"Spacecraft systems" refers to the various components and technologies that are used in a spacecraft to enable it to function properly and carry out its mission in outer space. Full definition
Our robotic spacecraft systems will collapse the cost of access to the Moon, introduce a new commercial paradigm for government missions, democratize lunar research and exploration, and blaze the trail for commercial space transportation and exploration beyond Earth's orbit. (moonexpress.com)
The controllers in charge of Apollo spacecraft systems sat in the second row. (discovermagazine.com)
The binoculars were so they could see [spacecraft system] data on the TV screens.» (discovermagazine.com)