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|  MIL-B-48447A(AR)
AMENDMENT 2
17 June 1991
SUPERSEDING
AMENDMENT 1
15 October 1979
MILITARY
SPECIFICATION
BODY ASSEMBLY: 11744900
(PERISCOPE M35E1)
This amendment forms a part of Military Specifications
MIL-B-48447A(MU), dated 15 March 1976, and is approved
for use by the U.S. Army Armament, Munitions, and Chemical
Command, and is available for use by all Departments and
Agencies of the Department of Defense.
PAGE 2
3.4.3, Delete and substitute:
3.4.3 Vibration "A". Vibration shall be applied along each of
the three mutually perpendicular axes of the body assembly. The
vibration shall be sinusoidal as follows:
a. At a frequency of 5 Hertz (Hz), the acceleration shall be
.5
G + 10%.
b. During a frequency sweep of 5 to 9 Hz, increase acceleration
linearly from .5 G to 1.5 G's + 10%.
c. During a frequency sweep of 9 to 500 Hz, maintain constant
acceleration of 1.5 G's + 10%.
d. During a frequency sweep of 500 to 9 Hz, maintain constant
acceleration of 1.5 G's + 10%.
e. During a frequency sweep of 9 to 5 Hz, decrease acceleration
linearly from 1.5 G's to .5 G + 10%.
f. At 5 Hz, the acceleration shall be .5 G + 10%.
The frequency of applied vibration shall be swept logarithmically
in 15 minutes + 1 minute sweep cycles for a total of two hours per
axis. The body assembly shall shown no evidence of physical
failure subsequent to vibration. Following the vibration test the
body assembly shall meet the requirements of 3.2 and 3.5 through
3.17.4 inclusive."
10F3
AMSC N/A
FSC 1240
Distribution Statement A. Approved for public release; distribution
is unlimited.
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