operation. For example, the computer may cue the
operator to turn on the bomb bay door switch and the
master arm switch. The P-C3 computer also uses the
ordnance panel to instruct the ordnance crew member
on how to perform certain pressurized SLT loading or
unloading operations (exchange between storage rack
and SLTs). This enables the ordnance crew member
to make available the search store requested by the
TACCO.
5. Present the operator with alternatives for
which decisions are required; for example, arming has
three selections (nose, tail, or both). The computer
also furnishes alerts, such as components or circuit
failures and selections errors, to bring important
developments to the operators attention.
6. Calculate and initiate fly-to-point store
releases, intervals between releases for train releases,
and furnish system release commands in response to
crew member release commands.
7. Secure the system following each weapon
release, check store-in-place status, update the
inventory, and prepare the system for the next store
selection.
MANUAL MODE. In the P-C3, the manual
mode provides the TACCO with management
control of all kill and search stores. In the S-3A,
each crew member controls kill and search stores
under the management of the pilot and TACCO
conjunctival y.
In the manual mode, the P-C3 TACCO/S-3A pilot
selects the bomb bay or wing station for release, along
with the arming and release mode of the selected
store. These actions are executed by the control on
the weapons control panel. If required, the pilot is
cued to turn on the master arm switch and open the
bomb bay doors.
When the station, arming, and release modes in
the P-C3 have been selected, the master arm power
will be on, the bomb bay doors will open (if
required), and the kill ready lights on the ACP and
TACCO manual weapons control panel will
illuminate. If the selected station is loaded, the
station select keys on the ACP will light amber
(S-3A). The store may then be released by the pilot,
copilot, or TACCO (also the SENSO in the S-3A)
by use of their release switches.
The P-C3 search store release and control in the
manual mode is completed by the ordnance crew
member using the controls on the search stores
interconnection box. The desired SLT is selected by
using the letter and number switches. This cues the
pilot to turn on the search power switch. When the
SLT has been selected and search power is on, a
launch is effected by actuating the sono launch switch
on the search stores interconnection box.
Jettison
Store jettison of both aircraft is somewhat similar
in operation and control. Manual actuation of the
jettison or the external jettison switch by the pilot
disables the arming circuit and initiates jettison.
In the P-C3, the jettison programmer is
energized and sends sequential release and bomb
bay door open/close signals. Wing stations are
released in pairs (one from each wing) from
outboard stations to inboard stations at 2-second
intervals. At this same time, the bomb bay doors
are opening. Then, the lower stations are released,
the upper stations release after the lower stations,
and then the doors are closed.
A separate switch on the pilots console initiates
the jettison function for wing stations only. Selective
jettison from any station may be accomplished
through normal manual release with the arming select
(TACCO weapons panel) set on safe.
In the S-3A, the wings and SLTs receive jettison
commands from the wing and search store decoders to
release all wing stores and 59 SLTs. The SAR chute
remains loaded.
Bomb bay stores, wing stores only, and wing
stores from auxiliary devices (such as flare launchers)
are released by using the ACP AUX rotary switch.
This is done according to the load to be jettisoned. In
this situation, the mechanical arm thumb-wheel
selector must be set to safe, and the arm set switch
depressed. Armed store releases may also be initiated
in the above reamer.
When the aircraft is on the ground, the jettison
circuits of both aircraft are disabled by the
weight-on-wheels switches. These switches are
located on the right and left main landing gear (main
mounts).
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