Kazan Helicopters Mi-17-1V Flight Manual page 116

MI1-17-1B. Flight manual
quent waypoints.
(3) When flying on a navigation leg (using navigation leg co-ordinates sys-
tem) determine the helicopter fix (present position) by reading the TRACK
(km) (Ilv'Fb - KM) and XTK DISTANCE (KM) (60KOBOE YKJlOHEHlilE -
KM) digital readouts monitoring and updating their readings visually or by
means of the radio navigation aids.
(4) When approaching the next waypoint proceed to detailed observation of
ground reference objects, refine the helicopter fix (position) and prepare
the co-ordinates readout for the next leg as follows:
(a) Start the co-ordinate reckoning mode.
(b) Set the chart angle of new navigation leg on the co-ordinate indica-
tor, and its data on the TRACK (km) (nYTb - KM), XTK DISTANCE
(km) (60KOBOE YKnOHEHlilE - KM) readouts.
(c) When passing over the waypoint start the co-ordinate reckoning
mode and fly the helicopter to maintain the track angle error equal to
zero.
(5) While visually monitoring the track use first characteristic natural and arti-
ficial ground reference objects. In flying over unmarked terrain use for
orientation not only large but small reference objects such as buildings,
high grounds and bench marks, bluffs, cliffs, roads, walking tracks,
bushes and configurations of woods.
(6) In determination ofthe helicopter fix (position) by means of the radio
navigation aids it is advisable to use the radio stations located aside of
the track within an angle of 60 to 120
0
to it and the departure aerodrome
beacon or the omnirange stations (beacons) which are closer to the heli-
copter longitudinal axis.
The track navigation control is considerably facilitated if the ground ra-
dars are available on the course.
In this case two helicopter fixes (positions), heading and time may be
used for determination of the actual track angle, track angle error, drift
angle and ground speed. These data can be then used for determination
of the correction to heading and determination of wind.
(?) Start and stop the stopwatch at the moment when the co-ordinates are
requested.
(8) When flying from the omnirange station or locator beacon located at the
initial waypoint, use the ground radar for checking the track distance.
(9) Update to the course required for reaching the next check point or way-
point upon occurrence of track angle errors (cross track distance) on the
route or at the selected check point. The corrections to course for the
track distance flown or to go are indicated in Table 4.2.
Table 4 2
Distance
flown
Cross track distance (XTK), km
(togo),
km
2 I 3
4 5
I 6 I
7 8 I
9 10
I
11
I
12
Corrections to course, dec
15 8 11 15 18
22
-
-
- - - -
30 4 6 8
9
11 13 15 17
18 20
-
40
3
4 6 7
9
10 11 13 14 15
17
60
2 3
4 5 6
7
8
9
10 10 11
4-45