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 ...
Click to open image viewer. Type: Reciprocating, 18 cylinders, radial, air cooled, two rows, gear-driven 1-stage, 2-speed supercharger Power rating: 1,790 kW (2,400 hp) at 2,800 rpm Displacement: 45.9 ...