By the mid-1930s. I took a plane, capable of performing multi-purpose tasks, namely - Scout, light bomber and attack aircraft. The solution of this problem was raised on a competitive basis, several KB. AT 1936 g. technical requirements for the new multi-purpose aircraft have been developed, has received the code name "Ivanov", that emphasized the simplicity of its design, reliability and simplicity in operation. One of the first to design such a plane launched EDO AN. Tupolev. design work, received factory designation ANT-51 and "NW" ("Stalin's job"), It was conducted under the direction of IO. dry.
Su-2 bomber – video
Originally developed for aircraft engine M-liquid cooling 34FRN, but at the beginning of 1937 g. it was decided to replace it with a more robust M-62 air-cooled. The plane was a single-engine all-metal nizkoplan with retractable landing gear. To eliminate the spacing of the masses along the length of the fuselage is not equipped bomb bay behind the cab pilot, and under the floor of his cabin. Pilot as if "sitting" on a bomb, suspended in the fuselage bomb bay. The bomb bay could accommodate four bombs weighing 100 kg and an additional 200 kg on external sling. Because of this, the crew ANT-51 consisted of pilot and navigator arrow, placed in a relatively small total cabin. Armament consisted of a movable gun ShKAS behind the cab and lower "dagger" installation with reduced mobility gun ShKAS, intended to protect the lower back hemisphere.
25 August 1937 g. aircraft, piloted by test pilot MM. thunderous, It made its first flight. Factory flight tests showed good performance and operational data. In September a pilot machine was damaged during landing, but it was rebuilt and continued testing. State tests were performed on the second experimental machine with a variable-pitch propeller. The aircraft was introduced in versions scout and attack aircraft. tests have shown, that his flight data correspond to the level of contemporary foreign aircraft of the same type. Flight data plane could be improved by installing a more powerful engine M-87, the need for which was determined unreliable operation of the engine M-62.
The third prototype with motor M-87A began testing in November 1938 g. For he had a number of advantages compared to previous machines: increased speed of flight, reduced run-up, increased glide path planning. State tests of the aircraft passed with good grades and was recommended for serial production. AT 1939 g. factory number 135 in Kharkiv began mass production of the aircraft, the designation BB-1 (short-range bomber - the first) (from the end 1940 g. - Su-2). Due to the well mastered the technology of production at the Kharkov factory of metal fuselage, applied on prototypes, It was replaced by a wooden monocoque with plywood paneling of birch veneer. two of the plant was connected to the production of aircraft in Taganrog and Moscow. In total, up to the end of the release in 1942 g. it was released 877 aircraft Su-2. They actively participated in the Great Patriotic War, though how this class of the type of aircraft the unit has exhausted itself. His displaced more suited to fighting on the battlefield Il-2.
Tactic-technical characteristics of the Su-2
– chief designer: P. ABOUT. Dry
– First flight: 25 August 1937 of the year (IPG-51)
– End of operation: begining 1944
– years of production: 1939 — 19 November 1941
– units produced: 893
– unit cost: 430 000 p. (1940, A number of 135, cost price)
Crew Su-2
– 2 people.
Speed Su-2
– Maximum speed at ground: 430 kmh
– Maximum speed at height 5850 m: 486 kmh
– set the height 5000 m: 9,8 min
The range filter Su-2
– 910 km
Practical ceiling Su-2
– 8400 m
The dimensions of the Su-2
– Length: 10,46 m
– Height: 3,94 m
– Wingspan: 14,3 m
– wing area: 29 m²
All Su-2
– empty weight: 3220 kg
– Curb weight: 4700 kg
– The length of the run: 380 m
– path length: 290 m
Engine Su-2
– one M-82
– rated power: 1330 l. from.
Weapon Su-2
– small arms: 4 × ShKAS fixed and 2 × movable ShKAS
– Boezapas: 3400 on the stationary machine guns and 1500 on the mobile
– bomb-load: 400 kg
– Suspended arms: 8 Nurse RS-82 or RS-132
Photo Su-2
Scheme Su-2 bomber
