WORLD WAR TWO TURBOPROP B17 BOMBER

Boeing B-17 Flying Fortress Spinning Up It's Properllers.

Boeing B-17 Flying Fortress
The Boeing B-17 Flying Fortress is a four-engined heavy bomber developed in the 1930s for the United States Army Air Corps. Competing against Douglas and Martin for a contract to build 200 bombers, the Boeing entry outperformed both competitors and exceeded the Air Corps' performance specifications. Wikipedia

Turboprop - Aircraft engine
A turboprop engine is a turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. Air enters the intake and is compressed by the compressor. Wikipedia

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