The Bristol Centaurus is a 53-litre radial engine from an era when aircraft relied on raw displacement and mechanical force.

As with many things in technological development, identifying the most revolutionary designs depends in part on what aspects one wants to stress. And when it comes to commercial aircraft engines, it ...

Power rating: 33.6 kW (45 hp) at 1,300 rpm Displacement: 4.6 L (279 cu in.) Bore and Stroke: 90 mm (3.5 in.) x 120 mm (4.7 in.) Alessandro Anzani, an Italian who originally built motorcycles in France ...

Bore and Stroke: 117 mm (4.6 in.) x 108 mm (4.3 in.) The Warner Aircraft Corporation of Detroit, Michigan built four models of similar radial air-cooled engines. Three were seven cylinder engines ...