MIL-DTL-87104C
4.6.4.12.2 Procedure.
a.
The assembly shall be subjected to the examination of product, procedure II (see 4.6.1.2), VSWR,
procedure II (see 4.6.2.1.2), and RF insertion loss, procedure I and II (see 4.6.2.3.2 and 4.6.2.3.3).
b.
The assembly shall be exposed to the listed fluids and solutions in the sequence shown for the specified
exposure period. Exposure to all solutions and drying period shall constitute one test cycle:
Solution or fluid
Exposure period
(1)
JP-4 or JP-5 fuel
3 hours
(2)
Water rinse
5 minutes
(3)
Hydraulic fluid
4 hours
(4)
Water rinse
5 minutes
(5)
Cleaner/brightener
15 minutes
(6)
Water rinse
5 minutes
(7)
Epoxy stripper
15 minutes
(8)
Water rinse
5 minutes
(9)
Air dry storage
16 to 24 hours
The assembly shall be immersed in each solution with no protective caps or coverings on the primary
interfaces.
c.
The test sample shall be subjected to ten test cycles of the chemical resistance test.
d.
After completion of the ten test cycles, the assembly shall be subjected to the tests as specified in 4.6.1.2,
4.6.4.12.3 Accept-reject criteria (see 3.5.3.14). If the assembly fails to meet accept-reject criteria specified in
4.6.1.2.2, 4.6.2.1.2.5, 4.6.2.3.2.1 and 4.6.2.3.3.1, the unit shall be considered to have failed chemical resistance test.
4.6.4.13 Leakage (contaminants) tests (see 3.5.3.15). The leakage tests shall determine the environmental seal of
integrity of the coaxial assembly. Leaks, both gross and minute, in combination with exposure to wide differentials in
atmospheric pressure will cause the coaxial assembly to "breathe" and to absorb contaminants that could degrade
the line's electrical performance to an unacceptable level. This test shall apply to all coaxial assemblies, except that
semi-flexible assemblies may be tested prior to forming or bending. If tested prior to forming or bending, the
assemblies shall be further tested after forming or bending to verify conformance to the vapor leakage requirements
(procedure I).
4.6.4.13.1 Procedure I (vapor leakage). Unless otherwise specified in the detail specification, procedure I shall be
used to verify the leakage rate on all first article testing.
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