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 is
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Specific impulse, psi-ms
ig
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Impulse of gas pressure, psi-ms
k,k -
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Factor to determine form of positive and negative,
respectively, p-T curve
kv
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Velocity decay coefficient
L
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Length, ft
MA
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Fragment distribution parameter
Nf
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Number of fragments with weight greater than the
critical weight
NT
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Total number of fragments
Pmo
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Maximum mean pressure, psi
Pr
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Peak reflected pressure, psi
Ps
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Pressure at time ts, psi
Pso
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Peak positive incident pressure, psi
P -so
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Peak negative incident pressure, psi
(Pso)max
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Peak pressure, psi
PDF
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Probability distribution function
qo
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Peak dynamic pressure, psi
R
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Horizontal distance, ft
Rf
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Distance from detonation to the protective structure,
ft
RF
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Distance to the point on the wall farthest from the
charge
RN
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Distance to the point on the wall nearest to the charge
(tA)F
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Arrival time blast wave at a point on the wall farthest
from the charge, ms
(tA)N
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Time of arrival of blast wave at the point on the wall
nearest to the charge, ms
tc
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Average casing thickness, in
tg
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Duration of gas pulse, ms
t'g
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Fictitious gas pressure duration, ms
2.08-66
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