Aerodynamic Forces on Freight Trains-Volume IV Wind Tunnel Tests of Freight Cars and New Trailer and Container Car Designs
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1979-06-01
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Edition:Vol 4
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Abstract:The aerodynamics of freight trains has been the subject of a series of reports in a continuing investigation. Volume 1 reported on a wind tunnel investigation of trailer on flatcar and container on flatcar tests; Volume 2, a full-scale test of trailers on flatcars; and Volume 3 covered the correlation of the full-scale tests and wind tunnel tests. This Volume 4 reports on a wind tunnel investigation of a variety of freight car, locomotive, and new trailer and container car configurations. Aerodynamic forces have been measured on a variety of different railroad freight car configurations. The first configuration consisted of blocks arranged in a train and the tests were to obtain information on the interaction between the blocks for different spacings and height. Next, a series of railroad freight cars and locomotives were tested to obtain aerodynamic forces on them, both in a train of similar cars and with different cars. All cars were tested with a flatcar in the leading and trailing positions as a measure of the largest forces that might occur. The final series of tests were for various new railroad cars designed for trailers and containers. These cars were tested with their different design loadings.
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