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Page Title:
Electromechanical component inspection, Type II bomb rack. |
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| MIL-R-81939B(AS)
The 907.2 kilogram (2,000 pound) store shall utilize applicable suspension lugs,spaced
3.
762 millimeters (30 inches) apart. Its center of gravity shall be based on the MK.84
G.P. bomb.
4.
The 1,621.62 kilogram (3,575 pound) store shall utilize applicable suspension lugs
spaced 762 millimeters (30 inches) apart. Its center of gravity shall be midway between
the suspension lugs and 203.2 millimeters (8 inches) below the hook bearing surface of
each suspension lug.
e.
Ejector assembly, Unless otherwise specified, the ejector assembly shall be installed in
position A for 355.6 mi1limeter (14inch) suspension and position B for 762 mil1imeter (30
inch) suspension.
f.
Input power requirements. The bomb rack shall perform satisfactorily under all applicable
conditions specified herein from a 28 VDC rated voltage power source with characteristics
and limits as defined in MIL-STD-704, except that the bomb rack shall operate over a
range of 20 to 30 VDC, measured at the bomb rack's input connector(s).
Inspection methods.
4.6
Electromechanical component inspection, Type II bomb rack. The following inspection
4.6.1
shall be made during (when applicable) and after each of the tests conducted on the bomb rack as specified
in Tables I and II, with the exception of 4.6.4 and 4.6.5.
a.
The Electromechanical Linear Actuator Assembly (In Flight Operable Bomb Rack Lock),
hereinafter referred to as the IFOBRL, shall be electrically locked after cocking the linkage
assembly of the bomb rack, unless otherwise specified herein. Unless otherwise specified, the
IFOBRL shall be electrically unlocked just prior to each release of the linkage assembly,
with or without a store suspended from the bomb rack, The lFOBRL shall complete full
travel (lock-to-unlock or unlock-to-lock) in 2.2 to 4.5 seconds when operated electrically
(20-30 VDC). This requirement is applicable to all environmental conditions specified herein.
Proper operation of electrical and mechanical position indicators of the IFOBRL shall be
verified for each cycle.
Proper operation of the auxiliary unlock assembly indicator switch, which indicates actua-
b.
tion of auxiliary unlock assembly, shall be verified.
Bomb rack inspection. The bomb rack shall be inspected as follows:
4.6.2
Individual inspections. Each bomb rack shall be inspected to ensure that it has been
4.6.2.1
properly assembled and adjusted, that the electrical connections are secure and that the workmanship is as
specified herein (see 3.8).
First article and quality conformance inspections.
4.6.2.2
a.
Each bomb rack shall be thoroughly. examined to determine conformance to all of the
requirements specified herein (see 3.5.1).
b.
The bomb racks shall be examined to ascertain that the packaging conforms to the contract
requirements (see 5).
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