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|  MIL-W-70467 (AR)
Prior to performing this test, the following is necessary:
a.
Serialize each round.
b. X-ray or fluoroscope each round in two planes 90 apart.
Verify all components are secure and the S&A is in the unarmed
position.
Following the vibration test, each round shall be x-rayed or
fluoroscoped. A visual examination shall be performed. The first
article shall be rejected if one or more warheads are found to be
not safe as a result of the effects of the secured cargo vibration
test.
If no safety hazard is noted, the warheads shall be ballistically
tested in accordance with 4.5.12.
4.5.9 Helicopter vibration test. The helicopter vibration test
shall be performed as follows on each of nineteen (19) warheads for
first article testing only.
a. Sweep test. Warheads with inert motors shall be loaded into
a light weight launcher and subjected to a low level sweep test.
The loaded launchers will be tested in each of three orthogonal
axes. The sweep level will be 1/2 G or lower as necessary to limit
the maximum response of the launchers to the Table II levels. This
test will define the dynamic resonances of the system, as mounted on
a vibration shaker.
b. Dwell test. Following the sweep tests, warheads with inert
motors loaded in a launcher shall be subjected to vibration
excitation in each of the three orthogonal axes. The test shall be
conducted at each of four principal frequencies 11, 22, 33, and 44
Hz. The input levels at each frequency will be such as to provide
the launcher response levels as specified in Table III for the time
durations indicated. The test method to be used is the random noise
method limited to the frequency range of interest.
Prior to performing the helicopter vibration test, x-ray or
fluoroscope each round in two planes, 900 Opposed, to verify that
all components are secure and the S&A is in the unarmed position.
After performing the test on all warheads, each round shall be
x-rayed or fluoroscoped. A visual examination shall be performed.
The first article shall be rejected if one or more warheads are
found to be not safe as a result of the effects of the helicopter
vibration test. If no safety hazard is noted, the warheads shall be
ballistically tested in accordance with 4.5.12.
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