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| MIL-T-5578C
(c) Class A or B:
4.3.1.1 Phase I test samples. Phase I test
(1) Protection levels (C) or (D):
samples shall consist of the following:
a. Three cells with outside dimensions
(B) Class A (flexible construction):
of 30 by 30 by 24 inches containing
(1) Protection levels (A) and (B).
a fitting conforming to. Part No.
-
a. Three flexible cells to fit the metal
MS29582-1, centered on the top
container shown in figure 1 The
surface thereof. The top of the cell
flexible cells shall contain a fitting
and the top half of the sides shall
conforming to Part No. MS29582-1
be of approved non-self-sealing
centered on the top surface thereof.
construction conforming to MIL-T-
b. Eight metal side panels in accord-
6396, type II. The lower half of
ance with sheet 5 of figure 1
the sides and bottom shall be of self-
C. Eight sheets of backing material 27
sealing construction conforming to
by 30 inches and two sheets of
requirements specified herein.
backing material 30 by 30 inches,
b. Eight metal side panels in accord-
conforming to MIL-P-8045. The
ance with sheet 5 of figure 1.
weight of the backing material for
c. Eight sheets of backing material 27
style 1 cells shall not exceed
by 30 inches and two sheets of back-
pound per square foot.
ing material 30 by 30 inches con-
d. Two 12- by 12-inch samples of
forming to MIL-P-8045. The
composite cell construction.
weight of the backing material for
e. One sample of inner-layer ply,
style 1 cells shall not exceed
without barrier, approximately 900
pound per square foot.
square inches in area with seam.
d. Two 12- by 12-inch samples of com-
f. One sample of inner-layer ply, with
posite cell construction.
barrier, approximately 900 square
e. One sample of inner-layer ply, with-
inches in area without seam.
out barrier, approximately 900
g. One sample 6 by 6 by 0.075 to 0.125
square inches in area with seam
inch inner-layer ply, without
(self-sealing portion only).
barrier.
f. One sample of inner-layer ply,
(b) Class B (semi-rigid or self-supporting
with barrier, approximately 900
construction):
square inches in area without seam
(1) Protection levels (A) and (B):
(self-sealing portion only).
a. Three semi-rigid or self-supporting
g. One sample 6 by 6 by 0.075 to
self-sealing cells with outside dimen-
0.125 inch inner-layer ply, without
sions of 30 by 30 by 24 inches con-
barrier (self-sealing portion only).
taining a fitting conforming to Part
None of these samples shall be preplasticised
No. MS29582-1 centered on the top
with fluid prior to submission. Any variations
surface thereof.
in the basic construction will be approved by
b. Two 12- by 12-inch samples of com-
the procuring activity and shall be indicated by
posite cell construction.
a suitable dash numbering system.
c. One sample of inner-layer ply,
4.3.1.2 Phase I test. Phase I preproduc-
without barrier, approximately 900
tion tests shall consist of the following tests
square inches in area with seam.
described under 4.6:
d. One sample of inner-layer ply, with
(a) Inspection ---------------------- (4.6.1)
barrier, approximately 900 square
(b) Inner-layer ply- - - - - - - -- --------- (4.6.4)
(c) Cells -------------- ------------- (4.6.5)
inches in area without seam.
e. One sample 6 by 6 by 0.075 to 0.125
4.3.2 Phase II preproduction testing. For
inch inner-layer ply, without
purposes of this specification, phase II prepro-
duction tests are those tests accomplished on
barrier.
5
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