| 摘要 |
A bicycle helmet can include at least one ventilation opening and an exhaust port such that airflow enters the helmet through the ventilation opening and exits through the exhaust port, providing ventilation for a user. The orientation and location of the ventilation openings can reduce the aerodynamic drag of the helmet by delaying flow separation from the surface of the helmet and prevent airflow stagnation around the user's shoulders and neck. |
