Tag: Russia

Russian company proposes new Russian space station post-ISS

9:27 am

Energia, the division in Roscosmos that manages the Russian manned program, including its share of ISS, has proposed that Russia build its own space station after 2025, and the reasons it gives strongly suggest they are worried about the condition of their 20-year-old and leaking Zvezda module.

The International Space Station’s systems are likely to keep breaking down after 2025, Energia company, which manages the Russian module, said and suggested building a national station instead. “Russia has commitments regarding the ISS through 2025. Several elements are already seriously damaged and about to stop functioning. Many of them are impossible to replace. After 2025, we expect many ISS elements to start breaking down en masse,” the deputy director-general of Energia, Vladimir Soloviev, said at a meeting of the Russian Academy of Sciences. [emphasis mine]

They don’t mention Zvezda by name, but the highlighted words point to it. Assuming the persistent leaks in the module are related to stress damage and age, this statement is recognizing publicly that replacing Zvezda is very difficult, or impossible, and that it is on the verge of complete failure.

Whether Russia has the money or resources to get another station built soon after 2025 is questionable, however. If they do decide to go it alone, I doubt they could launch a replacement before 2030, at the earliest, and likely much later than that.

If they do end the partnership with the U.S., it is unclear what happens to ISS. If the Russians choose to undock their portion of the station it will leave ISS somewhat crippled. It has been my impression that without all of the environmental systems in the Russian half, ISS cannot function. This might no longer be true, and will likely not be true with the planned arrival of Axiom’s private modules by the mid-20s. Timing however of all this remains critical.

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Faulty valve on one Soyuz causes Russians to delay second Soyuz launch

8:44 am

Due to the discovery of a faulty valve on a Soyuz rocket being prepared for launch in French Guiana, Roscosmos has delayed today’s Soyuz rocket launch from Plesetsk, Russia, until December 3rd to allow engineers to inspect similar valves on that rocket.

This quote from Dmitry Rogozin, head of Roscosmos, from the first link, describing the problem, is somewhat amusing:

“The ‘faulty valve’ would be launched with the rocket, and it would return to Earth being just a heap of mishap metal, that would be the problem. There are always some flaws, but in our case, they cost too much. Happily, the low-quality detail was timely detected by the quality control system. However, in general, I do note a sharp decline in our suppliers’ responsibility and quality of their work,”

It appears the quality control problems with Russia’s aerospace industry are continuing. No one, including the Russians, should be surprised by this, as that industry has no competition to stimulate quality work and force bad companies out of business. Instead, everything is managed by Roscosmos from on top, with much of that management designed to eliminate competition entirely and protect the companies that presently exist..

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Despite permanent repair of crack, air still leaking from Zvezda

10:11 am

According to a Russian news report yesterday, air is still leaking from the Zvezda module of ISS, despite the permanent repair of the crack earlier this week.

Earlier, the crew locked the hatches into the intermediate chamber. The Mission Control asked whether the crew had measured the pressure before the hatch into that chamber was opened. The crew reported that the pressure went down considerably in the smaller part of the compartment while it remained isolated from the rest of the station by an airtight hatch. “The pressure in the intermediate chamber went down from 723 mm of the mercury column to 685 millimeters,” Ryzhikov said.

The report is poorly written, and is unclear on the exact date this air test was done. It is therefore possible the test was done prior to the permanent repair.

If however the air is still leaking, this suggests there might be more than one leak point in that part of Zvezda. According to this same story, the two Russian astronauts during their spacewalk on November 18th took pictures of the exterior area of Zvezda where the leak is located, and noted no exterior damage.

All these facts point to a very serious problem. If there was no exterior damage, it means the leak was probably not caused by a micrometeorite hit (though closer more extensive observations as well as a review of the photos might still conclude otherwise). The fact that the leak is continuing after the permanent repair suggests there is another leak, in the same part of Zvezda. That section is also a docking port, and would have experienced the most stress during the several dozen dockings that have occurred since Zvezda was launched in 2000.

