World War II Vehicles, Tanks and Airplanes, picture of P-51 Mustang
World War II Vehicles, Tanks and Airplanes, picture of T-34/85
World War II Vehicles, Tanks and Airplanes, picture of Fw-190
World War II Vehicles, Tanks and Airplanes, picture of Churchill
wwiivehicles.com ©2016
Search:
Soviet Union's FlagSoviet Union's aircraft marking

Soviet Union's Ilyushin Il-4 bomber; Ilyushin Dalni Bombardirovshchil ("long range bomber") DB-3 bomber

Photos

  • Z.K.B 26 bomber
  • Z.K.B 26 bomber
  • Iliushin DB-3A bomber
  • Iliushin DB-3A bomber

Design

The DB-3 / Il-4 was designed by Sergei Vladimirovich Ilyushin in 1936.

The DB-3 changed its name in 1940 and it became the Ilyushin Il-4.

The construction of the DB-3F / Il-4 was initially metal. After the German invasion, wood was used in the main spars. Wood also was used in the cabin floor, tail, and outer wing panels.

Cockpit

The cockpit had a wooden floor due to metal shortages.

Fuselage

Had a glazed nose with a simple MG mounting.

Most Il-4s had a cleat for towing an A-7 or G-11 glider.

Wings

Starting in 1942 the wings had wooden spars that replaced the metal.

Propellers

Starting in 1942 the propellers were fully feathered.

Prototype

The TsKB-26 prototype flew in 1935 (May 1936). There were additional prototype that were designated through TsKB-30.

The prototype first flew in January 1940.

In 1940 / March 1942 it was redesignated from the DB-3F to the Il-4.

Production

The Il-4 took 1/2 the time to build compared to the DB-3.

  • Ilyushin DB-3:
    • Production: 1937 - ?, 1937 - 1944, ? - 1944
  • Ilyushin DB-3B: 1,528
    • All built by mid-1939.
  • Ilyushin DB-3F / Ilyushin Il-4: >5,000, 5,256
    • 1940: 2,000
    • Production: 1937 - 1944, 1939 - 1944
  • Total: ~6,800
    • Manufacturer: State Industries

Soviet Union Invaded

After Germany invaded, the factories were moved to Siberia.

The plant that made the engines had to be moved and metals were in short supply so that the designer had to come up with a way to replace as much of the metal used with wood as possible.

Variants

  • Ilyushin TsKB-26: Prototype. Had an open cockpit. Had Gnome-Rhône K-14 engines (800 HP). Had a blunt nose with a gun turret.
  • Ilyushin DB-3: Had M-85 engine (765 HP).
  • Ilyushin DB-3: In 1938 used the M-86 engine (960 HP).
  • Ilyushin DB-3B: Initially had M-85 engine (765 HP). Later models (starting in 1938) had M-86 engines (960 HP). These also had enclosed cockpits.
  • Ilyushin DB-3F / Ilyushin Il-4: Had longer nose. Appeared in 1939. Initially had M-86 engines and these were replaced by the M-88 in production. There was no turret in the nose. In 1940 became the Ilyushin Il-4.
  • Z.K.B. 26: Bomber. Turret with two machine guns behind the cockpit.

Usage

Finland and the Soviet Union used the Ilyushin Il-4. Both the Soviet Air Force and Navy used the DB-3.

The Soviets used the DB-3 / Il-4 as a bomber, torpedo bomber, glider tug, transport, and for reconnaissance.

Finland

Finland's air force shot down many Il-4s.

Finland used captured Il-4s. Some were also purchased from aircraft that the Germans captured after the invasion. Eleven were DB-3Bs and four DB-3Fs.

Raid on Berlin

On August 8, 1941, 15 Navy Il-4s bombed Berlin.

After World War II

The Il-4s remained in service until 1949 and was named "Bob" by NATO.

