Tag: Russia

Leak search on ISS narrows further

9:25 am

Further work on ISS by the astronauts has now narrowed the location of the station’s long-term slow leak to the aft area of the Russian Zvezda module.

As of Monday, the station crew had not located the precise site of the leak, but officials believe they have traced it to a transfer compartment at the rear section of the Zvezda module, near an aft docking port where a Russian Progress resupply freighter is attached.

The rate of leak continues to be slow and thus not any danger to the crew. It is also a concern, as it could become a safety issue should it increase. They want to find it and patch it. Furthermore, Zvezda is ISS’s second oldest module, launched in 2000. If this leak is a sign of that age is even more essential to know.

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Leak on ISS located?

3:57 pm

According to Business Insider article , engineers have finally narrowed the location of the slow leak on ISS to the Russian Zvezda module.

NASA and Roscosmos, Russia’s space agency, had already narrowed down the likely location of the leak to several modules on the station’s Russian side.

So astronaut Chris Cassidy and cosmonauts Anatoly Ivanishin and Ivan Vagner tested those modules by shutting the hatches between each one and using an ultrasonic leak detector to collect data through the night. The tool measures noise caused by airflow too quiet for humans to hear.

By Tuesday morning, they’d figured out that the leak is in the Zvezda Service Module, the main module on the station’s Russian side. Zvezda provides that half of the station with oxygen and drinkable water, and it’s also equipped with a machine that scrubs carbon dioxide from the air. The module contains the section’s sleeping quarters, dining room, refrigerator, freezer, and bathroom.

They don’t yet know where in the module the leak is located, but at least they know at last where to look.

This module was the second module launched to ISS, launching in 2000. Thus, the leak could not have come from any construction workers from the ground. More likely its age has resulted in something changing. This needs to be fixed, but at the moment the situation is not critical.

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ISS air leak still unlocated

9:04 am

The small air leak that was found on ISS a year ago has still not been located, despite a second weekend where the crew isolated themselves in one module and closed the hatches on all other modules so that ground engineers could track any air supply changes.

At a Sept. 28 briefing about the upcoming Northrop Grumman NG-14 Cygnus cargo mission to the station, a NASA official said that the weekend isolation in the Zvezda module failed to immediately locate the source of the leak. “As of this morning, there was no clear indication of where the leak is,” said Greg Dorth, manager of the ISS Program External Integration Office at NASA. “The teams are still looking at the data and evaluating it.”

This was the second time the ISS crew confined themselves to Zvezda in an effort to track down the leak. A month earlier, the three also spent a weekend in Zvezda with the other modules sealed off in an effort to locate the leak. “After the three days, there was no indication of where the leak was coming from,” Dorth said.

This latest test, he said, featured some “slightly different configurations” in both the U.S. and Russian segments, although he did not elaborate on the differences between the two tests. In addition, Cassidy used an ultrasonic leak detector to see if the leak was coming from Zvezda itself.

These tests were possible since mid-August because there were only three people on station, allowing them to be confined to one module for a period of time. Moreover, during this time no other spacecraft have arrived or left. It is suspected that the leak is most likely coming from the connection point between two modules, and adding or removing a Soyuz, Dragon, or freighter to the station shifts its center of gravity, changing the stress points at those connections.

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China and Russia launch a bunch of satellites

8:40 am

Russia today used its Soyuz-2 rocket to launch three communication satellites plus 19 commercial smallsats.

This was the first time Russia used the Soyuz-2 for these particular small communications satellites, as previously they had been launched by a variety of smaller rockets.

China in turn today used its Long March 4B to place two Earth resource satellites into orbit.

The leaders in the 2020 launch race:

25 China
15 SpaceX
10 Russia
4 ULA
4 Europe (Arianespace)

China has moved ahead of the U.S. 25 to 24 in the national rankings.

