l I.C.P. Sri l
Savannah
FLIGHT MANUAL
l Pag.
28j
4.7 CRUISE
The cruising speed is achieved
by
applying the 75%
of
the engirre power available at the
propeller. Normally the propeller required power (fixed pitch propeller only) decrease
by
50%
foliowing a 20% RPM decrease only. So, at a constant aircraft's configuration, the propeller will use
the full
engirre power (full RPM) while, at 4.600 RPM, the propeller will
be
supplied with
half
the
full
engirre power.
The cruise speed is
90 mph (5000rpml27.2in.HG) with Rotax 912 UL and 95mph
(5000rpml26 in.HG) with Rotax 912 ULS; remember that the fastestwill run the engirre the highest
will be its fuel consumption and the lowest its operating life, while a slow running engine, for the
same power output, will have its mechanical components loaded
by
greater forces and torques, thus
increasing the risk to break rods, crankshaft and the other moving (rotating) parts. Low RPM
settings
DON'T
increase safety!
Low RPM settings produce low power output thus a lower airspeed would be achieved.
By increasing the flight attitude the
engirre power output will decrease as well as the
propeller's thrust: to compensate it,
it's
required to increase the engine's RPM. The normal engirre
running speed is 4,000 to 5,400 RPM.
The
engirre has been designed to be safely and continuously operated at the maximum RPM
settin
g.
Air-box control: keep 20-24
oc
oftemperature. (Only Rotax 912 ULS)
4.8 DESCENT
During the
descentit's
recommended not to operate the engirre at idle to avoid a hard engirre
cooling which could lead to cylinder heads cracks.
Keep air-box control pulled for hot air.
4.9 APPROACH AND LANDING
Throttle
IDLE
Airspeed
60
mph
l 97 km/h (lAS)
Flaps
20 o
Airspeed
45
mph
(lAS)
Flaps 40°
Airspeed 40 mph l 64 km/h (lAS)
Brakes, upon touching down APPLY
If
a higher rate
of
descent is required, fully extend the flaps. The angle
of
the descent path
may
be
slightly varied
by
throttle operation as required to modify the gliding path. The flare will be
flown in a nose-up attitude. Upon touching down,
by
releasing the control stick, the aircraft's nose
willlower.
If
downwind attitude, keep air-box controlpushed for cold air. (Only Rotax 912 ULS)
Issue l /Revision 2
Ott.
02
ICP
Sri-
Via Torino 12, 14020 PlOV
A'
MASSAIA
(AT)-
Italy
Phone
+39-0141-996503 • Fax +39-0141-996506
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