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二战武器和弹药资料 catalog-of-enemy-ordnance-material-1945-part-2-of-3

ID：33014

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大小：17.25 MB

页数：103页

时间：2023-01-29

金币：50

上传者：战必胜
ROCKET
ASSISTED
PRERIFLED
PROJECTILE
28
cm
R.
Gr.
4331
i
Top,
left,
forward
body
(ogive)
and
venturi
tube:
center, venturi
assembly
without
spun
glass
sleeve:
right,
forward
body
assembled
to
main
body,
showing
prerlfling:
at
right,
assembly
with
cast
explosive
charge.
This
high explosive
projectile
is
fired
from
the
28
cm
K.
5
(E)
railway
gun,
and
is
prerifled
in
the
same
manner
as
the
28
cm
Gr.
35
described
on
page
312.
The
outstanding
feature
of
this
new
projectile
is
an
increase
in
range
from
67,800
yards
to
93,100
yards
-nearly
53
miles.
This
increase
of
37%
over
the
maximum
range
for
the
standard high explosive
round
is
the
result
of
energy
sup-
plied
to
the
projectile
by
the addition
of
rocket
propellant
powder
which
is
ignited
19
seconds
after
leaving
the
gun.
After
building
up
sufficient
pressure
to
shear
the
lip
on
the
base
plug,
the
rocket
propellant
located
in
the
ogive
of
the projectile
discharges
through
a
central
venturi
tube.
On
the
main
body
there
are
12
steel splines
set
at
the
angle
of
rifling.
The
forward
body
(ogive)
is
threaded
externally
to
screw
into
the
main
body
and
internally
at
its
nose
to
receive
the
fuze
and
a
rocket
propellant
ignition
system.
The
venturi
tube
which
extends
from
the
base
of
the projectile
to
its
middle
section
is
secured
by
being
screwed
into
the
fuze
and
venturi
adapter.
A
spun
glass
sleeve
insulates
the
venturi
tube
from
the
explosive
charge
which
is
cast
on
the
resulting
assembly.
A
Zt.
Z.
S/30
time
fuze
set
to
operate
19
seconds
after
the
projectile
is fired
is
screwed
into
the
nose
of
the
projectile.
Two
percussion
fuzes,
AZ
4331,
are located
in
the
venturi
adapter.
These
are
armed
by
the
burning
of
the
rocket
propelling
charge
through
a
powder
pellet
incorporated
in
the
fuze.
The
rocket
propellant
is
moulded
as
one
piece,
and
extending
through
it
are eight
longitudinal
holes
%-inch
in
diameter,
located
around
a
circular
hole
1
5
/-inch
in
diameter.
GERMAN
SPECIFICATIONS
Length
of
projectile
(less
fuze)
.............
48.79
ins.
Diameter
of
ribs
......................................
11.70
ins.
Diameter
of
rotating
band
......................
11.85
ins
Diameter
of
body
....................................
11.10
ins
Total
weight ............................................
545/4
lbs.
Rocket
propellant
weight
............................
43
lbs.
Explosive
weight
......................................
30
Ibs.
Maximum
range
..................................
93,100
yds.
OFFICE
CHIEF
6
OF
ORDNANCE
1
June,
1945
312.1
RESTRICTED
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