An unmanned
cargo ship packed with supplies launched toward the International
Space Station (ISS) Saturday, one week before a NASA space shuttle is
expected to make the same trip.
The Russian-built
Progress 22 supply ship rocketed into space at 11:08 a.m. EDT (1508 GMT) atop a
Soyuz booster that lifted off from the Central Asian Baikonur Cosmodrome
spaceport in Kazakhstan.
NASA
officials said the launch was on time and marked the start of a two-day trek to
the ISS for Progress 22.
"The
Progress spacecraft detached from the third stage launcher," Valery Lyndin,
head of the mission control press center for Russia's Federal Space Agency,
told the Russian news agency Interfax. "It was placed in orbit; Its
parameters are close to those planned."
Progress 22
is carrying more than 2.5 tons of food, water, equipment and experiments to ISS
Expedition
13 commander Pavel
Vinogradov and flight engineer Jeffrey
Williams. The cargo ship is scheduled to dock at the space station's
Russian-built Pirs docking compartment at 12:30 p.m. EDT (1630 GMT) on June 26.
More than
5,090 pounds (2,308 kilograms) of cargo rest in Progress 22's hold. Tucked
among those supplies are more than 1,900 pounds (861 kilograms) of propellant,
100 pounds (45 kilograms) of air and oxygen, and almost 250 pounds (113
kilograms) of water. Nearly 2,859 pounds (1,296 kilograms) of new tools,
clothing and other dry cargo is also included on the manifest.
NASA
spokesperson Rob Navias, aft the agency's Johnson Space Center, told SPACE.com
that Vinogradov and Williams will only partially unpack Progress 22 once it
arrives at the ISS.
The astronauts
will leave the least critical items inside Progress 22 until after NASA's STS-121
space shuttle mission - the second orbiter test flight since the 2003
Columbia accident - is completed.
Set to
launch July 1 with shuttle veteran Steven Lindsey in command, NASA's
seven-astronaut STS-121 crew will deliver a cargo module full of new supplies,
equipment and other supplies to the ISS.
Among the shuttle crew is European Space Agency (ESA)
astronaut Thomas Reiter, who will join the Expedition 13 and upcoming
Expedition 14 missions aboard the space station.
Two other
Russian spacecraft are already docked at the ISS. Progress
21 arrived on April 23 at the aft end of the station's Zvezda service
module, while the Soyuz spacecraft that brought
Vinogradov and Williams to the ISS remains parked at a port on the
Russian-built Zarya control module. A previous cargo ship - Progress
20 - left the ISS on June
19.
Vinogradov
and Williams are in the middle of a six-month mission to the ISS and have lived
aboard the orbital lab since April 1.