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Pilot's
Handling Notes for a Savoia Marchetti S.M.81 with Gnome et Rhone GR14K engines
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The
three 650hp Gnome et Rhone (Isotta Fraschini) GR14K engines have automated
mixture controls, and manually applied carb heat controls. Superchargers give
war emergency power up to 3500 metres and rated power to much higher altitude. This
aircraft has two pitch screws operated by the flight engineer whose role is
automated within FS9. After climb the screws are locked in course pitch.
Each
engine can briefly deliver 740hp for TOGA and war emergency use below 3500
metres.
WAR
EMERGENCY POWER - After take off never exceed 1.0 C2 except in war emergency.
NEVER
EXCEED 2390 RPM
AUTOMIXTURE
- This engine has Automixture in real life. Turn automixture ON in the FS9
realism screen before flight.
Design
cruise altitude is 5000 metres.
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Take
Off:
AUTOMIXTURE
= ON (in FS9 realism options)
FLAP =
STAGE 1
CARB
HEAT = COLD
TRIM =
10% positive
LINE UP
BRAKES =
ON
THROTTLES
= FULL
BRAKES =
OFF
YOKE = FULL
FORWARD to raise tail
TAIL UP
- ROTATE FIRMLY
RESTRICT
CLIMB <= 3 m/s VSI
ACCELERATE
= 150 KmIAS
FLAP =
UP
ACCELERATE
= 190 KmIAS
WAIT FOR
> 3 m/s VSI
Call for
Rated power
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Rated
and Climb power:
Plan
1070 PPH
C2 = 1.0
190
KmIAS
On
reaching 5000 metres
Call for
cruise power
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Design
Cruise:
C2 = 0.9
Plan 860
PPH
Note:
Yields 174 KTAS at FL164 (5Km)
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Econ
Cruise:
C2 = 0.8
Plan 690
PPH
Note:
Yields 156 KTAS at FL164 (5Km)
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Descent:
MAX 310
KmIAS
RPM
<=2390
OAT
<= 5C CARB HEAT = HOT
Plan 530
PPH
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Approach
Circuit and Landing:
Before
Downwind leg
OAT
<= 5C CARB HEAT = HOT
REDUCE
< 200 KmIAS
FLAP =
STAGE 1
Downwind
REDUCE
< 175 KmIAS
FLAP =
STAGE 2
In time
to achieve Vref
REDUCE
< 150 KmIAS
FLAP =
STAGE 3
CARB
HEAT = COLD
Vref =
Cross airfield boundary @ 110 KmIAS
THROTTLES
= RETARD (IF REQUIRED)
(FLARE)
ALWAYS LAND ON MAINWHEELS only
WHEN
TAIL SETTLES - YOKE FULL AFT
FLAP =
UP
BRAKES -
as required
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