Contained detonating fuse

In order to answer the question of efficiency more or less quantitatively, Deffet and Fosse (Ref 7) conducted, in Belgium, tests by initiating by various methods AN-Fuel Oil (as well as RDX, AN/TNT/Al, etc) explosive cylindrical charges enclosed in Perspex containers. The method was similar to that used by Hershkowitz Dalrymple (Ref 6) at Picatinny Arsenal, Dover, New Jersey. For axial initiation, the detonating fuse extended thru whole length of the charge, as shown in Fig 1... 

Japanese 120mm Incendiary Projectile contained 48 steel pellets embedded in a canister filled with white phosphorous. Each pellet had an annular cavity to increase the amount of phosphorous that could be retained by each pellet. The shell was exploded by means of a bursting charge of HE, fired by a point-detonating fuse... 

Group B Ammunition containing primary explosives and not containing two or more effective protective features. For example, detonators, detonating fuses, medium warheads (in boxes). 

Common blackpowder or improved poudre H is also used in Belgium in opencast mines. The latter contains a certain amount of ammonium nitrate and is used only in mines when large charges of explosives are used. It is initiated exclusively by a detonating fuse. 

An intermediate detonator is provided for initiation of the charge with a detonator fuse contg pressed Tetryl or Pentolite. A table on p 114 contains a listing of commercial shaped charges used for blasting with dimensions for D, d, di,... 

Transfer fuses which have no priming effect are manufactured in the USA. Those containing only a fraction of one gram of PETN per meter and a lead sheathing are known as mild detonating fuses . Cords containing about 2g of the explosive per meter inside a plastic-impregnated network are manufactured as Primadet . 

Detonating cords contain high explosives and are used to detonate high explosive charges from a safe distance. The first detonating cord syn. detonating fuse was the Cordeau detonant cord, a lead tube filled with a TNT core... 

The velocity of detonation of a fuse is about 6500 m s-1. This is attained in the dry process by adequate consolidation of the core during manufacture. During the wet process the necessary density is attained automatically by the method of preparing the core. Fuse usually contains about 10 g PETN per metre length. 

With the possible exception of delay fuses, any pyrotechnic mixture represents a hazard worthy of report. Although the cause of frequent accidents reviewed in [2], compositions intended to explode or deflagrate are generally outside the field of this work and few are listed. Numerous reviews and specialist texts exist and hundreds of patents appear yearly. The account [1] of the theory and practice of pyrotechnics contains much useful information on the performance and potential hazards of a great variety of oxidant-fuel combinations which burn very rapidly or explosively. Safety measures are found in [2], Other reviews written from a functional viewpoint are found in [3] and [4], Some hazardously incompatible pyrotechnic mixes are reported [5], Detonability of pyrotechnic compositions has... 

A bomb can be considered to contain four functional blocks, namely, a control system, a detonator, a booster, and a main charge. Although a simple ignition fuse can be used as a control system and timing device, the control system is usually more mechanical or electrical in nature. The detection of control systems may be visual, or by magnetometry, or by X-ray. It must be remembered that many of the items involved in the ignition system, that is, clockwork, batteries, or electronic circuitry, are commonplace in ordinary items, such as cameras, mobile telephones, and personal stereos, and are not unique indicators of the presence of a bomb. In fact, it is the presence of explosives that is the key indicator of a bomb. 

Detonating Cord core of pentaerythritol tetra-nitrate (PETN) contained within a waterproof covering of textile or plastic available in several grades, each on spools of 500 or 1,000 feet. Manufactured by the Ensign-Bickford Company, Coast Fuse, Inc and Austin Powder Company SAFETY FUSE... 

Most dangerous group Black Powder and colloidal propellants, in bulk placed in boxes, and chlorate explosives, not cartridged. Dynamites with attached caps fuses, detonators, nonelectric at electric and Nitroceiiuioses wetted with at least 25% water. Aromatic nitrocompounds, packed in double containers the inner ones from leather, cardboard, heavy paper envelope., while the outer ones nf wood or copper. The fulminates must be transported in vessels filled with water... 

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