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MIL-R-81939B(AS)
High-g release. This test shall be conducted with the following conditions:
4.6.7.4
355.6 millimeter (14 inch) suspension - Perform 12 ejections with the applied load based on a
a.
657,72 kilogram (1,450 pound) store, and one release utilizing the auxiliary release assembly.
762 millimeter (30 inch) suspension - Perform 13 ejections with the applied load based on a
b.
1,621.62 kilogram (3,575 pound) store, and two releases utilizing the auxiliary release
assembly.
Sand test. When testing Type II bomb racks the IFOBRL shall be in the "lock"
4.6.7.6
position prior to sand exposure. The IFOBRL shall be operated electrically during operation of the bomb
rack. The electric fuze arming unit shall not be tested for Type I and Type III bomb racks.
Salt spray. The minimum operating voltage shall be as defined herein (see 4.6.7.2).
4.6.7.6
When testing Type II bomb racks the IFOBRL shall be electrically operated to the "lock" position prior
to the salt spray conditioning.
Vibration. The electric fuze arming unit vibration test shall not be conducted. The
4.6.7.7
minimum weight store used shall be 113.4 kilograms (250 pounds) for the 355.6 millimeter (14 inch) hooks
and the maximum weight store used shall be 453.6 kilograms (1,000 pounds) for the 762 millimeter (30
inch) hooks. When testing Type II bomb racks, the IFOBRL shall be operated electrically for all tests. The
IFOBRL shall be in the "unlock" position during unloaded vibration and in the "lock" position during
loaded vibration.
Shock test. Light load tests shall be conducted with a 113.4 kilogram (250 pound) store
4.6.7.8
(see 4.6.7.7) for the 355.6 millimeter (14 inch) hooks. Yield and ultimate load tests shall be conducted with
a 1,621.62 kilogram (3,575 pound) store for the 762 millimeter (30 inch) hooks. Applied shock amplitudes
for yield shock tests shall be based on the limit shock loads given in Table IV. Yield shock loads are 1.15
times the values shown in Table IV. When testing Type II bomb racks, the IFOBRL shall have been
locked prior to each applied shock.
TABLE IV
APPLIED SHOCK LOADS
APPLIED SHOCK LIMIT
APPLIED SHOCK LIGHT
LOAD (g's) FOR 1,621.6 KG.
LOAD (g's) FOR 113.4 KG.
(3,575 LB.) STORE
DIRECTION
(250 LB.) STORE
6.05
Vertical Down
25
3.30
Vertical Up
25
7.70
25
Longitudinal Forward
7.70
25
Longitudinal Aft
2.20
25
Transverse Port
25
2.20
Transverse Starboard
12

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