Ilyushin Il-4
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Ilyushin Il-4
Ilyushin Il-4 tel que raconté sur Wikipedia in english :
---------------------------------------------------Cité :
The [Vous devez être inscrit et connecté pour voir ce lien] Il-4 was a [Vous devez être inscrit et connecté pour voir ce lien], widely used by the [Vous devez être inscrit et connecté pour voir ce lien]
(VVS, Voenno-Vozdushnye Sily) although not well known. Its NATO code-name was "Bob"
DB-3
The Il-4 started life as a quickly produced bomber prototype called the TsKB-26. Parts of the [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] were taken from the TsKB-12 ([Vous devez être inscrit et connecté pour voir ce lien]) fighter, married to new wings made of [Vous devez être inscrit et connecté pour voir ce lien] U-beams and tubes.
Only a few were built before attention turned to the updated TsKB-30, which included a new fuselage using the same construction methods.
Welding the beams required three welds per joint, so the plane took a huge amount of time to build.
Nevertheless the design had excellent range and was quite sturdy. It was put into production in 1936 as the [Vous devez être inscrit et connecté pour voir ce lien], 1,528 being completed by 1939.
---------------------------------------------------Cité :
The [Vous devez être inscrit et connecté pour voir ce lien] Il-4 was a [Vous devez être inscrit et connecté pour voir ce lien], widely used by the [Vous devez être inscrit et connecté pour voir ce lien]
(VVS, Voenno-Vozdushnye Sily) although not well known. Its NATO code-name was "Bob"
DB-3
The Il-4 started life as a quickly produced bomber prototype called the TsKB-26. Parts of the [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien] were taken from the TsKB-12 ([Vous devez être inscrit et connecté pour voir ce lien]) fighter, married to new wings made of [Vous devez être inscrit et connecté pour voir ce lien] U-beams and tubes.
Only a few were built before attention turned to the updated TsKB-30, which included a new fuselage using the same construction methods.
Welding the beams required three welds per joint, so the plane took a huge amount of time to build.
Nevertheless the design had excellent range and was quite sturdy. It was put into production in 1936 as the [Vous devez être inscrit et connecté pour voir ce lien], 1,528 being completed by 1939.
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Re: Ilyushin Il-4
DB-3M
DB-3 was followed by the updated DB-3M, which looked similar with the exception of a much larger and more rounded nose.
However the plane was actually quite different internally. Using lessons learned from the Li-2 ([Vous devez être inscrit et connecté pour voir ce lien]) the entire plane was re-built using T shaped formers instead of the tubes and U-beams.
This led to a tremendous reduction in the time needed to build the plane, and the DB-3M was hurriedly put into production.
DB-3F / Il-4
A change of engine from the 708 kW (950 [Vous devez être inscrit et connecté pour voir ce lien]) M-87B to the 820 kW (1,100 hp) M-88 resulted in the DB-3F, which were eventually renamed in 1942 as the Il-4.
Some series had wooden outer wings and front fuselage to conserve [Vous devez être inscrit et connecté pour voir ce lien], and throughout the production [Vous devez être inscrit et connecté pour voir ce lien] and fuel tanks were upgraded for more performance while keeping the same range.
However the most notable change was the addition of larger defensive guns in the [Vous devez être inscrit et connecté pour voir ce lien], using the 12.7 mm (0.5 in) UBT in place of the earlier 7.62 mm (0.3 in) weapons.
In addition it was found that the gunners were attacked first, so blocks of [Vous devez être inscrit et connecté pour voir ce lien] were placed around the gunner positions.
DB-3 was followed by the updated DB-3M, which looked similar with the exception of a much larger and more rounded nose.
However the plane was actually quite different internally. Using lessons learned from the Li-2 ([Vous devez être inscrit et connecté pour voir ce lien]) the entire plane was re-built using T shaped formers instead of the tubes and U-beams.
This led to a tremendous reduction in the time needed to build the plane, and the DB-3M was hurriedly put into production.
DB-3F / Il-4
A change of engine from the 708 kW (950 [Vous devez être inscrit et connecté pour voir ce lien]) M-87B to the 820 kW (1,100 hp) M-88 resulted in the DB-3F, which were eventually renamed in 1942 as the Il-4.
Some series had wooden outer wings and front fuselage to conserve [Vous devez être inscrit et connecté pour voir ce lien], and throughout the production [Vous devez être inscrit et connecté pour voir ce lien] and fuel tanks were upgraded for more performance while keeping the same range.
However the most notable change was the addition of larger defensive guns in the [Vous devez être inscrit et connecté pour voir ce lien], using the 12.7 mm (0.5 in) UBT in place of the earlier 7.62 mm (0.3 in) weapons.
In addition it was found that the gunners were attacked first, so blocks of [Vous devez être inscrit et connecté pour voir ce lien] were placed around the gunner positions.
