Propeller-powered train faster than steam

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Propeller-powered train faster than steam

PostPosted by verdilak » Wed Mar 23, 2011 8:05 pm

http://www.wired.com/autopia/2011/03/schienenzeppelin/ wrote:
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Time again for an outrageous pre-war German vehicle design. You’ve already seen the Nazi rocket plane built to nuke New York from orbit. The propeller-driven aluminum train Schienenzeppelin is miles tamer but every bit as magnificent. And unlike the Amerika Bomber, it really ran — at 140 mph in 1931!

The concept and execution of Schienenzeppelin (“Rail Zeppelin”) predated the Nazis by years. Like quantum physics, Bauhaus architecture and Marlene Dietrich, it was a product of the Weimar Republic. All the Nazis contributed was the loco’s eventual dismantling to turn its aluminum into Messerschmitts.

Conceived and built in 1930 by the German rail company Deutsche Reichsbahn, the Schienenzeppelin was a design alternative to the streamlined steam locomotives of its day. It was a slick and relatively lightweight at 20 tons, running on but two axles and powered by a 46-liter BMW V-12.

The same engine was later used to power the light bombers of the Luftwaffe. The engine sent 600 horsepower to a massive ash propeller, tilted seven degrees to produce downforce. It was one of those designs that would shock and delight even in these times, when aluminum is used not for Bauhaus trains but for high-revving V-8s and computers from the near future.

Originally good for 120 mph — on par with the fastest streamlined steam locomotives — the Schienenzeppelin topped out at a magnificent 140 mph in the summer of 1931. It was a record that stood for 23 years and was never surpassed by a gasoline-powered locomotive.

Unfortunately, the train never made it into production. Problems with propeller safety (!) and reliability kept it from attaining mass production. The prototype that set the speed record was dismantled in 1939 on the eve of World War II.

But it does make one wonder at an alternative rail network, one where later evolutions of the Schienenzeppelin scream across the land, rat-tat-tatting like fighter planes, blurred silver bullets toying with the speed of sound.
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