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Progress to Launch to International Space Station

Press Release From: NASA HQ
Posted: Wednesday, May 9, 2007

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A new Progress freighter is scheduled to launch to the International Space Station at 11:25 p.m. EDT Friday, May 11, with more than 2.5 tons of fuel, air, water and other supplies and equipment aboard.

The station's 25th Progress unpiloted cargo carrier will bring to the orbiting laboratory more than 1,050 pounds of propellant, almost 100 pounds of air, more than 925 pounds of water and 3,042 pounds of dry cargo a total of 5,125 pounds.

P25 will launch from the Baikonur Cosmodrome in Kazakhstan. It is scheduled to dock with the station Tuesday, May 15, at about 1:10 a.m.

The spacecraft will use the automated Kurs system to dock at the aft port of the Zvezda Service Module. Expedition 15 Commander Fyodor Yurchikhin will be at the manual Toru docking system controls, should his intervention become necessary.

Expedition 15 crew members, Yurchikhin and flight engineers Sunita Williams and Oleg Kotov, will continue to use oxygen from the Progress 24 at the Pirs Docking Compartment. It is scheduled to remain there until mid-August.

Once its cargo is unloaded, P25 will be filled with trash and station discards. It is scheduled to be undocked, deorbited and incinerated on re-entry on July 20.

The Progress is similar in appearance and some design elements to the Soyuz spacecraft, which brings crew members to the station, serves as a lifeboat while they are there and returns them to Earth. The aft module, the instrumentation and propulsion module, is nearly identical.

But the second of the three Progress sections is a refueling module, and the third, uppermost as the Progress sits on the launch pad, is a cargo module. On the Soyuz, the descent module, where the crew is seated on launch and which returns them to Earth, is the middle module and the third is called the orbital module.

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