Kazan Helicopters Mi-17-1V Flight Manual page 27

MI1-17-1B.Flight manual
ST = 4.593 + 0.033 + 0.05 = 4.676=- 4 h 41 min.
When using the graphs in Figs 1.7 thru 1.10 bear in mind that the total fuel
In~rI
finrlllrlinn
~I=
=,,:;
kn\ ie 1!3irf I"\ff nn rho TI:'
"'3vi~
............... , __ ;:1 _ .
n::JI ,
'-'I,." .
The graphs in Figs 1.7 and 1.9 give for TF = 2514 kg the same values as in
the calculation:
SR
=
885 km
ST = 4,67 = 4 h 41 min.
Example 2. The service range in no-wind conditions is 420 km. The actual
wind speed is 30 km/h, tailwind, the wind angle is equal to 10°.
Solution: The equivalentwind speed EWS
=
30 km/h is derived from Table 1.7.
On the graph in Fig. 1.13 find a point corresponding to the range in no-wind
conditions and to the equivalent wind speed and draw a line equidistant to the
grid from this point to the range axes. The range in wind is 480 km.
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