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Re: Ilyushin Il-4
All this extra weight wasn't offset by the newer engines however, and the Il-4 proved to be slower than the earlier versions at only 404 km/h (251 mph).
An attempt to improve performance was made as the [Vous devez être inscrit et connecté pour voir ce lien], adding large [Vous devez être inscrit et connecté pour voir ce lien] and heavier armament.
The engine proved unreliable and production was never started.
The Il-4 remained in production until [Vous devez être inscrit et connecté pour voir ce lien], when just over 5,200 had been built.
An attempt to improve performance was made as the [Vous devez être inscrit et connecté pour voir ce lien], adding large [Vous devez être inscrit et connecté pour voir ce lien] and heavier armament.
The engine proved unreliable and production was never started.
The Il-4 remained in production until [Vous devez être inscrit et connecté pour voir ce lien], when just over 5,200 had been built.
Cyclope3- CLUB
- Messages : 671
Localisation : GPS
Re: Ilyushin Il-4
Operational history
Although the Il-4 was only a medium bomber, it had the range to be used on strategic missions.
The VVS wasn't terribly interested in this role, but nevertheless the Il-4 was used on several highly publicized raids against [Vous devez être inscrit et connecté pour voir ce lien].
Most would be used on much shorter range missions, often adding another 1,000 kg (2,204 lb) of [Vous devez être inscrit et connecté pour voir ce lien] under the wings, in addition to the internal 2,500 kg (5,512 lb).
Finland bought four captured DB-3Fs from German stocks. These were given the Finnish Air Force serials DF-22 to DF-25 and flown from [Vous devez être inscrit et connecté pour voir ce lien], [Vous devez être inscrit et connecté pour voir ce lien] to Finland (one aircraft, DF-22, was destroyed en route and crashed near Syeschtschinskaya airfield).
The aircraft were later flown by [Vous devez être inscrit et connecté pour voir ce lien] during 1943 (DF-23, DF-24 and DF-25), [Vous devez être inscrit et connecté pour voir ce lien] during 1944 (DF-23 and DF-24) and [Vous devez être inscrit et connecté pour voir ce lien] for a short time in 1945 (DF-23), until the last remaining serviceable aircraft went into depot, February 23 1945.
Although the Il-4 was only a medium bomber, it had the range to be used on strategic missions.
The VVS wasn't terribly interested in this role, but nevertheless the Il-4 was used on several highly publicized raids against [Vous devez être inscrit et connecté pour voir ce lien].
Most would be used on much shorter range missions, often adding another 1,000 kg (2,204 lb) of [Vous devez être inscrit et connecté pour voir ce lien] under the wings, in addition to the internal 2,500 kg (5,512 lb).
Finland bought four captured DB-3Fs from German stocks. These were given the Finnish Air Force serials DF-22 to DF-25 and flown from [Vous devez être inscrit et connecté pour voir ce lien], [Vous devez être inscrit et connecté pour voir ce lien] to Finland (one aircraft, DF-22, was destroyed en route and crashed near Syeschtschinskaya airfield).
The aircraft were later flown by [Vous devez être inscrit et connecté pour voir ce lien] during 1943 (DF-23, DF-24 and DF-25), [Vous devez être inscrit et connecté pour voir ce lien] during 1944 (DF-23 and DF-24) and [Vous devez être inscrit et connecté pour voir ce lien] for a short time in 1945 (DF-23), until the last remaining serviceable aircraft went into depot, February 23 1945.
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Localisation : GPS
Re: Ilyushin Il-4
Specifications
General characteristics
General characteristics
- Crew: 4 (pilot, navigator, gunner/wireless-operator, rear gunner)
- Length: 14.80 m (48 ft 6.75 in)
- [Vous devez être inscrit et connecté pour voir ce lien]: 21.44 m (70 ft 4.5 in)
- Height: 4.10 m (13 ft 5.5 in)
- Wing area: 66.7 m² (718 ft²)
- Empty weight: 5,800 kg (12,787 lb)
- [Vous devez être inscrit et connecté pour voir ce lien]: 11,300 kg (24,912 lb)
- Powerplant: 2× [Vous devez être inscrit et connecté pour voir ce lien]B [Vous devez être inscrit et connecté pour voir ce lien], 820 kW (1,100 hp) each
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Re: Ilyushin Il-4
Armament
[Vous devez être inscrit et connecté pour voir ce lien]
- 2 × [Vous devez être inscrit et connecté pour voir ce lien]
- 1 × [Vous devez être inscrit et connecté pour voir ce lien] machine gun
- Up to 2,500 kg (5,500 lb) of bombs or mines.
- Alternatively, 1 × 940 kg (2,072 lb) 45-36-AN or 45-36-AV torpedo.
- Very rarely, 2 × BETAB-750DS 305 mm rockets.
[Vous devez être inscrit et connecté pour voir ce lien]
Cyclope3- CLUB
- Messages : 671
Localisation : GPS
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