Indicated stall speed in flight configuration: 153..176 km/h
Indicated stall speed in takeoff/landing configuration: 141..164 km/h
Dive speed limit: 860 km/h
Maximum load factor: 12.2 G
Stall angle of attack in flight configuration: 14 °
Stall angle of attack in landing configuration: 12.6 °
Maximum true air speed at sea level, engine mode - Take-off: 494 km/h
Maximum true air speed at 5000 m, engine mode - Take-off: 601 km/h
Service ceiling: 9200 m
Climb rate at sea level: 12.5 m/s
Climb rate at 3000 m: 10 m/s
Climb rate at 6000 m: 3.7 m/s
Maximum performance turn at sea level: 24.3 s, at 270 km/h IAS.
Maximum performance turn at 3000 m: 36.1 s, at 270 km/h IAS.
Flight endurance at 3000 m: 2.8 h, at 350 km/h IAS.
Takeoff speed: 160..190 km/h
Glideslope speed: 210..220 km/h
Landing speed: 140..145 km/h
Landing angle: 13.9 °
Note 1: the data provided is for international standard atmosphere (ISA).
Note 2: flight performance ranges are given for possible aircraft mass ranges.
Note 3: maximum speeds, climb rates and turn times are given for standard aircraft mass.
Note 4: climb rates are given for Take-off power, turn times are given for Maximum possible power.
Engine:
Model: V-1710-39
Maximum power in Maximum Possible power mode at sea level: 1470 HP
Maximum power in Take-off mode at sea level: 1150 HP
Maximum power in Nominal mode at sea level: 900 HP
Maximum power in Combat mode at 12000 feet: 1150 HP
Maximum power in Nominal mode at 10800 feet: 1000 HP
Engine modes:
Nominal (unlimited time): 2600 RPM, 37.2 inch Hg
Combat power (up to 5 minutes): 3000 RPM, 42 inch Hg
Take-off power (up to 2 minutes): 3000 RPM, 45.5 inch Hg
Maximum Possible power (prohibited by flight manual): 3000 RPM, 56.0 inch Hg
Water rated temperature in engine output: 105..115 °C
Water maximum temperature in engine output: 125 °C
Oil rated temperature in engine intake: 70..85 °C
Oil maximum temperature in engine intake: 90 °C
Supercharger gear shift altitude: single gear
Engine:
Model: V-1710-39 (1942)
Engine modes:
Nominal (unlimited time): 2600 RPM, 37.8 inch Hg
Combat power (up to 15 minutes): 3000 RPM, 44.2 inch Hg
Take-off power (up to 5 minutes): 3000 RPM, 45.5 inch Hg
Maximum Possible power (up to 5 minutes): 3000 RPM, 56.0 inch Hg
Empty weight: 3073 kg
Minimum weight (no ammo, 10% fuel): 3264.2 kg
Standart weight: 3819.1 kg
Maximum takeoff weight: 4414 kg
Fuel load: 404 kg / 561 l
Useful load: 1341 kg
Forward-firing armament:
6 x 12.7mm machine gun "M2.50", 235 rounds, 850 rounds per minute, wing-mounted
Bombs:
254 kg general purpose bomb "FAB-250sv"
512 kg general purpose bomb "FAB-500M"
Rockets:
4 x 7 kg rockets "ROS-82", HE payload mass 2.52 kg
Length: 9.05 m
Wingspan: 11.4 m
Wing surface: 21.92 m²
Combat debut: December 1941
Operation features:
- The engine has no manifold pressure automatic governor. For this reason, manifold pressure not only depends on throttle position, but also from RPM and altitude. This requires additional checking of manifold pressure to not cause engine damage.
- The engine has a single stage mechanical supercharger which does not require manual control.
- The engine is equipped with an automatic fuel mixture control which maintains optimal mixture if mixture lever is set to Auto Rich (66%) position. To use automatic mixture leaning to reduce fuel consumption during flight it is necessary to set mixture lever to Auto Lean (33%) position. In the case of mulfunction of the automatic mixture control the mixture lever should be set to Full Rich (100%) position. To stop the engine mixture lever should be set to the Cut Off (0%) position.
