EP0123978A2 - Nose cap for a projectile with an armour-piercing core - Google Patents

Nose cap for a projectile with an armour-piercing core Download PDF

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Publication number
EP0123978A2
EP0123978A2 EP84104043A EP84104043A EP0123978A2 EP 0123978 A2 EP0123978 A2 EP 0123978A2 EP 84104043 A EP84104043 A EP 84104043A EP 84104043 A EP84104043 A EP 84104043A EP 0123978 A2 EP0123978 A2 EP 0123978A2
Authority
EP
European Patent Office
Prior art keywords
projectile
hood
tip
balancing
air
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
EP84104043A
Other languages
German (de)
French (fr)
Other versions
EP0123978A3 (en
EP0123978B1 (en
Inventor
Klaus Walter Klein
Klaus Gersbach
Jürgen Dr. Böcker
Jean-Claude Sauvestre
Patrick Montier
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.)
Rheinmetall Industrie AG
Direction General pour lArmement DGA
Etat Francais
Original Assignee
Rheinmetall GmbH
Direction General pour lArmement DGA
Etat Francais
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 Rheinmetall GmbH, Direction General pour lArmement DGA, Etat Francais filed Critical Rheinmetall GmbH
Priority to AT84104043T priority Critical patent/ATE31364T1/en
Publication of EP0123978A2 publication Critical patent/EP0123978A2/en
Publication of EP0123978A3 publication Critical patent/EP0123978A3/en
Application granted granted Critical
Publication of EP0123978B1 publication Critical patent/EP0123978B1/en
Expired 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
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/061—Sabots for long rod fin stabilised kinetic energy projectiles, i.e. multisegment sabots attached midway on the projectile

Definitions

  • the invention relates to a tip body according to claim 1.
  • the sabot in the vicinity of the front part of the balancing projectile has a comprehensive air pocket for detaching the segments of the sabot from the balancing projectile after leaving a weapon barrel under the incoming air.
  • an uneven detachment of the sabot segments from the balancing projectile was found. This can lead to a harmful swinging of the balancing bullet. Due to the oscillation of the balancing bullet, both its accuracy as well as its penetration performance can be significantly impaired.
  • the latter primarily relates to the effect against new types of targets, which require both particularly long balancing bullets and the greatest possible freedom of oscillation.
  • Investigations into the behavior of the balancing projectile-sabot arrangement showed that unstable flow conditions can occur in the area around the front part of the balancing projectile, which impair the uniform segment-wise detachment of the sabot.
  • the invention has for its object to provide a tip body of the type mentioned.
  • a balancing projectile 1 which is only partially shown, has a projectile tip 10 with a circular-conical region 12.
  • the projectile tip 10 is a substantially circular cylindrical plastic hood 14 with longitudinal axial recesses 13 and a retracted front face 15 pushed and glued.
  • the plastic hood 14 is supported with a rear inner surface 19 on a floor circumferential counter surface 18 and has an outer diameter 16 which approximately corresponds to a largest outer diameter 17 of the balancing bullet 1.
  • a body 20 is fastened on a projectile tip 11 which is only shown in sections.
  • a diameter 22 of the projectile tip is increased by a predeterminable amount in an area 21.
  • the body 20 is made of a material that is consumed by melting, softening and / or burning under the friction of the incoming air after leaving the gun barrel.
  • a material that is consumed by melting, softening and / or burning under the friction of the incoming air after leaving the gun barrel In addition to a thermoplastic, Wood's or Rose's metal or a magnesium alloy are suitable.
  • a balancing projectile sabot arrangement with one of the tip bodies 14 or 20 according to the invention leaves the weapon barrel in the direction of an arrow S, the tip body in question, owing to its respective diameter, prevents pressure fluctuations from interfering with the detaching process of the sabot segments.
  • an unfavorable c w coefficient in the top range is accepted.
  • the predetermined breaking points 13 take effect in the plastic hood 14 under the dynamic pressure of the air in the region of the inflow surface 16. The plastic fragments separate from the tip 10 of the floor and there is an instantaneous more favorable c w coefficient.
  • the more favorable c coefficient is established after the consumption of the material of the body 20.
  • the invention is characterized by good effectiveness with simplicity and low costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

