| 摘要 |
Provided is a shuttle in which its skirt part can be quickly recovered when the skirt part is collapsed. The shuttle includes a cap and a skirt part in which an air passage hole is formed. The skirt part has a rib adjacent to the rear end of the air passage hole in the generating line direction of the skirt part. The rib has such a shape that an air pressure difference between the air flow flowing inside the rib with passing through the air flow hole and the air flow flowing outside the rib without flowing through the air flow hole is produced, whereby an aerodynamic force directed from the inside to the outside is generated. |
