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|  MIL-F-48673
(AR)
At
the
completion of
4. 5.1
4. 8.1.4.4.4 Post vibration operation.
data
the post operational tests or paragraph
vibration testing,
The test results shall be recorded on the
shall be performed.
sheet.
to
the
ected
4. 8.1.5 shock. The FCC-FTS -unit 810 and MIL-T- 28800
shall be subj
The
q
STD-
applicable tests re quired by in Table XIV.
MIL
e listed
applicable tests ar
Shock
tests
TABLE
XIV.
Conditions
Test
3
2 directions in each of axes
(3 shocks each, 15g, half (Total
sine)
(11 msec non0perating)
of 18 shocks)
Test faCilitY. -
.
4. 8.1.5.1
The shock tests shall be performed ton the
o a
a. Shock test system.apable of exciting the test specimen
c
shock generating systeme amplitude, and time duration and he overall
T which was
puls
required waveform,
with MIL-S-4456.
l
(Eo/Ei) shal
designed and fabricated in accordance
system response ratio, ified below:
output divlded by input
within the limits spec
Res po ns e (Eo/E i )
Frequ ency Ranqe
1.0 + 0.1, -0.3 @ 2 Hz; -0.1 4 Hz
2t04Rz
1.0 + 0.1
4 to 2000 Hz
1.O + 0.1 @ 2 KHz 1.0 KHZ
2KHzto7mz
the input
The accelerometer used to measure
to the baseplate of
b. Accelerometer.
shock to the FCC-FTS shall be irigidly stud normally supplied or by
us ng the attached
the FCC-FTS s~ck fixture,
910 or dental adhesives. The
cementing in place using Eastman as close as possible acceleraeter
The to the
shall be positioned
acceleraeter
attachment points of the FCC-FTS to the nfixture. (30 KHz
tha 14 KHz
higher is
For suitable low frequency
resonant frequency shall be greater
and load (cathode - follower, amplifier,
recommended) for piez0-electrlc types.
response~ the accelerometer
the following characteristics:
or other) shall have
50
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