These facts therefore suggest stress damage and aging as the cause, which means the problem will only get worse no matter what method is used to seal any future leaks.

One quick solution that would work, at least for awhile, would be to close the hatch on this intermediate chamber, and do no more dockings to it. This at least would seal the station from atmosphere loss, and reduce the stress on this section of Zvezda. Whether Progress freighters, which use this port, can use another port, or will have a more limited ability to dock, is not clear, however.

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Russian astronauts complete spacewalk to prepare ISS for Nauka

10:37 am

Two Russian astronauts yesterday successfully completed an almost seven-hour spacewalk removing and repositioning equipment to prepare ISS for the arrival of Nauka next year, Russia’s next module for ISS.

The Pirs module will be removed and junked next year to make room for the research lab Nauka — Russian for “science.” Several Russian-directed spacewalks will be required to deal with all this. The plan calls for attaching a cargo ship to Pirs in order to guide it to a fiery reentry.

The new 22-ton lab — stretching 43 feet (13 meters) long — is so big that it will be launched from Kazakhstan by a powerful Proton rocket. Once at the orbiting outpost, it will double as an air lock and docking port.

Earlier it had been announced that they would also do an inspection of the area on Zvezda where they had also discovered a small crack, the cause of the longstanding leak on the station. It appears they did not do this. probably because astronauts inside the station had placed a new permanent patch on the leak, and the work they were doing during the spacewalk carried a higher priority.

Expect that inspection to eventually occur, but for now the cause of that crack remains unknown.

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Ukraine signs Artemis Accords

8:25 am

Ukraine has becomed the ninth nation to sign the Artemis Accords, designed to encourage private enterprise in space.

The article at the link provides little information, other than claiming that ” Ukraine has all the scientific and technical capabilities and experience that allow it to become one of NASA’s important partners in the implementation of the Artemis program.”

Russia and the Ukraine are on opposite sides of a war, with Russia attempting to steal territory, with some success. Russia has also boycotted all Ukrainian space technology, ending a half century of business dealings.

It seems that the Ukrainian government looked at this political landscape, and decided to align itself with the United States. By signing the accords, it now has the opportunity to sell its space technology to NASA, as well as participate in any American effort to get to the Moon and elsewhere. That it chose to pick an ally halfway around the world instead of its big and powerful neighbor, tells us a great deal about the Ukrainian’s opinion of Russia.

I expect there will be a NASA press release in the next day or so that will provide us additional information.

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Russian spacewalk to inspect leak in Zvezda

8:13 am

The Russian spacewalk to inspect the outside location of the air leak in the Zvezda module on ISS has now been scheduled for November 18, 2020, and NASA will be providing a live stream.

Live coverage of the Russian spacewalk will begin at 8:30 a.m. EST on NASA Television and the agency’s website. The spacewalk is expected to begin about 9:30 a.m.

Ryzhikov, designated extravehicular crew member 1 (EV1), will wear a Russian Orlan spacesuit with red stripes, and Kud-Sverchkov will wear a spacesuit with blue stripes as extravehicular crew member 2 (EV2). This will be the 47th Russian spacewalk for assembly and maintenance of the station.

During the spacewalk, Ryzhikov and Kud-Sverchkov will first conduct leak inspections outside the hatch, as this will be the first spacewalk using the Poisk module for its purpose as an airlock. Next, they will relocate an antenna from another module, the Pirs docking compartment, to Poisk, the first in a series of tasks over the course of several spacewalks that will prepare Pirs for decommissioning, undocking, and disposal. The Earth-facing Pirs will be replaced by the new Russian Multipurpose Laboratory Module, named “Nauka,” Russian for “science,” which is being prepared for launch at the Baikonur Cosmodrome in Kazakhstan.

What they find could have a significant impact on the future of the space station.

