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 ...

Readers have expressed their worries about the logistical burdens of counter-rotating propellers and gearboxes on the Airbus Military A400M (AW&ST Sept. 15, p. 9; Aug. 18/25, p. 12). Controllability ...

Unique counter-rotating design to help mitigate technical risk of integrating engines on to airlifter Airbus Military has chosen a unique "handed" propeller concept for the A400M airlifter in a bid to ...

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 ...

High-concept MAV takes off with fixed wings and counter-rotating propellers, allowing it to operate with high aerodynamic efficiency--even in adverse conditions, according to its creator. The military ...