Squib (explosive)

For the firearms malfunction, see squib load.
0.5 and 1 grain bullet hit squibs and solid polycarbonate backing shields to simulate a gunshot wound on an actor. A blood pack is to be built atop the squib.
A bullet hit squib assembly example to be attached to an actor's wardrobe.
An actor behind-the-scenes with pre-scored "bullet holes" on his costume and squibs blowing open fake blood packets for a gunshot wound stunt.
Pyrotechnic charges from ejector seat of MiG-21F-13 fighter in the Aviation Museum of Central Finland

A squib is a miniature explosive device used in a wide range of industries, from special effects to military applications. It resembles a tiny stick of dynamite, both in appearance and construction, but has considerably less explosive power. A squib consists of two electrical leads separated by a plug of insulating material; a small bridge wire or electrical resistance heater; and a bead of heat-sensitive chemical composition, in which the bridge wire is embedded.[1] They can be used to generate mechanical force to shatter or propel various materials; and for pyrotechnic effects for film and live theatrics.[2]

A squib generally consists of a small tube filled with an explosive substance, with a detonator running through the length of its core, similar to a stick of dynamite. Also similar to dynamite, the detonator can be a slow-burning fuse, or as is more common today, a wire connected to a remote electronic trigger.[3] Squibs range in size from ~2 to 15 mm (0.08 to 0.6 in) in diameter.[2]

  1. ^ Thibodaux, J. G. (July 1, 1961). "Special Rockets and Pyrotechnics Problems". Langley Research Center. NTRS. Retrieved 20 May 2019.
  2. ^ a b "Top 10 Frequently Asked Questions". Fantasy Creations FX. Archived from the original on 10 July 2011.
  3. ^ US 5411225, Lannon, Robert G. & Weldon, William F., "Reusable non-pyrotechnic countermeasure dispenser cartridge for aircraft", published 1995-05-02