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

MK-17-1B. Flight manual
(6) After recovery from turn set the engine power required for horizontal
flight.
It is allowed to execute power turns and turns with bank angles up to 45·
either with the main rotor collective pitch constant or changed in the
course of turn.
(7) If the turn entry speed is less than 200 km/h execute power turns at a
constant collective pitch of the main rotor, at turn entry speeds of 200 to
250 km/h execute turns either at a constant collective pitch or with the
collective pitch reduction by 2 to 5° as read on the (YWB) main rotor col-
lective pitch indicator.
During a vigorous entry into a power turn, with the main rotor collective
pitch unchanged, the main rotor speed increases by 2 to 2.5%.
Entry into power turn or turn with reduction of the collective pitch is ac-
companied by vigorous overspeeding of the main rotor. Therefore the
rate and degree of the main rotor collective pitch reduction and control
stick backward motion in turn should not allow the main rotor speed to
exceed the allowable limits.
(8) In execution of a power turn maintain the selected altitude by changing
deceleration rate or decreasing the bank angle.
(9) Upon attainment of a speed of 100 km/h smoothly push the control stick
forward to discontinue further deceleration and advance the engine
power to hold altitude. Initiate recovery from turn being 15 to 20° short of
the selected reference object (course).
(10) Execute steady ascending and descending spirals at bank angles indi-
cated in Table 2.7.
(1'1) Before execution of a spiral, trim the heiicopter at a seiected speed and
relieve forces from the control stick.
(12) Enter a spiral from horizontal flight, climb or descent by co-ordinated ap-
plication of the control stick and pedals with simultaneous change of the
engine power to the rating, which maintains the selected vertical speed
constant.
4.25.2. Dive
(1) Before initiation of dive proceed as follows below:
(a) Observe airspace, particularly in the direction of dive.
(b) Establish a desired speed and respective engine power.
(c) Relieve the cyclic pitch control stick force.
(d) Set the radio altimeter altitude selector to the dive recovery altitude.
(2) Depending on the altitude and initial speed in the horizontal flight execute
dive with pitch angle changes (from the initial pitch angle the selected
speed) not exceeding values indicated in Table 4.3.
Table 4 3
Maximum pitch-down angle from initial pitch angle (in degrees}for dive entry
Altitude, m speed, km/h
150 and less 180 200 220
Up to 500 20
20 15 10
500 to 1000
20 20
15
-
1000 to 2000 20 10
-
-
Read the diving angles on the Ar6-3K gyro horizon.
(3) After execution of a manoeuvre (zoom, chandelle, etc.) enter dive at
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