Linux range of use: Difference between revisions

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=== In space ===

[[SpaceX]] uses multiple redundant [[:Category:Avionics computers|flight computers]] in a [[fault-tolerant design]] in its [[Falcon&nbsp;9]] rocket. Each Merlin engine is controlled by three [[Voting logic|voting]] computers, with two physical processors per computer that constantly check each other's operation. Linux is not inherently fault-tolerant (no operating system is, as it is a function of the whole system including the hardware), but the flight computer software makes it so for its purpose.<ref name=aw20121118/> For flexibility, [[commercial off-the-shelf]] parts and system-wide "radiation-tolerant" design are used instead of [[radiation hardened]] parts.<ref name=aw20121118>{{cite news|last=Svitak |first=Amy |title=Dragon's "Radiation-Tolerant" Design |url=http://www.aviationweek.com/Blogs.aspx?plckBlogId=Blog%3a04ce340e-4b63-4d23-9695-d49ab661f385&plckPostId=Blog%3a04ce340e-4b63-4d23-9695-d49ab661f385Post%3aa8b87703-93f9-4cdf-885f-9429605e14df |access-date=November 22, 2012 |newspaper=Aviation Week |date=November 18, 2012 |archive-url=https://web.archive.org/web/20131203204735/http://www.aviationweek.com/Blogs.aspx?plckBlogId=Blog%3A04ce340e-4b63-4d23-9695-d49ab661f385&plckPostId=Blog%3A04ce340e-4b63-4d23-9695-d49ab661f385Post%3Aa8b87703-93f9-4cdf-885f-9429605e14df |archive-date=December 3, 2013 |url-status=dead }}</ref> {{As of|July 2019}}, SpaceX has conducted over [[List of Falcon 9 and Falcon Heavy launches|76 launches]] of the Falcon&nbsp;9 since 2010, out of which all but one have successfully delivered their primary payloads to the intended [[orbit]], and has used it to transport astronauts to the [[International Space Station]]. The [[SpaceX Dragon 2|Dragon 2]] crew capsule also uses Linux.<ref>{{Cite web|url=https://www.zdnet.com/google-amp/article/from-earth-to-orbit-with-linux-and-spacex/|title=From Earth to orbit with Linux and SpaceX &#124; ZDNet|website=www.zdnet.com[[ZDNet]]}}</ref>

Windows was deployed as the operating system on non-mission critical laptops used on the space station, but it was later replaced with Linux. [[Robonaut#Robonaut 2|Robonaut 2]], the first humanoid robot in space, is also Linux-based.<ref name="LinuxMigration">{{cite web |title=Linux Foundation Training Prepares the International Space Station for Linux Migration |url=https://training.linuxfoundation.org/solutions/corporate-solutions/success-stories/linux-foundation-training-prepares-the-international-space-station-for-linux-migration/ |publisher=The Linux Foundation |access-date=September 1, 2019}}</ref>