MIL-P-45651B(MU)
3.4.2 Operating temperatures. The peri-
PACKAGING DATA SHEET
scope shall meet the applicable requirements
MIL-P-14232/-Packaging of Peri-
of 3.6.1, 3.8.5, 3.9.6, 3.9.7, and 3.9.12.3 while
scopes, Tank:
P8289172
exposed to and thermally stabilized at am-
M31 and M31C
bient temperatures of 40° and +150° F.
(Copies of specifications, standards, drawings, and
3.4.3 Vibration. The periscope shall be
publications required by suppliers in connection with
vibrated at a constant frequency of 30 cycles
specific procurement functions should be obtained
from the procuring activity or as directed by the
per second with an amplitude of 1/16 inch
contracting titer.)
(1/8 inch total excursion) for a period of 5
minutes + 15 seconds. Subsequent to vibra-
3. REQUIREMENTS
tion, there shall be no evidence of physical
failure and the periscope shall meet all the
3.1 Materials, Materials shall be in ac-
following requirements of this specification.
cordance with the drawings, material speci-
fications, and general specifications forming
3.4.4 Line of sight retention, The line of
a part of this specification.
sight of the periscope shall be retained with-
in 0.2 mil in elevation and deflection of an
3.2 Fabrication. The periscope designated
original setting subsequent to the vibration
in the contract or purchase order shall be
specified in 3.4.3.
manufactured in accordance with the ap-
plicable drawings listed in Section 2 and all
3.5 Cleanliness. The periscope shall meet
other drawings pertaining thereto.
the cleanliness requirements of Specification
MIL-O-13830, and there shall be no more
3.3 General specifications. The contractor
than 2 particles of dirt visible at area C of
shall be responsible for adherence to, and
the mirror, when viewing through the 8-
compliance with, the following requirements
power system, nor more than 4 particles
of Specifications MIL-O-13830 and MIL-F-
apparent in the unity power system. Each
13926:
particle shall not be in excess of an area
equivalent to a size 10 dig. There shall be
3.3.1 MIL-O-13830.
no dirt which interferes with observation
(a) Cleanliness.
or adversely affects image quality.
(b) Illuminated reticle.
Note. The following references apply throughout
this specification.
3.3.2
MIL-F-13926.
Head Assembly
Order of precedence.
(a)
Area C
Dwg. B8289186 (8X aperture)
Dimensions and tolerances.
(b)
Datum plane X Dwg. F8289176 (locating pads)
(c)
Inorganic protective surface fin-
Datum plane Y Dwg. F8289176 (horizontal
stops)
ishes.
Datum plane Z Dwg, F8289173 (Body mount-
(d) Electrical and electronic assemblies.
ing surface)
(e) Part identification and marking.
Body Assembly
(f) Workmanship.
For {eriscope M31
Reference line Y and
9.4 Environmental.
Datum plane X Dwg. F8289211
(Inter-
section of
3.4.1 Storage temperatures. The periscope
planes)
shall show no evidence of physical failure
For Periscope M31C
and shall meet all performance requirements
Reference line Y and
Datum plane X Dwg. F10516378 (Inter-
of this specification at a standard ambient
section of
temperature of 60° to 90° Fahrenheit (F.)
planes)
after having been exposed to and thermally
stabilized at ambient temperatures of --80°
3.6 Parallax. With the parallax adjust-
and +160° F.
ment centered at the midpoint of the ob-
2
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