US3651760A - Ignition system for warhead - Google Patents

Ignition system for warhead Download PDF

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Publication number
US3651760A
US3651760A US865888A US3651760DA US3651760A US 3651760 A US3651760 A US 3651760A US 865888 A US865888 A US 865888A US 3651760D A US3651760D A US 3651760DA US 3651760 A US3651760 A US 3651760A
Authority
US
United States
Prior art keywords
warhead
rod
ignition
cross
sectional planes
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 - Lifetime
Application number
US865888A
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English (en)
Inventor
Manfred Held
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm 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
Priority claimed from DE19681805467 external-priority patent/DE1805467C/de
Application filed by Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Application granted granted Critical
Publication of US3651760A publication Critical patent/US3651760A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F42C19/00—Details of fuzes
    • F42C19/06—Electric contact parts specially adapted for use with electric fuzes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/04—Electric fuzes with current induction
    • 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
    • F42C15/184—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 slidable carrier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/06—Relative timing of multiple charges
    • 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
    • Y10S102/701—Charge wave forming

Definitions

  • An ignition system for the simultaneous ignition of several [21 i PP 865,888 charges arranged in different cross-sectional planes of an elongated warhead and extending perpendicular to the longitudinal center line of the warhead, includes a rod displuccublc [30] Forum] Application Priority Dam along the longitudinal center line. relative to thc cross-scc- Oct. 16, 1968 Germany ..P 18 05 467.6 tional planes, and hnving two possible positions space d loni 7' V gitudinally from each other.
  • the rod has. at locations 52 11.5. c1. ..102/70.2 A, 102/2115 therealons. and in cross-scctional planes corresponding to the 15 1 1111.
  • a proposed warhead has hollow charges distributed in different cross-sectional planes of the warhead, substantially uniformly over the circumference of the warhead. Thereby there is achieved a fragmenting effect distributed substantially uniformly in all directions, during the simultaneous ignition of all the charges inside a warhead, with the high piercing effect caused by the hollow charges.
  • An important problem of these warheads is the accurate simultaneous ignition of all the charges.
  • This invention relates to an ignition system for the simultaneous ignition of several charges arranged in different crosssectional planes of an elongated warhead, the planes extending perpendicularly to the longitudinal axis. More particularly, the invention relates to a simplified ignition system in which a principal element has an ignition locked position and an ignition released position.
  • the objective of the invention is to provide an ignition system for the simultaneous ignition of such warheads, and which is simple in design, safe in operation, and offers the simple possibility of locking the ignition system before use of the warhead and of unlocking it when the warhead is used.
  • a rod is provided which may be displaced along the longitudinal axis of the warhead relative to the cross-sectional planes, the rod being displaceable between two possible positions.
  • This rod has devices, in corresponding cross-sectional planes, effecting the ignition of the charges.
  • the crosssectional planes of the warhead coincide with the corresponding cross-sectional planes of the rod in only one of the two possible positions of the rod.
  • the devices arranged in the rod are electric detonators all of which detonate simultaneously at the time of the ignition. These electric detonators prime pyrotechnically, with the ignition system released, the charges of the warhead arranged in the same cross-sectional planes, and hence directly adjoining the detonators.
  • the electric elements necessary for transmitting electric ignition energy are so arranged in the rod that a transmission of the ignition energy, by means of inductive coupling of windings in the rod and windings in the surrounding warhead, is possible only in the released position of the rod with respect to the warhead.
  • This arrangement has the effect, on the one hand, that the electric detonators in the rod are connected with each other and also with the necessary electric elements through optimum short lines, so that only minimum line inductances occur.
  • an additional electric locking of the ignition system is effected in the locked position ofthe rod.
  • embodiments of the warhead can also have the electric detonators arranged stationary next to the charges ofthe warhead, and only the electric elements, for example, the transformer windings, are displaced by means of the rod with respect to the warhead from a locked position into an unlocked position.
  • An object of the invention is to provide an improved ignition system for the simultaneous ignition of all of the charges ofan elongated warhead.
  • Another object of the invention is to provide such an ignition system which is simple in design, safe in operation, and provides for locking of the ignition system before use of the warhead and unlocking the ignition system when the warhead is used.
  • a further object of the invention is to provide such an ignition system including a rod movable between two positions, and carrying devices for effecting ignition of the charges in the warhead.
  • Another object of the invention is to provide such an ignition system in which ignition can be effected only in one of two possible positions of the rod and the ignition system is locked in the other of the two possible positions of the rod.
  • FIGS. 1 and 2 are longitudinal sectional views of a warhead having an ignition system including electric detonators arranged i'n'the rod;
  • I I 7' FIGS. 3, 4 and 5 are longitudinal sectional views illustrating different arrangements of the detonators in the rod;
  • FIG. 6 is a longitudinal sectional view illustrating a different design of the warhead surrounding the rod.
  • FIGS. 7 and 8 are schematic wiring diagrams illustrating an embodiment of the invention including electric elements arranged in the rod.
  • FIGS. 1 and 2 illustrate, diagrammatically, the inner part of the warhead which is not represented therein in full detail.
  • the warhead consists, substantially, of the explosive material 10 and of coverings, which have not been shown, arranged on its surface in different planes or zones.
