Is lead azide a secondary explosive?
They are usually high explosives such as the fulminates and lead azide, although lead azide may be sensitized with a small amount of lead styphnate. Secondary explosives, those that do not easily go from deflagration to detonation, do not initiate electrostatically with ease, and require larger shocks to detonate.
Why lead azide is explosive?
Lead azide has immediate deflagration to detonation transition (DDT), meaning that even small amounts undergo full detonation (after being hit by flame or static electricity). Lead azide reacts with copper, zinc, cadmium, or alloys containing these metals to form other azides.
Is Dynamite a secondary explosive?
Secondary explosives are used in larger quantities in an explosive train and are usually initiated by a smaller quantity of a primary explosive. Examples of secondary explosives include TNT and RDX.
Is HMX a primary or secondary explosive?
Any shock, friction, or heat makes primary explosives to burn or blast fast. Mercury fulminate, picric acid, lead azide, nitroglycerine and iodine nitride are examples of primary explosives. TNT, dynamite, hexogen, HMX and Torpex are examples of secondary explosives.
What makes HMX an explosive?
HMX, also called octogen, is a powerful and relatively insensitive nitroamine high explosive, chemically related to RDX. The molecular structure of HMX consists of an eight-membered ring of alternating carbon and nitrogen atoms, with a nitro group attached to each nitrogen atom.
Can detonators explode?
Instead of heating up the explosive, the EBW detonator wire is heated so quickly by the high firing current that the wire actually vaporizes and explodes due to electric resistance heating. That electrically driven explosion then fires the detonator’s initiator explosive (usually PETN).
What do you call someone who likes explosions?
The term pyromania comes from the Greek word πῦρ (pyr, fire). Pyromaniacs start fires to induce euphoria, and often fixate on institutions of fire control like fire houses and firemen. Pyromania is a type of impulse control disorder, along with kleptomania, intermittent explosive disorder and others.
What is the difference between low explosives and high explosives?
Low explosives are mixtures of chemicals that burn very rapidly, but subsonically (as opposed to supersonically), meaning that they “deflagrate.” They consist typically of fuel and an oxidizer. High explosives consist of materials that typically combine the reacting elements in the same molecule.
What is a high order detonation?
A high order detonation is generally an ordnance detonation that results in an explosive ordnance producing a designed/intended explosive yield. A low order detonation is generally a controlled ordnance detonation or a malfunctioned ordnance detonation that results in a significantly lower yield than designed.
Is picric acid a primary explosive?
It is one of the most acidic phenols. Like other strongly nitrated organic compounds, picric acid is an explosive, which is its primary use.
How explosive is PETN?
Its basic explosion characteristics are: Explosion energy: 5810 kJ/kg (1390 kcal/kg), so 1 kg of PETN has the energy of 1.24 kg TNT. Detonation velocity: 8350 m/s (1.73 g/cm3), 7910 m/s (1.62 g/cm3), 7420 m/s (1.5 g/cm3), 8500 m/s (pressed in a steel tube)
Why is gunpowder a low explosive?
Gunpowder is classified as a low explosive because of its relatively slow decomposition rate and consequently low brisance. Low explosives deflagrate (i.e., burn) at subsonic speeds, whereas high explosives detonate producing a supersonic shockwave.
Which is often used as the explosive core in a detonating cord?
While it looks like nylon cord, the core is a compressed powdered explosive, usually PETN (pentrite), and it is initiated by the use of a blasting cap. Detonation cord will initiate most commercial high explosives (dynamite, gelignite, sensitised gels, etc.)
When did armies start using guns?
By 1415, some infantrymen began deploying the first “hand cannons”, and the earliest small-bore arquebuses, with burning “match locks”, appeared on the battlefield in the later 15th century.
Did Mughals use guns?
During its conquests throughout the centuries, the military of the Mughal Empire used a variety of weapons including swords, bows and arrows, horses, camels, elephants, some of the world’s largest cannons, muskets and flintlock blunderbusses.
When did percussion replace flintlock?
1830’s
What is the function of a percussion cap?
The percussion cap or percussion primer, introduced in the early 1820s, is a type of single-use percussion ignition device for muzzle loader firearm locks enabling them to fire reliably in any weather condition.