MIL-B-21518A (Wep)
Test and Inspection Equipment and Facilities -
4.5.3
The manufacturer shall furnish and maintain all necessary
test equipment, facilities, and personnel for performing
The test equipment shall be adequate
all production tests.
in quantity and, unless definite requirements are specified~
shall be of sufficient accuracy and quality to permit per-
formance of the required production tests.
Test Procedure
4.5.4
4.5.4.1
Materials and Dimensions - Each flexible-bellows
assembly shall be inspected for conformance to the require-
ments Of 3.2.2.
Hydrostatic Pressure Test - Each flexible-
4.5.4.2
bellows assembly, mounted in a test fixture which duplicates
mating launcher tube and ship configuration, shall be sub-
jected to an internal hydrostatic proof pressure of 195-205
psig for 10 minutes to meet the requirements of 3.3.1.
Deflection Test - each flexible-bellows assem-
4.5.4.3
bly, mounted in a test fixture with the ends 9 inches apart
and fixed axially in lines shall. be visually examined for
conformance to the requirement of 3.3.3.
4.6
Preproduction Tests
Hydrostatic Pressure, Rapid Application Test -
4.6.1
One flexible-bellows assembly, mounted in a test fixture
which duplicates mating launcher tube and ship configuration,
shall be subjected to an internal hydrostatic proof pressure
increased from 0 to 195-205 psig within 5 seconds and main-
tained for 10 minutes to meet the requirements of 3.3.1.
Operating Life and Flexure Test - One flexible-
4.6.2
bellows assembly, mounted in a suitable test fixture, shall
be subjected to 150 cycles of axial flexure and 150 cycles
of lateral flexure, at the rate of 1 cycle-per-minute, to
meet the requirements of 3.3.2.
Submersion Test - To meet the requirement
4.6.3
of 3.4.2, one internal surface of the flexible-bellows
assembly shall be subjected to submersion in sea water for
90 consecutive days with a temperature of 65 � 20 degrees
Fahrenheit for 88 days and with temperatures between +28
and +32 degrees Fahrenheit for 2 days.
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