traveling. This information is provided to the data
converter unit (DCU) where it is checked against
calibration curves designed to reflect terrain
characteristics. The output from the DCU is sent to
the engineer AMS display and to the analog speed
and sideslip indicator on the operator console.
The sideslip analog indication is displayed on the
operator console as a left or right bar movement. (See
fig. 6-17.) The bar movement has zero degrees at the
center and a maximum travel of 60 to the left and
right. The sideslip indication on the engineer AMS
display is a digital numeric readout, with alpha
characters showing PORT and STARBOARD.
LCAC ELECTRICAL SYSTEM
In this chapter, we will give you an
overview of the LCAC's electrical system. In
chapter 7, we will discuss the electric plant in
greater detail.
The electrical power generation for the LCAC
provides alternating and direct current requirements
for power and lighting loads on the craft. The APU
system, generator set, and its associated auxiliary
control equipment are responsible for the generation
Figure 6-16.--Outside air temperature probe
of 120/208-V ac, 60-kW, 400-Hz, 3-phase power. The
installation.
craft is organized into primary and secondary power
distribution. Power is distributed over a common,
redundant bus system in a manner that affords
SPEED/SIDESLIP INDICATOR
maximum protection from battle damage and
equipment failure. Primary power consists of the
The speed and sideslip indication is generated by
craft generator 400-Hz ac power and the external
the high-speed velocity log (HSVL). The HSVL
shore 400-Hz ac power systems. Secondary power
system develops craft speed and sideslip (drift) angle
consists of the transformer rectifier unit (TRU) 28-
data relative to the surface on which the craft is
V
dc
power
system,
the
emergency
Figure 6-17.--Operator station sideslip indicator.