MiGMan's Flight Sim Museum < www.migman.com >
 TFX | by Digital Image Design

TFX: by Digital Image Design

HUD (Heads Up Display) from TXX, 1993

THE HEAD-UP DISPLAY UNIT (INCLUDING HELMET MOUNTED HUD)

The Head-Up Display provides important data for the pilot during all aspects of flight. It is the most important instrument you will use in TFX. The helmet-mounted HUD comes into effect when the cockpit is not shown, for example, when using the full forward view.

The HUD has three main modes as follows:

* NAVIGATION MODE

* AIR-TO-AIR MODE

* AIR-TO-GROUND MODE

It also has two sub-modes: INSTRUMENT LANDING SYSTEM and REFUEL.

To adjust the intensity of the HUD color to a comfortable setting, use the "y" key to decrease and the "u" key to increase. Note that when using the Military Specification flight model, the HUD displays extra information: an Angle of Attack indexer, a Vertical Speed Indicator and Mach number (see page 24).

NAVIGATION HUD MODE

A non-combat flight mode which provides both air-to-air or air- to-ground radar capability and a cruise control flight model. Note that the cannon becomes the only available weapon. Press the right hand Control key to select the navigation mode
HUD.

Press Enter to return to Radar.

Certain details are common to all HUD modes as follows:

AIRSPEED
In knots. Mach speed is also shown with the Military
Specification flight model.

ALTITUDE
In feet, from sea level.

ENGINE THRUST
Shows the percentage of thrust applied by your engines.

G-FORCE
The current gravity force upon you and your aircraft. The g-force indicator will read '1G' when your aircraft is flying level or is stationary. For further details see G-FORCE on page 28.

HEADING
In units of 10 degrees. North is at 0 degrees, East is at 90 degrees, South is at 180 degrees and West is at 270 degrees.

MAP CO-ORDINATES
Your current location in the world on a grid reference of 0 to 200 along X and Y axes. The center of the theater of operations is 100, 100. The farthest Southwest point is 0, 0, and the farthest Northeast point is 200, 200.

WEAPON TYPE
The available weapon depends on the HUD mode.

PITCH LADDER
A series of lines which move, relative to your aircraft's motion, through the center of the HUD. The Pitch Ladder bars show your aircraft's angle of climb and dive, and its roll angle. The center Ladder Bar at 0 degrees is horizontal - to reflect the aircraft's status. The steeper the aircraft's angle of climb or dive, the more acutely triangular the shape of the Ladder Bars.

HUD MODE
Shows the HUD mode in use. The HUD symbology changes and relevant
weapons become available. For further details, see the sections
that follow.

NAV
Navigation mode

AA
Air-to-Air mode

AG
Air-to-Ground mode

ILS
Instrument Landing System mode

AIR-TO-AIR HUD MODE
When this mode is chosen, the air-to-air radar is activated, the flight model is adjusted to a more appropriate air-to-air combat profile, and air-to-air missiles can be launched.

The HUD symbology becomes combat-specific.

Press the Enter key to select the air-to-air HUD mode.

Press the Enter key again to cycle through any air-to-air missiles on board and activate the relevant air-to-air systems.

MASTER ARM INDICATOR
Informs you that the currently selected weapon is armed and ready
to fire.

AIMING RETICULE
This 'kill circle' appears on the HUD when an air-to-air missile is selected. The size of the Aiming Reticule depends on the chosen missile: a small circle is used for long-range stand-off weapons such as the AAAM, and a large circle is for short-range missiles. Your target must be inside this circle if the missile is to hit it.

ASPECT ANGLE CARET
Shows the target aircraft's heading relative to you. If the caret
is at the bottom of the Aiming Reticule, the target is flying
away from you. If the caret is at the top, the target is flying
toward you.

TRACKING INFORMATION
On any aircraft being tracked by your radar as follows:

AIRCRAFT TYPE
CURRENT HEADING
RANGE (MILES)

Press the C key to toggle tracking between any aircraft within
range.

DIAMOND X
When you see this diamond with an 'X' at its center, you will know that a target is outside the HUD view. Fly in the direction of the Diamond X until the target enters the HUD view. The Diamond X will change to a Target Designator Box.

TARGET DESIGNATOR BOX
Appears around the target when it's inside the Aiming Reticule -
even if the target is beyond visual range.

MISSILE SEEKER HEAD
When a target has been picked up by the designator box and is in range, the Missile Seeker Head diamond appears inside the HUD's Aiming Reticule. The diamond will come to rest and flash when the Missile Seeker Head locks on to the enemy target. The currently selected missile is now locked on to the target and ready to launch.

THE BIG X
Flashes across the entire HUD when the target is too close to be hit with your currently selected weapon - in which case switch to a short-range weapon such as the cannon.

AIR-TO-GROUND HUD MODE
When this mode is chosen, air-to-ground targeting radars are activated, the flight model will change to air-to-ground attack profile and air-to-ground weapons can be selected. If your aircraft is carrying GBU bombs, the Laser Target Designator will become available. When a weapon is in range, then "IN RNG" appears on the bottom left of the HUD. For some air-to-ground missiles, the actual distance to the target being shown may be presented until the "IN RNG" appears.

Press the backspace key to select the air-to-ground HUD mode.

MASTER ARM INDICATOR
Informs you that the currently selected weapon is armed and ready
to fire.

THE AIMING CROSS
The most prominent feature of air-to-ground mode is this crosshair which is used to target air-to-ground weapons. "

From the manual