Explosive And Propellents Flashcards
What colour produces red smoke?
Strontium nitrate
what are the ingredients of Greek fire?
sulfur, pitch, Naphtha
what does Ballisite consist of ?
capmhor, nitro glycerin, nitro cellulose
what are the 4 types of of modern smokeless propellants?
single, double triple based and composite
What components make up gun cotton?
NC, Nitric Acid and cotton fibers
what was added to the picric acid explosives to increase there effectiveness
Tetryl (boer war, yellow mist,)
what are the pyrotechnic groups
Illum, smoke, signal, delay, tracer, priming, simulators and pyromechanisms
what are the effects of pyrotechniques?
heat, light, smoke, noise
what is added to make the colours?
Red - strontium nitrate yellow - sodium nitrate White - barium and potassium mixture blue - copper carbonate Green - barium nitrate Orange - calcium nitrate
what are the characteristics of primer compositions?
easily ignited generates high heat not burn to quickly or violently produce some solid products of combustion be compatible with the mixture used
primary explosive defintion
a substance or mixture of substances used to initiate a detonation or a burning reaction
what are the types of explosive intiators
detonators and igniters
what are the types of intiators
exploding bridge wire,
What are the types of initiators?
Stab ignitors Percussion ignitors Hot bridge wire ignitors Conducting composition ignitors Exploding bridge wire ignitors Pro technique ignitors
What are some low explosives
Gunpowder
Pyro
Propellant
What are some high explosives
Tetryl
Comp b
RDX
CE
What is comp b %
RDX 59.5
Tnt 39.5
Wax 1%
What do additives do to high explosives
Decrease sensitivity Increase maldobility Increase sensitivity Improve stability Increase blast effect
What is a desensitized in high explosives
TNT
WAX
ALLUMINIUM
Caps or primiers contain three primary components what are they?
The primery explosice
The oxidiser
The sensitiser
What is the purpose of a dark ignitor tracer
To prevent dazzling
To minimise the enemies ability to pin point filter position.
What are the design requirements for illumination
Withstand firing forces
Enough luminosity
Burn for correct time
What are the ideal properties for smoke
Immediate effect Unaffected as much as possible by weather Persistent Non anti personal Non incendiary
What are armies smoke requirments
Screening and signalling
Definition of ignitor composition
A pyrotechnic composition used to ignite propellant explosive systems giving off hot flames, usually accompanied by sparks and hot gasses for relatively short times.
Metals useful in incindery
Magnesium and alluminum
Delay definition
A device which provides a time delay for a burning train of inflammable composition between events.
A pyro delay between two igniting or exploding events
Definition propellants
Propellants are an explosive which by controlled burning provides gas pressure required to give motion to a projectile or missile.
What are the types of propellants
Single base
Double
Triple
Composite
Advantages of single based propellant
Cooler burning
Generates considerable less erosive
Ballistics less effected by change in tempreture
Advantages of double based propellant
Easily ignited
Higher energy rating than single based
Higher flame temp
Higher burning rate
What are the propellant additives
Stabilizers plasticisers Coolant surface moderants Surface lubricants Flash inhibitor Decoppering agentsanti Antiwear additives
What are the main chemicals used as a Dr competing agent
Tin
lead
Bismuth (not tought)
How are the rates of burn controlled
Size
shape
composition
What are the types of burning
Progressive
Regressive
Neatrual
Name the propellant shapes the do a constant burn
Tubular
Cogged
Star center
Slotted tubular
What is a carbomite
Plastiser
Stabilizer
Coolant
Moderant
