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|  MIL-T-48558B(AR)
TABLE
III
ROOM
OPERATING
STORAGE
TEMP
SOAK
SOAK
TEMP
TEMP
SOAK
SEQ
+160F(71C)
4 hrs.
1
2 hrs.
+150F(65C)
2
+60F to 90F 3 hrs.
3
(+16C to +32C)
4 hrs. -50F(-46C)
-50F(-46C)
4 hrs.*
4
+60F to 90F 3 hrs.
5
(+16C to +32C)
*
Same
4
hrs
as
Storage
Soak
4.7.2 S h o c k . This test is applicable to the First Article
The telescope
samples and the reliability assurance sample only. The telescope
shall be positioned on Adapter 10549199 and secured to the shock
tester. The telescope shall then be subjected to a shock test in
accordance with 3.6.3 Upon completion of the shock test, the
telescope shall be subjected to a visual and tactile examination
and shall meet the requirements of 3.7.3.
4.7.3 Vibration "A". This test is applicable to the First
4.7.3 Vibration "A".
The
Article samples and the reliability assurance sample only. The
telescope shall be positioned on Adapter 10549199 and secured to
the vibration test in accordance with 3.7.4 of this specification.
Upon completion of the vibration test, the telescope shall be
subjected to a visual and tactile examination and shall meet the
requirements of 3.7.4.
4.7.4 Vibration "B". The frequency and duration shall be as
outlined in 3.7.4.2. At the conclusion of the test, the telescope
shall be subjected to a visual and tactile examination and shall
meet the requirements of 3.7.4.2.
4.8 Methods
of
inspection.
4.8.1 Orientation. Test Fixture F10558254 shall be used for
the inspection of Elbow Telescope M138. Position the test fixture
on a vibration free surface in accordance with the setup
instructions outlined on drawing F10558254. Follow the
calibration and setup instructions prior to positioning telescope
to the fixture. Subsequent to completion of all setup
instructions, the telescope shall be orientated as specified in
paragraph 3.6 of this specification.
4.8.2 Collimation. The telescope shall be positioned as
specified in paragraph 3.6. The intersectinq point of the
boresight cross of the telescope reticle shall be within the
tolerance block of the target reticle. The intersecting point
must be within the limit specified for the collimation of reticle,
13
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