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Pilot's Handling Notes for a Savoia Marchetti S.M.79M
with Alfa Romeo 126/RC34 engines
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The three 750hp Alfa Romeo 126/RC34 (Bristol Pegasus)
engines have automated mixture controls, and manually applied carb heat
controls. Superchargers give rated power up to 3400 metres. Each engine can
briefly deliver 780hp for take off, go around or war emergency below 3500
metres. This engine has constant speed airscrews.
AUTOMIXTURE - This engine has Automixture in real life.
Turn automixture ON in the FS9 realism screen before flight.
This medium bomber is loaded by default with 4,633lbs of
AVGAS and 2,200lbs of bombs (1000Kg = design bombload). The torpedo weighed
only 930Kg, but allowing for the weight of the torpedo crutch payload hardly
differed for a torpedo bombing mission. CAUTION - When carrying an external
torpedo drag is significantly higher.
Design cruise altitude is 6000 metres for any mission.
CAUTION - Very weak brakes. Landing roll much longer than
take off roll.
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Take Off:
AUTOMIXTURE = ON (in FS9 realism options)
FLAP = STAGE 1
CARB HEAT = COLD
TRIM = 1 CABRATA
SCREWS = FULL FINE
LINE UP
BRAKES = ON
THROTTLES = FULL
BRAKES = OFF
YOKE = FULL FORWARD to raise tail
TAIL UP - ROTATE FIRMLY
POSITIVE RATE OF CLIMB
GEAR UP
RESTRICT CLIMB <= 3 m/s VSI
ACCELERATE = 175 KmIAS
FLAP = UP
ACCELERATE = 230 KmIAS
WAIT FOR > 3 m/s VSI
Call for Rated power
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Rated power:
Plan 1130 PPH
C2 = 1.3
RPM = 2300
230 KmIAS
ABOVE all obstacles
Call for Climb power
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Climb power:
Plan 850 PPH
RPM = 2200
C2 = 1.2
240 KmIAS
On reaching 6000 metres
Call for flight plan cruise power
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Design Cruise:
C2 = 1.0
RPM = 2070
Plan 660 PPH
Note: Yields 200 KTAS at FL197 (6Km)
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Econ Cruise:
C2 = 0.95
RPM = 1800
Plan 600 PPH
Note: Yields 185 KTAS at FL197 (6Km)
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Descent:
RPM = 1800
MAX 500 KmIAS
<0.7 C2 and OAT <5C CARB HEAT = HOT
Plan 500 PPH
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Approach Circuit and Landing:
Before Downwind leg
OAT <= 5C CARB HEAT = HOT
RPM = 2000
REDUCE < 220 KmIAS
FLAP = STAGE 1
Downwind
REDUCE < 200 KmIAS
FLAP = STAGE 2
In time to achieve Vref
GEAR = DOWN
REDUCE < 175 KmIAS
FLAP = STAGE 3
CARB HEAT = COLD
Cross airfield boundary @ 135 KmIAS (@ 20,000lbs)
ALWAYS LAND ON MAINWHEELS only
THROTTLES = CLOSED
WHEN TAIL SETTLES = YOKE FULL AFT
FLAP = UP
BRAKES = as required
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