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Influence of head and tail wind on the braking distance of trains and single vehicles
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STANDARD published on 1.12.2011
Designation standards: UIC B126/DT422-1ed.
Publication date standards: 1.12.2011
SKU: NS-1190169
The number of pages: 36
Approximate weight : 108 g (0.24 lbs)
Country: International technical standard
Category: Technical standards UIC
Speed and direction of the wind influences the trains longitudinal running resistance (resistance to forward movement). Also the train stopping distance during a brake application is influenced by the presence of wind. A model to estimate the influence of wind speed on stopping distances for different types of rolling stock is presented in the case of pure head or tail wind condition. Due to the limited validity of the model used, the behaviour of different types of rolling stock is compared under these two sets of wind conditions only (yaw angle equal to 0° and 180°), although ERRI wind tunnel tests (see ERRI report A168 RP3) demonstrate that drag is not at maximum under these wind conditions and these conditions therefore do not represent the worst-case scenario. "+ "
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