3D打印,也称为增材制造,是提升空间飞行器设计的一个关键技术,使火星探测变得经济实惠。3D打印做过最复杂的火箭发动机部件之一就是涡轮泵,其在阿拉巴马州亨茨维尔的美国航空航天局马歇尔太空飞行中心的一个成功的系列液态氢推进剂测试中以超过90 000 r/min的速度运转。美国航空航天局的专家 3D printing, also known as additive manufacturing, is a key technology in spacecraft design that will make Mars exploration economically viable. One of the most complex rocket engine components ever made in 3D printing is the turbopump, which was tested in a successful series of liquid hydrogen propellant tests at the NASA Marshall Space Flight Center at Huntsville, Alabama, at more than 90,000 r / min speed of operation. NASA expert