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|  MIL-D-81347C(AS)
Armament Output Logic
3.5.2.4.4
Functional Description - The Armament Output Logic (AOL) is
3.5.2.4.4.1
the interface between the computer and the Aircraft Armament System. The AOL shall receive and
decode commands from the computer and transmit commands to the Aircraft Armament System. The
AOL shall allow the computer to control the arming, rocket selection, and selection and launching of
the weapon stations.
Figure 67 is a Functional Flow Diagram of the AOL. Figure 77
is a timing diagram.
General Description - The AOL shall perform the following
3.5.2.4.4.2
functions:
(1) Upon computer command: arm nose, arm tail, arm nose and
tall, or disarm for either wing or bomb bay weapon stations independently.
Upon computer command select rocket ripple, rocket single,
(2)
or hook transfer controls.
Upon computer command select one of 18 weapon stations
(3)
for either weapon release or rocket launch.
(4)
Detect and transmit to the AOIL the following errors:
(a) Input word structure is improper (i.e. , upper and
lower half words not identical or bits in the Ordnance Category Field and the Armament Category Field
simultaneously).
(b) Redundant status logic not in agreement.
(c) Redundant launch logic not in agreement.
(5) Camera trigger signal supplied simultaneously with the
weapon release signal.
(6) Provides the necessary cueing signals.
(7) Torpedo preset weapon station select.
3.5.2.4.4.3
O p e r a t i n g Retirements
General - Because of the critical nature of the Armament System
3.5.2.4.4.3.1
precautions shall be taken to guard against erroneous operation.
(1) The computer shall transmit a 30-bit command to the AOL
utilizing the Output Acknowledge with the constraint that bits 0 - 14 must be identical to bits 15-29.
(2) Bits 12-14 and 27-29 shall be used for Armament and/or
IFPM Category codes and bits 8-,11 and 23 - 26 shall be used for Ordnance and/or IFPM Category
codes. The Armament Category field and the Ordnance Category field shall not contain bits
simultaneously.
(3) The Armament Category codes shall be minimum distance
2 codes except that the remaining codes may be used for test modes.
(4) The AOL shall be comprised of redundant logic sections,
each operating on one half of the computer output word. No action shall be performed unless both logic
sections agree. In addition, no single error, either logic malfunction or comuter error (i.e. . one bit)
shall cause an erroneous launch operation.
141
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