The Airbus A400M is one of the most distinctive aircraft in the sky, and its unusual humming sound is a big reason why. Produced by the interaction of its massive counter-rotating propellers, the ...

At the very crux of engineering is the desire to problem-solve, optimize, and squeeze out every bit of efficiency possible from the system being built. Aircraft design and aeronautical engineering ...

The An-70 transport is a high-wing aircraft powered by four 14,000-shp ZMKB Progress D-27 propfan engines with six-blade counter-rotating propellers. Maximum payload is 103,615 lb. Two An-70 ...

During World War II, Germany built one of the most enormous transport aircraft ever flown: the Messerschmitt Me 323 Gigant. With six engines, counter rotating propellers, and a wingspan of more than ...