MIL-C-38983A
4.5.11 Impact shock. Cartridge samples shall be dropped from a height of 8 feet onto a steel plate
supported by concrete. Four cartridges shall impact nose down, four nose up, and four horizontally. These
cartridges shall meet ballistic requirements when tested. Three cartridges shall be dropped 40 feet and land
in any orientation. It is not required that the cartridges be usable after the drop test, but no cartridges are to
fire during the test. Cartridges must be safe to handle and to dispose of after the test.
4.5.12 Temperature and humidity cycling. Cartridge sample shall be subjected to this test in accordance
with MIL-D-81303.
4.5.13 Post environmental inspection. After the environmental test, the subjected cartridges shall be x-
rayed, leak tested, resistance checked, and ballistically tested. Evidence of any disintegration of the ignition
element, igniter, propellant, or derangement of any component or failure to meet bridge circuit resistance
requirements shall be cause for rejection of the first article sample or the lot represented.
4.5.14 Ballistic tests. The test sample for ballistic testing shall be split into three equal groups for testing
in accordance with table I. Cartridges subjected to environmental tests shall be conditioned and fired at +70·
F. The cartridges shall be conditioned a minimum of 4 hours but less than 16 hours and fired in a Navy
approved test fixture simulating the BDU-38/B Practice Bomb. Each cartridge shall be fired within 3 minutes
after removal from conditioning. A record of velocity, stroke distances, ignition time, firing current, and firing
voltage shall be taken with suitable instrumentation for each firing.
4.5.14.1 Criteria of Acceptability. The cartridge shall function and meet the requirements of 3.4.14.
4.6 Retest. There shall be no retests unless otherwise directed by the contracting officer.
4.7 Test conditions.
4.7.1 Standard conditions. Test conditions shall be as specified for each test given in section 4. If no
conditions are stated, the following shall apply:
a. Temperature 21· ± 11· C (70· ± 20· F)
b. Relative humidity 90 percent or less
4.7.2 Test measurements.
4.7.2.1 Instruments. All measurements shall be made with instruments whose accuracy has been verified.
All instruments and gages shall be calibrated and maintained in accordance with MIL-STD-45662.
4.7.2.2 Tolerances. The maximum allowable error on test condition instruments and measurements shall
be as follows:
a.
Temperature
± 2.78· C (5· F)
b.
Relative humidity
± 5 percent
c.
Vibration and shock amplitude
± 5 percent
d.
Vibration frequency
± 5 percent
e.
Current
± 1 percent
f.
Resistance
± 1 percent
11
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business