| 摘要 |
<p>An assembly for use by pilots of military aircraft, including a helmet (10) with a shell and a visor (18) for placing over the eyes. A central portion of the visor is shaped so that, at any point, the minimum radius of curvature is substantially in a vertical plane while the maximum radius of curvature is in a plane substantially orthogonal thereto. The radius of curvature of the visor in the horizontal plane is of 110-145 mm and its radius of curvature in a vertical plane parallel to the central plane of the helmet varies from around 135 mm in the middle to around 75 mm at the sides.</p> |
