自行车比赛用头盔 1985年,美国自行车联合会(USCF)规定所有参加自行车比赛的运动员都必须戴符合美国国家安全研究所标准的头盔。对于现有的自行车比赛用头盔,大部分运动员都感到戴上以后又热又重,不利于快速行驶。因而社会上迫切需要使用一种既重量轻、凉快,又合乎气动力要求的头盔。美国人金特斯(Gentes)在NASA阿姆斯航天中心的协助下,参照NACA(NASA的前身)在第二次 Helmets for Bicycle Races In 1985, the American Cycling Federation (USCF) stipulated that all athletes participating in a bicycle race must wear helmets that meet NSS standards. For existing bicycle racing helmets, most athletes feel hot and heavy after wearing them, which is not good for driving fast. Therefore, there is an urgent need in the community to use a helmet that is lightweight, cool and aerodynamic. The American Gentes, assisted by the NASA Armstrong Center, referred to NACA (NASA’s predecessor) for the second time