In the autumn 1934 g. OKB A. N. Tupolev gets an assignment to build a long-range bomber ANT-37 (DB-2). In connection with the changed requirements of the military long-range bomber was supposed to have a range of not less than 3000 km and a maximum speed of not less than 350 kmh. Leaders was appointed designer PO. Dry, already has experience of the ANT-25 aircraft development and ANT-36. For aerodynamic design scheme scheme from previous Sukhoi aircraft was taken to the wing of high aspect ratio and a relatively low wing loading.
When constructing the used parts and assemblies serial ANT-36. How and in ANT-25, Aircraft wing fabricated from corrugated aluminum, wherein the recess filled flute and balsa plane ° bschili cloth. The plane was designed for engines "Mistral-Major" firm "Gnome-Rhone" capacity 800 HP. The aircraft is equipped with two rotating towers with machine guns: one at the bow, another behind the cockpit.
At the beginning 1935 g. the layout has been approved, but after half a year the aircraft was completed construction. 16 June of the same year, a test pilot KK. Popov made its first flight. After the factory test prototype was transferred to the state. 20 July plane crashed, Two crew members were saved by parachute, one killed. Cause of the accident was the vibration of the tail, whereby fallen off the rear part of the fuselage. During the construction of the second copy of all the errors have been taken into account, it made the wing fairings, reinforced fuselage ribs on the stabilizer. 25 February 1936 g. ANT-37bis flew for the first. 20 August 1936 g. M.Yu. crew. Alexeev made a nonstop flight on the route Moscow - Omsk - Moscow length 4955 km of 23 no 20 min. In February 1937 g. the car was transferred to the Air Force Institute for testing, where the newly discovered tail vibration. In this regard, the Air Force command has removed the airplane from tests, and further work on the bomber stopped.
Series production aircraft DB-2 (IPG-37) We began at the plant number 18, where two cars were laid, but in early September 1936 g. according to the work stopped. One of the aircraft transferred to the bureau at the plant number 156, where it is added onto as a record. It installed more powerful engines M-86, converted the nose of the fuselage, installed additional fuel tanks, We removed all small arms and Bomber. new three-bladed variable-pitch propeller were installed. The aircraft was named "Motherland" and prepared to record flight. 24 September 1938 g. Monino airfield plane "Rodina" headed east. He had to make a non-stop flight from Moscow to Khabarovsk. I drove the car female crew led by B.C. Grizodubova, the co-pilot was PD. Osipenko and navigator MM. Raskova. Polina Osipenko had already set several world records on the MP-1 seaplane GM design. Berievo. Airplane flying away 5947 km of 26 no 29 minutes at an average speed 224 kmh. Flight ended up landing near Komsomolsk-on-Amur. The crew set a world distance record for women.
Performance characteristics of SB-2 (IPG-37)
Crew DB-2 (IPG-37)
– 3 man
Dimensions DB-2 (IPG-37)
– Wingspan, m: 31.00
– Length, m: 15.00
– Height, m: 5.20
– wing area, m2: 85.00
Weight DB 2 (IPG-37)
– Empty weight: 5800 kg
– Mass normal takeoff: 9456
– Maximum take-off mass: 11500
Engine DB-2 (IPG-37)
– 2 PD M-85
– Power, HP: 2 x 800
Speed DB-2 (IPG-37)
– Maximum speed at height: 342 kmh
– Maximum speed at ground: 301 kmh
Flight range DB-2 (IPG-37)
– 5000 km
Practical ceiling DB-2 (IPG-37)
– 7400 m
Arming DB-2 (IPG-37)
– 1000 kg bombs
Photo SB-2 (IPG-37)
Crew DB-2 bomber (IPG-37) Overall with B.C. Grizodubova, the co-pilot was PD. Osipenko and navigator MM. Raskova
