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Why Were Old Jet Engines So Much More Smoky Than Newer Ones?

The dawn of the jet age saw the skies near major airports raked with thick black smoke trails. These exhaust plumes have largely disappeared from our atmosphere due to continuous jet engine innovations. Here is the story of the jet engine’s amazing change in visual and ecological signature since its introduction into… » 7/30/15 3:03pm Yesterday 3:03pm

Hitler’s personal plane was powered by this US-designed engine

The first BMW product may have been an aircraft engine, but it took help from the United States to return BMW to their roots after World War I put an end to German aircraft engine production. This BMW 132 radial nine began life in 1926 as the Pratt & Whitney Hornet and went on to power thousands of Luftwaffe planes,… » 6/14/11 10:30am 6/14/11 10:30am