- Engine RPM has an automatic governor and it is maintained at the required RPM corresponding to the governor control lever position. The governor automatically controls the propeller pitch to maintain the required RPM. Also it is possible to turn off the governor and control propeller pitch manually.
- Water and oil radiators shutters are joint with engine cowl outlet shutters and manually operated.
- The aircraft has a very small stability margin in yaw. When angle of side slip is more than 12° plane becomes unstable in yaw and starts to increase the side slip angle by itself. Because of this, it is necessary to accurately operate the rudder pedals and pay attention to the side slip indicator.
- The aircraft has trimmers for all flight-controls: pitch, roll and yaw.
- Landing flaps have a hydraulic actuator and they can be extended to any angle up to 45°.
- The aircraft has a tailwheel control system which is unlocked by the rudder if the rudder pedal is pressed more than half of its range. The tailwheel remains locked if pedals are deflected less than half way. Because of this, it is necessary to avoid large rudder pedal inputs when moving at high speed.
- The aircraft has independent left and right hydraulic wheel brake controls. To apply either brake push the upper part of the rudder pedal.
- The aircraft is equipped with a parking brake system.
- The aircraft has three fuel gauges which shows the level in each fuel tank.
- It is impossible to open or close the canopy at high speed due to strong airflow. The canopy has an emergency release system for bailouts.
- The aircraft is equipped with mechanical releasing system for a single bomb.
- When rockets are installed there is a salvo controller, it has three launch modes: single fire, fire two in a salvo or fire four in a salvo.
- The gunsight has a sliding sun-filter. There is also a back-up mechanical sight which can be used if main sight is damaged.
Basic data and recommended positions of the aircraft controls:
-
Starting the engine:
- recommended position of the mixture control lever: Auto Rich (auto mixture control)
- recommended position of the cowl flap control handle: close
- recommended position of the prop pitch control handle: 100%
- recommended position of the throttle lever: 20%
- before taxiing, the parking brake must be released
-
Recommended mixture control lever positions for various flight modes: Auto Rich (auto mixture control)
3 Recommended positions of cowl flaps for various flight modes:
- takeoff: open 50%
- climb: open 100%
- cruise flight: open 15% (in winter conditions - close if necessary)
- combat: open 50%
- Approximate fuel consumption at 2000 m altitude:
- Cruise engine mode: 15.2 l/min
- Combat engine mode: 24.1 l/min
4 x ANM2 .50 cal machine guns
Removal of 2 external wing-mounted machine guns to reduce total weight
Removed mass: 156 kg
Removed ammunition mass: 64 kg
Removed guns mass: 92 kg
Estimated speed gain: 3 km/h
Mirror
Rear view mirror
Additional mass: 1 kg
Estimated speed loss: 2 km/h
4 x ROS-82 rockets
4 x 82mm High Explosive unguided rockets ROS-82
Additional mass: 40 kg
Ammunition mass: 28 kg
Racks mass: 12 kg
Estimated speed loss before launch: 13 km/h
Estimated speed loss after launch: 10 km/h
Additional ANM2 .50 cal MG ammo
Additional ammo for machine guns: 312 for internal ones, 291 for middle ones, 240 for external ones (instead of 235 per each) or 615 per each for 4x MG.
6 machineguns:
Additional mass: 38 kg
Estimated speed loss: 0 km/h
4 machineguns:
Additional mass: 207 kg
Estimated speed loss: 2 km/h
FAB-250sv bomb
254 kg General Purpose Bomb FAB-250sv
Additional mass: 264 kg
Ammunition mass: 254 kg
Rack mass: 10 kg
Estimated speed loss before drop: 19 km/h
Estimated speed loss after drop: 7 km/h
V-1710-39 (1942) engine
V-1710-39 (1942) engine
Engine with reinforced crankshaft bearings.
Additional mass: 0 kg
Retuned to increase boost:
Up to 15 minutes: 3000 RPM, 44.2 inch Hg
Up to 5 minutes: 3000 RPM, 56.0 inch Hg
Estimated speed increase at sea level: 44 km/h
FAB-500M bomb
522 kg General Purpose Bomb FAB-500M
Additional mass: 522 kg
Ammunition mass: 512 kg
Rack mass: 10 kg
Estimated speed loss before drop: 36 km/h
Estimated speed loss after drop: 7 km/h