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May 26, 5:47 PM EDT

NASA hits snag while inflating new room at space station



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CAPE CANAVERAL, Fla. (AP) -- NASA hit a snag while trying to inflate an experimental room at the International Space Station on Thursday and put everything on indefinite hold.

Mission Control ordered astronaut Jeffrey Williams to call it quits after the operation had dragged on for more than two hours, with the compartment barely expanding - just a few inches. Later in the day, NASA said engineers wanted to keep monitoring the compartment for any structural changes, and so another inflation try would not be made Friday.

"Thanks for all your patience today," Mission Control radioed.

"That's space business," Williams replied.

NASA insisted that the six-man crew was safe and that both the space station and the semi-inflated pod outside were in a stable position.

It was supposed to take barely an hour for the commercial test chamber known as BEAM - the world's first inflatable room for astronauts - to swell four times in volume.

Everything went smoothly at first as Williams briefly opened a valve, allowing air to slowly flow into BEAM, short for Bigelow Expandable Activity Module. He did that four more times before Mission Control told him to stop because the room had barely inflated.

After a lengthy pause and another try, NASA called the whole thing off and engineers huddled at Johnson Space Center in Houston to try to figure out why BEAM hadn't expanded properly.

BEAM is the creation of Bigelow Aerospace, founded by hotel entrepreneur Robert Bigelow. NASA paid the North Las Vegas company $17.8 million to test the inflatable-habitat concept at the space station.

The soft-sided, multi-layered Beam measured 7 feet long and nearly 8 feet in diameter when delivered last month to the station by SpaceX, packed in the trunk of a capsule loaded with supplies.

When fully expanded, the compartment should exceed 13 feet in length and 10 1/2 feet in diameter. That's the beauty of inflatable spacecraft; they can be packed tightly for launch, then expand and provide lots of room once aloft.

Bigelow Aerospace hopes to launch even bigger inflatable habitats in the future for use by tourists orbiting Earth, as well as professional astronauts bound for Mars.

Williams and his crewmates aren't allowed to go inside the empty BEAM until a week after it is fully inflated, so ground controllers can check for leaks. Except for when astronauts go in to take measurements every few months, the hatch will remain sealed.

BEAM is supposed to stay attached to the space station for two years.

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Online:

Bigelow Aerospace: http://bigelowaerospace.com/

NASA: http://www.nasa.gov/mission-pages/station/main/index.html

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