[sarex] Power Transfer System Activated
azrowe80 at verizon.net
Sat Aug 11 03:36:41 PDT 2007
SUBMITTED BY ARTHUR N1ORC - AMSAT A/C #31468
*Power Transfer System Activated*
Image above: The STS-118 and Expedition 15 crews greet each other after
hatch opening. Image: NASA TV
TO VIEW IMAGE GO
The STS-118 and Expedition 15 crews are conducting joint operations
aboard Space Shuttle Endeavour and the International Space Station.
Also, the crew activated the Station-to-Shuttle Power Transfer System
(SSPTS) at 5:17 p.m. EDT Friday.
These activities began within hours of STS-118’s arrival at the space
station. Endeavour docked with the station at 2:02 p.m. and the STS-118
was welcomed aboard the station at 4:04 p.m.
Animations: + Approach to Station
| + Backflip
| + Docking
The SSPTS is designed to reroute power from the station to a visiting
shuttle. If the transfer system works as expected, mission managers
could elect to extend STS-118’s mission from 11 to 14 days and increase
the number of spacewalks from three to four. A decision on a possible
extension could occur Sunday.
The two crews are preparing for STS-118's first spacewalk, which is set
to begin at 12:31 p.m.(1631 UTC) Saturday. The spacewalkers will assist
in the installation and activation of the Starboard 5 (S5) truss.
Friday’s preparations included transfer of spacewalk equipment and the
review of procedures. Also, the two crews used the shuttle robot arm to
lift the S5 out of the payload bay and hand it off to the station
The two spacewalkers, Mission Specialists Rick Mastracchio and Dave
Williams, will enter the station’s Quest airlock where they will spend
the night. This procedure is performed to help prevent decompression
+ View Barbara Morgan Video
+ STS-118 Mission Overview
+ STS-118 Fact Sheet (900 Kb PDF)
+ STS-118 NASA TV Schedule
+ STS-118 Briefing Animations
+ STS-117 Mission Archive
More information about the SAREX