EP0121494A1 - Panzerbrechender Geschosszünder - Google Patents

Panzerbrechender Geschosszünder Download PDF

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Publication number
EP0121494A1
EP0121494A1 EP84810098A EP84810098A EP0121494A1 EP 0121494 A1 EP0121494 A1 EP 0121494A1 EP 84810098 A EP84810098 A EP 84810098A EP 84810098 A EP84810098 A EP 84810098A EP 0121494 A1 EP0121494 A1 EP 0121494A1
Authority
EP
European Patent Office
Prior art keywords
rocket
primer
moving part
firing
positions
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
EP84810098A
Other languages
English (en)
French (fr)
Other versions
EP0121494B1 (de
Inventor
Jean-Pierre Golay
Denis Jaunin
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.)
Mefina SA
Original Assignee
Mefina SA
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 Mefina SA filed Critical Mefina SA
Priority to AT84810098T priority Critical patent/ATE27488T1/de
Publication of EP0121494A1 publication Critical patent/EP0121494A1/de
Application granted granted Critical
Publication of EP0121494B1 publication Critical patent/EP0121494B1/de
Expired 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
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/14—Double fuzes; Multiple fuzes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/02—Electric fuzes with piezo-crystal
    • 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
    • F42C15/18—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved
    • F42C15/188—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved using a rotatable carrier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/02—Fuze bodies; Fuze housings
    • 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

