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Progress Docks With Station

July 5, 2010

The ISS Progress 38 cargo resupply ship successfully docked to the aft end of the International Space Station’s Zvezda service module at 12:17 p.m. EDT Sunday. The docking was executed flawlessly by Progress’ Kurs automated rendezvous system.

The Progress spacecraft carries 1,918 pounds of propellant, 110 pounds of oxygen, 220 pounds of water and 2,667 pounds of experiment equipment, spare parts and other supplies to the station. It launched from the Baikonur Cosmodrome in Kazakhstan on June 30. An attempted docking Friday, July 2, was aborted when telemetry between the Progress and the space station was lost about 25 minutes before its planned docking.

The most likely cause of Friday’s aborted docking was traced to the activation of the TORU “Klest” TV transmitter, which created interference with TORU itself, causing a loss of the TORU command link between Progress and the International Space Station that triggered the abort of the Progress docking. TORU was not activated for today’s docking. The TORU TV system is designed to provide a view of Zvezda’s docking target to station Commander Alexander Skvorstov, if he had to operate a joystick in the service module to dock Progress manually.

The Expedition 24 crew members monitored the arrival of the spacecraft. The crew will enjoy an off-duty day Monday in observance of the U.S. Independence Day holiday.

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