Heads-Up Display Modes 35 - Metaboli
Heads-Up Display Modes 35 - Metaboli
Heads-Up Display Modes 35 - Metaboli
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38 <strong>Heads</strong>-<strong>Up</strong> <strong>Display</strong> <strong>Modes</strong><br />
missiles remaining on the top line. The aircraft’s Mach number appears on the<br />
second line. After launching an AIM-7, the missile’s Time-To-Intercept (TTI)<br />
counts down on the third line. After launching multiple AIM-7 missiles, the TTI<br />
for the last missile is displayed.<br />
• A flashing, triangular “shoot” cue appears beneath the TD box, indicating<br />
conditions are favorable for a missile launch. The Master Arm switch must be<br />
enabled, the target must be within the missile’s minimum and maximum<br />
launch ranges, and the steering dot must be within the ASE circle.<br />
3.106 AIM-120<br />
The AIM-120 is the F-15’s primary Medium-Range Missile (MRM), having<br />
substantially improved performance over the AIM-7. Unlike the AIM-7, the AIM-120<br />
has its own onboard radar. It uses control signals from the launching platform to<br />
get close to the target, and then uses its own radar for the final phase of flight.<br />
Visual Mode<br />
When selecting an AIM-120 without a radar-locked target, the HUD enters visual<br />
mode. The basic navigation HUD contains a dashed reference circle. The word<br />
“VISUAL” appears in the lower-right corner of the HUD. The type and quantity of<br />
missiles appears in the lower-left corner, above the aircraft Mach number.<br />
AIM-120 Visual Mode<br />
For targets within visual range, steer the aircraft to place a target within the<br />
dashed reference circle. The missile provides no indication it has acquired a target.<br />
Two seconds after launch, its onboard radar goes active, and it will track the target<br />
with the largest radar cross-section present within the circle. The AIM-120’s<br />
onboard radar can detect targets up to 15 nautical miles away. If it does not detect<br />
a target after the radar goes active, the missile will perform a series of “S” turns<br />
along its original flight path. It will engage the target with the largest radar crosssection<br />
it finds.<br />
Track <strong>Display</strong><br />
The track display appears when the radar has locked a target. The HUD displays<br />
tracking information for the locked target: