ENGINES
The
IL-12 has two Shvetsov Ash-82FN 14-cylinder radial engines. Each provides 1850
hp for take off at sea level.
Before
take-off
Cowl flaps
closed
No trimming necessary
Flaps to take-off position (20 degrees, press F7 twice)
Take-off
Full throttle and RPM.
Rotate at 85 KIAS
Establish positive rate of climb.
Landing gear up.
Let the aircraft accelerate to 115 KIAS at approx. 6 m/s (1200 fpm)
At 500 feet AGL:
Cowl flaps 1 stage open
Retract flaps
Initial climb
Cowl flaps two stages open
1040 mmHg MAP (41 inches)
2400 RPM
130 KIAS
Climb 2000 feet AGL
En route Climb
Cowl flaps one stage open
2350 RPM
1000 mmHg MAP (39.4 inches)
Minimum 2.5 m/s (500 fpm) climb rate, airspeed 130-140 KIAS.
Cruise
Cowl flaps closed
Maximum cruise 2200 RPM, 850 mmHg MAP (33.5 inches).
Normal cruise 2100 RPM, 800 mmHg MAP (31.5 inches).
Cruise
at low weight or at low altitudes: Down to 1600 RPM and 760 mmHg MAP (30
inches)
Descent
Cowl flaps 0-1 stage open
2100 RPM
Reduce MAP in stages of 3 inches per minute.
Minimum 600 mmHg MAP (24 inches)
Holding
Cowl flaps 0-10% open
2100 RPM
Obtain 150 KIAS
Approach and Landing
Cowl flaps two stages open, 2200 RPM
Reduce to 140 KIAS, flaps stage 1
Nearing Glideslope, reduce to 125 KIAS.
Extend
landing gear, flaps stage 2 (20 degrees)
On descending: 30 degrees of flaps.
At 500 ft AGL: Full flaps (45 degrees)
Cross
airfield boundary at 90 KIAS.
Touchdown
at 80 KIAS
After touchdown
Cowl
flaps fully open. Flaps up
Wheel brakes as required