In-Flight Radar Operation - Kazan Helicopters Mi-17-1V Flight Manual

M,,·17·1B. Flight manual
7.10.3. In-flight radar operation.
(1) Prior to take off switch the radar on following the para. 7.10.2.2.
(2) In flight the radar can be used in 3 main operation modes: TERRAIN
(3EMnrt), WEATHER (METEO) and OUTLINE (KOHTYP).
(3) Radar operation in TERRAIN mode.
- use the TERRAIN mode for radar reference points navigational orienta-
tion;
- switch on the TERRAIN mode by pressing the MODE button until the
TERRAIN (3EMnrt) is displayed;
- set the required picture range by pressing the upper (lower) SCAN R
button;
- make sure that the 340°, 0° and 20° blue azimuth marks are displayed;
- by pressing the upper (lower) UP-DOWN tilt button display the green
image of those terrain sector where you expect the prominent refer-
ence points to appear;
- control the brightness of the picture displayed using BRIGHTNESS con-
trol;
- using the TD control obtain an optimum display of the reference point by
red colour on the green background;
- using the MGC control adjust an acceptable contrast range of the refer-
ence point display;
- detect and identify the reference point comparing the map with radar
picture;
- as approaching to the reference point change the antenna tilt angle and
the picture scale.
Note: 1. The configuration of the reference points displayed on the
screen can differ from their configuration on the aeronautical
chart. .
2. A momentary disappearance of the displayed picture is allowed
when the helicopter makes <10° banked turns. The picture dis-
appearance is
explained-
by the fact that the total pitch and
bank angle exceeds the limits which ensure the antenna stabi-
lization.
• 3. The distortion of the displayed reference points is possible in
case of the radome icing
4. If necessary, you can cancel the indication of the azimuth
marks on the display screen by pressing the MARKS button.
The repeat pressing of the MARKS button will display the
marks again.
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