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|  MIL-C-18087A(SH)
5.1.6 Unpac king. Clutch containers shall be marked and unpacking instruc-
tions provided when normal unpacking procedures may damage the container contents.
Instructions shall be placed in a sealed waterproof envelope prominently marked
"UNPACKING INSTRUCTIONS" and the envelope shall be firmly affixed to the outside.
6.
NOTES
(This section contains information of a general or explanatory nature that
may be helpful, but is not mandatory.)
6.1 Intended use. This specification is intended to be applied to clutches
for service on propulsion units for Navy ships. The intended arrangements and
details are those of conventional design (similar units having been built
previously and installed on board Navy ships or comparable commercial ships).
When a departure from conventional design is contemplated, consideration should be
given to applying this specification as a general guide for construction of a
prototype. The prototype shall be tested and evaluated to assure that it is
suitable for Navy use prior to the manufacture of production models.
6.2 Acquisition requirements.
Acquisition documents must specify the
following:
(a)
Title, number, and date of this specification.
(b)
Issue of DoDISS to be cited in the solicitation, and if required,
the specific issue of individual documents referenced (see 2,1.1
and 2.2).
Clutch required; type and class (when applicable) (see 1.2).
(c)
(d)
If first article inspection is required (see 3.1).
(e)
Clutch materials required, if other than those of tables I and II
(see 3.2).
Whether cast iron parts are permitted (see 3 2.1).
(f)
Design torque load if other than 120 percent of full power torque
(g)
and when clutch requirements are needed (see 3.3.1).
(h)
Over torque number and frequency of occurrence (see 3.3.1.4).
Misalignment requirements (see 3.3.1.4, 3.4.7.4 and 6.11).
(i)
If retaining nuts are required for splined or shrunk shafts
(j)
(see 3.4.3.1).
When lube oil is not supplied from propulsion gear or parent
(k)
equipment system (see 3.4.5 and 3.8.3).
Tooth contact requirements, type V and VI (see 3.4.7.11).
(l)
(m)
Percentage of full-power torque, if other than as specified
(see 3.4.7.12).
(n)
Allowable tooth stress limits if calculations are to be compared to
allowable limits (see 3.4.7.12).
(o)
Whether aluminum alloys are permitted for weight critical housing
parts or guards (see 3.4.8).
Shock design, test, and acceptance requirements if other than
(p)
parent equipment requirements (see 3.4.9).
Clutch special features (see 3.4.17).
(q)
Ambient pressure range of the clutch environment (see 3.11.4).
(r)
Type of rotor construction, type I (see 3.5.1).
(s)
Oil filling method, oil filling and dumping time (see 3.5.1.1).
(t)
Type of actuation, sliding scoop tubes (see 3.5.1.2).
(u)
30
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