Fig. 2From: Drag reducing nose fairings for existing freight train locomotivesTop, front, side, and isometric views for the primary fairing shape. The shape is governed by three parametric design variables: fairing length (x1A), tip height (x2A), and tip width (x3A). The overall fairing width, height, and the gap between the fairing and locomotive remain constant from one fairing geometry to the nextBack to article page