An improved nose construction for a subcaliber inertial projectile which is fired with the aid of a sabot. A hood or body is mounted on the nose portion of the projectile. The hood is made of synthetic material and includes longitudinally extending fracture zones and is of substantially cylindrical shape. The frontal portion of the hood is recessed and forms an air flow receiving surface. In lieu of a hood a body, made of a thermoplastic material or the like, may be mounted on the nose portion. This body is adapted to disintegrate as result of air friction. The presence of the hood or body on the nose portion of the projectile, as it exits from a non-illustrated gun barrel, avoids or at least reduces unfavorable air-streaming forces which destabilize the flight characteristics of the projectile and thereby favors a uniform separation of the sabot segments from the projectile. Such uniform separation reduces or completely eliminates undesirable oscillations during flight of the projectile. After the hood or body have disintegrated the projectile acquires a more favorable cw value (drag coefficient during flight.

Description

Die Erfindung betrifft einen Spitzenkörper nach dem Patentanspruch 1.The invention relates to a tip body according to claim 1.

Bei Wuchtgeschoß-Treibkäfig-Anordnungen, wie beispielsweise aus der DE-PS 22 36 142 bekannt, weist der Treibkäfig in der Nachbarschaft des Wuchtgeschoßvorderteils eine letzteren umfassende Lufttasche zum Ablösen der Treibkäfigsegmente vom Wuchtgeschoß nach dem Verlassen eines Waffenrohres unter der anströmenden Luft auf. Bei Beschüssen konnte ein ungleichmäßiges Ablösen der Treibkäfigsegmente vom Wuchtgeschoß festgestellt werden. Dies kann zu einer schädlichen Pendelung des Wuchtgeschosses führen. Durch die Pendelung des Wuchtgeschosses kann sowohl dessen Treffgenauigkeit wie auch dessen Durchschlagsleistung empfindlich beeinträchtigt werden. Letzteres bezieht sich vornehmlich auf die Wirkung gegen neuartige Ziele, die sowohl besonders lange Wuchtgeschosse wie auch deren weitestgehende Pendelungsfreiheit erforderlich machen. Untersuchungen zum Verhalten von Wuchtgeschoß-Treibkäfig-Anordnung ergaben, daß im Bereich um den Vorderteil des Wuchtgeschosses instabile Strömungsverhältnisse auftreten können, die das gleichmäßige segmentweise Ablösen des Treibkäfigs beeinträchtigen.In the case of balancing projectile sabot arrangements, as is known, for example, from DE-PS 22 36 142, the sabot in the vicinity of the front part of the balancing projectile has a comprehensive air pocket for detaching the segments of the sabot from the balancing projectile after leaving a weapon barrel under the incoming air. In the event of shelling, an uneven detachment of the sabot segments from the balancing projectile was found. This can lead to a harmful swinging of the balancing bullet. Due to the oscillation of the balancing bullet, both its accuracy as well as its penetration performance can be significantly impaired. The latter primarily relates to the effect against new types of targets, which require both particularly long balancing bullets and the greatest possible freedom of oscillation. Investigations into the behavior of the balancing projectile-sabot arrangement showed that unstable flow conditions can occur in the area around the front part of the balancing projectile, which impair the uniform segment-wise detachment of the sabot.

Der Erfindung liegt die Aufgabe zugrunde, einen Spitzenkörper der eingangs genannten Gattung zu schaffen.The invention has for its object to provide a tip body of the type mentioned.

Gelöst wird diese Aufgabe durch die im Patentanspruch 1 angegebene Erfindung.This object is achieved by the invention specified in claim 1.

Die Erfindung wird nachstehend anhand zweier in der Zeichnung dargestellter bevorzugter Ausführungsbeispiele näerh erläutert.The invention is explained below with reference to two preferred embodiments shown in the drawing.

Es zeigen

  • Fig. l einen ersten Spitzenkörper nach der Erfindung im teilweisen längsaxialen Schnitt,
  • Fig. 2 den Spitzenkörper im Schnitt nach der Linie II - II in Fig. 1 und
  • Fig. 3 einen zweiten Spitzenkörper nach der Erfindung ausschnittweise und im teilweisen längsaxialen Schnitt.
Show it
  • 1 shows a first tip body according to the invention in a partial longitudinal axial section,
  • Fig. 2 shows the tip body in section along the line II - II in Fig. 1 and
  • Fig. 3 shows a second tip body according to the invention in sections and in partial longitudinal axial section.

