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 ...

During World War II the radial engine was popular, and it was used in many fighter and bomber aircraft. Manufacturers in aviation used them because the engines deliver a ton of power for their size, ...

Continental, a successful manufacturer of automotive engines, purchased the rights for a Burt-McCollum single-sleeve valve engine design in 1925. Believing this technology might replace poppet valves ...

Bore and Stroke: 114 mm (4.48 in.) x 119 mm (4.69 in.) The Japanese conglomerate Hitachi manufactured aircraft engines from about 1929 until the end of World War II, with a concentration on low-power ...