il2_specs

U-2VS

u2vs

Description

Indicated stall speed in flight configuration: 63..70 km/h
Dive speed limit: 240 km/h
Maximum load factor: 6.5 G
Stall angle of attack in flight configuration: 19°

Maximum true air speed at sea level, engine mode - Takeoff, 1750 RPM: 151.7 km/h
Maximum true air speed at 500 m, engine mode - Takeoff, 1740 RPM: 150.3 km/h
Maximum true air speed at 1000 m, engine mode - Takeoff, 1730 RPM: 148.9 km/h

Service ceiling: 3700 m
Climb rate:
500 m — 3 min. 5 sec.
1000 m — 6 min. 35 sec.
1500 m — 10 min. 40 sec.
2000 m — 15 min. 24 sec.
2500 m — 21 min. 15 sec.
3000 m — 28 min. 35 sec.
3500 m — 38 min. 20 sec.

Maximum performance turn: 22..23 s, at 105..115 km/h IAS.

Flight endurance at 500 m: 5 h, at 90 km/h IAS, 1300 RPM.

Takeoff speed: 75..85 km/h
Glideslope speed: 100 km/h
Landing speed: 60..70 km/h
Landing angle: 12°

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 full-throttle mode and 95 km/h IAS.
Note 5: turn rate is given for 1400..1500 RPM with roll 43°..45°.

Engine:
Model: M-11D

Maximum power in Takeoff mode (1750 RPM) at sea level: no less than 125 HP

Maximum power in Nominal mode (1700 RPM) at sea level: 118 HP
Maximum power in Nominal mode (1700 RPM) at 500 m: 110 HP
Maximum power in Nominal mode (1700 RPM) at 1000 m: 105 HP

Maximum power in Continuous mode (1640 RPM) at sea level: 107 HP
Maximum power in Continuous mode (1640 RPM) at 500 m: 100 HP
Maximum power in Continuous mode (1640 RPM) at 1000 m: 95 HP

Engine modes:
Takeoff/Emergency (5 min) : 1750/1840 RPM
Continuous/Nominal (unlimited): 1640/1700 RPM

Oil rated temperature in engine output: 70..80 °C
Oil maximum temperature in engine output: 115 °C

Airscrew:
Type 257, D 2.4 m, pitch 1.524 m

Empty weight: 748 kg
Minimum weight (no ammo, 10% fuel): 927 kg
Standard weight: 1007 kg
Maximum takeoff weight: 1350 kg
Fuel load: 90 kg / 126 l
Useful load: 350 kg

Forward-firing armament:
1 x 7.62mm machine gun “ShKAS”, 500 rounds, 1800 rounds per minute, wing-mounted (modification)

Defensive armament:
Rear-facing: 7.62mm machine gun “ShKAS”, 400 rounds, 1800 rounds per minute (modification)

Bombs:
2 x 50 kg general purpose bombs “FAB-50sv”
4 x 50 kg general purpose bombs “FAB-50sv”
6 x 50 kg general purpose bombs “FAB-50sv”
2 x 104 kg general purpose bombs “FAB-100M”
2 x 50 kg general purpose bombs “FAB-50sv” and 2 x 104 kg general purpose bombs “FAB-100M”

Height: 2.9 m
Length: 8.17 m
Wingspan of upper wing: 11.4 m
Wingspan of lower wing: 10.65 m
Wing surface: 33.15 m²

The U-2 aircraft was developed under N.N. Polikarpov supervision in 1923-1928. It was designed as a simple, sturdy, and easy to handle two-seater aircraft for flight schools. It went airborne for the first time on June 24, 1927, but many improvements to its design were made afterwards to improve its climb rate. The upgraded plane went into production in 1929 after the first flight on January 7, 1928.

Flight instructors and pilot candidates liked the plane - it forgave the typical mistakes of the trainees, was hard to stall and easy to recover, predictable at high angles of attack and had a low landing speed. Many future aces learned to fly in this \flying school-desk. It was the first aircraft for the majority of VVS pilots.

Several modifications of this aircraft were developed: ambulance S-1 and S-2, passenger U-2SP and U-2L, agriculture U-2AP and military U-2VS. The military modification could carry up to 300 kg of bombs and was equipped with a defensive MG turret. During WWII, it was mainly used as a low-altitude bomber and recon plane. It was a very hard target for enemy fighters at low altitudes because of its low speed, resulting in its relatively high survivability rate. It was used by the famous “night witches”, female pilots and navigators of 46th Guards night bomber regiment. The model was renamed to Po-2 to honor N.N. Polikarpov after his passing in 1944.

Operational features:

There is no engine supercharger.
The fuel mixture control is manual: the mixture should be leaned as the altitude increases for optimal engine functioning and to reduce the fuel consumption while flying level.
The fixed pitch propeller requires controlling the engine RPM manually.
The tail skid is linked to the rudder (8° maximum tilt).
There are no wheel brakes.
There is no electric generator in the default aircraft configuration, so electric lights and Pitot tube warmer (which consumes up to 226W) are fed from 24V battery (10 Ah capacity at 1 A current in standard conditions). To power the RSI-4 radio station, GS-10-350 electric generator is installed along with it.
Please note that with all possible modifications and full fuel the total aircraft weight is 1390 kg, more than its maximum takeoff weight.

