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C-17 Facts: Everything You Need To Know

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C-17 Engines

C-17 Engine, C-17 Facts
The engine of a Royal Australian Air Force C-17 Globemaster at the 2008 Amberly AFB Airshow, QLD Australia.
Timothy Swinson

Four Pratt & Whitney F117-PW-100 turbofan engines, which are based on the commercial Pratt and Whitney PW2040 used on the Boeing 757, power a C-17 Globemaster III. Each engine is rated at 40,440 pounds of thrust and includes thrust reversers that direct the flow of air upward and forward to avoid ingestion of dust and debris. The engine weighs 7,100 pounds and measures 146.8 inches long. The inlet diameter of the engine is 78.5 inches, the maximum diameter of the engine is 84.5 inches long, it has a bypass ratio of 5.9 to 1, and a overall pressure ratio of 30.8 to 1.