Editing Spacelab (section)

===Igloo===
On spaceflights where a habitable module was not flown, but pallets were flown, a pressurized cylinder known as the ''Igloo'' carried the subsystems needed to operate the Spacelab equipment.<ref name=HS-book>{{cite book |title=Human Spaceflight |author=Joseph A. Angelo |publisher=Infobase Publishing |page=[https://archive.org/details/humanspaceflight0000ange/page/272 p. 272] |date=2007 |isbn=978-0-8160-5775-7 |url=https://archive.org/details/humanspaceflight0000ange/page/272}}</ref> The Igloo was {{cvt|3|m}} tall, had a diameter of {{cvt|1.5|m}}, and weighed {{cvt|1100|kg}}.<ref name=NASM>{{cite web |url=http://www.nasm.si.edu/collections/artifact.cfm?id=A19990001003 |title=Spacelab Subsystems Igloo |publisher=National Air and Space Museum |access-date=23 November 2010}}</ref> Two Igloo units were manufactured, both by [[Belgium]] company [[Société Anonyme Belge de Constructions Aéronautiques|SABCA]], and both were used on spaceflights.<ref name=NASM/> An Igloo component was flown on [[STS-51-F |Spacelab 2]], [[STS-35|ASTRO-1]], ATLAS-1, ATLAS-2, ATLAS-3, and ASTRO-2.<ref name=NASM/>

A Spacelab Igloo is on display at the James S. McDonnell Space Hangar at the [[Steven F. Udvar-Hazy Center]] in the US.<ref>{{cite news |url=https://airandspace.si.edu/collection-objects/spacelab-subsystems-igloo |title=Spacelab, Subsystems Igloo |date=2016-04-09 |work=National Air and Space Museum |access-date=2018-07-15}}</ref>