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Page Title:
Bomb rack preservation and packaging |
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|  MIL-R-81939B(AS)
4.6.7.9
Life test. This test shall be conducted in accordance with the life test for explosive
items. A 113.4 kilogram (250 pound) store, for the 355.6 millimeter (14 inch) hooks, shall be used for light
store ejections. A 1,621.62 kilogram (3,575 pound) store, for the 762 millimeter (30 inch) hooks, shall be
used for heavy store ejections.
Static test. This test shall be conducted with the following conditions. The bomb rack
4.6.7.10
shall be loaded to limit, yield and ultimate loads. Yield loads shall be 1.15 times and ultimate loads 1.5
times the limit loads given in Table V. The combined loads and moments shall be applied to a rigid
simulated store of negligible weight (90.72 kilograms, 200 pounds maximum) in accordance with Table V
such that they act at the store center of gravity. The set of swaybraces not in use shall be locked in place
6.35 millimeter (0.250 inch) minimum above the store surface prior to each test. When testing a Type II
bomb rack, the IFOBRL shall be electrically locked after cocking the bomb rack, prior to installing the
simulated store.
Lock shut firing. The bomb rack shall retain the store after the following test. There
4.6.8
shall be no damage to the bomb rack, except for the relief valve assembly of the ejector unit.
Type I and Type III bomb racks. The test shall be conducted as follows:
4.6.8.1
a.
Load the ejector assembly with two applicable impulse cartridges as specified by the
procuring activity (see 6.2.11).
b.
Cock the bomb rack and place the safety pin in the safety pin hole.
c.
Suspend a 1,621.62 kilogram (3,575 pound) store from the 762 millimeter (30 inch) hooks.
d.
Ignite the impulse cartridges using 28 VDC.
Type II bomb rack. The test shall be conducted as follows:
4.6.8.2
a.
Repeat 4.6.8.1a.
b.
Cock the bomb rack and electrically or manually operate the IFOBRL to the "lock".
position.
c.
Repeat 4.6.8.1c.
d.
Ignite the impulse cartridges using 28 VDC.
PACKAGING
5.
Bomb rack preservation and packaging. Preservation and packaging shall be in ac-
5.1
cordance with Level A, B or C as specified in MIL-STD-794, as specified in the contract, without the use
of preservation compound.
Packing. Shipping containers shall contain one each packaged bomb rack. The con-
5.2
tainer shall be suitable for Level A, B or C as specified in MIL-STD-794.
Unitized loading. Unitized loading for the bomb racks is authorized as specified in
6.3
MIL-STD-794.
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