In addition to its use
for long-range bombing raids, the Il-4s of the ADD's various long-range
bomber corps were used frequently in attacks on tactical targets
immediately behind enemy lines, carrying their maximum bombload. The
Il-4 also came to be used widely by the mine/torpedo bomber regiments
attached to the Baltic, Black Sea and Northern Fleets. When deployed in
a torpedo-carrying role the Il-4 was armed with a 2,072 lbs (940 kg)
45-36-AN (Iow-level) or 45-36-AV (high-Ievel) torpedo. There was also
provision for an auxiliary external fuel tank mounted under the rear
fuselage. During 1943 the Ilyushin Il-4 also saw duties in the
reconnaissance role and some even were converted to glider tugs.
The Il-4 was a robust
and successful aircraft, a number surviving into the post-war period
for use in a variety of support roles. It had sufficient longevity to
earn the NATO codename 'Bob'. Four Il-4s purchased from German war
booty stores were used by the Finns against the Soviet forces from 1943
In 1943 design work
began on the Il-6, an advanced bomber with pressurised crew
accommodation for high-Ievel operations, considerable sweepback on the
wing leading edge, and power provided by two 1,500 hp (1119 kW)
Charomsky ACh-30B diesel engines, but development was abandoned before
the prototype had flown.
TsKB-26 - Original
company designation for the DB-3.
TsKB-30 - Original
company designation for the DB-3F.
DB-3 - Military
designation for the first production type.
DB-3F - Military
designation for the production type replacing the blunt nose turret
with a long more pointed nose.
Il-4 - In 1940 with
more than 2,000 aircraft already produced the designation was changed
to Il-4, conforming with the new scheme in which aircraft were named
for their designers (in this case Sergei Ilyushin).
Type: Three Seat
Long Range Bomber and Torpedo Carrier
Bureau of Sergei Ilyushin
1,100 (820 kW) M-88B 14-cylinder two row radial engines with two stage
Maximum speed 267 mph (430 km/h) at 21,980 ft (6700 m); service ceiling
31,825 ft (9700 m); initial rate of climb 886 ft (270 m) per minute.
2,361 miles (3800 km) on internal fuel. With 2,205 lbs (1000 kg) of
bombs range dropped to 1,616 miles (2600 km).
12,787 lbs (5800 kg) with a maximum take-off weight of 24,912 lbs
70 ft 4 1/4 in (21.44 m); length 48 ft 6 3/4 in (14.80 m); height 13 ft
5 1/2 in (4.10 m); wing area 717.98 sq ft
(66.70 sq m).
One 12.7 mm (0.50 in) BS machine-gun and two 7.62 mm (0.30 in) ShKAS
machine-guns, plus an internal bombload of 2,205 lbs (1000 kg) or a
maximum bombload (internal and external) of 5,512 lbs (2500 kg). Prior
to 1942 all machine-guns would have been of the 7.62 mm (0.30 in) ShKAS
type. (final types) All machine-guns would have been the 12.7 mm (0.50
in) BS type.
TsKB-26, TsKB-30, DB-3, DB-3F. Il-4.
flight (TsKB-26) 1935; (production DB-3) 1937; (production DB-3F) 1939;
final delivery 1944.
Soviet Union (DA, VMF).