Tag: ISS

Orbital Sciences has successfully launched its Cygnus cargo ferry into orbit.

11:23 am

Orbital Sciences has successfully launched its Cygnus cargo ferry into orbit.

Another perfect launch for the company.

Consider once again what has happened. While it cost NASA six years and $9 billion to build nothing before its Constellation program was cancelled, two private companies have built and launched two different rockets and unmanned cargo spacecraft in that same time period for about a third of that cost.

The contrast couldn’t be more stark. And that contrast will get even more stark as the flights of the privately built manned spacecraft by SpaceX, Boeing, and Sierra Nevada unfold in the coming three years, while SLS and Orion sit around and do little but spend money.

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NASA and the Obama administration have announced their support for extending ISS’s operations for more years to at least 2024.

11:18 pm

NASA and the Obama administration have announced their support for extending ISS’s operations for more years to at least 2024.

Obviously, Congress needs to agree with funds. Moreover, so do the Europeans, Russians, and Japanese, though they all have been pushing to extend ISS for awhile.

Now maybe NASA will finally consider doing some of those year-long plus manned missions on ISS that are essential if humans are eventually going to go to Mars and beyond.

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The company for the high resolution cameras that the Russian astronauts were unable to install on ISS during their spacewalk last week has issued an update.

8:42 am

The company for the high resolution cameras that the Russian astronauts were unable to install on ISS during their spacewalk last week has issued an update.

The installation of the cameras proceeded according to plan and without incident. During a spacewalk, Russian cosmonauts were able to transport the cameras to their mounting position and install them quickly and efficiently. However, soon after installation, the Mission Control Centre (MCC) outside of Moscow was unable to receive any data from either camera (contrary to what was reported during the live transmission of the spacewalk). Without this data, engineers in the MCC were not able to confirm that the cameras were receiving the power necessary to allow them to survive the temperature fluctuations of the space environment. As a consequence, senior technical personnel from UrtheCast and RSC Energia (UrtheCast’s Russian partner) jointly decided that the safest and most prudent course of action was to uninstall the cameras and bring them back inside the ISS to be reinstalled at a later date, once the data transmission problem has been solved.

UrtheCast’s Chief Technology Officer, Dr. George Tyc, was present at the MCC throughout the operation, along with the Company’s Chief Engineer for Space Systems, Mr. Greg Giffin. Said Dr. Tyc, “The fact the neither camera could communicate with the MCC strongly suggests that the problem lies inside the ISS and it is not a problem with the cameras or external cables. This kind of issue has been encountered before on the ISS and can be fixed in the near-term. Bringing the cameras back inside to be installed another day was simply the right engineering decision.”

No word on what caused the problem, but as this commercial project is being done in partnership with the Russians and the Russians are whom the company is working to solve the technical problem it was almost certainly on the Russian portion of ISS.

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Today’s spacewalk by two Russian astronauts on ISS set a new Russian duration record though one of the two commercial cameras was unable to transmit its data to the ground.

3:23 pm

Today’s spacewalk by two Russian astronauts on ISS set a new Russian duration record though one of the two commercial cameras installed was unable to transmit its data to the ground.

For reasons that are unclear, the astronauts were then instructed to disconnect both cameras and bring them back inside ISS. This caused the cancellation of a number of other tasks and was the reason the spacewalk was the longest ever by Russian astronauts.

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This news report, confirmed by no other source, claims that the spacewalk this week was cut short because of water in the astronauts’ spacesuits.

8:43 am

This news report, confirmed by no other source, claims that the spacewalk this week was cut short because of water in the astronauts’ spacesuits.

I report this story but am very puzzled. If a water leak was the cause of the shortened spacewalks, I would have expected others to report that fact as well. No one has, however. (See this nasaspaceflight.com article, for example, which outlines the entire engineering situation quite thoroughly but says “both suits performed well during the EVA.”) Moreover, the ABC particular story above is written by someone who is not a space reporter, and contains some incongruities that reflect that, making me even more skeptical.

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Yesterday’s spacewalk on ISS, though successful, was cut short because of spacesuit discomfort issues unrelated to the earlier water leak problems.

