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Streamlining of head and tail |
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evaluated |
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In a long passenger train only about 10% of the aerodynamic drag are due to the front and tail ends. Nevertheless, there is some potential for further improvements on the aerodynamics of the front nose of high-speed trains.
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Technology field: Aerodynamics and friction
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General information
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Description
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In a long passenger train only about 10% of the aerodynamic drag are due to the front and tail ends. Their importance for aerodynamic resistance is much less
than commonly believed. They do however have more relevance in short trains, where they gain relative importance compared components of air drag being proportional to length, such as sides, roofs and bogies.
There are efforts at DB AG and other railways to optimise nose shape of high speed trains. However, these efforts usually aim at side wind effects rather than aerodynamic drag. Nevertheless studies indicate that there is still some potential for air drag reduction. |
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General criteria
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Environmental criteria
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Economic criteria
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Application outside railway sector (this technology is railway specific)
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Overall rating
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date created: 2002-10-09 |
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© UIC - International Union of Railways 2003 |
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