If you look at aircraft from the Second World War or earlier, you'll notice that many of them have engines with large frontal areas and cylinders arranged about the propeller crankshaft. This a radial ...
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 ...
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