MIL-DTL-6396F
length in the actual aircraft installation from the tank to the first support. (For testing of tanks
which incorporate reticulated foam or similar materials, see 4.5.6.1.8.) The test specimen shall
be filled two-thirds full with water and simultaneously slosh and vibration tested in accordance
with applicable conditions specified in 4.5.6.1. The temperature of the test fluid shall be as
specified in table IV. This test shall be conducted with the test specimen subjected to a pressure
equivalent to the maximum operating pressure encountered in any prescribed flight conditions.
At the conclusion of this test, the test specimen shall be filled with the applicable test fluid and
thoroughly inspected for leakage or other evidence of failure such as sagged panels or buckled
plates which shall be cause for rejection.
4.5.6.1.7 Type II, Class C and Type III tanks. The test tank, complete with all caps, vents,
gages, fittings, and other parts or accessories that will be mounted on or in an aircraft, shall be
mounted in the support jig and installed on the vibrator and rocker assembly. In addition, all
lines attached to the tank in the actual aircraft installation shall be included. The minimum
length of these lines shall be that length in the actual aircraft installation from the tank to the first
support. The interior or each compartment shall be completely lined with brown paper and held
in place with a suitable adhesive. (For testing the tanks which incorporate reticulated foam or
similar materials, see 4.5.6.1.8.) The test specimen shall be filled two-thirds full with the
applicable test fluid containing a suitable dye. The tank shall be simultaneously slosh and
vibration tested in accordance with the applicable conditions specified in 4.5.6.1. The
temperature of the test fluid shall be 135 ±10 °F (57 ±6 °C). This test shall be conducted with
the test specimen subjected to a pressure equivalent to the maximum operating pressure
encountered in any prescribed flight conditions. At the conclusion of this test, the test specimen
shall be filled with the applicable test fluid as specified in 4.4.1 and table IV and thoroughly
inspected for leakage or other evidence of failure.
4.5.6.1.8 Special baffling materials. Tanks incorporating reticulated foam or similar
materials for fire and explosion protection shall have the material removed during the slosh,
vibration, or slosh and vibration tests described herein. If deemed necessary by the procuring
activity, a second slosh test with the foam installed shall be conducted.
4.5.6.2 Test duration. Unless otherwise specified by the procuring activity, test duration and
procedure shall be:
a. Vibrate for 25 hours at 16 to 20 slosh cycles per minute (cpm); or
b. Vibrate for 25 hours at 10 to 16 slosh cpm with 15 hours of additional slosh at
10 to 16 slosh cpm.
4.5.7 Vibration (Type I and III tanks only). A tank shall be tested in accordance with the
procedure specified in 4.5.6.1.6 or 4.5.6.1.7, as applicable, except:
a. The tank shall not be sloshed.
17
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business