payload, and aspect angle. Most fighters are thus usually displayed on the HUD as a row
of 2 dots. Friendly aircraft have an identification marking in the form of a second row of
dots positioned above the main one.
• The "ИЗЛ" symbol on the left side of the HUD indicates that the radar is turned on and
actively transmitting.
• The radar cursor for target designation is moved by using the [;], [,], [.], [/] keys.
• The expected (manual) range to target (often derived from AWACS and GCI data), as set
by [RCtrl-+] and [RCtrl--] keys and is indicated at the bottom of the HUD under the
azimuth coverage bar. The elevation coverage of the radar scan pattern is calculated from
this parameter.
• The expected relative altitude of the target with respect to your aircraft, as set by the
[RShift-;] and [RShift-.] keys is indicated on the right side of the HUD, next the
elevation coverage bar. This parameter is also used to calculate the scan pattern elevation
coverage.
IF YOUR FIGHTER IS AT AN ALTITUDE OF 5 KM AND AWACS REPORTS A TARGET AT RANGE 80 KM AND ALTITUDE
10 KM, YOU SHOULD TURN YOUR AIRCRAFT TOWARDS THE TARGET, THEN ENTER THE RANGE OF 80 KM AND
RELATIVE ALTITUDE 5 KM INTO THE RADAR. THE RADAR SCAN ZONE WOULD THEN BE CORRECTLY AIMED AT THE
EXPECTED TARGET ELEVATION.
• The elevation angle scale is also at the right side of the HUD. The scale limits are ±60
degrees, indicated by inwards facing tick marks at the top and bottom of the scale. A third
inward tick mark represents the horizon. Outward facing tick marks represent the viewing
angle of the HUD. Next to the fixed elevation scale is a moving elevation coverage bar,
which indicates the limits of the scan pattern in elevation. It cues the pilot to look in the
same direction as the radar scan pattern, using the HUD as a reference. If the elevation
coverage bar is between the HUD tick marks on the elevation scale, then the radar is
searching for targets in the elevation zone visible through the HUD.
• The azimuth coverage bar is displayed at the bottom of the HUD. It has three fixed
positions corresponding to the selected scan pattern azimuth: left – center – right.
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