Heads-Up Display Modes 35 - Metaboli
Heads-Up Display Modes 35 - Metaboli
Heads-Up Display Modes 35 - Metaboli
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30 <strong>Heads</strong>-<strong>Up</strong> <strong>Display</strong> <strong>Modes</strong><br />
HEADS-UP DISPLAY MODES<br />
3.1. F-15C Eagle HUD <strong>Modes</strong><br />
3.101 Basic HUD Symbology<br />
Several indicators on the F-15C HUD are common to all HUD modes.<br />
Basic HUD Symbology<br />
• The Aircraft symbol, similar to the letter “W,” appears exactly in the center of<br />
the HUD and indicates where the aircraft’s nose is pointing.<br />
• The heading scale appears along the top edge, displaying the heading<br />
rounded to the nearest ten (for example, 270 appears as 27).<br />
• The airspeed scale on the left edge shows the Indicated Airspeed (IAS) in<br />
knots. The airspeed scale does not display values below 150 knots.<br />
• The altitude scale on the right edge shows the aircraft’s altitude above sea<br />
level (MSL) in feet.<br />
• The velocity vector moves through the middle of the HUD, showing the<br />
direction the aircraft is actually moving, which varies from where the aircraft is<br />
heading because of momentum, sideslip, angle of attack, etc.<br />
• The pitch scale appears in the middle of the HUD, centered on the velocity<br />
vector. Primarily, it shows the aircraft’s pitch measured in five-degree<br />
increments. The entire scale moves left and right, however, mirroring the turnand-slip<br />
indicator on the ADI. As with the turn-and-slip indicator, to stop<br />
sideslip, apply rudder toward the scale.<br />
3.102 Navigation Mode<br />
As the name implies, navigation mode provides navigation and steering cues.<br />
Basic navigation mode points the way to the next steer point within the<br />
programmed route. ILS mode, on the other hand, provides information required<br />
during landings.