page_title: Steam turbine locomotive
section_title: Sweden
hierarchical_section_title: Steam turbine locomotive / Drive methods / Direct drive / Sweden
caption_attribution_description: Svenska: Fredrik och Birger Ljungströms ångturbinlokomotiv tillverkat i fabriken i Gåshaga på Lidingö. Ångkondensorn för återvinning av vatten är vagnen direkt efter lokomotivet med ångpannan som dominerande del. English: Ljungström steam turbine locomotive of 1921
context_page_description: A steam turbine locomotive is a steam locomotive which transmits steam power to the wheels via a steam turbine. Numerous attempts at this type of locomotive were made, mostly without success. In the 1930s this type of locomotive was seen as a way both to revitalize steam power and challenge the diesel locomotives then being introduced.
context_section_description: Swedish engineer Fredrik Ljungström designed a number of steam turbine locomotives, some of which were highly successful.  His first attempt in 1921 was a rather odd-looking machine. Its three driving axles were located under the tender, and the cab and boiler sat on unpowered wheels.  As a result, only a small portion of the locomotive's weight contributed to traction.  In the mid-1920s, Ljungström filed a patent on a quill drive for a steam turbine locomotive.
  The second design was a 2-8-0 similar to a successful freight design.  Built in 1930 and 1936 by Nydqvist & Holm AB, these locomotives replaced conventional ones on the Grängesberg-Oxelösund Railway.  No condenser was fitted, as its complexity outweighed its thermodynamic advantages.  The wheels were driven by a jackshaft.  These engines were not retired until the 1950s when the line was electrified.  Three engines of this type were built, all three of which have been preserved.  These can currently be seen in the Railway Museum of Grängesberg, two (71 and 73) being owned by the Grängesbergbanornas Järnvägsmuseum (GBBJ) and the third (72) by the Swedish Railway Museum.
caption: Ljungström locomotive of 1921
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