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Streamlining of train sides and underfloor areas |
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evaluated |
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A great part of the air resistance is due to surface friction along the train sides and roofs, and to the air drag of the underfloor equipment. There is some potential for improvement by streamlining the outer shell, optimising coach transition areas and underskirting.
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Technology field: Aerodynamics and friction
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General information
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General criteria
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Environmental criteria
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Impacts on energy efficiency:
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Energy efficiency potential for single vehicle: 2 - 5% |
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Energy efficiency potential throughout fleet: < 1% |
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According to European Transport Consult, in some high speed trains up to 3 % of the energy consumption could be saved by underskirting alone.
However, some of the optimisation potential is of rather theoretical nature and difficult to realize. Therefore, the fleet-wide potential is estimated to be below 1%. |
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Other environmental impacts: neutral |
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(no details available) |
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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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