环绕声-猎户座阿尔特弥斯1号服务舱正在接受声学测试

上周，美国宇航局阿耳忒弥斯(Artemis)1号任务的服务舱在位于佛罗里达州的NASA肯尼迪航天中心的操作和校验大楼内完成了声学测试。此次测试是为NASA在太空发射系统(SLS)火箭上的猎户座无人飞行测试做准备的最新一步。

测试团队于2019年5月25日完成测试，技术人员将分析测试期间收集的数据，以检查声学环境发现的缺陷。在测试过程中，工程师将服务舱固定在测试单元内，然后将麦克风、应变仪和加速度计连接到服务舱上。他们进行了五项测试，声音水平从128分贝到140分贝不等，与飞机起飞时喷气发动机发出的声音一样大。

阿尔特弥斯1号将是SLS火箭在肯尼迪的39B发射台发射猎户座飞船的第一个任务。该任务将使猎户座飞船在月球数千英里外进行大约三周的试飞。猎户座将返回地球，并溅落在加利福尼亚海岸外的太平洋上，在那里它将被取回并返回肯尼迪航天中心。

Orion’s service module for NASA’s Artemis 1 mission completed acoustic testing inside the Operations and Checkout Building at NASA’s Kennedy Space Center in Florida last week. The tests were the latest step in preparing for the agency’s first uncrewed flight test of Orion on the Space Launch System (SLS) rocket.

Teams completed the test May 25, 2019, and technicians will analyze the data collected during the tests to check for flaws uncovered by the acoustic environment. During the testing, engineers secured the service module inside the test cell and then attached microphones, strain gauges and accelerometers to it. They conducted a series of five tests, with acoustic levels ranging from 128 to 140 decibels – as loud as a jet engine during takeoff.

Artemis 1 will be the first mission launching Orion on the SLS rocket from Kennedy’s Launch Pad 39B. The mission will take Orion thousands of miles past the Moon on an approximately three-week test flight. Orion will return to Earth and splashdown in the Pacific Ocean off the coast of California, where it will be retrieved and returned to Kennedy.

Photo credit: NASA/Frank Michaux