by Staff Writers
Miami (AFP) May 27, 2016
NASA will try again Saturday to inflate an add-on room at the International Space Station, after the first attempt ran into problems due to too much friction.
The flexible habitat, known as the Bigelow Expandable Activity Module (BEAM), is part of an experiment to test expandable habitats astronauts might use on the Moon or Mars in the coming decades.
"We ran into higher forces than we believe our models predicted," Jason Crusan, director of Advanced Exploration Systems at NASA, told reporters.
"At that point in time we decided to stand down the pressurization operation," he said of the decision to stop after two hours on Thursday.
He added that "the primary force that we believe that we're working against is friction forces between the fabrics."
Bigelow, which developed the first-of-its-kind habitat as part of an $18 million contract with NASA, said it fully supported the decision to pause the expansion.
"The BEAM spacecraft has been in a packed state for a significantly longer time than expected," Bigelow said in a statement.
"It has undergone a tremendous squeeze for over 15 months, which is 10 months longer than planned. Therefore, there is a potential for the behavior of the materials that make up the outside of the spacecraft to act differently than expected."
Fully expanded, the module should reach a size of 13 feet long (four meters) by 10.5 feet (3.23 meters) wide.
The initial plan was for astronauts to venture inside multiple times over the next two years to take readings from sensors inside the pod and to test how well it might protect against space radiation.
NASA said that if the expansion runs into problems on Saturday, they may deflate the habitat and try again in the coming days.
"We are very confident that we will get it fully expanded at some point in time," said Crusan.
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