WO2002035176A1 - Penetrator arrow projectile - Google Patents
Penetrator arrow projectile Download PDFInfo
- Publication number
- WO2002035176A1 WO2002035176A1 PCT/NO2001/000398 NO0100398W WO0235176A1 WO 2002035176 A1 WO2002035176 A1 WO 2002035176A1 NO 0100398 W NO0100398 W NO 0100398W WO 0235176 A1 WO0235176 A1 WO 0235176A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- projectile
- arrow
- charge
- bleed
- launcher
- Prior art date
Links
Classifications
-
- 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
- F42B10/40—Range-increasing arrangements with combustion of a slow-burning charge, e.g. fumers, base-bleed projectiles
Definitions
- the present invention relates to a so-called penetrator arrow projectile, i.e. a slim projectile, which constitutes a penetrator, for launching by use of a launcher projectile which comprises a propellant charge and which may be separated from the arrow projectile in the trajectory.
- a so-called penetrator arrow projectile i.e. a slim projectile, which constitutes a penetrator, for launching by use of a launcher projectile which comprises a propellant charge and which may be separated from the arrow projectile in the trajectory.
- DE 4018385 shows a subcalibre practice projectile having a liner in the form of a forward disc and a rearward cone, whereby the disc and the cone guide the projectile in the weapon tube.
- the disc also constitutes a seal for the propellant gases in the weapon tube, and it is divivible and releases in the trajectory of the projectile, while the cone shall accompany the projectile and decrease the braking effect caused by the air, and a so-called "base-bleed" charge is situated rearwardmost on the cone, in order to emit a gas which reduces the drag on the projectile caused by the underpressure and the formation of a vortex behind the cone.
- the "base-bleed” charge which is ignited during the launching and burns while the projectile is in the trajectory, develops a gas which mainly shall only "fill” the region behind the cone in order to reduce the underpressure and the vortex formation, and has little or no effect as propellant charge.
- the projectile according to the invention is characterized in that a "base-bleed" charge is situated rearwardmost on the arrow projectile, in order to be ignited by means of an igniter device in connection with the separation from the launcher projectile.
- the arrow projectile is slim compared with the launcher projectile, and has a small air resistance, and the velocity in the trajectory is also maintained by the "base-bleed" charge which burns and emits a gas. Thereby is achieved a large impact velocity and increased range.
- the "base-bleed” charge is not ignited during the launching, because this would have a small effect as long as the launcher projectile propels the arrow projectile.
- the launcher projectile ceases to act as propellant projectile, the launcher projectile is released, and the slimmer arrow projectile continues in the trajectory while the "base- bleed” charge burns.
- a rocket motor can be used as launcher projectile.
- the separation between the two projectiles may actuate an igniter device for the "base- bleed" charge, but ignition may also be achieved in another manner, for instance by timing relatively to the moment of launching.
- the igniter device may be situated in the launcher projectile.
- Fig. 1 shows an embodiment of the rear end of the arrow projectile according to the invention.
- Fig. 2 shows another embodiment of the rear end of the arrow projectile.
- Fig. 3 shows an arrow projectile.
- Fig. 4 shows the forward end of a rocket motor, carrying an arrow projectile.
- a "base- bleed" charge 2 which can develop a gas by combustion.
- a cavity along the center of the charge 2 is a cavity, and the charge is adapted to burn radially outwardly from the cavity.
- a charge may be used which burn from the rear end or a charge with both types of combustion.
- an igniter 3 In order to ignite the charge at a specific point of time after the launching an igniter 3 is mounted, shown coupled to a wire which transmits an ignition signal from for instance an electronic unit in the forward part of the projectile.
- a mechanical igniter device may also be used.
- the igniter device may be mounted in a rocket motor used as launcher projectile for the arrow projectile.
- a gasket 4 and a nozzle 5 mounted centrally
- Fig. 2 shows two gaskets 4 and two nozzles 5 diametrically opposite.
- the gaskets protect the "base-bleed" charge against influence from for instance humidity in the air during storing.
- Fig. 2 shows a sensor 12 on the outside of the rear plate 7, for possible communication and guidance. This sensor has no connection with the "base-bleed" function.
- the “base-bleed” charge is shown in a cavity in the arrow projectile.
- the “base-bleed” charge may also be mounted in a separate unit which can be mounted on the rear end of the arrow projectile.
- Fig. 3 shows an arrow projectile according to the invention, with tail fins 11. These may for instance be in a number of four, distributed with a spacing of 90°.
- Fig. 4 shows the forward end of a rocket motor 8, which acts according to known principles and which is not explained more detailed.
