GB2123123A - Projectiles - Google Patents

Projectiles Download PDF

Info

Publication number
GB2123123A
GB2123123A GB08317113A GB8317113A GB2123123A GB 2123123 A GB2123123 A GB 2123123A GB 08317113 A GB08317113 A GB 08317113A GB 8317113 A GB8317113 A GB 8317113A GB 2123123 A GB2123123 A GB 2123123A
Authority
GB
United Kingdom
Prior art keywords
band
projectile
groove
projectiles
aluminium
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.)
Withdrawn
Application number
GB08317113A
Other versions
GB8317113D0 (en
Inventor
Randall L Schiestl
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Publication of GB8317113D0 publication Critical patent/GB8317113D0/en
Publication of GB2123123A publication Critical patent/GB2123123A/en
Withdrawn legal-status Critical Current

Links

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
    • F42B12/04—Projectiles, 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
    • F42B12/06—Projectiles, 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
    • 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
    • F42B10/42—Streamlined projectiles
    • F42B10/46—Streamlined nose cones; Windshields; Radomes
    • 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

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)
  • Toys (AREA)

Abstract

The projectile (10) includes an elongate body (11) of aluminium having a closed rearward end, and a peripheral band (21) extending around the body at a location adjacent its rearward end and being of a metal, such as iron, which is different from that of the body. <IMAGE>

Description

SPECIFICATION Projectiles This invention relates to the field of munitions and in particular to projectiles such as armour piercing projectiles to be discharged from guns in the caliber range of 25 millimeters; the guns having rifled gun barrels to impart a stabilizing spin to the projectiles.
It is an aim of the invention to provide a projectile which is relatively light as compared to projectiles with steel bodies, and which have satisfactory barrel wear characteristics.
According to the present invention, there is provided a projectile comprising an elongate body of aluminium having a closed rearward end; and a peripheral band extending around the body at a location adjacent its rearward end, the material of the band being of a metal different from that of the body.
An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a longitudinal section through an armour piercing projectile according to the present invention, and Figure 2 is an enlarged fragmentory view of the area marked A in Fig. 1.
Referring to the drawings, the projectile 10 has an elongate body 11 of aluminium, a penetrator 1 2 of depleted aranium contained within the body, and an aluminium windscreen 1 3. Body 11 is provided with a first peripheral groove 15, for connection by crimping to a cartridge case, not shown, and a second peripheral groove 20 for receiving a peripheral band 21 of metal different from that of body 11, such as soft iron. Fig. 20 shows that groove 20 has dovetailed side walls 22 and 23, and the bottom of the groove includes a section of straight knurling 24. Band 21 is fixed immovably in groove 20 by swaging, which reduces the inside diemeter of the band to fit the groove and engage the knurling, and causes the iron of the band to move laterally under the dovetailed groove walls.Since the band is of soft iron and the body is given to hard coat anodizing, it has been found feasible to swage the band to the body using a mandrel within the body as a backing member.
In one embodiment of the invention the initial inside diameter of the band was 20.5 millimeters, the initial outside diameter of the bottom of the groove was 24.21 millimeters, and the walls of the groove were tapered at an angle of 1 7 degrees.
It will be appreciated that the above described projectile will be relatively light as compared to projectiles with steel bodies and due to the use of a band of iron or similar metal will have satisfactory barrel wear characteristics.
1. A projectile comprising an elongate body of aluminium having a closed rearward end; and a peripheral band extending around the body at a location adjacent its rearward end, the material of the band being of a metal different from that of the body.
The projectile of Claim 1, wherein the body has a peripherally extending groove in its outer surface in which said band is secured.
3. The projectile of Claim 1 or 2, wherein the band is of iron.
4. The projectile of Claim 1, 2 or 3, wherein the band is swaged into position in the groove to prevent relative movement between the body and the band.
5. A projectile substantially as herein described with reference to the accompanying drawings.
6. The or each feature of the projectile described herein either taken alone or in combination.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Projectiles This invention relates to the field of munitions and in particular to projectiles such as armour piercing projectiles to be discharged from guns in the caliber range of 25 millimeters; the guns having rifled gun barrels to impart a stabilizing spin to the projectiles. It is an aim of the invention to provide a projectile which is relatively light as compared to projectiles with steel bodies, and which have satisfactory barrel wear characteristics. According to the present invention, there is provided a projectile comprising an elongate body of aluminium having a closed rearward end; and a peripheral band extending around the body at a location adjacent its rearward end, the material of the band being of a metal different from that of the body. An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a longitudinal section through an armour piercing projectile according to the present invention, and Figure 2 is an enlarged fragmentory view of the area marked A in Fig. 1. Referring to the drawings, the projectile 10 has an elongate body 11 of aluminium, a penetrator 1 2 of depleted aranium contained within the body, and an aluminium windscreen 1 3. Body 11 is provided with a first peripheral groove 15, for connection by crimping to a cartridge case, not shown, and a second peripheral groove 20 for receiving a peripheral band 21 of metal different from that of body 11, such as soft iron. Fig. 20 shows that groove 20 has dovetailed side walls 22 and 23, and the bottom of the groove includes a section of straight knurling 24. Band 21 is fixed immovably in groove 20 by swaging, which reduces the inside diemeter of the band to fit the groove and engage the knurling, and causes the iron of the band to move laterally under the dovetailed groove walls.Since the band is of soft iron and the body is given to hard coat anodizing, it has been found feasible to swage the band to the body using a mandrel within the body as a backing member. In one embodiment of the invention the initial inside diameter of the band was 20.5 millimeters, the initial outside diameter of the bottom of the groove was 24.21 millimeters, and the walls of the groove were tapered at an angle of 1 7 degrees. It will be appreciated that the above described projectile will be relatively light as compared to projectiles with steel bodies and due to the use of a band of iron or similar metal will have satisfactory barrel wear characteristics. CLAIMS
1. A projectile comprising an elongate body of aluminium having a closed rearward end; and a peripheral band extending around the body at a location adjacent its rearward end, the material of the band being of a metal different from that of the body.
The projectile of Claim 1, wherein the body has a peripherally extending groove in its outer surface in which said band is secured.
3. The projectile of Claim 1 or 2, wherein the band is of iron.
4. The projectile of Claim 1, 2 or 3, wherein the band is swaged into position in the groove to prevent relative movement between the body and the band.
5. A projectile substantially as herein described with reference to the accompanying drawings.
6. The or each feature of the projectile described herein either taken alone or in combination.
GB08317113A 1982-07-01 1983-06-23 Projectiles Withdrawn GB2123123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39408782A 1982-07-01 1982-07-01

