Crew Dragon Demo-2: Difference between revisions

Revision as of 13:41, 6 June 2020

Revision as of 13:47, 6 June 2020

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==Crew==

Douglas Hurley and Robert Behnken were announced as the primary crew on 3 August 2018.<ref name="nasa-20180803"/> Both astronauts are veterans of the Space Shuttle program,{{r|Forbes}} and the Demo-2 flight iswas the third trip to space for both of them. Hurley served as pilot on STS-135, thus flying on the last shuttle mission, and is piloting the first commercial crew mission. The lead Flight Director for this mission is [[Zebulon Scoville]].<ref>{{cite web|last1=Moran|first1=Norah|title=Ep 145: SpaceX Demo-2|url=https://www.nasa.gov/johnson/HWHAP/spacex-demo-2|website=NASA|date=21 May 2020}} {{PD-notice}}</ref> Additionally, the crew brought along a toy ''[[Apatosaurus]]'' dinosaur named "Tremor", a [[Ty]] flippables plush toy they had selected from their sons' toys. As in past space missions, the plush toy had been used as an indication of [[Weightlessness|zero gravity]] for the strapped-in astronauts. Behnken and Hurley said, "That was a super cool thing for us to get a chance to do for both of our sons who I hope are super excited to see their toys floating around with us on board".<ref>{{Cite web|title=NASA Live: Official Stream of NASA TV|url=https://www.youtube.com/watch?v=21X5lGlDOfg|last=|first=|date=31 May 2020 |website=YouTube|publisher=NASA|url-status=live|access-date=31 May 2020}} {{PD-notice}}</ref><ref>{{cite web|url=https://www.theverge.com/2020/5/30/21272222/spacex-launch-toy-stuffed-animal-dinosaur-zero-g-indicator|title=A cute stuffed dinosaur hitched a ride on SpaceX's historic launch|first=Mary Beth|last=Griggs|date=30 May 2020|accessdate=31 May 2020|work=[[The Verge]]}}</ref>

NASA calculated the Loss Of Crew (LOC) probability for the test flight as 1-in-276, lower than the commercial crew program requirement threshold of 1-in-270. The 1-in-276 number includes mitigations to reduce the risk, such as on-orbit inspections of the Crew Dragon spacecraft once it is docked at the space station to look for damage from [[micrometeoroid]]s and [[Space debris|orbital debris]] (MMOD). NASA pegs the overall risk of a Loss Of Mission (LOM) as 1-in-60. That risk covers scenarios where the Crew Dragon does not reach the space station as planned, but the crew safely returns to Earth.<ref>{{cite web |url=https://spaceflightnow.com/2020/05/20/falcon-9-crew-dragon-demo-2-launch-preps/|title=Live coverage: All systems go for launch after final Crew Dragon readiness review|date=25 May 2020|accessdate=27 May 2020}}</ref> NASA astronaut [[Kjell Lindgren]] was the sole backup crew member for the flight, backing up both Hurley and Behnken for the mission.<ref>{{Cite web|title=NASA and SpaceX plan to launch the first astronauts from US soil in nearly a decade on 27 May 2020, Business Insider - Business Insider Singapore|url=https://www.businessinsider.sg/nasa-spacex-astronaut-launch-date-time-commercial-crew-dragon-4 |last=Mosher|first=Dave|date=17 April 2020|website=Business Insider|url-status=live|archive-url=|archive-date=|access-date=31 May 2020}}</ref>