MIL-C-70590B (AR)
3.2 Components and assemblies. The components and assemblies
shall comply with all requirements specified on Drawing 9361261, all
associated drawings, and with all requirements specified in
applicable specifications and standards. Where applicable, the
test set shall meet the requirements of MIL-F-13926 as follows:
a.
Dimensions and tolerances.
b.
Inorganic protective surface finishings.
c.
Part identification and marking.
Workmanship.
d.
3.3 Environmental service conditions.
3.3.1 Vibration. The test set shall not suffer damage and
shall meet the requirements of 3.4 and 3.5 after exposure to
sinusoidal vibrations, in each of three mutually perpendicular axes,
as follows:
Frequ ency Range
Amplitude
10 to 15 hertz
0.06 inches double amplitude
15 to 25 hertz
0.04 inches double amplitude
25 to 55 hertz
0.02 inches double amplitude
frequency of vibration shall be swept logari thmic ally.
The
The
cycling t ime shall be 1 20 minutes per axis.
The
sweep rat e shall be 3. 7 5 minutes
10% per d ecade.
10-55-10 hertz sweep t ime is 3 minutes 45 seconds
The
10%.
3.3.2 Shock. The test set shall not suffer damage and shall
meet the requirements of 3.4 and 3.5 after exposure to a total of 18
impulse shocks consisting of three shock impulses of 15 g's
10%,
11 milliseconds
10%, half-sine wave applied in each direction of 3
mutually perpendicular axes.
3.3.3 Altitude.
3.3.3.1 Operating. The test set shall meet the requirements of
3.4 and 3.5 during and after exposure to barometric pressure
encountered at 10,000 feet above sea level (20.6 inches of Hg).
3.3.3.2 Non-operating. The test set shall meet the
requirements of 3.4 and 3.5 after exposure for not less than 10
minutes to barometric pressure encountered at 40,000 feet above sea
level (5.5 inches of Hg).
3.3.4 Temperature.
3.3.4.1 Operating. The test set shall meet the requirements of
3.4 and 3.5 when stabilized thermally at any temperature between -40
deg F and +155 deg F.
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