKZEUGMASCHINENFABRIK OERLIKON - BUEHRLE AG

Effective date: 19870609

NLR1 Nl: opposition has been filed with the epo

Opponent name: WERKZEUGMASCHINENFABRIK OERLIKON-BUERLE AG

26 Opposition filed

Opponent name: PACIFIC TECHNICA CORPORATION C/O LEAR SIEGLER, INC

Effective date: 19870811

Opponent name: PECHINEY, S.A.

Effective date: 19870810

Opponent name: TELEDYNE FIRTH STERLING

Effective date: 19870811

NLR1 Nl: opposition has been filed with the epo

Opponent name: PACIFIC TECHNICA CORPORATION C/O LEAR SIEGLER, IN

Opponent name: PECHINEY, S.A.

Opponent name: TELEDYNE FIRTH STERLING

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

27A Patent maintained in amended form

Effective date: 19930331

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT DE FR GB NL

ET3 Fr: translation filed ** decision concerning opposition
NLR2 Nl: decision of opposition
NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970721

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19970722

Year of fee payment: 16

Ref country code: DE

Payment date: 19970722

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19970724

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970728

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980813

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980813

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990301

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980813

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990430

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19990301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO