MIL-PRF-49291/6C
(Some nuclear radiation resistance characteristics of this optical fiber are
classified and shall be obtained from the qualifying activity. Application
to receive these requirements must be made through the Department of the Navy,
Naval Surface Warfare Center, Dahlgren Division, ATTN: Code B35, 17320 Dahlgren
Road, Dahlgren, VA 22448-5100. Information concerning security clearance
classification and "need to know" must be detailed in the request.)
TABLE III.
Steady state gamma radiation test requirements.
Specified
Attenuation at
PIN
Maximum induced
recovery time
specified
attenuation
(sec)
recovery time
(dB/km)
(dB/km)
<6
M49291/6-02S
<5
10,000
M49291/6-04S
< 15 @ -28oC 1/
< 50
1,000
1/
M49291/6-03
< 5 @ 25oC
M49291/6-05
< 5 @ 85oC
1/The radiation induced loss for a given threat. The total dose associate
with the threat is classified and not necessarily equal to the test total
dose.
QUALITY CONFORMANCE:
In group A testing length may be measured using mechanical methods.
In group C testing the mechanical strippability test may be omitted if the
optical fiber coatings have not changed from when the mechanical
strippability test was last performed. The manufacturer shall provide a
certificate of compliance for mechanical strippability in the group C test
report.
The following additional requirements and tests are applicable to space
qualified PIN:
a.
Storage temperature: Applicable.
b.
Thermal vacuum outgassing: Applicable.
c.
Odor: Applicable.
d.
Toxicity: Applicable.
Part or identifying number (PIN).
(See figure 1 and table IV):
M49291/6-02S
M49291/6-03
M49291/6-04S
M49291/6-05
4