These numbers should change again in the next few days. The U.S. has had a number of scrubs and launch delays in the past few days. ULA has been repeatedly pushing back the previously delayed launch of a National Security Agency reconnaissance satellite due to a variety of problems related to its Delta 4 Heavy rocket. The launch is now set for just after midnight tonight (Monday night). [UPDATE: Launch scrubbed due to lightning and poor weather. Tentatively rescheduled for 11:58 pm (Eastern) on September 29.]

SpaceX meanwhile had to scrub a launch this morning (September 28) of another 60 Starlink satellites due to weather. No new launch date has yet been announced.

Northrop Grumman also has had to scrub tomorrow’s Antares launch of a Cygnus cargo freighter because of poor weather at Wallops Island. It is now set for the evening of October 1st.

SpaceX also has a scheduled launch tomorrow morning of a GPS satellite on its Falcon 9 rocket. This is also threatened by weather. There is also no word whether the ULA launch scrub will cause this launch to be delayed.

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Leak hunt continues on ISS

10:04 am

Two stories today indicate that the search for the elusive source of the slow leak on ISS is continuing.

The problem is that the two stories appear to have no overlap, making it hard to figure out what is planned and why.

The first story describes how engineers, based on the first isolation test, now think the leak must be coming from one of two modules:

…the ones the crew didn’t test because they were inside them while monitoring the rest of the station. One is the Zvezda Service Module, which provides life support for the station’s Russian side. The other is the Poisk Mini-Research Module 2, which serves as a port for docking spaceships and a place where crew members prepare for spacewalks.

The second story, from the Russian press, does not mention this detail. All it says is that the astronauts are going to once again isolate themselves in “the Russian segment” so the rest of the station can be tested for leaks. Since the two modules in question are both in that Russian segment, it is unclear where the astronauts will be isolated, especially since Zvezda is also where the Soyuz descent capsule is docked and if sealed from astronaut access it also seals them from their lifeboat.

It could be that the plan is to do another test of the American side of the station, then do these two Russian modules after the arrival of the next manned Dragon mission in a little less than a month. Dragon can then replace Soyuz as a lifeboat, allowing a test of Zvezda.

Regardless, the leak is a slow one, and is not yet life-threatening. That the leak rate has recently increased however requires action to find and fix it.

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OneWeb announces new launch schedule, cancels Ariane 6 launch

9:47 am

Capitalism in space: OneWeb, as it restructures itself after its purchase by a partnership of an Indian company and the UK government, has announced a new launch schedule for completing its satellite communications constellation by 2022, with the first launch in December.

The key change is that they have cancelled their deal to fly OneWeb satellites on the first launch of Arianespace’s Ariane 6 rocket. From the first link:

Arianespace will conduct 16 Soyuz launches for OneWeb, each carrying 34-36 satellites, to complete OneWeb’s internet megaconstellation by the end of 2022. The revised contract canceled two Soyuz launches, and removed OneWeb as the customer for the inaugural Ariane 6 launch, an Arianespace spokesperson told SpaceNews.

The Ariane 6 cancellation is bad news for Arianespace’s new rocket, which has had trouble garnering customers. I am sure OneWeb was offered a great price to launch some satellites on that inaugural flight, and still OneWeb backed out.

For Russia this announcement is good news, even if they have lost two Soyuz launches. It means the bulk of their Soyuz launches will go forward, pumping money into the Russia’s starving commercial launch industry. This launch contract is essentially the only Russian commercial contract, with SpaceX stealing all of Russia’s former customers, and the bankruptcy had threatened it.

Finally, this announcement shows that OneWeb’s new owners have recognized that they have to get their satellites launched as fast as possible if they are going to compete with SpaceX’s Starlink constellation.

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Russia wins spacesuit contract for India’s Gaganyaan manned mission

9:29 am

The new colonial movement: The Russian Zvezda design center in Roscosmos has won the spacesuit contract to build the spacesuits and capsule seats for India’s Gaganyaan manned mission, targeted for a ’22 launch.