Nach den Fig. l und 2 weist ein nur teilweise dargestelltes Wuchtgeschoß 1 eine Geschoßspitze 10 mit einem kreiskegelförmigen Bereich 12 auf. Der Geschoßspitze 10 ist eine im wesentlichen kreiszylindrische Kunststoffhaube 14 mit längsaxialen Ausnehmungen 13 und einer eingezogenen vorderseitigen Anströmfläche 15 aufgeschoben und angeklebt. Die Kunststoffhaube 14 stützt sich mit einer rückseitigen Innenfläche 19 auf einer geschoßumfangsseitigen Gegenfläche 18 ab und weist einen Außendurchmesser 16 auf, der näherungsweise einem größten Außendurchmesser 17 des Wuchtgeschosses 1 entspricht.According to FIGS. 1 and 2, a balancing projectile 1, which is only partially shown, has a projectile tip 10 with a circular-conical region 12. The projectile tip 10 is a substantially circular cylindrical plastic hood 14 with longitudinal axial recesses 13 and a retracted front face 15 pushed and glued. The plastic hood 14 is supported with a rear inner surface 19 on a floor circumferential counter surface 18 and has an outer diameter 16 which approximately corresponds to a largest outer diameter 17 of the balancing bullet 1.

Nach der Fig. 3 ist auf einernur ausschnittweise dargestellten Geschoßspitze 11 ein Körper 20 befestigt. Durch letzteren wird in einem Bereich 21 ein Durchmesser 22 der Geschoßspitze um ein vorgebbares Maß vergrößert.According to FIG. 3, a body 20 is fastened on a projectile tip 11 which is only shown in sections. As a result of the latter, a diameter 22 of the projectile tip is increased by a predeterminable amount in an area 21.

Der Körper 20 besteht aus einem Werkstoff, der sich unter der Reibung der anströmenden Luft nach dem Verlassen des Waffenrohres durch Schmelzen, Erweichen und/oder Verbrennen verbraucht. Neben einem Thermoplast eignen sich beispielsweise Wood'sches oder Rose's Metall oder eine Magnesiumlegierung.The body 20 is made of a material that is consumed by melting, softening and / or burning under the friction of the incoming air after leaving the gun barrel. In addition to a thermoplastic, Wood's or Rose's metal or a magnesium alloy are suitable.

Verläßt eine Wuchtgeschoß-Treibkäfiganordnung mit einem der Spitzenkörper 14 oder 20 nach der Erfindung das Waffenrohr in Richtung eines Pfeils S, verhindert der betreffende Spitzenkörper infolge seines jeweiligen Durchmessers, daß sich Druckschwankungen störend auf den Ablösevorgang der Treibkäfigsegmente auswirken. Hierfür wird ein ungünstiger cw-Beiwert im Spitzenbereich in Kauf genommen. Nach dem ungestörten Ablösevorgang werden bei der Kunststoffhaube 14 unter dem Staudruck der Luft im Bereich der Anströmfläche 16 die Sollbruchstellen 13 wirksam. Die Kunststoffbruchstücke trennen sich von der Geschoßspitze 10 und es stellt sich augenblicklich ein günstigerer c w -Beiwert ein.If a balancing projectile sabot arrangement with one of the tip bodies 14 or 20 according to the invention leaves the weapon barrel in the direction of an arrow S, the tip body in question, owing to its respective diameter, prevents pressure fluctuations from interfering with the detaching process of the sabot segments. For this purpose, an unfavorable c w coefficient in the top range is accepted. After the undisturbed detachment process, the predetermined breaking points 13 take effect in the plastic hood 14 under the dynamic pressure of the air in the region of the inflow surface 16. The plastic fragments separate from the tip 10 of the floor and there is an instantaneous more favorable c w coefficient.

Im Falle des Körpers 20 stellt sich der günstigere c -Beiwert nach dem Verbrauch des Werkstoffs des Körpers 20 ein.In the case of the body 20, the more favorable c coefficient is established after the consumption of the material of the body 20.

Die Erfindung zeichnet sich aus durch gute Wirksamkeit bei Einfachheit und geringen Kosten.The invention is characterized by good effectiveness with simplicity and low costs.

