sentences:  During World War One, V8 aircraft engines included the French Renault 8G, the Spanish Hispano-Suiza 8, the British Sunbeam Arab, and the American Curtiss OX-5.After this time, flat-eight engines became more commonplace than V8 engines due to their lighter crankshafts and better suitability to air cooling.One of the few remaining V8 airplane engines by World War Two was the German Argus As 10 inverted V8, which was air-cooled and used in several trainer as well as small utility aircraft.