9:11 am

Yesterday’s spacewalk on ISS, though successful, was cut short because of spacesuit discomfort issues unrelated to the earlier water leak problems.

No story on the spacewalk is entirely clear on the issues. Astronaut Rick Mastracchio was cold, but it seems he also had other problems that have not been outlined clearly. Interestingly he was not using the spacesuit that flooded in July. Michael Hopkins was using that suit and apparently had no problems.

In order to resize the spare suit on the station for Mastracchio they have delayed the next spacesuit for one day.

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NASA engineers have decided to go ahead with a series of spacewalks to repair the ISS cooling system, thereby delaying the Cygnus cargo mission until January.

3:12 pm

NASA engineers have decided to go ahead with a series of spacewalks to repair the ISS cooling system, thereby delaying the Cygnus cargo mission until January.

The EVAs will take place on December 21, 23 and 25 followed by a Russian Spacewalk on the 27th and a Beta-Angle Cut-out beginning on December 29. That means that the earliest launch opportunity for Cygnus is January 9, 2014 (local time) – pending the successful execution of the contingency EVAs.

Update: The Orbital Sciences press announcement says their launch can happen no earlier than January 13.

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It appears that NASA is planning to go ahead with at least one spacewalk to replace ISS’s faulty coolant system pump.

10:40 am

It appears that NASA is planning to go ahead with at least one spacewalk to replace ISS’s faulty coolant system pump.

After attempts from the inside to restart the malfunctioning cooling loop on the International Space Station failed last night, NASA mission managers have decided a spacewalk will be required to fix the problem, a source privy to NASA operations told TV20 News. NASA mission managers have scheduled the first spacewalk for Dec. 19th, according to the source, with two other spacewalks, also known as EVAs, likely to follow a few days after.

This story is not yet confirmed, but this AP article suggests it might be true.

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The coolant systems failure on ISS might delay next week’s Cygnus cargo mission.

5:50 pm

The coolant systems failure on ISS might delay next week’s Cygnus cargo mission.

[T]he reduced cooling capability means there’s less of a safety margin on the station. Todd said mission managers don’t want to risk having the Cygnus come in for a hookup under such conditions. “While we’re sitting at one loop, we’re somewhat vulnerable,” he said.

The logic here escapes me. It suggests they will stop all cargo missions to ISS until the coolant problem is solved. However, what if they can’t solve it without a spacewalk? To do that spacewalk they have to deliver an upgraded spacesuit to the station to replace the suit that had water leak problems in July, and that delivery is not scheduled until late February when the next Dragon cargo launch is scheduled.

Maybe they are considering putting that replacement suit on the Cygnus capsule so it can arrive quickly. If so, that would justify delaying the Cygnus launch for a few days.

More details about the situation here.

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If a US spacewalk on ISS is necessary to repair its cooling system, the spare parts are there, but the spacesuits are not.

8:35 am

If a US spacewalk on ISS is necessary to repair its cooling system, the spare parts are there, but the spacesuits are not.

Prior to retiring the shuttle NASA, aware that cargo supply would be limited once the shuttle was gone, shipped up to the station as many spare parts as possible. Thus, there are three spare pump modules on ISS that could be installed during a spacewalk to replace the module that has the valve problem.

However, because of the water leak problem that occurred in one American spacesuit during a July spacewalk, NASA has halted all American spacewalks until replacement suits can be shipped up to the station.

Since then, NASA has been conducting extensive investigations into the water leak issue, with… “the crew performed a series of tests on EMU 3011 [the faulty spacesuit] as part of an ongoing effort for returning the suit back to service. The tests included water leak checks, communication checks, and suit pressure leak checks. EMU 3011 passed all tests.”

However, NASA had been planning to wait to return another EMU, serial number 3015, to Earth aboard a SpaceX Dragon vehicle and deliver a new EMU in its place before clearing EVAs to resume. However the next Dragon vehicle is not scheduled to arrive at the ISS until at least late February next year.

The Russians might be able to do this spacewalk, but they are going to demand payment for the work. And they won’t come cheap, considering the circumstances.

