Kalinin K-7 Soviet Heavy Experimental Aircraft

The Kalinin K-7 was a prototype aircraft designed and built in the Ukraine (Soviet Union) in the 1930s. While it was primarily conceived as a heavy bomber, it underwent several design changes and was intended for various roles, including transport, reconnaissance, and even as an airborne aircraft carrier.

Here are some basic specifications for the Kalinin K-7:

1. Crew: The K-7 had a large crew capacity, accommodating up to 16 crew members.
2. Engines: The initial design had seven engines. However, there were variations in engine configurations during its development. Some designs included both pulling and pushing propellers.
3. Dimensions:
   • Wingspan: Approximately 53 meters (174 feet)
   • Length: Approximately 28 meters (91 feet)
   • Height: Approximately 9 meters (30 feet)
4. Performance:
   • Maximum Speed: The K-7 achieved a top speed of around 191 km/h (119 mph) during testing.
   • Range: Specific range data may not be readily available due to the prototype nature of the aircraft.
5. Payload Capacity: The aircraft was designed to carry a substantial bomb load for its time.
6. Role Variations: The K-7 underwent design changes and modifications, and different configurations were proposed, including versions with additional gun turrets and defensive armaments.
7. First Flight: The first flight of the K-7 prototype took place in 1933.

It’s important to note that the Kalinin K-7 faced stability issues and had a tragic crash during a test flight. This, coupled with the changing military requirements and design challenges, led to the project’s abandonment. Due to its limited testing and lack of production, detailed tactical data may not be as comprehensive as for operational military aircraft.