How does an exploding foil initiator work

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August undefined, 2024

WebApr 30, 2024 · Analytical and numerical models, validated against published data, were developed to calculate the velocity and time of arrival duration (ToAD) of the flyer-plasma material at the top of the barrel of an exploding foil initiator (EFI), as commonly used in explosive devices. WebDuring initiation, the wire heats with the passing current until melting point is reached. The heating rate is high enough that the liquid metal has no time to flow away, and heats …

High fidelity studies of exploding foil initiator bridges, Part 2 ...

WebLEEFI = Low Energy Exploding Foil Initiator (EFI) Packaged in a convenient TO-5 can with orientation tab. Inherently safer than hotwire detonators. Qualified to MIL-DTL-23659, … list of all us holidays 2023

EXPLODING FOIL INITIATOR - PacSci EMC

WebJan 1, 2024 · Under the action of a high pulse current, the explosive metal foil completes the transformation of solid, liquid, gas and plasma in a very short time, forming a high … WebMar 9, 2024 · The exploding foil initiator provides a new method of multi-point detonation control. It transmits signals through the circuit without requiring complicated safety components and has the advantages of safety, reliability, small size, and promptness, which make it especially suitable for multi-point initiation control when applied to a warhead. WebThe activity began with funding Exploding Foil Initiator (EFI) technology in conjunction with RARDE (now QinetiQ and Dstl). This built on the existing high speed switch tube technology already developed at Teledyne e2v. Through the late 1980s and early 1990s, work was concentrated on EFI initiator research and characterisation, explosive images of low profile microwave in kitchen

SCCM 13 Comp B Paper - Institute of Physics

WebProperties of Exploding Foil Flyer ... Yao Wang et al-X-ray imaging and 3D reconstruction of in-flight exploding foil initiator flyers T. M. Willey et al-This content was downloaded from IP address 207.46.13.18 on 02/05/2024 at 22:53. ... of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI WebApr 1, 2015 · Exploding foil initiators (EFIs) are highly suitable for use in inline fuze trains containing only secondary high explosives, mainly due to their insensitivity with respect to electromagnetic disturbances or mechanical stress, their precisely controllable fire characteristics and compact size. During EFI operation various multi-physical phenomena … list of all us gamecube gamesWebThe 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 … images of lowlights in gray hair

"WebAug 17, 2024 · Exploding foil initiator is a kind of electric explosive device and the primary energy source of weapon system. Importantly, the reliability for the whole weapo Study on … " - How does an exploding foil initiator work

How does an exploding foil initiator work

A narrowed section of the metal then explosively vaporizes when a current pulse passes through it, which shears the mylar foil and the plasma ball pushes it through the hole, accelerating it to very high speed. The impact then detonates the explosive pellet. Diagram of slapper and EBW detonators initiating detonation. See more A slapper detonator, also called exploding foil initiator (EFI), is a detonator developed by Lawrence Livermore National Laboratory, US Patent No. 4,788,913 (Filed 1971, Granted 1988). It is an improvement over the earlier See more • Nuclear weapon design • Triggering sequence See more • Elements of Fission Weapon Design, section 4.1.6.2.2.6 • Modelling and Simulation of Burst Phenomenon in Electrically Exploded Foils See more WebThe term “initiator” defines a fairly broad group of devices that are intended to trigger an energetic material, be it an explosive, propellant, or pyrotechnic. They are the first portion …

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WebExploding foil initiators ( EFI ). Technical Notes: 1. The word initiator or igniter is sometimes used in place of the word detonator. 2. For the purpose of 1A007.b. the detonators of concern all utilise a small electrical conductor (bridge, bridge wire, or foil) that explosively vaporises when a fast, high‑current electrical pulse is passed ... WebLaunch > Vehicle component > Exploding Foil Initiator Summary AN EXPLODING FOIL INITIATOR (EFI), ALSO KNOWN AS SLAPPER DETONATOR, IS USED TO PROVIDE …

WebJul 14, 2013 · Increasing insensitivity demands on initiation trains in missile systems necessitates utilizing high voltage initiators. Exploding Foil Initiator (EFI), also known as Slapper Detonator, is the well–known high voltage detonator that can only be initiated under the action of large electrical currents. EFI is strictly immune to Electrostatic Discharge … WebOur Exploding Bridge Wire (EBW) contains a lead-free explosive (CLCP) functioned with an ECOSSE PX-1 Firing Set and initiate secondary booster detonation in wireline guns. Exploding bridge wires (EBW) detonators have a small …

WebJan 7, 2010 · Exploding Foil Initiators (EFIs) provide a safe and reliable means of initiating explosives. They are highly insensitive to mechanical shock and electrical interference, requiring a specific high current pulse for initiation. This allows the use of insensitive secondary explosives, eliminating more sensitive primary explosives. WebExploding Foil Initiator Development David Pray John Sparkman Al Starner Roy Streetz Energetic Components Engineer (937) 865-3011 [email protected] Mechanical Engineering Leader (937) 353-2265 [email protected] Product Line Director (937) 865-3544 [email protected] ...

WebSep 12, 2024 · The two requirements are achieved by using what we call an exploding foil initiator (EFI). And the EFI is the fundamental enabling technology for the high voltage, …

WebJun 1, 2024 · Conventional exploding foil initiator (EFI) in ignition or detonation applications hosts many performance advantages, but was hindered by the bulky, inaccurate, inefficient and expensive... images of low maintenance front yardsWebJan 1, 2024 · Under the action of a high pulse current, the explosive metal foil completes the transformation of solid, liquid, gas and plasma in a very short time, forming a high-temperature and high-pressure... images of l shaped kitchen designWebThe exploding foil itself consists of a narrowing in the copper transmission line. The current will mainly heat this part of the foil. When a critical current and current rise time is exceeded, the foil will turn into a plasma. The plasma pressure and the Lorentz forces of the current will accelerate the flyer through the barrel. images of lucifer hummingbirdWebESADs use an Exploding Foil Initiator (EFI), a key enabling technology for the detonator used in the nuclear weapons programs for decades. On the conventional weapons front, a Low-Energy EFI (LEEFI) has been the only approved technology for ESADs since the mid-1990s. list of all usfl teamsWebApr 30, 2024 · Analytical and numerical models, validated against published data, were developed to calculate the velocity and time of arrival duration (ToAD) of the flyer-plasma … list of all usmc generalsWebAn exploding foil initiator (EFI), also known as Slapper Detonator, are uses to initiate insensitive explosive materials usually in the first stage of an explosive chain, it is a short-pulse electric signal device and contains no primary explosive. It is used to images of low maintenance landscapingWebTo make the specification consistent with the EFI technology and 1316 safety requirements, the proposed changes require statistical analysis testing at temperature extremes, … list of all us holidays 2017