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horizontal plane. In the TLN basic mode, it furnishes
information on the position of waypoints, tacan stations,
and destination points with respect to the aircraft that is
at the display center. The distance scale from the aircraft
symbol to the inner edge of the compass rose can be set
at 200, 100, 50, 25, or 10 miles. Numeric displays of
range, bearing, and time-to-go to a selected waypoint
and to a selected tacan station are provided.
In addition to the information shown in Figure 20-9,
other HSD formats provide two tacan steering displays
as well as data-link, destination, and manual steering
displays (see paragraph 20.3.6.5, Display Steering
Modes).
20.2.1.5 Navigation Data DisplaySummary.
Figure 20-10 summarizes the navigation data available
on HUD and MFD formats.
20.3 NAVIGATION SYSTEM OPERATION
Proceduresfo r operationalu se of the navigation system
are.p rovided in the paragraphsth at follow including
display formats and control selections for alignment,
data initialization, m-flight navigation, sensor selection,
degraded mode operation, and tactical navigation. Tactical
navigation includes position updating, surface
waypoint position determination, range and bearing to
selected waypoints, display steering, autopilot steering,
and AWL aircrafi control. These procedures are normally
performed in the TLN mode; however navigation
outputs are available to other aircraft functions and displays
in all modes.
20.3.1 INS and SAHRS Concurrent Allgnment.
In all modes of concurrent alignment, both the
INS and the SAHRS are aligned in the mode selected on
the NAV MODE switch (Figure 20-2). The system will
always align to WPT 1 unless manual entries are made.
Normal operation of the MCS and MFD is required for
any alignment.
20.3.1.1 Normal Concurrent Ground Alignment
1. Select own-aircmfth@D format, (Figure20-8) by
depressing “DATA” pushtile on the MFD
MENU1 page (Figure 20-l 1).
2. Verify displayed latitude and longitude. If incorrect,
enterc orrect coordinatesv ia the DEU or DD.
For DEU data entry, the DEU OWN A/C page is
selected and the latitude and longitude coordinates
may be entered to 0.01 arc minute using the LAT
and LONG pushtiles and the proper hemisphere
numerals (Figure 20-12). On the DEU, longitude
entries less than 100’ require a 0 be entered prior
to the value. For DD data entry the DD control
panel is used with the NAV category selected using
the MFK pushtile (I%gure 20-13). The OWN
A/C acronym is then boxed by depressingt he corresponding
pushtile and the coordinates are entered
via the LAT, LONG, hemisphere, and
numeric pushtiles shown on the computer address
panel on the lower left portion of the DD control
panel. Latitude and longitude coordinates may be
entered via the DD to the nearest 0.1 arc minute.
Longitude entries on the DD below 100’ do not
require a 0 prior to entering the numerals.
3. Verify parking brake is set.
4. Set NAV MODE switch to GND. The OWN A/C
GRND format will be displayed on the MFD (Figure
20-14).
ORIGINAL 20-14
NAVAIR Ol-Fl4AAD-l
TLN BASIC
LEGEND
Figure 20-7. h4FD VDI (TLN Basic) Navigation Outputs
20.15 ORIGINAL
NAVAIR 01-Fl4AAD-1
Figure 20-8. Own-Aircraft Basic Data Format
I
ORIGINAL 20-16
NAVAIR 01.F14AAD-1
03 MAGNETIC HEADlNG
04 ADF BEARING POINTER
05 SELECTED COURSE
g WAYPOINTSYMB~L
7 SELECTEDCOURSEREADOUT
09 COMPASS ROSE RANGE SCALE
g SELECTED HEADING READOUT
10 INSISAHRS HEADING SOURCE INDlCATlON
g SELECTED WAYPOINT
12 DESTINATION BEARING
013 SELECTED WAYPOINT DATA
@ TIME-TO-GO
COMMANDED HEADING (DESTINATION MANUAL
AND DATA LINK), SELECTED HEADING (TACAN)
DESTlNATlON WAYPOINT
g GROUND SPEED
17 TRUE AIRSPEED
(ATj2-FSOM14-0
Figure 20-9. MFD HSD Format-Navigation Outputs
20-17 ORIGINAL
NAVAIR 0%F14AAD-1
_D.I-S.P LN_ I NAVIGATION DATA DISPLAYED
Own Aircraft lnflight Latitude
Longitude
Altitude
Barometric Setting
Magnetic Variation
Wind Direction/Speed
True Airspeed
Groundspeed
True Heading
Navigation Quality
Own Aircraft Ground Align Latitude
Longitude
Altitude
Barometric Setting
Magnetic Variation
Groundspeed
True Heading
Align Time/Quality
North/East Velocities
Aircraft Carrier (CV) Alignment Latitude
Longitude
Magnetic Variation
CV Speed
CV Heading
Vertical Lever Arm
Align TlmelQuality
SAHRS Alignment Latitude
　
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