BIOMIMETIC AIR DRAG REDUCTION DEVICE FOR FREIGHT VEHICLE

摘要

The present disclosure relates to an air drag reducing device for a freight vehicle for reducing air drag of a freight vehicle including a tractor and a trailer, the device comprising: a main body coupled to a roof of the tractor and including a streamlined curved surface; an air flow changing part protruding from the main body part to form a first curved surface and changing the flow of air flowing along the main body part on the roof of the tractor; an air flow control part protruding from the main body part to form a second curved surface having a curvature different from the curvature of the first curved surface and connected to the air flow changing part to control the air flow; and an extension part extending from the main body toward the ground and coupled to a rear surface of the tractor to partially or wholly block a space between the tractor and the trailer.