MIL-DTL-82909A (OS)
FIGURE 3. Gunfire vibration test levels.
TABLE VII. Gunfire vibration test schedule.
Test Times in Minutes per Axis
Number of Resonances
0
1
2
3
Sweep Time
30.00
22.50
15.00
7.50
Resonance Dwell Time
-
7.50
15.00
22.50
Fixed Dwells1/ at the following center frequencies:
fd =
67 Hz
7.50
7.50
7.50
7.50
100 Hz
7.50
7.50
7.50
7.50
135 Hz
7.50
7.50
7.50
7.50
200 Hz
15.00
15.00
15.00
15.00
267 Hz
7.50
7.50
7.50
7.50
300 Hz
7.50
7.50
7.50
7.50
335 Hz
7.50
7.50
7.50
7.50
400 Hz
15.00
15.00
15.00
15.00
467 Hz
7.50
7.50
7.50
7.50
500 Hz
7.50
7.50
7.50
7.50
Total Time Each Axis
120.00
120.00
120.00
120.00
1/ When the battery pack resonance occurs within 5 percent of a fixed dwell frequency, the fixed period
shall be omitted and only the resonance dwell performed. The omitted fixed dwell shall then be added to
the sweep time.
15
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