Tag: ISS

Two astronauts completed an eight hour spacewalk today, extended because of problems with several stuck bolts.

3:05 pm

Two astronauts on ISS completed an eight hour spacewalk today, extended because of problems with several stuck bolts.

Williams and Hoshide initially progressed well through their tasks, but the astronauts struggled with difficult bolts when removing a faulty power box from the exterior of the space station, and then again when replacing the defunct unit with a new spare.

More information here. In the end they were forced to leave the replacement unit only temporarily attached because the bolts would simply not screw in. It was thought there might be debris in the screw holes.

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More rumors about a year-long mission on ISS

9:05 am

The possibility that NASA might finally agree with Russia’s repeated request to fly a year-long mission to ISS grew stronger this morning with two stories:

The first, by James Oberg, digs into the underworld of NASA politics to find that plans might very well be more advanced than NASA is letting on:
» Read more

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NASA today announced that recent research on ISS into bone loss due to weightlessness has found that proper exercise and diet can stabilize bone loss.

11:42 am

Good news! NASA today announced that recent research on ISS into bone loss due to weightlessness has found that proper exercise and diet can stabilize bone loss.

Past Russian research on Mir had found that exercise and diet could limit the bone loss, but not stop it entirely. The key difference in this recent work seems to be the use of more sophisticated exercise equipment.

If this research holds up, it eliminates one of the most serious obstacles to interplanetary travel.

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What do you do with a giant space station when its lifespan is over?

8:36 am

What do you do with a giant space station when its lifespan is over?

The article notes that no date has been set for deorbit, and that it likely will not happen before 2028. The article also includes information about some of medical and engineering problems of long term weightlessness that have been discovered on ISS, and how engineers have attempted to address them.

Unfortunately, some of these problems, such as the recently discovered vision problems, remain unsolved. It is a shame that while Russia wants to do multi-year missions on the station to study these issues, NASA continues to resist.

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Monday’s successful spacewalk by two Russian astronauts preps ISS for the arrival of a new Russian module.

8:32 am

Monday’s successful spacewalk by two Russian astronauts has prepared ISS for the arrival of a new Russian module.

I should have posted a link about this spacewalk earlier. What is important however is that the Russians continue to move forward, though slowly. And they continue to come up with simple solutions to problems, such as the extra layer of shielding for the living quarters on ISS, installed during this spacewalk.

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Russia is considering shortening the time it takes for its Progress and Soyuz capsules to reach ISS after launch, from 50 hours to 6.

10:14 am

Russia is considering shortening the time it takes for its Progress and Soyuz capsules to reach ISS after launch, from 50 hours to 6.

The long travel time was designed to save fuel at launch — thus increasing payload — by allowing orbital mechanics to bring the capsule and station together. I wonder then why the Russians are considering this change. Have the figured out a way to save the fuel in other ways?

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Bad training of the astronauts led to the failure of the student experiments recently on ISS.

11:25 pm

Bad training of the ISS astronauts by the company supplying the experiments was the reason the student experiments were never turned on.

“Previous crews were given on the ground review and personal interaction prior to launch,” Manber said. “For this mission, the astronaut received hardware training solely via video while on the space station. Clearly, there was a miscommunication resulting from the video instruction.”

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A student experiment that was successfully flown up and down to ISS by Dragon is apparently a failure because no one on ISS ever turned it on.

8:46 am

A student experiment — successfully flown up and down to ISS by Dragon — is apparently a failure because no one on ISS ever turned it on.

Per instructions from NanoRacks, the Houston company that works with NASA to integrate such deliveries, Warren packed his worms, or C. elegans, into a glass ampule, or tube, then packed that tube into a larger one containing a liquid “growth medium” for the worms. An astronaut aboard the space station was to crack the outer ampule in a way that would release the worms into the surrounding liquid. It never happened.

The article is very diplomatic about this, but it is very clear that either the astronauts on ISS screwed up, or NASA did by not giving them clear instructions.

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The second phase of NASA’s robotic refueling demo on ISS has successfully proven that a robot can remove a satellite fuel cap not designed for refueling.

9:19 am

The second phase of NASA’s robotic refueling demo on ISS has successfully proven that a robot can remove a satellite fuel cap not designed for refueling.

The fuel cap design is a duplicate of that used by several climate research satellites presently in orbit. These satellites were not designed to be refueled, but if they could be refueled, their usefulness in orbit could be doubled, even tripled. This test is intended to demonstrate that a robot could refuel them.

The last phase of this robotic demo will take place in August, when the robots will attempt to pump a simulated fuel into the demo satellite.

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