Editing Alliant Techsystems (section)

====James Webb Space Telescope====
{{Main|James Webb Space Telescope}}
[[File:James Webb Space Telescope 2009 top.jpg|thumb|left|3/4 view of JWST from the "top" (opposite side from the Sun)]]
ATK worked with [[Northrop Grumman]] to produce the backplane support frame (BSF) for the James Webb Space Telescope. The BSF, center section, and wings form what is called the primary mirror backplane support system (PMBSS). The BSF is the primary load-bearing structure during launch and the PMBSS holds the telescope's main instruments, including its mirrors. The BSF was designed and manufactured at ATK's facilities in Magna, Utah. ATK designed and fabricated more than 10,000 parts for the PMBSS. PMBSS is made primarily of lightweight graphite, but numerous other materials including [[invar]], [[titanium]], and other composite materials were used.<ref name="Webb1">{{cite web|url=http://spaceref.biz/2013/06/northrop-grumman-atk-complete-backbone-of-nasas-james-webb-space-telescope.html|title=Northrop Grumman, ATK Complete Backbone of NASA's James Webb Space Telescope|access-date=June 12, 2015|archive-date=April 3, 2015|archive-url=https://web.archive.org/web/20150403195825/http://spaceref.biz/2013/06/northrop-grumman-atk-complete-backbone-of-nasas-james-webb-space-telescope.html|url-status=dead}}</ref>