MIL-C-24604(SH)
Type I
Type 11
Outside diameter
6.75 inches maximum
(b)
5.75 inches maximum
23.5 inches maximum
Length (overall)
20.5 inches maximum
(c)
Weight (overall)
14 lb maximum
20 lb maximum
(d)
455
+ 10 or
5
250
Internal volume
(e)
-5
Shape - Cylinder envelope shall be cylindrical in accordance
(f)
with MS26545.
The cylinder shall be constructed of a liner of
aluminum alloy
see 3.2.7) reinforced with continuous filament glass fibers
in accordance with type III or IV, class I of MIL-R-60346 and epoxy or
polyester resin in accordance with MIL-C-47257 or MIL-R-21607, respec-
tively.
A resin system composed of Dow Chemical DER 332 and curing agent
`Y", or equal, may be used.
Material deterioration. Materials shall not deteriorate
3.2.2.1
when subjected to the environmental conditions specified herein.
3.2.2.2 Liner. Metal liner shall be aluminum alloy UNS A96061,
Other metals
O temper, neat treated to T6 condition after final forming.
Metal liner
or alloys may be proposed to the command or agency concerned.
material, design, and fabrication process shall not be altered from that
Liner
demonstrated to have acceptable life by first article inspection.
alloy and fabrication process snail be identified on the detail drawings,
No fissure or
and in the first article inspection report (see 4.3.2.1).
other defect is acceptable that is likely to weaken the finished cylinder.
Smooth and uniform surface finish is required, no interior folding in the
neck area of the liner is permitted; smooth gathering of the material in
the neck is acceptable.
3.2.2.3 Recovered materials. Unless otherwise specified herein,
all equipment, material, and articles incorporated in the products covered
by this specification shall be new and shall be fabricated using materials
produced from recovered materials to the maximum extent practicable without
The term "recovered materials" means
jeopardizing the intended use.
materials which have been collected or recovered from solid waste and
reprocessed to become a source of raw materials, as opposed to virgin raw
materials.
None of the above shall be interpreted to mean that the use
of used or rebuilt products is allowed under this specification unless
otherwise specifically specified.
Process details. The following process details shall be
3.2.3
followed in the fabrication of the cylinders:
Guide rolls shall be not less than 2 inches in diameter
(a)
for dry roving and not less than 1-1/2 inches in diameter
for resin impregnated roving to avoid unnecessary chafing
and flexing of the glass filaments.
Under no circumstances shall dry roving be permitted to
(b)
come into sliding contact with any elements of the winding
machine, with the exception of the 2 inch diameter guide
bar at the entrance of the resin pan.
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