Hi!
http://aviadejavu.ru/Site/Crafts/Craft30922.htm
http://www.tupolev.ru/ant-30-sk-1
"In 1933-1934 years, the Air Cruiser project Twin-engineed a multi-purpose aircraft, which the ideas laid in R-6 and Mi-3, were being developed at the technical requirements for the airforce. The military ordered a twin-engine Land Cruiser, from the SC-1 to the Land Cruiser.
From the Air Force on the ant-30 aircraft, TTT, aerodynamic analysis, models, construction documents for an experimental specimen were produced, and experimental production began. But all the work was gradually phased out at the end of 1933, in early 1934, by which time the technical readiness of STA-30 was estimated at 16%. The reason was the decision to move to a more promising type of aircraft, the Ant-40 (SB), as well as the gradual demise of the concept of a generic cruiser aircraft."
http://alternathistory.livejournal.com/1627237.html
"The main design data of the Ant-30 (SC-1) aircraft on the basis of the TTT Air Force:
Normal flight mass-5300 kg;
Weight of normal payload-928-1560 kg;
Weight of payload with overload-2200 kg;
Maximum speed at Earth-259-283 km/h;
The maximum speed at the height of 4000 m-317 km/h;
Rise time at height 5000 m-23.15 min;
The time to perform superelevation at a height of 1000 m-22 sec;
Crew-4 persons;
Armament: 3 x 7.62 ShKAS and 1 x 20 mm Oerlikon;
The bomb load is 1000 kg.