| 摘要 |
PURPOSE: A tube for reducing aerodynamic force is provided to reduce aerodynamic force applied to a vehicle for cargo transportation by obtaining transportation path of a cargo vehicle under the ground and simultaneously obtaining air flow paths. CONSTITUTION: A tube for reducing aerodynamic force(100) comprises a pipe shaped tube body(110) and multiple air flowing holes(114). The air flowing holes are formed in an inner surface of the tube body so that air can flow into a hollow space of the tube body. The tube body comprises a first pipe and a second pipe. The first pipe forms the inner surface of the tube body and comprises the multiple air flowing holes. The second pipe forms the hollow space of the tube body and surrounds an outer circumference of the first pipe to form an outer surface of the tube body. |