It is not surprising that the Russians won this contract. India does not have a lot of time to get the mission off the ground, and needs help. The Russian spacesuits are practical and proven, and are far superior to anything available from NASA. The only other option available at this moment would be the flight suits SpaceX designed for its Dragon missions and flown once. I suspect the Indians want something that has been used and tested more.

Moreover, their astronauts are being trained by the Russians. Better and simpler to have them use the suits the Russians use.

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Russia to spend $470 million to restore Sea Launch

9:51 am

The Russian government today revealed that it has agreed to spend $470 million to restore the Sea Launch floating launchpad.

Before Russia took possession the platform had been stripped of much of its equipment, probably as part of the final financial settlement with Boeing, which had once been a part owner (with Russia and the Ukraine). As part of the break-up of the company Russia had had to buy Boeing off (after many lawsuits) to gain full ownership.

As noted by Deputy Prime Minister Yuri Borisov, “It is a unique structure unparalleled in the world. Some have plans for building something similar. It would be very silly of us, if we decided against restoring the Sea Launch and using its services. Technically all this is possible.”

For Russia the platform gives them the potential of a launch site at the equator, something they have never had.

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Russia to continue bilateral space negotiations with U.S.

9:28 am

According to one Russian foreign policy official, the Putin government will continue bilateral space negotiations with United States in connection with both its Artemis Accords (designed to encourage private ownership in space) and the military doctrines in space recently set forth by the U.S. Space Force.

The official also made note of a Russian-Chinese agreement related to the use of space, which seems to counter what the Trump administration is pushing with the Artemis Accords. However, the fact that these bilateral agreements and negotiations now exist actually gets the U.S. what it wants, foreign treaties that set out goals and rules that bypass the restrictions of the Outer Space Treaty. Those restrictions make private ownership in space legally questionable. That Russia is willing to continue negotiations with the U.S. means that it might agree eventually to some framework that allows private property in space, in order to remain a partner in the Trump administrations Artemis lunar project.

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Nauka finally arrives at launch site, thirteen years late

3:33 pm

Russia’s Nauka module for ISS has finally arrived at its launch site at Baikonur, Kazakhstan, to be prepared for its launch, now scheduled for April 2021.

After its arrival and fitting-out, Nauka will become the primary laboratory module on the Russian segment. Currently, Russia has two small laboratory modules – Rassvet and Poisk – both of which will be dwarfed by Nauka. Additionally, Nauka will take the title of the heaviest Russian module on the Station, at 24.2 tons. Zvezda currently holds this honor, at 20.3 tons.

The module is thirteen years later than first planned and has been under construction for more than a quarter century.

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Ivashka and Baba-Yaga

6:01 pm

A evening pause: An entertaining animated cartoon from Soviet Russia, 1938. It subconsciously reveals much about Russia’s rough society of that time between the world wars. Even in the 1930s Russia was still largely an illiterate peasant culture, less than three generations since the freeing of the serfs and now ruled by Stalin and the communists with an iron hand.

Hat tip Jim Mallamace.

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Russia to ship Nauka to Baikonur launch site August 10

9:48 am

Russia now plans to ship its Nauka ISS module to Baikonur on August 10th, three days later than previously planned, where it will begin the final nine months of preparations for launch.

“The stage of electrical tests takes about six months together with preparations because there is a large number of systems. Scheduled operational measures take another three months from this moment to the launch. This involves direct preparations for the launch together with the provision of microbiological protection, fueling and other operations,” he explained.

Nauka will provide the Russians a second toilet on ISS, plus produce oxygen and water (from urine) for six astronauts. It will also become the cabin for a third Russian-flown astronaut, either tourist or professional.

Nauka is a quarter century in the making, its construction having started in 1995. As a government-run project, that pace matches well with SLS, Orion, the James Webb Space Telescope, and many other big government projects not related to space. The goal isn’t to accomplish anything really but to create the justification for fake jobs that can last a lifetime.

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