Takeoff - Kazan Helicopters Mi-17-1V Flight Manual

MIl-17-1B. Flight manual
Bear in mind when using the A-03? radio altimeter the RAD ALT INOP
(A-03? HE PA60TAET) annunciator may momentarily blink (for 1 to 2s)
with the radio altimeter serviceable. If the annunciator illuminates con-
tinuously for morethan 2
s
disregard the radio aitimeter readings.
(4) Abstain from hops near the ground at altitudes and speeds being within
the cross-hatched altitude - speed envelope of the graph in Fig. 4.1 with-
out urgent necessity, since complete safety of landing in case of failure of
an engine (both engines) is not ensured for this envelope.
(5) Perform low level flying over rough terrain (spurs and bluffs) at altitude not
less than 20 m over the terrain profile and at not less than 60 km/h lAS.
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10
20
AIt,m
30
40
90
100
o
50 100 150
200
Fig. 4.1 Altitude-Speed Envelope
Gross weight limitation in hovering and flight at low altitude and near the
ground
I-GW
=
11100
to
13000
kg
II-GW
=
11100
kg
Caution: avoid flying in cross-hatched areas as far as possible.
4.4. Takeoff
(1) Execute takeoff using one of the following procedures:
(a) Vertical takeoff with acceleration in ground effect.
(b) Vertical takeoff with acceleration out of ground effect.
(c) Running takeoff with run up to a speed of 20 to 50 km/h required for
lift-off.
The minimum dimensions of airfield required for takeoff and landing
at altitudes up to 1500 m are listed below:
50x50 m for vertical takeoff and landing out of ground effect.
50x120 m for vertical takeoff and landing in ground effect.
50x200 m for running takeoff and landing.
The obstacles elevation line in the approach clearways should have
an inclination to horizon not exceeding 1:15
4-6