ICP VENTURA YY-MM-62 Series, Руководство по эксплуатации для пилотов

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VENTURA TM
Ultralight Aircraft
Pilot’s Operating Handbook
VENTURA-POH-ENG
Rev. 00
SERIAL NUMBER:
YY-MM-62-XXXX-Z
FIRST ISSUE: 04/05/2018
REVISION 00: 04/05/2018 NOT CONTROLLED COPY
PAGE: 39/60
5.3. STALL SPEED
WARNING
THE SPEEDS SHOWN IN THE TABLE ARE
SPEEDS INDICATED AIRSPEEDS (IAS).
Mass 992 Lbs / 450 kg 1320 Lbs / 600 kg
Retracted Flaps 41 Mph / 65 km/h / 35 kt 47 Mph / 75 km/h / 41 kt
Flaps 1/2 38 Mph / 61 km/h / 33 kt 44 Mph / 70 km/h / 38 kt
Extended Flaps 36 Mph / 58 km/h / 31 kt 42 Mph / 67 km/h / 36 kt
The speeds indicated above refer to the stall reached by decelerating slowly in leveled flight with
engine idling. In this condition the aircraft begins to sink (high-negative variometer) with high nose
and a light aerodynamic buffet. The high nose fall down slowly after reaching a speed lower than
declared stall speed. The stall condition can be maintained applying full pull-up stick without a
tendency to wing side fall (or pre-spin). The stall with applied power is at a higher attitude angle and
at a further lower speed (almost zero indicated speed). In this condition the rudder must be applied
to the right decisively to counteract the P effect and the stall will be decidedly more sharp with
lowering of the muzzle and possible fall of the side wing due to the high attitude; for the remittance
it is sufficient to release the pressure on the control stick, to reach a normal angle of attack and
speed.
5.4. ENGINE RPM
Engine / RPM 912UL 912 ULS/iS 914UL 915iS
Maximum RPM (red line) 5800 5800 5800 5800
Take-off 5500 5400 5800 5800
Maximum continuous (max 5’) 5500 5500 5500 5500
75% power 5000 5000 5000 5000
Cruising 4600-5200 4500-5500 3500-5500 3500-5500
Idling 1400 1400 1400 1800
Rotax 912 engines performances refer to the installation with DUC Flash propeller, which implies a
fixed pitch setting with number of revolutions depending on altitude, temperature and flight speed.
With a variable pitch propeller such as IVOPROP, installed with Rotax 914UL or Rotax 915iS engine
(also available with Rotax 912 as optional), the desired number of revolutions can be obtained
independently of the flight speed and environmental parameters (within certain limits). In this case it
is therefore possible to set the desired engine power by RPM and manifold pressure (MAP
instrument available as optional), thus following the complete performance tables of the Rotax
operator’s manuals.