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<strong>DCS</strong><br />
[<strong>Su</strong>-<strong>25T</strong> Frogfoot]<br />
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The bomb fall line extending from the impact point indicates the vertical earth axis from<br />
the pipper origin.<br />
Free-fall ammunition is indicated by "АБ" below the pitch scale.<br />
"Launch Authorized" indicates that all the primary release conditions such as range, altitude<br />
and velocity are satisfied and the weapon can be safely released.<br />
"ОПТ ЗЕМЛЯ" in the lower left corner indicates the visual bombing mode.<br />
Weapon availability and state of readiness are indicated along the bottom of the HUD.<br />
Figure 25 illustrates the display when aerial bombs are suspended from the 2nd, 3rd, 4th,<br />
8th, 9th, and 10th hardpoints. The flashing square framing hardpoint 2 indicates the ready<br />
weapon.<br />
High drag munitions and some cluster submunitions may follow a strongly curved trajectory that puts<br />
their impact point below the lower edge of the visible HUD at almost any angle of dive, so that the<br />
CCIP pipper can not be visibly placed onto the target. In this case the continuously-computed release<br />
point (CCRP) or "invisible zone" bombing mode is used instead of CCIP.<br />
In the CCRP mode, the pipper is visible at the extreme lower edge of the HUD. The pilot maneuvers<br />
the aircraft to place the pipper over the target, pulls the trigger and holds it pressed. The pipper<br />
becomes a fixed diamond to mark the target. A director circle appears in the upper half of the HUD<br />
to help the pilot fly the aircraft to the release point. The tip of the "keel" of the aircraft datum symbol<br />
in the HUD should be kept aligned with the center of the director circle. The pilot flies the aircraft<br />
with the trigger held depressed until the bombs are automatically released.<br />
Time scale<br />
Director circle<br />
Datum “keel”<br />
Invisible zone mode<br />
Diamond target marker<br />
Figure 26: Free-Fall Bombing in the "Invisible zone" ("H3" or CCRP)<br />
26 SU-<strong>25T</strong> COCKPIT INSTRUMENTS