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Since explosives detonate at typically 7–8 kilometers per second, or 7–8 meters per millisecond, a 1 millisecond delay in detonation from one side of a nuclear weapon to the other would be longer than the time the detonation would take to cross the weapon.
The peak intensity came 4 minutes after detonation, the delay relative to 557.7 nm arising from the longer lifetime of the 1 D state. The emission from the 1 D state dropped in a strictly exponential manner for 7 minutes, allowing an accurate measurement of the decay constant for that state.
A proximity fuse (also VT fuse [1] [2] [3] or "variable time fuze") is a fuse that detonates an explosive device automatically when it approaches within a certain distance of its target. Proximity fuses are designed for elusive military targets such as aircraft and missiles, as well as ships at sea and ground forces.
The common term in military terminology for shaped-charge warheads is high-explosive anti-tank (HEAT) warhead. HEAT warheads are frequently used in anti-tank guided missiles , unguided rockets , gun-fired projectiles (both spun ( spin stabilized ) and unspun), rifle grenades , land mines , bomblets , torpedoes , and various other weapons.
The detonation velocity values presented here are typically for the highest practical density which maximizes achievable detonation velocity. [ 1 ] The velocity of detonation is an important indicator for overall energy and power of detonation, and in particular for the brisance or shattering effect of an explosive which is due to the ...
The attitude then changed and SUBROC flew to its destination following a predetermined ballistic trajectory. At a predetermined time in the trajectory, the reentry vehicle (containing the warhead) separated from the solid fuel motor. The low kiloton [a] W55 nuclear depth bomb dropped into the water and sank rapidly to detonate near its target ...
This warhead type uses the interaction of the detonation waves, and to a lesser extent the propulsive effect of the detonation products, to deform a dish or plate of metal (iron, tantalum, etc.) into a slug-shaped projectile of low length-to-diameter ratio and project this towards the target at around two kilometers per second.
The warhead was tested on July 7, 1962, in the Little Feller II weapons effects test shot, and again in an actual firing of the Davy Crockett from a distance of 1.7 miles (2.7 km) in the Little Feller I test shot on July 17, 1962. This was the last atmospheric test detonation at the Nevada Test Site.