EP0081058B1 - Butt-joint seal for sabots - Google Patents

Butt-joint seal for sabots Download PDF

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Publication number
EP0081058B1
EP0081058B1 EP82109261A EP82109261A EP0081058B1 EP 0081058 B1 EP0081058 B1 EP 0081058B1 EP 82109261 A EP82109261 A EP 82109261A EP 82109261 A EP82109261 A EP 82109261A EP 0081058 B1 EP0081058 B1 EP 0081058B1
Authority
EP
European Patent Office
Prior art keywords
sealing element
sabot
segments
butt
sabots
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
EP82109261A
Other languages
German (de)
French (fr)
Other versions
EP0081058A1 (en
Inventor
Rudolf Dipl.-Ing. Romer
Walter Simon
Jürgen Dr. Dipl.-Phys. Böcker
Bernhard Bisping
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
Original Assignee
Rheinmetall GmbH
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 filed Critical Rheinmetall GmbH
Publication of EP0081058A1 publication Critical patent/EP0081058A1/en
Application granted granted Critical
Publication of EP0081058B1 publication Critical patent/EP0081058B1/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
    • F42B14/08—Sabots filled with propulsive charges; Removing sabots by combustion of pyrotechnic elements or by propulsive-gas pressure
    • 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
    • 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
    • F42B14/067—Sealing aspects in sabots, e.g. sealing between individual segments of the sabots or sealing between the outer surface of the sabot and the inner surface of the barrel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S102/00—Ammunition and explosives
    • Y10S102/703—Flechette

Definitions

  • the invention relates to a flat sealing element according to the preamble of patent claim 1.
  • the gas pressure receiving surface of the sabot has a flat sealing element made of an elastic material which is firmly connected to it, in order to block the propellant gases from passing through the butt joints between the sabot segments. This can lead to difficulties in detaching the segments from the flight floor.
  • the known sealing element forms a disturbing dead load component.
  • the invention has for its object to provide a sealant, which ensures an undisturbed detachment of the sabot segments from the missile and through which the dead load can be reduced.
  • a sabot 10 of a sub-caliber flight projectile 20 has on its gas pressure receiving surface 12 a flat sealing element 14 made of an elastic material, which seals butt joints 22 between segments 16, 18 and 24 of the sabot 10 for propellant gases.
  • the gas pressure receiving surface 52 of the sabot 50 is provided with a sealing element 54, which consists of a foaming agent film.
  • the rate of erosion of the film material can - if necessary by phlegmatization in the butt joints 22 between the segments 56 and 58 - rest areas - to ensure a reliable sealing effect during the passage of the bullet through a gun barrel and not to impede the detachment of the segments from the missile 40.
  • a different portion 62, 64 and 66 of a propellant charge is firmly connected to the film in order to take advantage of the advantages that result from an - at least partially - co-accelerated propellant charge.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Sealing Of Bearings (AREA)
  • Valve Device For Special Equipments (AREA)

Description

Die Erfindung betrifft ein flächiges Abdichtelement gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a flat sealing element according to the preamble of patent claim 1.

Bei einem derartigen aus der US-A-36 20 167 bekannten Treibspiegelgeschoß weist die Gasdruckaufnahmefläche des Treibspiegels ein mit ihr festverbundenes, flächiges Abdichtelement aus einem elastischen Werkstoff auf, um den Treibladungsgasen den Durchtritt durch die Stoßfugen zwischen den Treibspiegelsegmenten zu versperren. Hieraus können sich Schwierigkeiten beim Ablösen der Segmente vom Fluggeschoß ergeben. Außerdem bildet das bekannte Abdichtelement einen störenden Totlastanteil.In such a sabot projectile known from US-A-36 20 167, the gas pressure receiving surface of the sabot has a flat sealing element made of an elastic material which is firmly connected to it, in order to block the propellant gases from passing through the butt joints between the sabot segments. This can lead to difficulties in detaching the segments from the flight floor. In addition, the known sealing element forms a disturbing dead load component.

Der Erfindung liegt die Aufgabe zugrunde, ein Abdichtmittel bereitzustellen, welches einen ungestörten Ablösevorgang der Treibspiegelsegmente vom Fluggeschoß gewährleistet und durch welches sich der Totlastanteil verringern läßt.The invention has for its object to provide a sealant, which ensures an undisturbed detachment of the sabot segments from the missile and through which the dead load can be reduced.

Gelöst wird diese Aufgabe durch die im Patentanspruch 1 angegebene Erfindung, welche nachstehend anhand von vier in der Zeichnung dargestellten bevorzugten Ausführungsbeispielen des näheren erläutert wird.This object is achieved by the invention specified in claim 1, which is explained below with reference to four preferred exemplary embodiments shown in the drawing.

Es zeigen :Show it :

  • Figur 1 eine bislang übliche Anordnung ausschnittweise im längsaxialen Schnitt,FIG. 1 shows a previously customary arrangement in sections in a longitudinal axial section,
  • Figur 2 eine Draufsicht in Richtung eines Pfeils II in Figur 1 undFigure 2 is a plan view in the direction of an arrow II in Figure 1 and
  • Figuren 3-6 vier bevorzugte Ausführungsbeispiele nach der Erfindung ausschnittweise im längsaxialen Schnitt.Figures 3-6 four preferred embodiments according to the invention in sections in the longitudinal axial section.

