mardi 19 juillet 2011

Atlantis Undocks from International Space Station












NASA - STS-135 Mission patch.

Jul 19,2011

At 2:28 a.m. EDT, space shuttle Atlantis undocked from the International Space Station while the spacecraft were 243 miles above the Pacific, east of Christchurch, New Zealand. Atlantis spent eight days, 15 hours and 21 minutes attached to the orbiting laboratory.

Over the 37 missions devoted to assembling and maintaining the space station, shuttles were docked for 276 days, 11 hours and 23 minutes – almost 40 weeks.


Image above: Space shuttle Atlantis is seen from the International Space Station shortly after undocking. Photo credit: NASA TV.

Pilot Doug Hurley now is moving Atlantis to a distance of 600 feet in front of the complex, where he will halt the shuttle for 27 minutes while the space station yaws 90 degrees to present its longitudinal axis to Atlantis. This will provide Mission Specialists Rex Walheim and Sandy Magnus the opportunity to snap digital pictures of the station from angles the shuttle never has seen before during a fly-around. Hurley will move Atlantis to a point 600 feet above the station, and then behind it. He then will fire Atlantis’ thrusters to move below the station, and at 4:18 a.m. he will perform a final separation burn to depart the vicinity of the station.

STS-135 Undocking

With the two spacecraft separated, Atlantis’ crew will focus on preparing for landing at Kennedy Space Center early Thursday morning. The time of landing has changed slightly, to 5:56 a.m. EDT. Ground tracks have been posted here: http://1.usa.gov/qtBmwx

Crew Completes Late Inspection

Space shuttle Atlantis’ crew completed today's inspection of the shuttle's thermal protection system at 10:30 a.m. EDT. They used the 50-foot long Orbiter Boom Sensor System to conduct a high fidelity, three-dimensional scan of areas of the shuttle that experience the highest heating during entry—the wing leading edges and nose cap. Managers and engineers in Mission Control will review the data today and tomorrow to validate the heat shield’s integrity.

Space Shuttle Atlantis' final flyaround of the International Space Station

This marks the final use of the shuttle’s robotic arm, dating back to its inaugural flight on the shuttle Challenger in April 1983 on the STS-7 mission, operated by the first American woman to fly in space, Sally Ride.

Space shuttle Atlantis lifted off July 8 on the final flight of the shuttle program, STS-135, a 12-day mission to the International Space Station. Atlantis carries a crew of four and the Raffaello multipurpose logistics module containing supplies and spare parts for the space station. The STS-135 astronauts are: Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Sandy Magnus and Rex Walheim.

Learn more about the crew: http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html

Images, Videos, Text, Credits: NASA / KSC / NASA TV / Youtube.

Best regards, Orbiter.ch