Tag: ISS

Europe successfully launched its third unmanned freighter to ISS early this morning.

2:14 am

Europe successfully launched its third unmanned freighter to ISS early this morning.

The 13-ton cargo freighter is loaded with about 7.2 tons of supplies, including food, water, clothing, experiments and fuel for the space station, according to NASA. The unmanned ATV-3 is the heaviest load of cargo ever delivered to the station by a robotic spacecraft, ESA officials said in a statement.

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Private space station builder Bigelow is hiring again.

5:47 pm

This bodes well: Private space station builder Bigelow is hiring again.

One interesting tidbit from this article is the description of the company’s negotiations with NASA to attach a Bigelow module to ISS.

The company has been negotiating with NASA for about two years on the potential deal, and that Bigelow has completed various planning and development milestones for NASA. “We’ve been in a series of discussions with NASA over the past two years, with regard to the BEAM project,” Gold told Space News. “They were initiated as part of a proposal in 2010, and we’re hopeful an announcement will be made in the not-too-distant future.”

NASA gave no sign that a deal with Bigelow was imminent. “We do have a no-cost contract with Bigelow to cover early requirements development [for BEAM] but it is not for the flight article,” NASA spokesman Josh Buck said in a March 20 email. “The Agency has not made a decision to go to a flight system yet.” [emphasis mine]

Two years to discuss “planning and development,” and still no decision. My guess is that NASA management doesn’t want to buy a Bigelow module, as it would be relatively cheap and therefore wouldn’t spread much money to NASA centers. They just can’t say no for political reasons.

And if they do want to do it, the slow pace of their decision-making process demonstrates clearly why they shouldn’t be entrusted to build anything in the future.

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Research on ISS has found that prolonged spaceflight causes vision problems and might even damage the human eye.

8:38 am

Research on ISS has found that prolonged spaceflight causes vision problems and might even damage the human eye.

There had been hints of this discovery in an earlier report, but today’s paper is the first published science on the subject.

The results are not only important for finding out the medical challenges of weightlessness. They illustrate once again the need to do long extended flights on ISS. Without that research we are never going to be able to fly humans to other planets.

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Playing hardball

9:23 am

The director of Russia’s manned program told the press today that the Russians do not have that a signed contract with NASA to fly astronauts to ISS after 2015, despite NASA’s announcement that such an agreement exists.

If true, NASA’s management has committed a very serious error which will cost the U.S. a great deal of money in the coming years, especially if there are significant delays in getting the new commercial companies online to provide the U.S. an American capability for ferrying humans to orbit.
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Robotic refueling demo begins today on ISS

1:06 pm

A robotic refueling demo. designed and built by the same people who ran the Hubble Space Telescope repair missions, begins today on ISS, using Dextre.

This demo is designed to prove that a robot, operated from the ground, can refuel a satellite not designed for refueling. The demo satellite on ISS was built to match the design of several climate satellites already in orbit that will end up defunct in a few years if they can’t be refueled.

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The March 9 launch of Europe’s cargo freighter to ISS has been delayed two weeks so that engineers can climb inside and tighted two straps holding two cargo containers in place.

7:48 pm

The March 9 launch of Europe’s next cargo freighter to ISS has been delayed two weeks so that engineers can climb inside and tighten two straps holding two cargo containers in place.

I suspect the reasons behind this problem are quite embarrassing, which is probably why the press releases are so vague about why the straps were loose and how the Europeans discovered the problem.

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What is the International Space Station’s weakest link?

8:45 pm

What is the International Space Station’s weakest link?

Mark Mulqueen, ISS vehicle director for Boeing Co., said keeping the station’s environmental control and life support systems, or ECLSS, functioning over the next decade will likely be engineers’ toughest challenge. “I don’t think it’s sparing or the structure to get to 2020,” Mulqueen said. “It’s probably continued refinement of how we successfuly operate our ECLSS system on-orbit. There has been a lot of effort going into understanding that.”

The article outlines a number of other areas of concern, none of which appear to be serious, for now, but could be a problem as the years pass.

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ISS to finally get an experimental centrifuge

6:22 pm

At last! The ISS is to finally going to get an experimental centrifuge.

I have studied at length all the research done on all the space station ever launched, from Skylab, all the Russian Salyut stations, Mir, and now ISS, and from I could tell, only once was a centrifuge experiment put in space, by the Russians. Though the centrifuge was small and the results inconclusive, they suggested that even the addition of a truly miniscule amount of force could significantly mitigate the effects of weightlessness on plants and materials.

To finally get an experimental centrifuge on ISS is wonderful news. In order to build an interplanetary spaceship as cheaply and as efficiently as possible using centrifugal force to create artificial gravity we need to know the minimum amount of centrifugal force we need. Less energy will probably require less complex engineering, which should also require less launch weight to orbit, lowering the cost in all ways.

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Why things break in space

3:22 pm

Updated and bumped: I will be discussing this story on the the John Batchelor Show tonight, February 17, Friday, 12:50 am (Eastern), and then re-aired on Sunday, February 19, 12:50 am (Eastern).
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Someday, humans will be traveling far from Earth in large interplanetary spaceships not very different than the International Space Station (ISS). Isolated and dependent on these ships for survival, these travelers will have no choice but to know how to maintain and repair their vessels whenever something on them should break.

And things will break. Entropy rules, and with time all things deteriorate and fail.

Each failure, however, is also a precious opportunity to learn something about the environment of space. Why did an item break? What caused it to fail? Can we do something to prevent the failure in the future? Finding answers to these questions will make it possible to build better and more reliable interplanetary spaceships.

ISS is presently our only testbed for studying these kinds of engineering questions. And in 2007, a spectacular failure, combined with an epic spacewalk, gave engineers at the Johnson Space Center a marvelous opportunity to study these very issues.
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The Russians now say the next manned flight to ISS will be delayed a month, until the end of April, due to defects found in the Soyuz capsule.

7:01 pm

The Russians now say the next manned flight to ISS will be delayed a month, until the end of April, due to defects found in the Soyuz capsule.

The story suggests some confusion over what caused the cracks, either defects to the capsule itself or a mistake in the testing process.

A commission set up to probe the setback said violations of the testing procedure caused the damage to the reentry vehicle incident, earlier reports said. Either excessive pressure was applied by the personnel, or the shell of the reentry vehicle had defects or was improperly welded up.

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Because of technical problems with the Soyuz spacecraft it appears the Russians are going to postpone the next two manned launches to ISS.

9:29 am

Because of technical problems with the Soyuz spacecraft it appears the Russians are going to postpone the next two manned launches to ISS.

So, in one breath Americans whine about how we are dependent on the Russians to get into space, while in the next breath they lambast the only Presidential candidate (Gingrich) willing to aggressively do something about it without spending billions of dollars. You would think they’d at least be interested in what he had to say.

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