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A Progress freighter, launched yesterday, will not dock with ISS for four days in order to test upgrades to its rendezvou radar system.

8:52 am

A Progress freighter, launched yesterday, will not dock with ISS for four days in order to test upgrades to its rendezvou radar system.

Unlike recent Progress vehicles that used the 2AO-VKA and AKR-VKA antennas of Kurs-A system, M-21M is sporting a AO-753A antenna of the Kurs-NA system instead. Once the Progress reaches its preliminary orbit, it will conduct a series of automated engine burns to put it on track to fly within one mile of the station on Wednesday, allowing for the test of the lighter, more-efficient Kurs automated rendezvous system hardware for upgraded Soyuz and Progress vehicles.

After it finishes its flyby, the Progress will loop above and behind the station, returning Friday for a docking.

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On Tuesday NASA issued a solicitation for bids on providing the agency a manned ferrying capability to and from ISS.

8:38 am

On Tuesday NASA issued a solicitation for bids on providing the agency a manned ferrying capability to and from ISS.

The new solicitation asks for proposals for final design, development, test, evaluation and certification of a human space transportation system, including ground operations, launch, orbital operations, return to Earth and landing.

The article is unclear how this solicitation fits in with the commercial crew program that already exists and is funding the manned upgrade of SpaceX’s Dragon and the development of Boeing’s CST-100 and Sierra Nevada’s Dream Chaser.

Update: This article makes things much clearer, outlining how this solicitation is the next phase in development and is open to all bidders.

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China reveals its space station plans.

8:26 pm

China reveals its space station plans.

“China Space Station (CSS) will operate in orbit from 2022 to 2032. This period will provide much more opportunities to scientists in China and all of the world after the international space station,” Gu Yidong, president of the China Society of Space Research, said at the American Society for Gravitational and Space Research conference here Nov. 3 – 8. The station’s core module is slated to launch in 2018, followed by two laboratory modules in 2020 and 2022. The outpost will be located in an orbit ranging from 350 kilometers to 450 kilometers above Earth and inclined 42 degrees relative to the planet’s equator.

The article describes in detail their research plans on their station, which sound much the same as the kind of research done on ISS. I suspect this is a bit of misdirection. Their station is clearly designed as a prototype interplanetary station, much like Mir. I believe that any research they do on it will be focused around that fact, which will make that research significantly different that the work done on ISS, which is often not very effective and poorly focused.

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A detailed update on the status of spacesuit repairs on ISS, following the July water leak during a spacewalk.

2:12 pm

A detailed update on the status of spacesuit repairs on ISS, following the July water leak during a spacewalk.

After additional tools and parts were sent up on both Progress and Cygnus freighters, astronauts on ISS pinpointed the problem and replaced the failed the “fan/pump/separator”. The faulty unit was brought back to Earth for further analysis in the manned Soyuz craft yesterday.

Of the four U.S. spacesuits on ISS, one is still considered faulty and needs to be replaced, which will happen with the next Dragon flight expected sometime in February 2014.

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During a five hour EVA that had lots of difficulties, two Russian cosmonauts took the Olympic torch on a spacewalk

9:21 am

During a five hour EVA yesterday that had lots of minor technical difficulties, two Russian cosmonauts took the Olympic torch on a spacewalk.

Most of the press is focusing on the PR stunt with the Olympic torch, but I think these issues are more interesting:

Working around the Service Module, Kotov and Ryazanski worked on cables at the RK21 site before attempting to fold up the panels on the hardware into its original configuration. The EVA tasks were mainly related to the preparations on the Urthecast pointing platform for installation of the HD camera in December. However, only the removal of the launch restraint from VRM EVA workstation and the disconnection of the RK-21 experiment were completed. The duo struggled with the relocation of the Yakor foot restraint – which they opted to take back to the airlock instead – while also failing to fold and lock RK-21 experiment antenna panels. While the spacewalkers managed to take a large quantity of photos for engineers on the ground to examine, the spacewalk was concluded after the failure to fold up the RK-21 panels, resulting in outstanding tasks for the next EVA.

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