| 摘要 |
The streamlined fairing adapted to be mounted on a roof of a cab portion of a land vehicle including a trailing body for reducing aerodynamic drag comprises a bottom portion and rear portion and a nose portion. A continuous contoured surface extends widthwise and upwards from the nose portion to the rear portion and having a top portion and side portions which abut at their respective boundaries. The top portion has at least a segment a tangential plane of which is inclined with respect to the horizontal at an angle which is less than or equal to approx. tan -1 (2(H-h/x) and greater than or equal to zero. H represents the vertical distance from the roof of the cabl portion to a top wall of the trailing body, h represents the height of the fairing, x represents the distance between the rear portion of the fairing and the front of the trailing body, h has a value greater than or equal to about .9H and less than H. |