Gemäß Figur 1 und Figur 2 weist ein Treibspiegel 10 eines Unterkaliberfluggeschosses 20 auf seiner Gasdruckaufnahmefläche 12 ein flächiges Abdichtelement 14 aus einem elastischen Werkstoff auf, welches Stoßfugen 22, zwischen Segmenten 16, 18 und 24 des Treibspiegels 10 für Treibladungsgase verschließt.According to FIG. 1 and FIG. 2, a sabot 10 of a sub-caliber flight projectile 20 has on its gas pressure receiving surface 12 a flat sealing element 14 made of an elastic material, which seals butt joints 22 between segments 16, 18 and 24 of the sabot 10 for propellant gases.

Beim Ausführungsbeispiel gemäß Figur 3 ist die Gasdruckaufnahmefläche 52 des Treibspiegels 50 mit einem Abdichtelement 54 versehen, das aus einer Treibmittelfolie besteht. Die Abbrandgeschwindigkeit des Folienwerkstoffs ist - im Bedarfsfall durch Phlegmatisierung in den Stoßfugen 22 zwischen den Segmenten 56 und 58 aufliegenden Bereichen - genau vorgebbar, um eine zuverlässige Dichtwirkung während des Geschoßdurchgangs durch ein Waffenrohr zu gewährleisten und den Ablösevorgang der Segmente vom Fluggeschoß 40 nicht zu behindern.In the exemplary embodiment according to FIG. 3, the gas pressure receiving surface 52 of the sabot 50 is provided with a sealing element 54, which consists of a foaming agent film. The rate of erosion of the film material can - if necessary by phlegmatization in the butt joints 22 between the segments 56 and 58 - rest areas - to ensure a reliable sealing effect during the passage of the bullet through a gun barrel and not to impede the detachment of the segments from the missile 40.

Bei den Ausführungsbeispielen nach den Figuren 4, 5 und 6 ist jeweils ein unterschiedlicher Anteil 62, 64 und 66 einer Treibladung mit der Folie fest verbunden, um dieserart die sich aus einer - wenigstens teilweise - mitbeschleunigten Treibladung ergebenden Vorteile wahrzunehmen.In the exemplary embodiments according to FIGS. 4, 5 and 6, a different portion 62, 64 and 66 of a propellant charge is firmly connected to the film in order to take advantage of the advantages that result from an - at least partially - co-accelerated propellant charge.

Claims (2)

1. Laminar sealing element (54) for covering the gas pressure receiving surface (52) of a segmented sabot (50) having a sealing or guide band around the outer periphery and capable of being torn in order to separate the segments (56, 58) from a sub-calibre projectile (40) characterised by the fact that the sealing element (54) is produced in the form of a layer of propulsion charge material and located at least in certain zones of butt joints (22) which extend between the segments (56, 58) of the sabot (50).
2. Sealing means in accordance with Claim 1, characterised by the fact that a preselectable portion (62, 64, 66) of a propulsion charge is rigidly connected to the sealing element (54).
EP82109261A 1981-12-05 1982-10-07 Butt-joint seal for sabots Expired EP0081058B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3148264 1981-12-05
DE19813148264 DE3148264A1 (en) 1981-12-05 1981-12-05 USE OF A PART OF A DRIVE CHARGE AS A SEALANT

Publications (2)

Publication Number Publication Date
EP0081058A1 EP0081058A1 (en) 1983-06-15
EP0081058B1 true EP0081058B1 (en) 1986-07-30

Family

ID=6148023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109261A Expired EP0081058B1 (en) 1981-12-05 1982-10-07 Butt-joint seal for sabots

Country Status (6)

Country Link
US (1) US4598644A (en)
EP (1) EP0081058B1 (en)
JP (1) JPS58127099A (en)
DE (2) DE3148264A1 (en)
ES (1) ES517728A0 (en)
IL (1) IL66902A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3428712A1 (en) * 1984-08-03 1986-02-13 Diehl GmbH & Co, 8500 Nürnberg Projectile having an additional propulsion charge
GB2238602B (en) * 1988-04-06 1992-03-25 British Aerospace Sabot booster
US7013811B1 (en) * 2003-04-08 2006-03-21 The United States Of America As Represented By The Secretary Of The Army Sabot for reducing the parasitic weight of a kinetic energy projectile

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1899618A (en) * 1932-07-07 1933-02-28 Holthe John Cartridge
CH495547A (en) * 1968-05-31 1970-08-31 Rheinmetall Gmbh Wing-stabilized sub-caliber bullet
SE377840B (en) * 1972-04-20 1975-07-28 Ladco Enterprises Ltd
DE2229192A1 (en) * 1972-06-15 1974-01-10 Rheinmetall Gmbh DRIVING CHARGE FOR STORIES OF HIGH INITIAL SPEED
NL174873C (en) * 1972-07-22 1984-08-16 Rheinmetall Gmbh SUB-CALIBER PROJECTILE WITH TAIL FINS.
DE2836963A1 (en) * 1978-08-24 1984-03-08 Rheinmetall GmbH, 4000 Düsseldorf AMMUNITION UNIT FOR TUBE ARMS
US4444113A (en) * 1981-04-06 1984-04-24 The United States Of America As Represented By The Secretary Of The Army High-pressure self-sealing obturator in sabot discard projectile
US4424748A (en) * 1981-08-07 1984-01-10 The United States Of America As Represented By The Secretary Of The Army Segmented seal for discarding sabot ammunition

Also Published As

Publication number Publication date
DE3272340D1 (en) 1986-09-04
ES8308057A1 (en) 1983-08-16
EP0081058A1 (en) 1983-06-15
US4598644A (en) 1986-07-08
IL66902A (en) 1989-03-31
ES517728A0 (en) 1983-08-16
JPS58127099A (en) 1983-07-28
DE3148264A1 (en) 1983-06-16

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