DCS Su-27 Flanker Flight Manual page 128

Step 3
Orient the radar elevation scan zone in the direction of the target. There are two ways to do this.
The first method is to set the zone elevation by the data coordinates: range and elevation. To do this
you first need to know the range to target (coming from the AWACS or GCI) in kilometers, which can
be entered on the HUD with the [RCtrl-+],
your own, use the [RShift-;]
target.
The second method is to use the scan elevation caret along the left, vertical axis of the HDD. Control
of this setting can be assigned to a game controller axis. The elevation scan zone setting will
correspond to the reading on the HUD.
Step 4
After you have oriented the scan zone in the direction of the target, you may have to wait up to six
seconds before the target is detected. This is only accomplished after the radar has completed
several scanning cycles. After the radar has detected a target, a contact mark is displayed on the
HUD and HDD. Aircraft that return a friendly identify friend or foe (IFF) return are double-marked.
Hostile aircraft return only a single mark. On the HDD, friendly contacts have a circular mark. The
number of dashes in the contact on HUD represents the RCS size of the target. Generally, the larger
the contact mark is, the larger the contact is.
Step 5
Upon target detection, the next step is to lock it up.
To do so in SCAN mode, place the Target Designation Cursor (TDC) over the contact and press the
[Enter] key. If range, target RCS, and jamming permit, the target will be locked and framed with a
circular target marker. The radar will now be in STT mode.
When in "СНП" (TWS) mode, place the TDC near the contact with the
TDC will automatically "snap to" the target mark. This indicates that the radar is now tracking this
particular contact and receiving additional data about the contact. To enter a full STT lock, press the
[Enter] key. If an STT lock is initiated over 85% of the selected missile's maximum range, the STT
lock will not take place. However, once at or under 85%, then an STT lock will be initiated
automatically.
Step 6
Once in STT mode and the distance to target is 85% or less than that of the maximum range of the
selected missile, the "ПР" (LA – launch authorized) message will appear on the HUD. With this
authorization you may launch the missile by pressing the launch weapon button on your joystick or
by pressing the [Space]
until the missile launches.
122 SU-27 CHECK LISTS
[SU-27]
DCS
[Ctrl--]
and [RShift-.]
key. You should press and hold the weapon launch button for at least 1 sec
keys. To set the target elevation in relation to
keys. Doing this will center the scan zone on the
[;], [,], [.], [/], keys and the