The radial engine may have fallen far out of favor for internal combustion development over time, but some military vehicles got impressive results from them.

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 ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Type: Reciprocating, 18 cylinders, ...