Definitions

  • a projectile When it is desired that a projectile is capable of destroying a target made of hard material, for example a concrete fort or an armored vehicle, it must be provided with a piercing head capable of penetrating the hard material and protecting the percussion and firing device for the projectile. Indeed, the projectile must be equipped with a rocket producing a delayed firing so that the explosion does not occur until after the penetration of the projectile into the goal. Instant firing would do little damage to an armored goal.
  • Electric firing by a voltage pulse supplied by a piezoelectric generator is known, for example from German patent 25,58,836.
  • the object of the present invention is to improve a rocket of the aforementioned kind and to allow efficient construction, less bulky, lighter and less expensive than known constructions.
  • the subject of the present invention is a rocket with a piercing head for a projectile, comprising an electric firing device and means for delaying firing, this device and these means being placed inside or in back of a perforation piece of material to high resistance, characterized in that it comprises a piezoelectric generator intended to be actuated on impact to supply the electrical firing energy, this generator being disposed in front of the perforation piece and electrically connected to the firing device.
  • the rocket shown comprises an annular part 1, fixed by crimping on a protective part 2 having an external thread 3 making it possible to fix the assembly on the body, not shown, of a projectile.
  • the annular part 1 surrounds an electrical firing device, comprising a striker 5 disposed in a cap 4 and intended to strike a hammer 6, against the action of a spring 7 at the time of impact.
  • the shock produced on the hammer 6 is applied to a piezoelectric element 8, which provides an electrical voltage peak under the effect of the shock.
  • This piezoelectric element rests on the front face of the protective part 2, which constitutes an anvil and at the same time an electrode at ground potential, while the hammer 6 constitutes the other electrode, which is connected via from a contact finger 10 to a step-down transformer 9.
  • the rocket also includes a timer mechanism 11, provided with a counterweight 12, movable at the start of the blow to band a spring.
  • the latter acts as a motor on a clockwork movement contained in the timer 11, a movement which is of known construction and which will therefore not be shown in detail.
  • a movement of this kind is moreover described in Swiss patent application 691 / 80-3.
  • the timer releases a stop member, constituted by a rod 13, sliding along an axis parallel to that of the rocket, this rod 13 being subjected to the action of a return spring 14 ( Figure 2).
  • the rod 13 constitutes a stop member for a movable part 15 in the form of a rotor pivotally mounted on a pin 16 and a pivot 17.
  • the pin 16 is secured to a spiral spring 18, the outer end of which is fixed to a bearing 19 of the rod 13, this bearing being carried by a disc 20.
  • This spring 18 biases the rotor 15 in a clockwise direction and this is retained in its rotation by the stop rod 13, which cooperates with a shoulder 21, provided on the periphery of the rotor to block it in the safety position.
  • the shoulder 21 is followed by a shoulder 22 which makes it possible to define a first active position of the rotor 15 by abutment against the rod 13. If the rod 13 is sufficiently displaced to release the shoulder 22, the rotor can turn further to reach a second active position.
  • the rotor 15 contains two electrical primers, only one of which is visible in FIGS. 1 and 2. These primers have different characteristics, one being intended for instantaneous firing and the other for delayed firing of the projectile. .
  • a pyrotechnic chain 25, 26, intended to communicate the firing of the explosive charge of the projectile.
  • the component 25 of the pyrotechnic chain is separated from the rotor 15 by a metal disc 27 and is located opposite an orifice 28, formed in this disc.
  • the contact for supplying tension to the primer 24 is constituted by a rod 29, subjected to the action of a spring 30 and cooperating with a contact blade 31 which touches the finger 32 for supplying tension to the primer 24.
  • the contact rod 30 is pressed against the disc 20 which is at ground potential, so that the ignition terminals of the primer 24 are short-circuited, which makes the device completely neutral with respect to induced voltages, for example by electromagnetic devices.
  • no primer is located opposite the hole 28, since it is the safety position.
  • the arrangement is the same for the other primer, which is not shown and which also has an elastic contact rod.
  • the stop rod 13 has moved upwards and the rotor 15 has rotated under the action of the spring 18 to bring the primer 24 opposite the hole 28.
  • the contact rod 29 has slipped under the disc 20 until it is opposite an opening 23 of the disc 20 which it crosses under the action of the spring 30 to come into contact with a current supply formed by a conductor 33, the latter is connected to the step-down transformer 9.
  • the voltage produced by the piezoelectric element is applied to the primer 24 passing through the finger 10, the transformer 9 , the conductor 33, the rod 29 and the blade 31.
  • the control of the selection of one or the other of the primers is carried out by acting on a rotary member 34 having a slotted head 35.
  • This member has an end 36 intended to limit the stroke of the stop rod 13. In the position illustrated in FIG. 3, the end 36 prevents any displacement of the rod 13 upwards, making it possible to release the shoulder 21 of the rotor 15. If the member 34 is rotated by half a turn, as illustrated in FIGS. Figures 1 and 2, the part 13 can slide to release the shoulder 21 and constitute a stop for the shoulder 22 to define a first stop position of the rotor 15. When the member 34 is only turned one quarter-turn, the end 36 is outside the path of the rod 13, so that its lower end is placed higher than the shoulder 22. The rotor 15 can then rotate until the contact rod 29 abuts against the end of a slot 38 extending the opening 23. In this position the contact rod of the other primer crosses the opening 23 after sliding under the disk 20.
  • the end 36 has a housing 39 opposite the rod 13, in which this rod would be housed in the event that it is accidentally released, so as to prevent any rotation of the member 34 and prohibit armament of the rocket.
  • the member 34 is of course placed in its selection position before the start of the shot, so that after the launch of the projectile and after the delay given by the timer mechanism 11, the rod 13 moves upwards, under the action of the spring 14 and occupies, according to the preselection, a stop or release position for the shoulder 22 of the rotor 15.
  • the other primer is short-circuited by its rod 29 which is either pressed against the plate 20, or in contact with this plate at the end of the slot 38.
  • the striker 5 and the hammer 6 act on the piezoelectric element to produce an ignition voltage which is transmitted almost instantaneously to the primer which has been selected.
  • the generator is then dislocated by the impact shock, but the firing device is protected by the shielding piece 2 while the latter acts as a piercing head when entering the goal. Firing then occurs normally.
  • the shielding part 2 no longer has a protective role to play, but it makes it possible to use only one model of projectile which is also suitable. both for instant ignition and for delayed ignition after penetration into a hard material.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Toys (AREA)
  • Laminated Bodies (AREA)
  • Fireproofing Substances (AREA)
  • Air Bags (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Drilling And Boring (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Soft Magnetic Materials (AREA)
  • Fuses (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Electric Clocks (AREA)
  • Stringed Musical Instruments (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
EP84810098A 1983-03-07 1984-02-28 Panzerbrechender Geschosszünder Expired EP0121494B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84810098T ATE27488T1 (de) 1983-03-07 1984-02-28 Panzerbrechender geschosszuender.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1218/83 1983-03-07
CH1218/83A CH650330A5 (fr) 1983-03-07 1983-03-07 Fusee a tete perforante pour projectile.

Publications (2)

Publication Number Publication Date
EP0121494A1 true EP0121494A1 (de) 1984-10-10
EP0121494B1 EP0121494B1 (de) 1987-05-27

Family

ID=4205254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84810098A Expired EP0121494B1 (de) 1983-03-07 1984-02-28 Panzerbrechender Geschosszünder

Country Status (9)

Country Link
US (1) US4606271A (de)
EP (1) EP0121494B1 (de)
AT (1) ATE27488T1 (de)
CA (1) CA1245506A (de)
CH (1) CH650330A5 (de)
DE (1) DE3463971D1 (de)
ES (1) ES8503220A1 (de)
FI (1) FI77730C (de)
NO (1) NO163076C (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550331A1 (fr) * 1983-08-05 1985-02-08 Diehl Gmbh & Co Dispositif de securite pour fusees detonatrices agissant au moment de l'impact au sol, place dans une munition a disperser
US4723087A (en) * 1985-09-09 1988-02-02 Raychem Ltd. Piezoelectric impact sensor
EP0709646A1 (de) * 1994-10-26 1996-05-01 Tda Armements S.A.S. Aufschlagzünder mit doppelter Sicherheit
GB2332733A (en) * 1988-10-05 1999-06-30 Diehl Gmbh & Co Warhead triggering mechanism with a time delay after impact