Specifications

  Ilyushin DB-3A
Type Medium bomber
Engine (Type) 2: M-87N
HP 1,000 each
Dimensions  
Span 70'
Performance  
Speed 270 mph
Range 2,000 miles
Armament  
Nose 1: MG
Dorsal turret 1: MG
Ventral 1: MG
Bombs - internal and external 2 1/2 tons
  Ilyushin DB-3F
Type Bomber
Crew 3 - 4
Engine (Type) 2: M-86
OR 2: M-88B
Cylinders Radial 14
HP M-86: 960 each
M-88B: 1,100 each
Propeller blades 3 each
Dimensions  
Span 70' 4"
21.44 m
Length 48' 6.5"
14.8 m
Height 13' 6"
4.11 m
Weight  
Empty 12,787 lb
5,800 kg
Loaded 24,912 lb
11,300 kg
Performance  
Speed  
Spee at 21,980' / 6,700 m 267 mph
430 kph
Cruising speed 199 mph
320 kph
Climb 868'/minute
265 m/minute
Climb to 21,960' / 6,700 m 12 minutes
Service ceiling 31,825'
9,700 m
Range 2,361 miles
3,800 km
Range with 2,205 lb / 1,000 kg load 1,616 miles
2,600 km
Armament  
Nose 1: 7.62 mm MG
OR 1: 13 mm MG
OR  
Dorsal turret 1: 7.62 mm MG
OR 1: 13 mm MG
Ventral 1: 7.62 mm MG
OR 1: 13 mm MG
Bombs - internal 2,205 lb
1,000 kg
OR  
Bombs - internal and external 5,511 lb
2,500 kg
OR  
Torpedo - under fuselage 1: 2,072 lb
1: 940 kg
  Ilyushin Il-4
Type Bomber, Torpedo bomber
Crew 3 - 4, 4
Engine (Type) 2: M.88B
2: Tumanskii M-88B piston
Cylinders Radial, Radial 14
Cooling Air
HP 1,100 each
Propeller blades 3 each
Dimensions  
Span 70' 4" , 70' 4.25"
21.44 m
Length 48' 6", 48' 6.5"
14.8 m
Height 13' 5.5", 13' 9"
4.1 m, 4.2 m
Wing area 718 ft2
66.7 m2
Weight  
Empty 12,760 lb, 13,228 lb
5,800 kg, 6,000 kg
Loaded 22,046 lb, 22,660 lb
10,000 kg, 10,300 kg
Performance  
Speed at 15,500' / 4,725 m 255 mph
410 kph, 411 kph
Speed at 19,700' / 6,000 m 230 mph
420 kph
Speed @ 21,000' 255 mph
Climb 886'/minute
270 m/minute
Climb to 16,400' / 5,000 m 12 minutes
Service ceiling 30,850', 32,810'
9,400 m, 10,000 m
Combat range 936 miles
1,510 km
Range 2,647 miles
Range with bombs 1,616 miles
2,600 km
Range with maximum fuel 2,220 miles
3,585 km
Armament  
Nose 1: 7.62 mm
1: 7.62 mm ShKas
1: 12.7 mm UBT MG
OR 1: 12.7 mm
OR 1: 20 mm
Dorsal turret 1: 7.62 mm ShKas
1: 12.7 mm UBT MG
OR 1: 20 mm ShVAK
OR 1: 12.7 mm
Ventral 1: 7.62 mm ShKas
1: 12.7 mm UBT MG
OR 1: 12.7 mm
Bombs 2,205 lb, 5,512 lb
1,000 kg, 2,500 kg
OR  
Torpedo 1: 2,000 lb
3: 1,102 lb
3: 500 kg
  Z.K.B. 26
Type Bomber
Crew 5
Engine (Type) 2: M-85 (Gnome-Rhône 14K)
HP 1,000 each
Performance  
Speed 300 mph
Armament  
Nose 1: MG
Turret 2: MG
Bomb 6,600 lb

Sources:

  1. Aircraft of WWII, General Editor: Jim Winchester, 2004
  2. Fighting Aircraft of World War II, Editor: Karen Leverington, 1995
  3. Aircraft of WWII, Stewart Wilson, 1998
  4. World War II Airplanes Volume 2, Enzo Angelucci, Paolo Matricardi, 1976
  5. Aeronautics Aircraft Spotters' Handbook, Ensign L. C. Guthman, 1943
  6. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
20th Century American Military History Crucial Site