Claims (4)

1. Spitzenkörper für ein Wuchtgeschoß großen Länge/Durchmesserverhältnisses, der zum Verbessern des nach dem Verlassen eines Waffenrohres einsetzenden Ablösevorgangs von Segmenten eines Treibkäfigs von dem Wuchtgeschoß formveränderlich gestaltet ist.1. tip body for a balancing projectile of great length / diameter ratio, which is designed to improve the shape of the segments after the leaving of a weapon barrel, the detachment process of segments of a sabot from the balancing projectile. 2. Spitzenkörper nach Anspruch 1, gekennzeichnet durch folgende Merkmale: a) einem im wesentlichen kreiskegelförmigen Bereich ( 12 ) der Geschoßspitze ( 10 ) ist eine kreiszylindrische Haube ( 14 ) aufgeschoben, deren Außendurchmesser ( 16 ) näherungsweise einem größ- ten Außendurchmesser ( 17 ) des Wuchtgeschosses (1) entspricht, b) die Haube ( 14 ) wird vorderseitig von einer eingezogenen Anströmfläche ( 15 ) begrenzt und weist umfangsseitige längsachsenparallele Ausnehmungen ( 13 ) auf, c) die Ausnehmungen ( 13 ) sind als Sollbruchstellen derart ausgebildet, d) daß sie unter dem Anströmdruck der Luft nach Verlassen des Waffenrohres zum Zerbrechen und Entfernen der Haube ( 14 von der Geschoßspitze ( 10 ) führen, wodurch sich der Luftwiderstandsbeiwert des Wuchtgeschosses verbessert. 2. Tip body according to claim 1, characterized by the following features: a) a circular-cylindrical hood (14) is pushed onto an essentially circular-conical area (12) of the projectile tip (10), the outer diameter (16) of which approximately corresponds to a largest outer diameter (17) of the balancing projectile (1), b) the hood ( 14 ) is delimited on the front by a drawn-in inflow surface (15) and has recesses (13) on the circumferential side parallel to the longitudinal axis, c) the recesses (13) are designed as predetermined breaking points, d) that they lead to breaking and removal of the hood (14 from the projectile tip (10) under the inflow pressure of the air after leaving the weapon barrel, whereby the air resistance coefficient of the balancing projectile improves. 3. Spitzenkörper nach Anspruch 2, dadurch gekennzeichnet, daß die Haube ( 14 ) aus einem Werkstoff vergleichsweise geringer Dichte gefertigt ist.3. tip body according to claim 2, characterized in that the hood (14) is made of a material of comparatively low density. 4. Spitzenkörper nach Anspruch 1, gekennzeichnet durch folgende Merkmale: a) an der Geschoßspitze ( 11 ) ist ein Körper ( 20 ) befestigt, der in dem ihm zugeordneten Bereich ( 21 ) den Durchmesser ( 22 ) um ein vorgebbares Maß vergrößert und b) der Körper ( 20 ) ist aus einem Werkstoff gefertigt, der sich unter der Reibung der anströmenden Luft nach Verlassen des Waffenrohres durch Schmelzen, Erweichen und/oder Verbrennen verbraucht, wodurch sich der Luftwiderstandsbeiwert des Wuchtgeschosses verbessert. 4. Tip body according to claim 1, characterized by the following features: a) on the projectile tip (11) a body ( 20 ) is attached, which increases the diameter (22) by a predeterminable amount in the area (21) assigned to it b) the body (20) is made of a material which is consumed by melting, softening and / or burning under the friction of the incoming air after leaving the weapon barrel, which improves the drag coefficient of the balancing bullet.
EP84104043A 1983-04-23 1984-04-11 Nose cap for a projectile with an armour-piercing core Expired EP0123978B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84104043T ATE31364T1 (en) 1983-04-23 1984-04-11 POINT BODY FOR AN IMPACT BULLET.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3314751 1983-04-23
DE19833314751 DE3314751A1 (en) 1983-04-23 1983-04-23 LACE BODY FOR A BALANCE SHEET

Publications (3)

Publication Number Publication Date
EP0123978A2 true EP0123978A2 (en) 1984-11-07
EP0123978A3 EP0123978A3 (en) 1985-05-15
EP0123978B1 EP0123978B1 (en) 1987-12-09

Family

ID=6197166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104043A Expired EP0123978B1 (en) 1983-04-23 1984-04-11 Nose cap for a projectile with an armour-piercing core

