emergency cutout valve provides the console operator a
positive control to prevent the launch valve from
opening during a HANGFIRE condition. When placed
in the emergency position, the cutout valve electrically
and hydraulically shifts the launch valve control system
to the closed position.
Central Junction Box
The central junction provides a single location for
the catapult control system wiring and relays. The
terminal board and all wires are clearly marked for easy
identification. Relay status lights and a relay tester aid
in troubleshooting electrical malfunctions.
Deckedge Signal Box
The deckedge signal box (fig. 4-65) is located at
flight deck level adjacent to the deckedge control panel.
Its function is to indicate the readiness of the catapult to
the launching officer during operations.
Water Brake Control Panel
The water brake control panel (see fig. 4-59) is
located in the water brake pump room. In the event of
an emergency or malfunction of the water brakes, a
switch on the panel is used to suspend catapult
operations and it is further protection for personnel
when access to the launching engine cylinders or water
brake cylinder is required.
Main Control Console (CV-63)
The main control console (fig. 4-66) is used in
conjunction with the deckedge control panel during
catapult operation. The control console consists of an
operating panel, an emergency panel, a malfunction
panel, two gauge panels, a launch valve cutout valve,
and the transfer switch enclosure.
OPERATING PANEL.The operating panel is
used in conjunction with the deckedge panel during
push buttons, and switches that are used for catapult
control during the launching sequence.
EMERGENCY PANEL.The emergency panel
contains all the lights, push buttons, and switches are
required to provide complete control during the
launching, retraction, and bridle tensioning phases.
STEAM GAUGE PANEL.The steam gauge
panel contains a steam pressure gauge, CSV setting
controls, digital endspeed indicator and launch valve
GAUGE PANEL.The gauge panel provides a
means of monitoring steam and hydraulic temperature
MALFUNCTION PANEL.The malfunction
panel contains lights that indicate the status of certain
pressure and the valve position malfunction lights are
Figure 4-65.Deckedge signal box.