- the rocket motor is ignited in a weapon and accelerates itself and the arrow projectile being coupled to the forward end of the motor 8, until the motor burns out and is released from the arrow projectile 1.
- the arrow projectile has rear fins 11 , which may be distributed with 90° and are inserted in grooves in a nose portion 10 of the motor 8.
- the projectile shown is a subcalibre relatively to the rocket motor or another launcher projectile used.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001292460A AU2001292460A1 (en) | 2000-09-29 | 2001-09-28 | Penetrator arrow projectile |
CA002424382A CA2424382C (en) | 2000-09-29 | 2001-09-28 | Penetrator arrow projectile |
US10/381,760 US20040011236A1 (en) | 2000-09-29 | 2001-09-28 | Penetrator arrow projectile |
EP01972820A EP1320717A1 (en) | 2000-09-29 | 2001-09-28 | Penetrator arrow projectile |
IL15506401A IL155064A0 (en) | 2000-09-29 | 2001-09-28 | Penetrator arrow projectile |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20004927 | 2000-09-29 | ||
NO20004927A NO313344B1 (en) | 2000-09-29 | 2000-09-29 | Penetrator-pilprosjektil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002035176A1 true WO2002035176A1 (en) | 2002-05-02 |
Family
ID=19911636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO2001/000398 WO2002035176A1 (en) | 2000-09-29 | 2001-09-28 | Penetrator arrow projectile |
Country Status (8)
Country | Link |
---|---|
US (1) | US20040011236A1 (en) |
EP (1) | EP1320717A1 (en) |
AU (1) | AU2001292460A1 (en) |
CA (1) | CA2424382C (en) |
IL (1) | IL155064A0 (en) |
NO (1) | NO313344B1 (en) |
WO (1) | WO2002035176A1 (en) |
ZA (1) | ZA200302166B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4018385A1 (en) * | 1990-06-08 | 1991-12-12 | Rheinmetall Gmbh | Sub-calibre heavy practice shell - with base-bleed fitting for rapid shell drop on target overshoot |
SE508072C2 (en) * | 1995-09-13 | 1998-08-24 | Bofors Ab | Armour piercing missile |
EP0905473A1 (en) * | 1997-09-24 | 1999-03-31 | Giat Industries | Large-calibre long range projectile for artillery |
WO2000075599A1 (en) * | 1999-06-04 | 2000-12-14 | Nammo Raufoss As | Propelling device for a projectile in a missile |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2804823A (en) * | 1955-05-13 | 1957-09-03 | Jablansky Louis | Multiple unit projectile |
US2945442A (en) * | 1958-01-02 | 1960-07-19 | Barnet R Adelman | Explosive separation device |
-
2000
- 2000-09-29 NO NO20004927A patent/NO313344B1/en not_active IP Right Cessation
-
2001
- 2001-09-28 EP EP01972820A patent/EP1320717A1/en not_active Withdrawn
- 2001-09-28 US US10/381,760 patent/US20040011236A1/en not_active Abandoned
- 2001-09-28 CA CA002424382A patent/CA2424382C/en not_active Expired - Fee Related
- 2001-09-28 WO PCT/NO2001/000398 patent/WO2002035176A1/en not_active Application Discontinuation
- 2001-09-28 AU AU2001292460A patent/AU2001292460A1/en not_active Abandoned
- 2001-09-28 IL IL15506401A patent/IL155064A0/en unknown
-
2003
- 2003-03-18 ZA ZA200302166A patent/ZA200302166B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4018385A1 (en) * | 1990-06-08 | 1991-12-12 | Rheinmetall Gmbh | Sub-calibre heavy practice shell - with base-bleed fitting for rapid shell drop on target overshoot |
SE508072C2 (en) * | 1995-09-13 | 1998-08-24 | Bofors Ab | Armour piercing missile |
EP0905473A1 (en) * | 1997-09-24 | 1999-03-31 | Giat Industries | Large-calibre long range projectile for artillery |
WO2000075599A1 (en) * | 1999-06-04 | 2000-12-14 | Nammo Raufoss As | Propelling device for a projectile in a missile |
Also Published As
Publication number | Publication date |
---|---|
NO20004927D0 (en) | 2000-09-29 |
CA2424382A1 (en) | 2002-05-02 |
AU2001292460A1 (en) | 2002-05-06 |
NO20004927L (en) | 2002-04-02 |
EP1320717A1 (en) | 2003-06-25 |
US20040011236A1 (en) | 2004-01-22 |
IL155064A0 (en) | 2003-10-31 |
ZA200302166B (en) | 2004-02-16 |
NO313344B1 (en) | 2002-09-16 |
CA2424382C (en) | 2006-02-07 |
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121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
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