Editing Wind tunnel (section)

===Low speed tunnels===
Wind tunnels have been used to test sporting equipment including golf clubs, golf balls, bobsleds, cyclists, and race car helmets. Helmet aerodynamics are particularly important in open cockpit race cars such as Indycar and Formula One. Aerodynamic forces on the helmet at high speeds can cause considerable neck strain on the driver; and flow separation on the back side of the helmet can cause turbulent buffeting and thus blurred vision for the driver.<ref>{{Cite web|title=Racing Helmet Design|author=James C. Paul, P.E. |publisher=[[Airflow Sciences Corporation]]|url=http://www.airflowsciences.com/sites/default/files/casestudies/Racing_Helmet_Design.pdf |archive-url=https://web.archive.org/web/20180420010409/http://www.airflowsciences.com/sites/default/files/casestudies/Racing_Helmet_Design.pdf |archive-date=2018-04-20 |url-status=live}}</ref>

Other problems are also studied with wind tunnels. The effects of wind on man-made structures need to be studied when buildings became tall enough to be significantly affected by the wind. Very tall buildings present large surfaces to the wind, and the resulting forces have to be resisted by the building's internal structure or else the building will collapse. Determining such forces was required before [[building code]]s could specify the required strength of such buildings and [[Wind engineering|these tests]] continue to be used for large or unusual buildings.