Detonator

Detonator
top: small nonel detonator with 25ms delay for chaining nonel tubes, middle: class B SPD detonator, bottom: class C SPD detonator
Inserting detonators into blocks of C-4 explosive

A detonator is a device used to trigger an explosive device. Detonators can be chemically, mechanically, or electrically initiated, the latter two being the most common.

The commercial use of explosives uses electrical detonators or the capped fuse which is a length of safety fuse to which an ordinary detonator has been crimped. Many detonators' primary explosive is a material called ASA compound. This compound is formed from lead azide, lead styphnate and aluminium and is pressed into place above the base charge, usually TNT or tetryl in military detonators and PETN in commercial detonators.

Other materials such as DDNP (diazo dinitro phenol) are also used as the primary charge to reduce the amount of lead emitted into the atmosphere by mining and quarrying operations. Old detonators used mercury fulminate as the primary, and it was often mixed with potassium chlorate to yield better performance.

Contents

Electrical detonators

There are three categories of electrical detonators: instantaneous electrical detonators (IED), short period delay detonators (SPD) and long period delay detonators (LPD). SPDs are measured in milliseconds and LPDs are measured in seconds.

In situations where nanosecond accuracy is required, specifically in the implosion charges in nuclear weapons, exploding-bridgewire detonators are employed. The initial shock wave is created by vaporizing a length of a thin wire by an electric discharge.

A new development is a slapper detonator, which uses thin plates accelerated by an electrically exploded wire or foil to deliver the initial shock. It is in use in some modern weapon systems. A variant of this concept is used in mining operations, when the foil is exploded by a laser pulse delivered to the foil by optical fiber.

Electronic detonators

In civil mining, electronic detonators (Daveytronic) have a better precision for delays.

Non-electric detonators

Non-electric detonators usually take the form of an ignition-based explosive. Whilst they are mainly used in commercial operations, non-electric detonators are still used in military operations. This form of detonator is most commonly initiated using safety fuse, and used in non time-critical detonations i.e. Conventional Munitions Disposal

Fictional variations

  • Ion detonator, in the video game Destroy All Humans!
  • Mk2 detonator, in the video game GoldenEye: Rogue Agent
  • Thermal detonator, in the film series Star Wars

See also


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Look at other dictionaries:

  • Detonator (EP) — Detonator EP by Fearscape Released 2004 …   Wikipedia

  • detonator — DETONATÓR, detonatoare, s.n. Element, dispozitiv etc. care (poate) produce detonaţia unei substanţe explozive. – Din fr. détonateur. Trimis de RACAI, 13.09.2007. Sursa: DEX 98  detonatór s. n., pl. detonatoáre Trimis de siveco, 10.08.2004. Sursa …   Dicționar Român

  • Detonator — Det o*na tor (d[e^]t [ o]*n[=a] t[ e]r), n. One that detonates; specif.: (a) An explosive whose action is practically instantaneous. (b) Something used to detonate a charge, as a detonating fuse. (c) A case containing detonating powder, the… …   The Collaborative International Dictionary of English

  • Detonātor — (Zündpatrone), in der Sprengtechnik das zur Herbeiführung der Explosion von Nitropräparaten dienende Zwischenmittel (s. Explosivstoffe) …   Meyers Großes Konversations-Lexikon

  • Detonator — Detonator, s. Initialzündungen …   Lexikon der gesamten Technik

  • Detonator — Detonātor (lat.), Zündpatrone, leicht explosibler Sprengstoff als Zündmittel für hochexplosible Sprengstoffe …   Kleines Konversations-Lexikon

  • detonator — index bomb Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • detònātor — m upaljač ili udarna igla za paljenje eksploziva …   Veliki rječnik hrvatskoga jezika

  • detonator — 1822, agent noun in Latin form from DETONATE (Cf. detonate). For suffix, see ER (Cf. er) (1) …   Etymology dictionary

  • detonator — detònātor m DEFINICIJA upaljač ili udarna igla za paljenje eksploziva ETIMOLOGIJA vidi detonacija …   Hrvatski jezični portal

  • detonator — {{/stl 13}}{{stl 8}}rz. mnż I, D. a, Mc. detonatororze {{/stl 8}}{{stl 7}} ładunek materiału wybuchowego przenoszący detonację inicjującego materiału wybuchowego (spłonki) na zasadniczy materiał kruszący <fr. z łac.> {{/stl 7}} …   Langenscheidt Polski wyjaśnień

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