  • a rod 1 extends along the longitudinal axis or center line of the warhead and carries electric detonators 2 in different cross-sectional planes. Only two of these detonators have been illustrated, for the sake of simplicity, and these are connected, in a manner not specifically illustrated, with an ignition circuit over an electric line 200.
  • the particular ignition circuit, supplying the ignition energy, has not been illustrated as these are known to the art.
  • Electric detonators 2 are covered with a shock-wave absorbing material 3.
  • Rod 1 is surrounded by a sleeve 5 forming part of the warhead, and sleeve 5 consists substantially of a shock-wave absorbing material 4 which is interrupted in the different cross-sectional planes of the warhead by transmission charges 6 which thus adjoin directly the explosive charge proper 10 of the warhead.
  • the ignition system embodying the invention is illustrated in its locked position, in which rod 1 is in one of its two possible positions with respect to the warhead.
  • electric detonators 2 are displaced longitudinally relative to the transmission charges 6, by a sufficient longitudinal spacing. If, due to an unforeseen incident, electric detonators 2 should be released in this locked position of rod 2, the warhead itself cannot be detonated because the shockwaves, originating from the electric detonators 2, are absorbed by the absorbent material 3 directly surrounding the electric detonators 2 and by the additional absorbent material 4 of sleeve 5, adjoining material 3 in such locked position. Thus the detonators cannot prime the transmission charges 6 so that explosive charge 10 of the warhead cannot be ignited.
  • detonators 2 develop only a relatively weak shock-wave upon release, the absorbent material 3 surrounding the detonators must be replaced by a reinforcing charge 7 inside rod 1, as shown in FIG. 3, so that a satisfactory priming of transmission charges 6 adjoining, in the respective cross-sectional planes, is insured.
  • Reinforcing charge 7 also can be arranged, if desired, in the manner shown in FIG. 4 and directly behind the electric detonators 2 inside rod 1.
  • a flame detonator 9 must be associated with the respective electric detonators. These flame detonators transmit the weak energy, given off by ignition element 8, to reinforcing charges 7.
  • the diameter of sleeve 5 can be made correspondingly greater, so that greater safety thicknesses are possible at the same time for the absorbent material 4 without the entire weight of the explosive charge of the warhead being reduced in an undesirable manner.
  • FIGS. 7 and 8 show an ignition circuit arranged in rod 1 and comprising a charging condenser 21, an overvoltage arrester and electric detonators 2.
  • the charging voltage required for the condenser is supplied to the ignition circuit from a voltage source, which has not been shown, by inductance and through transformers, whose primary windings 22c and 22d are arranged in the ignition circuit proper in rod 1.
  • the transformer windings between rod 1 and sleeve 5 of the warhead are divided into two oppositely wound parts 22a and 22b, and 22c and 22d, respectively, so that an alternating feed, superposed on the entire rod, cannot result in the appearance of a voltage at the output of windings 22a and 22b.
  • Windings 22a and 22b are arranged at such a spacing from each other that they are surrounded, in the position of rod 1 represented in FIG. 7, by electrically conductive shields 23a and 23b. These shields may comprise, for example, copper or mu-metal bands. If rod 1 is now moved into the unlocked position shown in FIG. 8, windings 22a and 22b of rod 1 and windings 22c and 22d of the warhead are in the same crosssectional planes, and voltage can be transmitted to the ignition circuit arranged in rod 1. The ignition pulse for the response ofthe overvoltage arrester 25 is transmitted through the medium of second transformer coils composed, in a similar manner, of four parts 24a, 24b, 24c and 24d.
  • condenser 211 is discharged through diode 28 and the series-connected electric detonators 2 with a very steep current rise, thus releasing detonators 2.
  • An ignition system for the simultaneous ignition of several charges arranged in respective different longitudinally spaced cross-sectional planes of an elongated warhead and extending perpendicular to the longitudinal center line of the warhead, said ignition system comprising, in combination, a rod of combustible material displaceable along the longitudinal center line of the warhead, relative to said cross-sectional planes, and having two possible positions; aid rod having, at locations therealong, in cross-sectional planes corresponding to said cross-sectional planes of said warhead, devices operable to ignite said charges; the corresponding cross-sectional planes of said warhead and said rod coinciding in one of said two possible positions ofsaid rod.
  • An ignition system as claimed in claim 1, in which said devices are electric elements operable to transmit electric ignition energy.
  • An ignition system for the simultaneous ignition of several charges arranged in respective different cross-sectional planes of an elongated warhead and extending perpendicular to the longitudinal center line of the warhead, said ignition system comprising, in combination, a rod of combusti ble material displaceable along the longitudinal center line of the warhead, relative to said cross-sectional planes, and having two possible positions; said rod having, at locations therealong, in cross-sectional planes corresponding to said cross-sectional planes of said warhead, devices operable to ignite said charges; the corresponding cross-sectional planes of said warhead and said rod coinciding in one of said two possible positions of said rod; said devices being transformer coils operable to supply ignition energy to an ignition circuit arranged in said rod.
  • An ignition system including transmission charges arranged in said cross-sectional planes of said warhead; said warhead including a main explosive charge; and an absorbent material adjacent said main explosive charge in regions between said transmission charges 6.
  • ignition system including an absorbent material surrounding said electric detonators in said rod.
  • An ignition system as claimed in claim 2, including reinforcing charges in said rod adjacent said electric detonators.
  • An ignition system as claimed in claim 2, including flame detonators each operatively associated with an electric detonator.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
US865888A 1968-10-26 1969-10-13 Ignition system for warhead Expired - Lifetime US3651760A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681805467 DE1805467C (de) 1968-10-26 Zündvorrichtung zur gleichzeitigen Zündung mehrerer Ladungen

