K-7
The Kalinin K-7 (Russian: Калинин К-7) was a heavy experimental aircraft designed and tested in the Soviet Union in the early 1930s. It was of unusual configuration, with twin booms and large underwing pods housing fixed landing gear and machine gun turrets. In the passenger version, seats were arranged inside the 2.3-meter thick (7 ft 7 in) wings. The airframe was welded from KhMA chrome-molybdenum steel. The original design called for six engines in the wing leading edge, but when the projected loaded weight was exceeded, two more engines were added to the trailing edges of the wing, one left and one right of the central passenger pod. Nemecek states in his book that at first only one further pusher engine was added.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
- Manufacturer
- KhAZ
- Category
- Bombers
- Country of origin
- Soviet Union
- First flight
- 1933-08-21
Specifications
- Cruise speed
- 97 kt
- Max speed
- 121 kt
- Range
- 860 nm
- Service ceiling
- 13,000 ft
- Max takeoff weight
- 102,515 lb
- Empty weight
- 53,793 lb
- Fuel capacity
- 2,410 US gal
- Powerplant
- 7 × Mikulin AM-34F V-12 liquid-cooled piston engines
- Engines
- 7
- Seats
- 120
- Length
- 91.8 ft
- Wingspan
- 173.9 ft
- Height
- 40.7 ft
- Number built
- 1
Specifications are approximate and may vary by variant. Compiled from Wikipedia (CC BY-SA).
Reference and training only. Specifications vary by variant — consult the manufacturer and the official documents.