Tail Rotor Pitch Limit System - Kazan Helicopters Mi-17-1V Flight Manual

M.,·17·1B. Flight manual
(C) Close the DOPPLER (,QL-1CC) circuit breaker, and set the DOPP
(,QL-1CC) switch and, if necessary, the DOPPLER LIGHT (nO,QCBET
,QL-1CC) switch to ON (BK11). The TEST (KOHTP), "M" and "B" an-
nunciators on the monitor panel and the 'Tl'' annunciator on the
ground speed and drift angle indicator, and the DOPP FAIL (,QL-1CC
OTKA3AJ1) annunciator on the RH instrument panel should come
on.
(d) Test the Doppler system for solving the test problems by succes-
sively setting the selector switch on the Doppler monitor panel to 1,
2 and 3. The readings of the hovering and low speed indicator
should not differ by more than ±2.5 km/h and ±0.5 m/s respectively,
from the values indicated on the monitor panel, and the readings of
the ground speed and drift angle indicator should be 136 ±3.5 km/h
and 0 ± 1
0
,
respectively.
(e) Test the Doppler system in the SEA (MOPE) mode by setting the "C-
M" (land-sea) selector switch on the ground speed and drift angle
indicator to "M" with the monitor panel selector switch set to SPEED-
136 (CKOPOCTb-136), DRIFT·O (CHOC-O).
The ground speed should rise by 3 km/h. Leave the "C-M" selector
switch either in "C" or "M" position depending on the type of an an-
ticipated flight - overterrain or over sea.
(f) Test the coordinate indicator, for which purpose set the TRACK-KM
(nYTb KM), XTK DISTANCE-KM (60KOBOE YK110HEHL-1E-KM),
GRIVATION (yro11 KAPTbl) digital readouts to zero by operating
the "H", "B", "B11", "Bnp". "-" and
"+"
keys. With the Doppler monitor
panel selector switch set to SPEED-136 (CKOPOCTb-136),
DRIFT-O (CHOC-O), a ground speed reading of 136 ± 3.5 km/h and
a drift angle reading of 0 ± 1
0,
depress the ON (BK11) key on the co-
ordinate indicator. With the Doppler system operating properly, the
FORWARD (BnEPE,Q) digital readout of the coordinate indicator
should display 11.3 km in 15 min.
(g) Check the computer for correct processing of the test problem intro-
duced from the ground speed and drift angle indicator by setting the
"K-P" selector switch to "K".
The ground speed reading should be 306 ±3.5 km/h, and the drift
angle reading should be 15±11
0.
(h) Check the doppler aystem for selection of the MEMORY mode by
setting the monitor panel selector switch to MEMORY (nAMFlTb),
and the ground speed reading should change by not more than ±4
km/h and the drift angle reading by not more than ±3°.
The 'Tl'' annunciator on the ground speed and drift angle indicator
should come on simultaneously.
After completion of the above checks set the "K-P" selector switch to
"P", and the monitor panel selector switch to OPERAT (PA60TA),
The time required for warming up of the ,QL-1CC-15 doppler system at
ambient temperatures above -40°C is 5 min, at lower temperatures
this time is at least 15 min.
7.7. Tail rotor pitch limit system
Switch on and check the CnYY-52 tail rotor pitch limit system as follows:
(1) After start of the engines close the circuit breaker on the RH CB panel,
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