公开(公告)号：US20040112353A1

公开(公告)日：2004-06-17

申请号：US10321294

申请日：2002-12-17

Applicant: Haag Engineering Co.

Inventor： John David Stewart ,  Scott James Morrison ,  Johnie Pollard Spruiell ,  Matthew John Sitzmann ,  Patrick Thomas Price ,  Steven Richard Smith

IPC: F41B007/00

CPC classification number: G01N3/307 ,  F41B3/005 ,  F41B7/00 ,  G01N3/567

Abstract: An ice ball launcher simulates the impact of a storm-generated hailstone falling onto a test specimen or structural component exhibit such as a roofing shingle, skylight, automobile panel, aircraft fuselage panel, aircraft wing panel and the like. The launcher includes a tripod base, a rail, a sled, an ice ball holder cup, a manually operable trigger latch assembly, an elastic band and a laser beam aiming device. The ice ball launcher consistently and repeatably projects ice balls at a predetermined velocity and impact energy onto the component sample. The velocity of each ice ball is measured as it transits from the ice ball launcher to the installation mockup, verifying that the ice ball velocity is within a predetermined velocity tolerance range. The measured velocity and known mass of the ice ball are used to calculate the kinetic impact energy on the component sample material, and to determine whether the calculated impact energy is within a predetermined impact energy tolerance range.

Abstract translation: 冰球发射器模拟落在试样或结构部件表面上的风暴产生的冰雹的影响，例如屋顶瓦，天窗，汽车面板，飞机机身面板，飞机机翼板等。 发射器包括三脚架基座，轨道，雪橇，冰球保持杯，手动操作的触发闩锁组件，弹性带和激光束瞄准装置。 冰球发射器一致地重复地以预定的速度投射冰球，并将能量冲击到组件样品上。 当冰球从冰球发射器转移到安装模型时，测量每个冰球的速度，验证冰球速度在预定的速度公差范围内。 测量的冰球的速度和已知质量用于计算组件样品材料的动能冲击能量，并确定计算的冲击能量是否在预定的冲击能量容差范围内。