Country Status (4)

Country Link
US (1) US4714024A (en)
EP (1) EP0123978B1 (en)
AT (1) ATE31364T1 (en)
DE (2) DE3314751A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3632629A1 (en) * 1986-09-25 1988-04-07 Rodenstock Optik G Tiltable glasses
GB2251290A (en) * 1984-05-23 1992-07-01 Dynamit Nobel Ag Shells with fitted cap

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3609092A1 (en) * 1986-03-19 1990-11-22 Rheinmetall Gmbh BULLET FOR A TUBE ARM TO FIGHT ACTIVE AND PASSIVELY REACTIVE SPECIAL ARMOR
US5138949A (en) * 1990-09-20 1992-08-18 Olin Corporation Combustible ammunition cartridge case
US5870647A (en) * 1992-11-09 1999-02-09 Canon Kabushiki Kaisha Pedestal for supporting equipment
US5323708A (en) * 1993-03-29 1994-06-28 Aerojet-General Corporation Clip-lock sabot cap
DE102019113325A1 (en) * 2019-05-20 2020-11-26 Rheinmetall Waffe Munition Gmbh Penetrator, use of a penetrator and bullet
US20230358518A1 (en) * 2022-05-05 2023-11-09 Raytheon Company Sabot or cover for seekers, sensitive windows and surface elements on gun launched munitions

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2401380A (en) * 1941-12-15 1946-06-04 Alfred F Teitscheid Projectile cap
US3446147A (en) * 1966-03-04 1969-05-27 Oerlikon Buehrle Holding Ag Casing for the sabot of a projectile
DE2034618A1 (en) * 1969-09-23 1971-04-15 Pacific Techmca Corp , Santa Bar bara. Cahf (VStA) Projectile movable towards a target
DE1703507C (en) * 1968-05-31 1973-04-26 Rheinmetaü GmbH, 4000 Dusseldorf Wing stabilized undercarriage
US3747533A (en) * 1970-12-08 1973-07-24 Oerlikon Buehrle Ag Short trajectory missile
EP0036232A1 (en) * 1980-03-18 1981-09-23 FABRIQUE NATIONALE HERSTAL en abrégé FN Société Anonyme Training projectile
DE3047517A1 (en) * 1980-12-17 1982-07-01 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Practice shell with driving ring - has core inside segmented sleeve connected to grooved driving ring carrying reinforcing ring
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148472A (en) * 1962-06-11 1964-09-15 Edward N Hegge Subcaliber projectile and sabot for high velocity firearms
US3902424A (en) * 1973-12-07 1975-09-02 Us Army Projectile

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2401380A (en) * 1941-12-15 1946-06-04 Alfred F Teitscheid Projectile cap
US3446147A (en) * 1966-03-04 1969-05-27 Oerlikon Buehrle Holding Ag Casing for the sabot of a projectile
DE1703507C (en) * 1968-05-31 1973-04-26 Rheinmetaü GmbH, 4000 Dusseldorf Wing stabilized undercarriage
DE2034618A1 (en) * 1969-09-23 1971-04-15 Pacific Techmca Corp , Santa Bar bara. Cahf (VStA) Projectile movable towards a target
US3747533A (en) * 1970-12-08 1973-07-24 Oerlikon Buehrle Ag Short trajectory missile
EP0036232A1 (en) * 1980-03-18 1981-09-23 FABRIQUE NATIONALE HERSTAL en abrégé FN Société Anonyme Training projectile
DE3047517A1 (en) * 1980-12-17 1982-07-01 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Practice shell with driving ring - has core inside segmented sleeve connected to grooved driving ring carrying reinforcing ring
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2251290A (en) * 1984-05-23 1992-07-01 Dynamit Nobel Ag Shells with fitted cap
GB2251290B (en) * 1984-05-23 1993-09-22 Dynamit Nobel Ag Shell with fitted cap
DE3632629A1 (en) * 1986-09-25 1988-04-07 Rodenstock Optik G Tiltable glasses

Also Published As

Publication number Publication date
ATE31364T1 (en) 1987-12-15
DE3468072D1 (en) 1988-01-21
EP0123978A3 (en) 1985-05-15
EP0123978B1 (en) 1987-12-09
US4714024A (en) 1987-12-22
DE3314751A1 (en) 1984-10-25

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