Rollout On Desired Track - Kazan Helicopters Mi-17-1V Flight Manual

MI1-17-1B. Flight manual
runway before takeoff.
In long flights it is recommended to use the compass system in the direc-
tionai gyro mode (OG).
4.24.2. Rollout on Desired Track
(1) Rollout on the desired track can be effected by using the following meth-
ods:
(a) Flying on the course calculated on the ground corrected for the known
wind and refined in flight by use of the ,QIi1CC-15 doppler system.
(b) Selection of the course aligned with two or three reference objects
(landmarks or check points).
(e) Elimination of the cross track error at the check point.
(d) Flying using the signals of an omnirange radio station or locator
beacon located on the desired track (or aligned with the track).
(2) To capture the desired track flying on the course corrected for the wind
data obtained from the pilot balloon and refined in flight by the ,QIi1CC-15
doppler system bring the helicopter to the selected magnetic course with
the drift angle accounted for when being 2 to 3 km short of the initial
waypoint. This method is the basic one.
When flying the desired track on the course aligned with reference points
there should be two to three characteristic check points on the desired
track. These check points should be aligned with the initial waypoint.
(3) To rollout on the desired track aligned with the check points bring the
helicopter to the calculated magnetic heading on the alignment line at a
distance of 3 to 4 km to the initial waypoint, and mark a sighting point on
the flight compartment canopy front portion which is aligned with two ref-
erence points simultaneously - the initial waypoint and check point.
(4) Maintain the magnetic heading and observe the alignment line to deter
mine the across track deviation.
If the check point alignment line deviates to the right from the sighting point
it means that the helicopter drifts to the left. In this case execute a correc-
tive turn to the right. The amount of turn will be dictated by the rate of the
alignment line runout
from-
the sighting point. .Execute the first corrective
turn to roll out on the desired track, i.e. the alignment line and, thereafter,
execute a corrective turn in the opposite direction through an angle equal to
a half of the first corrective turn angle. If necessary repeat this manoeuvre
several times until completely aligned with the desired track.
(5) On capturing the desired track through elimination of the cross track error
select a characteristic reference point on the desired track at a distance
of 15 to 20 km from the initial waypoint.
Fly over the initial waypoint on MH - DSRMTK and maintain this heading
to the check point. While approaching the check point determine the
cross track error or distance (in degrees or kilometres) by noting the heli
c
copter fix (POS) and introduce a correction on the magnetic heading de-
termined for the cross track error, and an additional correction for the dis-
tance to go to the check point.
(6) Continue flying on the corrected heading until reaching the check point or
initial waypoint. If the desired track is captured before reaching the next
waypoint the additional correction for the distance to go should be disre-
garded.
(7) To roll out on the desired track and fly on it from the omnirange station
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