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GB807499A - Improvements in or relating to ignition assemblies - Google Patents

Improvements in or relating to ignition assemblies

Info

Publication number
GB807499A
GB807499A GB26896/57A GB2689657A GB807499A GB 807499 A GB807499 A GB 807499A GB 26896/57 A GB26896/57 A GB 26896/57A GB 2689657 A GB2689657 A GB 2689657A GB 807499 A GB807499 A GB 807499A
Authority
GB
United Kingdom
Prior art keywords
cord
igniter
passage
propellant
detonating
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
GB26896/57A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB807499A publication Critical patent/GB807499A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C9/00—Chemical contact igniters; Chemical lighters
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C5/00—Fuses, e.g. fuse cords
    • C06C5/04—Detonating fuses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/0803—Primers; Detonators characterised by the combination of per se known chemical composition in the priming substance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/0819—Primers or igniters for the initiation of rocket motors, i.e. pyrotechnical aspects thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Woven Fabrics (AREA)

Abstract

807,499. Igniters for rocket motors. DU PONT DE NEMOURS & CO., E. I. Aug. 26, 1957 [Sept. 7, 1956], No. 26896/57. Class 9(1) An igniter for the propellant 2 in a rocket motor 1 comprises a detonating fuze cord 4 embedded in a mass 3 of pyrotechnic material, the cord having a metal sheath surrounding a core of 0.5 to 5 grains per foot of a high velocity detonating explosive. The igniter may be cylindrical, Fig. 1, in which case the cord 4 extends axially through the mass 3 or the igniter may be disc-like, the cord 4 being spirally arranged. An electric blasting cap 5 is attached to one end of the cord 4, the lead wires 6 being taken through the rocket nozzle. Should the propellant 2 have axial passage of circular or starshaped section, a single cylindrical igniter is placed in the passage. If the passage is cross-shaped in section, an igniter of conforming section may be used. If the propellant has no through passage, but has four wedge-shaped cavities in the peripheral curved surface, a cylindrical or wedge-shaped igniter may be placed in each cavity. The igniter of Fig 6 is formed by loading prepressed pellets of an aluminium-potassium perchlorate composition 3 into a container 7 of plasticcoated wire mesh containing a length of detonating cord or a tube 8 of metal, synthetic polymeric film or paper to receive the cord. In addition to the metal sheath, the cord may be covered with a countering of a textile or synthetic polymeric composition. The detonating explosive may be PETN and the sheath may be of lead or ductile metal alloys. For rockets to be fired in sequence, different lengths of cord connecting the rockets to a central initiation source may be used.
GB26896/57A 1956-09-07 1957-08-26 Improvements in or relating to ignition assemblies Expired GB807499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US807499XA 1956-09-07 1956-09-07

Publications (1)

Publication Number Publication Date
GB807499A true GB807499A (en) 1959-01-14

Family

ID=22159363

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26896/57A Expired GB807499A (en) 1956-09-07 1957-08-26 Improvements in or relating to ignition assemblies

Country Status (1)

Country Link
GB (1) GB807499A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3014425A (en) * 1959-06-23 1961-12-26 Norman K Turnbull Peripheral ignition system
US3128600A (en) * 1960-05-18 1964-04-14 Thiokol Chemical Corp Multilevel solid propellant rocket motor
EP0306616A3 (en) * 1987-09-11 1990-07-11 Rheinmetall Gmbh Ignition transmission charge for a propellant charge
EP0480085A1 (en) * 1989-09-29 1992-04-15 Dornier Gmbh Gas generator
EP1364843A1 (en) * 2002-05-21 2003-11-26 TRW Airbag Systems GmbH Gas generator for an airbag

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3014425A (en) * 1959-06-23 1961-12-26 Norman K Turnbull Peripheral ignition system
US3128600A (en) * 1960-05-18 1964-04-14 Thiokol Chemical Corp Multilevel solid propellant rocket motor
EP0306616A3 (en) * 1987-09-11 1990-07-11 Rheinmetall Gmbh Ignition transmission charge for a propellant charge
EP0480085A1 (en) * 1989-09-29 1992-04-15 Dornier Gmbh Gas generator
EP1364843A1 (en) * 2002-05-21 2003-11-26 TRW Airbag Systems GmbH Gas generator for an airbag
US6834594B2 (en) 2002-05-21 2004-12-28 Trw Airbag Systems Gmbh & Co. Kg Tubular gas generator

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