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Ballistics, 2nd Edition
book

Ballistics, 2nd Edition

by Donald E. Carlucci, Sidney S. Jacobson
August 2013
Intermediate to advanced content levelIntermediate to advanced
608 pages
21h 36m
English
CRC Press
Content preview from Ballistics, 2nd Edition
379Penetration Theories
therefore
=
=md
t
d
dt
ρθ
ρθ
ππ
44
3075
20
75
se
cs
ec
..
(15.37)
If we now assume that
mV hm V
ii
i
n
=
=
r
1
(15.38)
This is equivalent to stating that m is the mass of material pushed ahead of the penetrator,
m is ejected with speed V
r
(plugging theory), and the total momentum of the ejecta jumble
is proportional to mV
r
. We can also write, in the limiting case, that the residual momentum
approaches the initial momentum or, mathematically
M
M
r
1
(15.39)
If we substitute Equation 15.38 into Equation 15.34, we get
mV hm VmV
rrss s
as V+
→→
(15.40)
which can be rearranged to yield
V
V
m
mhm
V
r
s
s
r
s
as
→→
+
(15.41)
We know that if ...
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Publisher Resources

ISBN: 9781466564374