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Space shake-out

发布时间:2019-03-07 01:15:06来源:未知点击:

A vibration-testing system at NASA’s JPL lab in Pasadena ran amok last week, shaking a $40-million satellite 10 times harder than it was supposed to, breaking two solar panels and damaging the craft. Designed to test the satellite’s fortitude under launch stresses, the system shook it with a force of 20 g. An investigation is under way. The High Energy Solar Spectroscopic Imager (HESSI), built to study solar flares, was to launch in July,