Search results
Results from the WOW.Com Content Network
The Graphite-Epoxy Motor (GEM) is a family of solid rocket boosters developed in the late 1980s and used since 1990. GEM motors are manufactured with carbon-fibre-reinforced polymer casings and a fuel consisting of HTPB -bound ammonium perchlorate composite propellant .
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 detonation pressure. The pressure can be calculated using Chapman-Jouguet theory from the velocity and density.
Further modifications of its burning rate were achieved by shaping the powder grains into prismatic shapes, typically single-perforated hexagonal or octagonal prisms. They became obsolete as a propellant due to the introduction of nitro-explosive propellants such as Poudre B , in France, and later by Nobel's ballistite and, in Britain, by cordite .
a small amount of a more powerful secondary explosive, directly in contact with the primary, and called "base" or "output" explosive, able to carry out the detonation through the casing of the detonator to the main explosive device to activate it. Explosives commonly used as primary in detonators include lead azide, lead styphnate, tetryl, and ...
It is an aluminized (powdered aluminum) explosive having the same order of sensitivity as Composition B. [1]Tests indicate that it is about 98% to 100% as powerful as Torpex, that it is definitely less sensitive than Torpex in both laboratory impact and bullet impact, that it is slightly more sensitive in these respects than TNT, and that it is about the same order as Composition B. [2]
Amid the solar activity, the sun even emitted an explosive burst of radiation that became the largest solar flare detected since 2017, according to the NOAA. The phenomenon, ...
M734 fuze cross section Amplifier (top) and oscillator. The M734 multi-option fuze [1] is a rangefinder and collision detection system used on 60 mm, 81 mm, and 120 mm mortar shells as a trigger to detonate the shells at the most damaging heights of burst when combating four types of battlefield threats:
Airburst effect from 40mm round on dummy soldiers. An airburst round is a type of tactical anti-personnel and anti-aircraft explosive ammunition, typically a shell or grenade, that detonates in midair, causing air burst effect fragment damage to enemy personnel or aircraft (notably comparably unsophisticated unmanned aircraft systems such as modified racing drones).