7 p.m. CST Monday, Feb. 28, 2011
Mission Control Center, Houston, Texas
STS-133 MCC Status Report #09
HOUSTON – Discovery spacewalkers wrapped up a six-hour, 34-minute spacewalk Monday, moving a failed 800-pound ammonia pump module, installing an extension cable and extending the rail track along the station’s main truss.
Mission Specialists Steve Bowen and Al Drew also moved a pump module vent tool, installed a camera wedge, relocated a tool stanchion and worked with a Japanese project to bring a bit of space back to Earth.
After the spacewalk, spacecraft communicator Stanley Love radioed the joint crew that mission managers have approved an extra day for the shuttle mission to set up the new Permanent Multipurpose Module that will be installed on the Unity module’s Earth-facing port tomorrow. The International Space Station mission management team is expected to make a decision Tuesday about a proposed Soyuz fly-about later in the mission.
Mission Specialist Nicole Stott helped coach the spacewalkers from inside the station, while Mission Specialist Michael Barratt and station Commander Scott Kelly operated the station’s Canadarm2 for the spacewalk. Astronaut Tim Kopra, who had been scheduled to be one of the spacewalkers himself before being hurt in a bicycle accident weeks before launch, joined Love on console in the station flight control room.
The excursion began at 9:46 a.m. CST when the spacewalkers switched their suits to battery power. The first task was to install the extension cable between the Unity and Tranquility nodes. That included work in an area that will be inaccessible after the Leonardo Permanent Multipurpose Module is in place.
Drew then retrieved a tool to be used on Wednesday’s spacewalk to remove ammonia from the failed pump. Bowen installed a foot restraint on the station arm to get ready for the module’s move from the arm’s mobile base to a more permanent position on an external stowage platform near the airlock. The work was delayed slightly by a problem with the robotic arm controls in the cupola, but Barratt and Kelly moved to a duplicate control center in the Destiny Laboratory to complete their work with Canadarm2.
The astronauts then removed tether and cart stoppers along the railway of the mobile transporter, and lengthened the track with an extension on each rail.
Near the end of the spacewalk both astronauts worked with the Japanese “Message in a Bottle.” They opened a metal canister, autographed by astronauts, to capture a bit of the vacuum of space, then sealed it. The canister will return on Discovery for display.
The spacewalk was the sixth for Bowen and the first for Drew. On leaving the airlock, Drew became the 200th human to walk in space.
Inside the shuttle and station, transfer of equipment continued between the docked spacecraft. The extra day will allow more time to transfer supplies and leave the station in the best possible posture.
With the one-day extension in place, the winners of the "Top 40 Song Contest" now are set to be played early next week. On Monday, March 7, the "Theme from Star Trek," which finished second in the contest, will serve as a wake-up song for the shuttle crew. On Tuesday, March 8, "Blue Sky" by Big Head Todd and the Monsters will be played as the most requested song to wake up shuttle Discovery's crew.
For the planned wakeup times, reference the mission television schedule: http://www.nasa.gov/shuttletv
For daily STS-133 mission recap videos, visit: http://www.nasa.gov/video
The next status report will be issued after crew wakeup, which is scheduled for 4:53 a.m. Tuesday, or earlier if warranted.
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