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The Ilyushin Il-4 (DB-3F) (Russian: Ильюшин Ил-4 (ДБ-3Ф); NATO reporting name: Bob) [1] is a Soviet twin-engined long-range bomber and torpedo bomber, widely used by the Soviet Air Force and Soviet Naval Aviation during World War II.
17 wrz 2015 · Il-4. In 1938, the Ilyushin design bureau redesigned the Ilyushin DB-3 to ease production and improve its performance, the revised version receiving the designation DB-3F. The aircraft's internal structure, particularly the wings, was extensively changed, eliminating the need for hand finishing of the structure, and with Duralumin replacing ...
18 lip 2015 · Ilyushin began work on this twin engined long-range bomber long before the outbreak of WWII, and it was initially given the code DB-4 from the Russian for Long-Range Bomber.
24 kwi 2024 · The Ilyushin Il-4 had a distinguished and extensive service history during Second World War, serving as one of the primary long-range bombers in the Soviet Air Force throughout the war – even though it was a rather old design by 1945.
Defensive armament mirrored the Il-4 as well, consisting of a 7.62-millimeter ShKAS machine gun on a flexible mount in the nose; another ShKAS gun on a flexible mount firing out the belly; and a 12.7-millimeter UBT gun in a dorsal turret. There were four crew from the outset.
One of the great bombers of the war, the Ilyushin IL-4 has not unnaturally been overshadowed in Western thinking by the great British and American aircraft, yet well over 5,000 IL-4s were produced between 1937 and 1944, the vast majority in the last three years.
Altitude performance was improved by replacing the M-86 with the M-87 A which had the same take off power but developed 900 hp at 15,420 ft (4,700 m), and by fitting the new VISh-23 three-blade variable-pitch metal propeller with a diameter of 11 ft 2 in (3.4 m).
