Flashcards in 17 - A-2-1-73 Deck (20):
what is velocity of LOW Order detonation?
less than 8200 ft/s (2499 m/s)
√√ during a deflagration large fragments of munition casing may be projected how far?
656 ft (200M)
√√ Does a low order or deflagration consume greater amounts of explosive filler?
deflagration consumes more filler
during a deflagration to detonation transfer how much volume of gas is released with the explosive release of heat?
about a liter per gram
√√ The EOD tech can adjust violence of the reaction through exploiting what areas of the munition?
the fuze well, baseplate - as compared to the center of the bomb
how might an EOD tech achieve structure failure
explosively cutting a groove via linear shape charge, the weakened part fractures , decreasing confinement, reducing reaction rate = low order
√√ explosive volatility is related to what characteristic of the explosive?
√√ do either plastic explosives (PBX) or cast (brittle: TNT/tritonal) explosives exhibit greater volatility?
cast exhibit greater volatility
when using a thermite on a U.K. 1000 lbs bomb how long does it take for them to deflagrate?
what weapon calibers is usually used against sub-munition clearance?
5.56 or 7.62mm
√√ what type of ammunition may initiated a deflagration of a bomb (larger submunitions)?
.50 cal API ( armor piercing incendiary) (ROFOUS). .50 ball rounds have little or no effect on a bomb.
are thermites typically used against landmines/bombs? or projo/rockets?
what are the two effects that a pancake charge produces in regards to low orders ?
first induces ignitions , second the hole reduces confinement of the case
gas develops, cant escape, the increase pressure accelerates the reaction rate inside the munition describes what?
√√ Cast explosives fracture easily=large surface area allows for increased burning reaction = higher volatility ? T/F?
√√ What is the problem with trying to burn TNT filled projos?
fuze well is small and oxygen is prevented from entering the round, extinguishing the burning reaction
√√ The rate of reaction can be affected by?
Confinement, the strength of the ignition stimulus, or the volatility of the explosive filler. Increase pressure accelerate the reaction rate, in-turn accelerates the gas evolution
Possible outcomes for 5.56 7.62 on submunitions?
sometimes deflagrations, mechanical damage; variable to no reaction at all.
Mk 23 or 24 EXRODs (normally to powerful for low order, but variations with standoff they may be used