MIL-DTL-62186C
3.7.8 Fungus resistance. The alternator shall operate in environments conducive to spore
germination and growth (air temperature between 75 to 88F (24 to 31C) and relative humidity
between 90 to 100% without a compromise in performance attributable to the deleterious effects
of fungus.
4. VERIFICATION
4.1 Classification of inspections. Inspection requirements are classified as follows:
a. First article inspection (see 4.1.1).
1. Preproduction inspection (PPI) (see 4.1.1.1).
2. Initial production inspection (IPI) (see 4.1.1.2).
b. Conformance inspection (see 4.1.2).
4.1.1 First article inspection. First article inspections shall be performed on
preproduction or initial production samples as specified in 4.1.1.1 and 4.1.1.2.
4.1.1.1 Preproduction inspection. When specified (see 6.2), a preproduction sample
consisting of two alternators shall be subject to the PPI tests as specified in table III.
4.1.1.2 Initial production inspection. Unless otherwise specified (see 6.2), an initial
production sample consisting of two alternators from the first ten produced shall be subject to the
IPI tests as specified in table III.
TABLE III. Verification methods.
First article inspections
Require-
Inspec-
PPI sample
IPI sample
Conformance
Title
ment
tion
1
2
1
2
Exams 100%
3.2
X
X
X
4.3.3
Design and construction
3.3
4.3.4
X
X
Materials
Material compatibility
3.3.1
4.3.4
X
X
Dissimilar metals
3.3.2
4.3.4
X
X
3.4
4.3.5
X
X
X
X
X
Operating requirements
Overspeed
3.4.1
4.3.5.1
X
X
X
X
Maximum field voltage
3.4.2
4.3.5.2
X
X
X
X
X
Field resistance
3.4.3
4.3.5.3
X
X
X
X
X
Output power
3.4.4
4.3.5.4
X
X
X
X
Ripple voltage
3.4.5
4.3.5.5,
X
X
X
X
Acceptance
4.3.5.5.1
X
Overload output current
3.4.6
4.3.5.6
X
X
X
X
X
AC signal
3.4.7
4.3.5.7
X
X
X
X
X
8
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