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH664010A5 (fr) * 1985-07-12 1988-01-29 Mefina Sa Fusee pour projectile.
DK1597534T3 (da) 2003-02-27 2008-02-11 Sn Technologies S A Raket til projektil

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485887A (en) * 1944-04-06 1949-10-25 Us Navy Projectile
LU60039A1 (de) * 1968-12-19 1970-03-18
DE2206646A1 (de) * 1971-02-11 1972-08-24 Societe E. Lacroix, Muret (Frankreich) Zündanordnung
FR2126571A5 (de) * 1971-02-11 1972-10-06 Lacroix
DE2312793A1 (de) * 1973-03-15 1974-09-19 Dynamit Nobel Ag Piezoelektrischer zuender, insbesondere fuer geschosse
FR2219396A1 (de) * 1973-02-23 1974-09-20 Messerschmitt Boelkow Blohm
DE2533585A1 (de) * 1975-07-26 1977-02-10 Messerschmitt Boelkow Blohm Gefechtskopf zur bekaempfung von raeumlichen zielen, insbesondere schiffen
EP0098640A1 (de) * 1982-06-29 1984-01-18 Mefina S.A. Geschoss-Zündvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2129692A (en) * 1937-10-01 1938-09-13 Edwin J Hottinger Fuse
US2789508A (en) * 1953-02-18 1957-04-23 Rove Gene Safety and arming mechanism
NL267256A (de) * 1960-07-21
US3967556A (en) * 1975-03-31 1976-07-06 The United States Of America As Represented By The Secretary Of The Army Pneumatic fuze for safing and arming missiles

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485887A (en) * 1944-04-06 1949-10-25 Us Navy Projectile
LU60039A1 (de) * 1968-12-19 1970-03-18
DE2206646A1 (de) * 1971-02-11 1972-08-24 Societe E. Lacroix, Muret (Frankreich) Zündanordnung
FR2126571A5 (de) * 1971-02-11 1972-10-06 Lacroix
FR2219396A1 (de) * 1973-02-23 1974-09-20 Messerschmitt Boelkow Blohm
DE2312793A1 (de) * 1973-03-15 1974-09-19 Dynamit Nobel Ag Piezoelektrischer zuender, insbesondere fuer geschosse
DE2533585A1 (de) * 1975-07-26 1977-02-10 Messerschmitt Boelkow Blohm Gefechtskopf zur bekaempfung von raeumlichen zielen, insbesondere schiffen
EP0098640A1 (de) * 1982-06-29 1984-01-18 Mefina S.A. Geschoss-Zündvorrichtung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550331A1 (fr) * 1983-08-05 1985-02-08 Diehl Gmbh & Co Dispositif de securite pour fusees detonatrices agissant au moment de l'impact au sol, place dans une munition a disperser
US4723087A (en) * 1985-09-09 1988-02-02 Raychem Ltd. Piezoelectric impact sensor
GB2332733A (en) * 1988-10-05 1999-06-30 Diehl Gmbh & Co Warhead triggering mechanism with a time delay after impact
GB2332733B (en) * 1988-10-05 1999-10-20 Diehl Gmbh & Co An anti-shelter projectile-warhead triggering mechanism for detonating an anti-shelter projectile
US6053109A (en) * 1988-10-05 2000-04-25 Diehl Stiftung & Co. Triggering arrangement for the priming of an anti-shelter projectile
EP0709646A1 (de) * 1994-10-26 1996-05-01 Tda Armements S.A.S. Aufschlagzünder mit doppelter Sicherheit
FR2726359A1 (fr) * 1994-10-26 1996-05-03 Thomson Brandt Armements Fusee d'impact a double securite

Also Published As

Publication number Publication date
EP0121494B1 (de) 1987-05-27
DE3463971D1 (en) 1987-07-02
NO163076C (no) 1990-03-28
CH650330A5 (fr) 1985-07-15
NO163076B (no) 1989-12-18
FI77730B (fi) 1988-12-30
ATE27488T1 (de) 1987-06-15
ES530305A0 (es) 1985-02-16
NO840817L (no) 1984-09-10
CA1245506A (fr) 1988-11-29
US4606271A (en) 1986-08-19
ES8503220A1 (es) 1985-02-16
FI840894A0 (fi) 1984-03-06
FI77730C (fi) 1989-04-10
FI840894A (fi) 1984-09-08

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