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EP1685363A1 - Element percutant d'un projectile - Google Patents

Element percutant d'un projectile

Info

Publication number
EP1685363A1
EP1685363A1 EP04797220A EP04797220A EP1685363A1 EP 1685363 A1 EP1685363 A1 EP 1685363A1 EP 04797220 A EP04797220 A EP 04797220A EP 04797220 A EP04797220 A EP 04797220A EP 1685363 A1 EP1685363 A1 EP 1685363A1
Authority
EP
European Patent Office
Prior art keywords
impact part
impact
part according
target
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.)
Granted
Application number
EP04797220A
Other languages
German (de)
English (en)
Other versions
EP1685363B1 (fr
Inventor
Josef Bissig
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.)
Saab Bofors Dynamics Switzerland Ltd
Original Assignee
RUAG Land Systems 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 RUAG Land Systems AG filed Critical RUAG Land Systems AG
Publication of EP1685363A1 publication Critical patent/EP1685363A1/fr
Application granted granted Critical
Publication of EP1685363B1 publication Critical patent/EP1685363B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/06—Electric contact parts specially adapted for use with electric fuzes
    • F42C19/07—Nose-contacts for projectiles or missiles
    • 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
    • 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
    • F42B12/10—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 shaped or hollow charge
    • F42B12/105—Protruding target distance or stand-off members therefor, e.g. slidably mounted

Definitions

  • the invention relates to an impact part on a projectile which contains at least one active charge and one ignition device activated during impact, the impact part being designed in the form of a cambered cap with a cavity delimited by it.
  • Ignition devices such as those used in tandem hollow charges require a defined impact shock to activate them (see data sheet PEPZ-05 Piezo Fuze System, PEPZ-05, Zaugg Elektronik AG, CH-4573 Lohn-Ammannsegg). It is therefore notoriously known to design the tips of such projectiles more or less solidly in the form of a cambered cap in order to transmit the necessary activation energy to the ignition device contained in the projectile. A curved (rounded) shape of the tip tries to activate the ignition chain even if the projectile hits the target at an angle.
  • the tip of the impact part is thin-walled relative to its side walls, that at least two ring grooves concentric to the direction of flight are embedded in the side walls and that elastomers are inserted in these ring grooves, which fill and / or protrude from the ring grooves.
  • Ring grooves according to the invention attack in the target, even if they strike at an angle and trigger the ignition process.
  • Inlaid elastomers maintain the air resistance values compared to smooth impact parts.
  • the thin-walled tip does not normally affect the effective power of the projectile (oblique angle at the target).
  • Tandem hollow charges hitting the target at an angle of 20 ° to 60 ° are optimal. It has been shown that the tip is damaged during the transmission of the energy required to ignite the charges in this angular range in such a way that the shaped charge jet of the precharge has enough energy to detonate an ERA box (ie the explosives stored in the target). Due to the flat design of the stored explosives, the outer one metallic protective plate of the armor blasted off perpendicular to its base and flies past the projectile, so that the shaped charge of the main charge can now develop its full effect.
  • the tip can be designed in such a way that in the case of a projectile hitting the target surface more or less perpendicularly, the tip absorbs the energy of the first shaped charge jet (the pre-charge) and disrupts its construction so that an ERA box is not ignited.
  • the beam of the main charge then penetrates the already drilled tip, ignites the ERA box, penetrates its metallic cover and can penetrate into the armor - the effect of the projectile in such a case corresponds to that of a simple shaped charge ignited at an optimal distance.
  • the phenomenon remains that the same impact part makes the beam of the pre-charge effective when it hits the target at an oblique angle and not when it hits the target more or less vertically. This can be explained by the fact that when it hits the tip vertically - before it breaks - it turns inside out and thereby massively interferes with the shaped charge jet that is still being built up. The energy of the beam is therefore not sufficient to activate the ERA box.
  • the impact part hooks into the target or cuts into its surface so that the projectile is not deflected and remains at the target; Claim 2.
  • Ring seals according to claim 3 are particularly easy to handle. They are easy to insert and protect the personnel handling the projectile from injuries. When you hit the target, the ring seals are pushed away and release the sharp edges for engagement.
  • O-rings according to claim 4 are particularly economical and resistant in a wide temperature range and do not wear out during normal handling.
  • An external thread according to claim 6 facilitates the assembly of the projectile;
  • service parts with different fracture characteristics can be prepared and adapted to the presumptive goal.
  • the geometric adaptation of the external shape mentioned in claim 7 enables the minimum still initiating angle of incidence to be predetermined.
  • Fig. 3 shows the projectile tip Fig. 1 when hitting an oblique target
  • a head of a projectile of a tandem shaped charge is designated by 1 in FIG.
  • An impact part consists of a tip 2 in the form of a dome with embedded elastomers, ie with O-rings 3 made of silicone rubber, and is placed on a preload with lining 4, explosives 5 and ignition device 6.
  • the entire shell 7 is slim and has a notoriously known main charge, not shown, at the end of its cavity. Between the explosive 5 or the ignition device 6, the shell 7 encloses a cavity 8, which forms the necessary distance to the main cargo, not shown.
  • the very thin-walled tip 2 is designated in its thickness with 22 (wall thickness).
  • an external thread 23 is to be used, which can be screwed into the front end of the shell 7.
  • FIG. 3 shows the front part of the projectile when it strikes a target Z at an oblique angle, designated ⁇ in relation to the direction of flight F.
  • FIG. 4 alternatively shows a head of a larger, arbitrary ammunition body according to the invention with current threads S drawn in.
  • the elastic rings 3 prevent turbulence even at high launch speeds.
  • the subject of the invention permits optimal use of projectiles, even in cases where conventional impact parts lead to failure. This also significantly reduces the dud rate.