Basic data and recommended positions of the aircraft controls:

Starting the engine:
- recommended position of the mixture control lever: 100%
- recommended position of the radiator/cowl flap control handle: no radiator control
- recommended position of the prop pitch control handle: no prop pitch control
- recommended position of the throttle lever: 20%
Recommended mixture control lever positions for various flight modes:
- When running the engine at low throttle near the ground, the mixture control lever should be in the position of about 50%.
- When the engine is running at full throttle near the ground, the mixture control lever should be in the 75-80% position.
- As you gain altitude, the altitude corrector closes.
Recommended positions of the radiator/cowl flap control handle for various flight modes: no control of radiators/cowl flaps
Approximate fuel consumption at 2000 m altitude:
- Cruise engine mode: 0.6 l/min
- Combat engine mode: 0.7 l/min

Modifications

Charge de bombe

Sous vêtement et bas ventre avec des bombes

2 bombes d’emploi général FAB-50sv de 50 kg
Masse supplémentaire : 104 kg
Masse des munitions : 100 kg
Masse des pylones : 4 kg
Perte estimée de vitesse avant le largage : 5 km/h
Perte estimée de vitesse après le largage : 1 km/h

4 bombes d’emploi général FAB-50sv de 50 kg
Masse supplémentaire : 208 kg
Masse des munitions : 200 kg
Masse des pylones : 8 kg
Perte estimée de vitesse avant le largage : 10 km/h
Perte estimée de vitesse après le largage : 2 km/h

6 bombes d’emploi général FAB-50sv de 50 kg
Masse supplémentaire : 312 kg
Masse des munitions : 300 kg
Masse des pylones : 12 kg
Perte estimée de vitesse avant le largage : 16 km/h
Perte estimée de vitesse après le largage : 3 km/h

2 bombes d’emploi général FAB-100M de 104 kg
Masse supplémentaire : 212 kg
Masse des munitions : 208 kg
Masse des pylones : 4 kg
Perte estimée de vitesse avant le largage : 7 km/h
Perte estimée de vitesse après le largage : 1 km/h

2 bombes d’emploi général FAB-100M de 104 kg et 2 bombes d’emploi général FAB-50sv de 50 kg
Masse supplémentaire : 316 kg
Masse des munitions : 308 kg
Masse des pylones : 8 kg
Perte estimée de vitesse avant le largage : 13 km/h
Perte estimée de vitesse après le largage : 2 km/h

Female Crew

“Night Witches” (German: die Nachthexen; Russian: Ночные ведьмы, Nochnyye Vedmy) was a World War II German nickname for the all female military aviators of the 588th Night Bomber Regiment, known later as the 46th “Taman” Guards Night Bomber Aviation Regiment, of the Soviet Air Forces.

Horizon gyroscopique

Horizon gyroscopique AGP-2
Additional mass: 2 kg
Estimated speed loss: 0 km/h

Phare datterrissage

Atterrissage lumière pour les vols de nuit
Masse supplementaire : 2 kg
Perte estimee de vitesse : 1 km/h

Navigation lights
Additional mass: 4 kg

Radio

Radio RSI-4
Masse supplementaire : 12,6 kg
Perte estimee de vitesse : 0 km/h

Roquettes

4 roquettes explosives brisantes non guidées ROS-82 de 82 mm ou 4 roquettes anti blindage non guidées RBS-82 de 82 mm ou 4 roquettes explosives brisantes non guidées ROS-132 de 132 mm

ROS-82x4:
Masse supplémentaire : 40 kg
Masse des munitions : 28 kg
Masse des rails : 12 kg
Perte estimée de vitesse avant le lancement : 2 km/h
Perte estimée de vitesse après le lancement : 1 km/h

ROS-82x8:
Masse supplémentaire : 80 kg
Masse des munitions : 56 kg
Masse des rails : 24 kg
Perte estimée de vitesse avant le lancement : 4 km/h
Perte estimée de vitesse après le lancement : 2 km/h

RBS-82x4:
Masse supplémentaire : 72 kg
Masse des munitions : 60 kg
Masse des rails : 12 kg
Perte estimée de vitesse avant le lancement : 3 km/h
Perte estimée de vitesse après le lancement : 1 km/h

RBS-82x8:
Masse supplémentaire : 144 kg
Masse des munitions : 120 kg
Masse des rails : 24 kg
Perte estimée de vitesse avant le lancement : 4 km/h
Perte estimée de vitesse après le lancement : 2 km/h

ROS-132:
Masse supplémentaire : 224 kg
Masse des munitions : 184 kg
Masse des rails : 40 kg
Perte estimée de vitesse avant le lancement : 8 km/h
Perte estimée de vitesse après le lancement : 4 km/h

Tourelle arrière

Tourelle arrière avec mitrailleuse ShKAS de 7,62 mm et 400 cartouches
Masse supplémentaire : 34 kg
Perte estimée de vitesse : 2 km/h

Bow MG

Wing-mounted 7.62mm ShKAS machinegun with 500 rounds
Additional mass: 27 kg
Estimated speed loss: 3 km/h