Publications (1)

Publication Number Publication Date
US3651760A true US3651760A (en) 1972-03-28

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ID=5711663

Family Applications (1)

Application Number Title Priority Date Filing Date
US865888A Expired - Lifetime US3651760A (en) 1968-10-26 1969-10-13 Ignition system for warhead

Country Status (3)

Country Link
US (1) US3651760A (enrdf_load_stackoverflow)
FR (1) FR2022315A1 (enrdf_load_stackoverflow)
GB (1) GB1288956A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4227461A (en) * 1978-09-08 1980-10-14 The United States Of America As Represented By The Secretary Of The Navy Dual output simultaneous firing circuit
US4289072A (en) * 1979-12-13 1981-09-15 Thomas A. Edgell Earth fracturing apparatus
US4655139A (en) * 1984-09-28 1987-04-07 The Boeing Company Selectable deployment mode fragment warhead
US4658727A (en) * 1984-09-28 1987-04-21 The Boeing Company Selectable initiation-point fragment warhead
US4662281A (en) * 1984-09-28 1987-05-05 The Boeing Company Low velocity disc pattern fragment warhead
US4823701A (en) * 1984-09-28 1989-04-25 The Boeing Company Multi-point warhead initiation system
FR2839146A1 (fr) * 2002-04-29 2003-10-31 Francesco Ambrico Dispositif pyrotechnique de retard
US20040004524A1 (en) * 2000-09-15 2004-01-08 Mayfield Glenn A Reduction of capacitance effects in potential transformers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915013A (en) * 1957-01-22 1959-12-01 Acf Ind Inc Arming device
US3094932A (en) * 1960-07-15 1963-06-25 William D Greenlees Electromagnetic radiation proof igniting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915013A (en) * 1957-01-22 1959-12-01 Acf Ind Inc Arming device
US3094932A (en) * 1960-07-15 1963-06-25 William D Greenlees Electromagnetic radiation proof igniting device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4227461A (en) * 1978-09-08 1980-10-14 The United States Of America As Represented By The Secretary Of The Navy Dual output simultaneous firing circuit
US4289072A (en) * 1979-12-13 1981-09-15 Thomas A. Edgell Earth fracturing apparatus
US4655139A (en) * 1984-09-28 1987-04-07 The Boeing Company Selectable deployment mode fragment warhead
US4658727A (en) * 1984-09-28 1987-04-21 The Boeing Company Selectable initiation-point fragment warhead
US4662281A (en) * 1984-09-28 1987-05-05 The Boeing Company Low velocity disc pattern fragment warhead
US4823701A (en) * 1984-09-28 1989-04-25 The Boeing Company Multi-point warhead initiation system
US6963262B2 (en) * 2000-09-15 2005-11-08 Radian Research, Inc. Reduction of capacitance effects in potential transformers
US20040004524A1 (en) * 2000-09-15 2004-01-08 Mayfield Glenn A Reduction of capacitance effects in potential transformers
WO2003095934A1 (fr) * 2002-04-29 2003-11-20 Francesco Ambrico Dispositif pyrotechnique de retard
FR2839146A1 (fr) * 2002-04-29 2003-10-31 Francesco Ambrico Dispositif pyrotechnique de retard
US20060150856A1 (en) * 2002-04-29 2006-07-13 Francesco Ambrico Pyrotechnic device with ignition delay
CN100535579C (zh) * 2002-04-29 2009-09-02 弗朗切斯科·安布里科 具有点火延迟装置的烟火装置
US7634965B2 (en) 2002-04-29 2009-12-22 Francesco Ambrico Pyrotechnic device with ignition delay

Also Published As

Publication number Publication date
FR2022315A1 (enrdf_load_stackoverflow) 1970-07-31
GB1288956A (enrdf_load_stackoverflow) 1972-09-13
DE1805467A1 (de) 1970-05-06

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