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Page Title:
System Operated Alternate Action Switches |
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|  MIL-D-81347C(AS)
Each of these switches shall have a signal line to the AOIL; the
Special Weapon Station Select switch has three signal lines. When the switch is operated a second time
the line will go from a logical "1" to a logical "0". The AOIL shall generate an Enter to the computer
upon either transition.
System Operated Alternate Action Switches - A system operated
3.5.2.4.3.4.8.4
alternate action switch is one that is controlled by some action of the aircraft , such as a door
opening, which activates a limit switch or a store (search or weapon) being released or loaded and
activating a "Stores-in-Place" switch. This type of switch includes the following:
(1) Bomb Bay Door Switch
(2) Ten Wing Weapon Station Stores-in- Place Switches (Detection
only on Release)
(3) Eight Bomb Bay Weapon Station Stores-in- Place Switches
(Detection on Release)
(4) Three Pressurized Sonobuoy Launcher Door Switches
(5) Two SUS Away Switches
(6) Three Bomb Bay Rack Locked Switches
These switches have the same characteristics as the manually
operated alternate action switches and again the AOIL shall generate an Enter to the computer upon
either transition except as indicated above.
SLT Stores-in-Place Status - The Interrogate Monitor line is
3.5.2.4.34.8.5
used to verify the stores inventory, i.e., that there is a Sore-in-Place where the computer program
indicates there should be one. When the computer interrogates the Interrogate Monitor line to the
AOIL, it appears as shown in Figure 90 (3.5.2.4. 5). When a Store has been selected and a
store is in place, the Interrogate Monitor line will go to a logical "1"; when a Store has been selected
but there is no Store in Place, the Interrogate Monitor line will go to a logical "O".
Aircraft Armament System Signals to Armament/Ordnance Input
3.5.2.4.3.4.8.6
Logic (Kill Stores) (Summary) - "Input Signals" from the armament kill stores and controls to the DPS
are listed below:
(1) Kill stores-in-Place Monitor - (18 signals) - Ground in-
dicates Store is in place. Otherwise open circuit. There is no Store-in-Place signal for individual
rockets or bullpup AGM-12/B.
(2) Bomb Bay Rack Unlock - (3 signals) - Ground when unlocked.
Otherwise open circuit.
(3) Master Arm Monitor - Ground when master arm switch is
on. Otherwise open circuit.
(4) Kill Stores Manual Mode Monitor - Ground when armament
kill stores selection is in auto mode. Open circuit for manual mode.
(5) Manual Torpedo Preset Monitor - Open circuit when
weapon station manually selected on torpedo preset panel. Ground for auto mode.
(6) Kill Store Release Command - Ground for weapon release.
Otherwise open circuit.
(7) Bomb Bay Door Open Monitor - Open when bomb bay door
closed or partially open. Ground circuit when bomb bay door fully open.
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