Publications (2)

Publication Number Publication Date
GB8317113D0 GB8317113D0 (en) 1983-07-27
GB2123123A true GB2123123A (en) 1984-01-25

Family

ID=23557502

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08317113A Withdrawn GB2123123A (en) 1982-07-01 1983-06-23 Projectiles

Country Status (2)

Country Link
DE (1) DE3323386A1 (en)
GB (1) GB2123123A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148462A (en) * 1983-09-21 1985-05-30 Mauser Werke Oberndorf Projectile with rotating band
GB2244119A (en) * 1990-05-18 1991-11-20 Rheinmetall Gmbh Jacketed penetrators

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI100917B (en) * 1996-08-14 1998-03-13 Lapua Oy Procedure for the manufacture of a ball and a ball
DE102010006221A1 (en) * 2010-01-28 2011-08-18 Rheinmetall Waffe Munition GmbH, 29345 Spin-stabilized projectile

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR513606A (en) * 1920-03-24 1921-02-19 Lucien Etienne Emile Jean Bapt New bullet for aviation, tanks, automobiles, machine guns, etc.
GB618009A (en) * 1946-10-14 1949-02-15 Isthmian Metals Inc Improvements in the heat treatment of duplex iron and steel bodies
GB1092678A (en) * 1964-10-08 1967-11-29 Brevets Aero Mecaniques Improvements in armour-piercing projectiles
GB1102632A (en) * 1965-07-22 1968-02-07 Oerlikon Buhrle Holding A G Sabot projectiles
EP0007695A1 (en) * 1978-06-09 1980-02-06 FORD AEROSPACE &amp; COMMUNICATIONS CORPORATION Frangible projectile body
EP0073453A1 (en) * 1981-08-27 1983-03-09 Honeywell Inc. Method of making a practice projectile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR513606A (en) * 1920-03-24 1921-02-19 Lucien Etienne Emile Jean Bapt New bullet for aviation, tanks, automobiles, machine guns, etc.
GB618009A (en) * 1946-10-14 1949-02-15 Isthmian Metals Inc Improvements in the heat treatment of duplex iron and steel bodies
GB1092678A (en) * 1964-10-08 1967-11-29 Brevets Aero Mecaniques Improvements in armour-piercing projectiles
GB1102632A (en) * 1965-07-22 1968-02-07 Oerlikon Buhrle Holding A G Sabot projectiles
EP0007695A1 (en) * 1978-06-09 1980-02-06 FORD AEROSPACE &amp; COMMUNICATIONS CORPORATION Frangible projectile body
EP0073453A1 (en) * 1981-08-27 1983-03-09 Honeywell Inc. Method of making a practice projectile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148462A (en) * 1983-09-21 1985-05-30 Mauser Werke Oberndorf Projectile with rotating band
GB2244119A (en) * 1990-05-18 1991-11-20 Rheinmetall Gmbh Jacketed penetrators
GB2244119B (en) * 1990-05-18 1994-05-18 Rheinmetall Gmbh Jacketed penetrators

Also Published As

Publication number Publication date
GB8317113D0 (en) 1983-07-27
DE3323386A1 (en) 1984-01-12

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)