Diesel engines are a rarity in aviation history, but they've carved out an interesting niche. While most aircraft rely on gasoline-powered piston engines or jet turbines, diesel has offered some ...

Click to open image viewer. Dr. Hugo Junkers started development of his Diesel aircraft engines in a small factory at Dessau, Germany in 1911. His early engines functioned on the two-stroke cycle ...

Click to open image viewer. Pierre Clerget was inspired by the Gnome to produce a supposedly improved rotary engine in 1911. It was a 7-cylinder, 11.88 liter (725 cu in) engine rated at 60 kW (80 hp) ...