Inflight sessions included the same tasks as the preflight and postflight BDC sessions along with set-up and stowage of associated equipment. Four sessions were planned, with the first session on flight day 10, the second and third session at mid-flight, and a final session within 1-2 weeks before landing. During the tasks subjects were free-floating to minimize orientation and cognitive reference cues.
Over a three-year period, pre-, in-, and post- flight data were collected on eight International Space Station (ISS) crewmembers. The results include the following: 1) A 3D cube with smaller height than width is perceived as a perfect cube in-flight; 2) Hand drawn objects in-flight have greater height and smaller width than on the ground. Words written vertically in-flight are shorter (total vertical length of the word) than pre-flight, but longer immediately after return; and 3) Vertical distances are overestimated on Earth, but not late in-flight, and shorter distances ranging from 100-1000 feet, are underestimated.
|Mission||Launch/Start Date||Landing/End Date||Duration|
|Expedition 17||04/08/2008||10/23/2008||198 days|
|Expedition 18||10/12/2008||04/17/2009||187 days|
|Expedition 19||03/26/2009||10/11/2009||199 days|
|Expedition 20||05/27/2009||10/11/2009||137 days|
|Expedition 21||10/11/2009||12/01/2009||51 days|
|Expedition 22||11/30/2009||03/18/2010||109 days|
|Expedition 23||03/18/2010||06/01/2010||75 days|
|Expedition 26||11/26/2010||03/16/2011||111 days|
|Expedition 27||03/14/2011||05/23/2011||70 days|
|Expedition 28||05/23/2011||09/15/2011||115 days|
|Expedition 29||09/16/2011||11/21/2011||40 days|