FFG EXHAUST DUCT SYSTEM
The FFG exhaust (uptake) system (fig. 2-18)
conducts the GTE combustion exhaust gases and
the enclosure exhaust air to the atmosphere.
The exhaust trunk extends from the exhaust
expansion joint at the enclosure, up through
the ship. It terminates in the atmosphere above
the top of the stack. The enclosure cooling
air exhaust is drawn into the exhaust trunk
through an eductor effect, explained previously.
An RTE is mounted in the exhaust trunk. It
provides a signal to the propulsion control system
for the demand display of the exhaust temperature
Figure 2-17.--CG exhaust eductor.
at the PCC.
Figure 2-18.--FFG exhaust system.
2-16
