FLETC Written Exam 4 With
Verified Answers Latest Updated
2024/2025 Graded A+.
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Terms in this set (259)
Mechanical
Three Types of
Chemical
Explosions
Nuclear
Explosive which normally requires a
blasting cap for initiation and once
initiated produces a supersonic
detonation with a shattering or
High Explosive
brisant effect
Detonate without confinement,
doesn't need container
, Explosive, which when unconfined,
responds to initiation by
deflagration or burning and
Low Explosive produces a pushing effect
Transitions from deflagration to
detonation when confined
Incendiary Explosive designed to start fires or
Explosive destroy sensitive equipment
Supersonic combustion that
propagates through shock
Detonation compression generating exothermic
heat and an accompanying blast
wave
A subsonic combustion that
Deflagration propagates through thermal
conductivity
Thermal
Effects of an
Blast Pressure
Explosion
Fragmentation
, Usually seen as a bright flash or
fireball at the moment of detonation
May cause localized ignition of
Thermal Effect
highly combustible materials
Generally least damaging of the
three effects
Very hot gasses (between 3,000 and
7,000 degrees Fahrenheit) expand
out from the point of detonation at
supersonic velocities (up to 20,000
mph)
The further the pressure wave
Blast Pressure
travels, the less power it has
Effect
Most powerful and
destructive/deadly of the effects
When taking place in a confined
area, it can amplify the original blast
wave
Two Phases of Positive Phase
Blast Pressure Negative Phase
Verified Answers Latest Updated
2024/2025 Graded A+.
Save
Terms in this set (259)
Mechanical
Three Types of
Chemical
Explosions
Nuclear
Explosive which normally requires a
blasting cap for initiation and once
initiated produces a supersonic
detonation with a shattering or
High Explosive
brisant effect
Detonate without confinement,
doesn't need container
, Explosive, which when unconfined,
responds to initiation by
deflagration or burning and
Low Explosive produces a pushing effect
Transitions from deflagration to
detonation when confined
Incendiary Explosive designed to start fires or
Explosive destroy sensitive equipment
Supersonic combustion that
propagates through shock
Detonation compression generating exothermic
heat and an accompanying blast
wave
A subsonic combustion that
Deflagration propagates through thermal
conductivity
Thermal
Effects of an
Blast Pressure
Explosion
Fragmentation
, Usually seen as a bright flash or
fireball at the moment of detonation
May cause localized ignition of
Thermal Effect
highly combustible materials
Generally least damaging of the
three effects
Very hot gasses (between 3,000 and
7,000 degrees Fahrenheit) expand
out from the point of detonation at
supersonic velocities (up to 20,000
mph)
The further the pressure wave
Blast Pressure
travels, the less power it has
Effect
Most powerful and
destructive/deadly of the effects
When taking place in a confined
area, it can amplify the original blast
wave
Two Phases of Positive Phase
Blast Pressure Negative Phase