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)

Abstract

L'invention concerne un élément percutant d'un projectile permettant d'activer de manière sûre des systèmes d'amorçage piézoélectriques dans une plage d'angle ( alpha ) étendue au niveau de la cible (Z). Des évidements annulaires dans lesquels sont logées des bagues circulaires (3) viennent en prise avec la cible et empêchent un effet de ricochet. Une pointe (2) en forme de calotte à parois minces empêche des effets perturbateurs accrus sur la charge creuse située en aval (4, 5). Un dimensionnement de l'élément percutant conformément aux règles de la mécanique de rupture permet d'obtenir une fragmentation ciblée dudit élément sur la cible.
EP04797220A 2003-11-11 2004-11-03 Element percutant d'un projectile Expired - Lifetime EP1685363B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH19352003A CH696914A5 (de) 2003-11-11 2003-11-11 Aufschlagteil an einem Geschoss.
PCT/CH2004/000662 WO2005045356A1 (fr) 2003-11-11 2004-11-03 Element percutant d'un projectile

Publications (2)

Publication Number Publication Date
EP1685363A1 true EP1685363A1 (fr) 2006-08-02
EP1685363B1 EP1685363B1 (fr) 2010-04-21

Family

ID=34558433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04797220A Expired - Lifetime EP1685363B1 (fr) 2003-11-11 2004-11-03 Element percutant d'un projectile

Country Status (4)

Country Link
EP (1) EP1685363B1 (fr)
CH (1) CH696914A5 (fr)
DE (1) DE502004011079D1 (fr)
WO (1) WO2005045356A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7273010B2 (en) * 2004-11-03 2007-09-25 Saab Bofors Dynamics Switzerland Ltd. Impact part of a projectile
DE102014019197A1 (de) * 2014-12-19 2016-06-23 Diehl Bgt Defence Gmbh & Co. Kg Geschoss

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE530433A (fr) *
CH4573A (de) 1892-02-24 1892-06-30 Lavanchy Clarke F H Neuerung an selbstthätigen Verkaufsapparaten
US6105504A (en) * 1969-06-30 2000-08-22 The United States Of America As Represented By The Secretary Of The Navy Contact exploder
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
AT397867B (de) * 1992-10-27 1994-07-25 Oregon Ets Patentverwertung Geschoss
AT411935B (de) * 2001-09-19 2004-07-26 Oregon Ets Patentverwertung Geschosshaube

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005045356A1 *

Also Published As

Publication number Publication date
DE502004011079D1 (de) 2010-06-02
EP1685363B1 (fr) 2010-04-21
WO2005045356A1 (fr) 2005-05-19
CH696914A5 (de) 2008-01-31

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