EP0110025A1 - Dispositif de sécurité pour projectile - Google Patents

Dispositif de sécurité pour projectile Download PDF

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Publication number
EP0110025A1
EP0110025A1 EP83108695A EP83108695A EP0110025A1 EP 0110025 A1 EP0110025 A1 EP 0110025A1 EP 83108695 A EP83108695 A EP 83108695A EP 83108695 A EP83108695 A EP 83108695A EP 0110025 A1 EP0110025 A1 EP 0110025A1
Authority
EP
European Patent Office
Prior art keywords
projectile
liner
booster
thermal barrier
kapton
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Withdrawn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
EP83108695A
Other languages
German (de)
English (en)
Inventor
Gerald E. Jensen
Norman M. Jordan
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 EP0110025A1 publication Critical patent/EP0110025A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/34—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by a blocking-member in the pyrotechnic or explosive train between primer and main charge

Definitions

  • the present invention relates to a projectile according to the preamble of claim 1.
  • Well known munitions rounds comprise a cartridge case, of an appropriate caliber for insertion into the breach of a gun having rifling lands and a projectile attached to the cartridge case and including a forward fuze and a rearward body bearing a "rotating ring" and containing a charge of high explosives surrounding a liner having a booster charge to be fired by a lead explosive in the fuze.
  • the present invention takes into account that at the moment of firing there is a possibility of hot propellant gasses from the cartridge case leaking between the fuze and body of the projectile to ignite the booster charge, and provides a thermal barrier be positioned in the retainer of the booster charge in such a way as to prevent such propellant gasses from reaching the booster, without disabling the more direct and powerful ignition effect of lead explosion by operation of the fuze.
  • the single figure of the drawing is a somewhat schematic view in longitudinal section of a munition round of the type under discussion, ready to be fired from a gun.
  • FIGURE 1 shows a munition round 10 in the barrel 11 of a gun.
  • Round 10 comprises a cartridge case 12 and a projectile 13 interconnected by crimping at a connection 14.
  • Cartridge case 12 includes a charge 15 of propellant and means 16 for firing the charge, which may include a primer 17 and a flash tube 20.
  • Projectile 13 comprises a forward fuze 21 and a rearward body 22, interconnected by a threaded connection 23.
  • Body 22 includes a "rotating ring" 24 and a charge of high explosives 25, which is consolidated around a liner 26 secured in body 22 by a threaded retainer 27.
  • Liner 26 is of generally conical hollow configuration, and tapers outwardly from a rearward neck 30 to a forward rim 31 engaged by retainer 27.
  • a booster charge 32 is consolidated in neck 30 and positioned to be detonated by impact of a high velocity mass impelled rearwardly by discharge of a lead explosive 33 centrally located at the rear of fuze 21.
  • ring 24 The function of ring 24 is to engage spiral lands in barrel 11, partly to cause projectile 13 to spin about its longitudinal axis as it leaves the barrel, and partly to minimize the passage of propellant gasses past the projectile to discharge uselessly at the muzzle of the gun, and upon firing of the piece hot gasses are present around the connection between fuze 21 and body 22.
  • the invention here comprises a thermal barrier 40 positioned in neck 30 between booster 32 and retainer 27.
  • a thermal barrier 40 positioned in neck 30 between booster 32 and retainer 27.
  • punchings of DuPont Kapton so positioned, prevent any momentarily present hot gasses leaking past connection 23 from thermally contacting booster 32 to ignite it: a sufficient thickness of Kapton to serve as a barrier of this sort has been found not to interfere with the impact on the booster of the high velocity mass from lead explosive 33, which can penetrate the barrier and reliably detonate the booster charge.
  • the thermal barrier was made of one layer of Kapton 0,0762 mm thick, inserted into neck 30 in contact with booster 32.
  • the invention comprises means for preventing preignition of the booster charge in high explosive projectiles, by interposing a thermal barrier between the charge and adventitous hot gasses entering the projectile between the fuze and the projectile body.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP83108695A 1982-09-07 1983-09-03 Dispositif de sécurité pour projectile Withdrawn EP0110025A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41510282A 1982-09-07 1982-09-07
US415102 1982-09-07

Publications (1)

Publication Number Publication Date
EP0110025A1 true EP0110025A1 (fr) 1984-06-13

Family

ID=23644395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108695A Withdrawn EP0110025A1 (fr) 1982-09-07 1983-09-03 Dispositif de sécurité pour projectile

Country Status (1)

Country Link
EP (1) EP0110025A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2204823A1 (de) * 1972-02-02 1973-08-16 Diehl Fa Sicherungseinrichtung an sprengwurfkoerpern
FR2334087A1 (fr) * 1975-12-05 1977-07-01 Thomson Brandt Fusee de mise a feu de projectiles, et projectile pourvu d'une telle fusee

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2204823A1 (de) * 1972-02-02 1973-08-16 Diehl Fa Sicherungseinrichtung an sprengwurfkoerpern
FR2334087A1 (fr) * 1975-12-05 1977-07-01 Thomson Brandt Fusee de mise a feu de projectiles, et projectile pourvu d'une telle fusee

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB LI SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850214

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JORDAN, NORMAN M.

Inventor name: JENSEN, GERALD E.