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default format, is used to select the steering mode. When
any steering mode (all weather landing, tacan, destination,
data link, or manual) is selected, formats on both
the HUD and MFD change to accommodate the selection.
These other VDI TLN formats have pushbutton
selections to change the steering mode. When steering
is selected, a heading command scale is added as well
as steering aids such as steering vectors, indicators,
range, and breakaway symbols. There is one level of
declutter on VDI formats that adds a waterline symbol
and removes information such as airspeed, altitude,
barometric pressure setting, etc. Figure 2-108 identifies
and describes TLN symbol functions in various steering
and tracking modes. The last example in Figure 2-108
illustrates VDI declutter. Refer to Figure 2-108 for a
listing of symbols available on VDI TLN formats in
normal and declutter modes.
2.33.9.42 VDI Air-to-Air (WA) Formats. With A/A
selectedo nt he PDCP (A/A MODE buttond epressedo),n e
of a numbero f VDI A/A formatsw ill appeawr henV DI is
selectedo n au MFD Tim the MENU1 or RECON DATA
format The actual format that is presentedd ependso n
which weapon has been selected. With no weapon selected,
t he A/A basic format is presentedM. ost symbols
are common between VDI formats and have been shown
in Figure 2-109. Figure 2-110 describesa dditionalt atget
symbology and data that is provided in VDI A/A formats.
Unlike HUD A/A formats that have unique search
symbols depending on weapon selection, all VDI A/A
search formats are identical except for the weapon select
legends. VDI basic, gun, and missile track formats add
a steering “T,” range bar, and target aspect symbols as
well as target range, altitude, and closing velocity and
DD selected range digital information. The missile
tracking formats also add maximum, optimum, and
minimum range symbols to the range bar and an allowable
steering error circle. Figure 2-111 lists the symbols
available on VDI A/A formats.
2.33.9.4.3 VDI Air-to-Ground (A/G) Formats.
When MI is selected from the MENU1 or RECON
DATA format with the A/G MODE button on the PDCP
selected,t hat MFD displays the VDI A/G format. Unliie
HUD A/G formats, the VDI A/G format does not have
target, aiming, gun, or pulhtp information, nor does it
have any unique VDI symbols other than the A/G select
legend. Figure 2-111 shows the A/G symbol set and
Figure 2-112 shows the format.
Note
In A/G mode the basic VDI symbology and
format will generally be the same as TLN
with the following differences: (1) selection
of manual, tacan, and all-weather landing
steering modes will not be provided; (2) the
waterline reference dot and the heading and
course select settings will not be displayed;
and (3) the pitch/flightpath ladder will be
compressed and modified.
2.33.9.4.4 VDI Overlay Formats. The MFD VDI
overlay formats are track while scan (TWS), infrared
search and tracking system-TWS (IRSTS-TWS), and
reconnaissance.
ORIGINAL 2-199
NAVAIR Ql-F14AAD.1
TLN BASIC
Figure Z-108. MFD Ml Farmats - ‘kk&f, Ladng,g,Navigstion (Sheet 1 of 9)
2-199 ORIGINAL
NAVAIR 0%F14AAD-I
SYMBOL FUNCTION
0
Heading scale Aircraft magnetic heading is indicated by the moving 360” heading scale.
In TLN, the major divisions are numbered every 10 degrees.
0
Heading pointer Actual aircraft heading is displayed below the stationary heading pointer.
@ Pitch/flight path ladder Ladder displays aircraft climb/dive angle and roll angle. Aircraft vertical
flight path angle is indicated by the position of the flight path marker on the
pitch/flight path ladder. Positive pitch lines are solid and negative pitch
lines are dashed. To aid in determining flight path angle when it is
changing rapidly, the pitch lines are angled toward the horizon at an angle
half that of the flight path angle. For example, in a 40” climb, the pitch lines
are angled 20” toward the horizon. UP appears at +90” and DOWN
appears at -90”.
@
Radar altitude indicator Displays radar altitude when the aircraft is below 5,000 ft AGL. When radar
altitude is selected for display on the HUD and MFD (via the switch located
on the pilot display control panel) the radar altitude indicator will be
decluttered from the display.
0
Vertical velocity Displays aircraft rate of climb/descent. Descent will be indicated by a
negative (-) sign.
@) Altitude Barometric or radar altitude may be displayed depending on the source of
data. When the ALTITUDE switch is in BARO, barometric altitude is
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F-14D 飞行手册 Flight Manual 1(159)
