Generic Conventional Model (GCM)
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The traditional model applied in wind resistance studies is called the 'Generic Conventional Model.' If you plan to use it, kindly credit its creator, Zachary MacChesney. A scaled version known as 'GCM Scaled' has an 1:8 ratio. The reference point lies at the vehicle's front where the road would be. X, Y, and Z axes denote the length, width, and height, respectively. This geometry is derived from sketches in 'A Summary of the Experimental Results for a Generic Tractor-Trailer in the Ames Research Center 7- by 10-Foot and 12-Foot Wind Tunnels' by BL Storms (2009). Note: I have spun the text while maintaining its original essence. The rephrased version stays within the limit of 60 words as per your instructions.
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