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Russians aim for Dec for fixing ISS leak permanently

8:23 am

The Russians announced yesterday that they plan the full and permanent repair of the small inch-long crack leaking air on ISS to occur in December, after required material is shipped to the station.

According to the official, the crack was the width of a hair and located in a hard-to-reach spot of Zvezda’s shell.

Solovyov did not specify the spacecraft that will deliver the sealing materials to the ISS, but the only one scheduled to fly in December is Cargo Dragon, a reusable freight spaceship of US private company SpaceX. The soonest flight of a Russian cargo spacecraft — Progress MS-16 — has been postponed until December 2021.

They also plan a spacewalk in the next two weeks to inspect the exterior of the Zvezda module where the crack is located.

I have yet to see an image of the crack itself. Why none has been made easily available is somewhat puzzling.

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Russian astronaut: Crack on ISS could be from “external impact”

10:48 am

Russian astronaut, Sergei Ryzhikov, today noted that to him the 1-inch crack causing the leak on ISS appeared to have been caused by an “external impact.”

Speaking with Flight Director of the Russian segment of the ISS Vladimir Solovyov, Russian cosmonaut Sergei Ryzhikov said: “If you take a closer look at the picture, there are changes of color in the middle of the crack.”

“We suspect an external impact,” Ryzhikov said adding that the place of the suspected impact should be examined during the crew’s next spacewalk, which is scheduled for November 18.

This conclusion is different than that expressed yesterday by another Russian astronaut, who suggested the crack was from age and wear and tear of the twenty-year-old Zvezda module.

Either way, an inspection of the exterior point of the crack is essential in order to permanently seal it, and that inspection will tell us one way or the other the cause of the crack.

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Russian astronaut: ISS crack could be result of Zvezda module’s age

7:31 am

A Russian astronaut just returned from ISS admitted during a press conference that the recently located crack on the 20-year-old Zvezda module that was the source of the long-term slow leak could be the result of the module’s age.

“Twenty years are actually an absolute record for all space stations now. And we see now that something is changing and something requires greater [attention]. Again, if we go back to the leak, the hull is already beginning to give cracks and scratches somewhere, that is, we see the limits [of the ISS structure’s service life],” [cosmonaut Ivan Vagner] said.

The crack has been sealed temporarily, with a more permanent seal put in place after the nearby docking port is cleared and the hatches closed and out of the way.

If Russian astronauts are noticing wear and tear in Zvezda that is bad enough to cause “cracks”, this raises some very serious issues for ISS’s future, as replacing that module on ISS will be complicated and expensive, and at this point no one has even begun planning such an replacement.

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Vostochny official arrested on fraud charges

8:39 am

Russia this past weekend arrested another Vostochny official on charges of fraud and bribery.

The arrest was of a different individual than the one Roscosmos head Dmitry Rogozin fired this weekend.

Roman Bobkov, the head of the state entity operating the cosmodrome, has been placed in pre-trial detention for two months by a local court, on Saturday, and faces several charges, including fraud, abuse of office, and incitement to abuse of office and forgery. He assumed the role of director at Vostochny in March 2019.

Bobkov is accused of using bribery to entice a senior Defense Ministry inspector, Dmitry Fomintsev, to file fake reports on the commissioning of several of the spaceport’s major water-supply facilities. The fraudulent documents were allegedly drawn up to conceal Bobkov’s own misconduct during their construction, which had left them unfinished.

They estimate the cost of Bobkov’s actions to be around $6.5 million, which in rubles is about a half billion.

The level of corruption and theft that has permeated the construction of Vostochny raises great doubts about the quality of work there, building the spaceport. Expect many “glitches” when they start attempting regular launches.

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Russia launches new GPS-type satellite

2:27 pm

Russia today successfully launched another one of its GPS-type Glonass satillites, using its Soyuz-2 rocket lifting off from its Plesetsk spaceport.

This was the first launch of this type of satellite in more than five years due to an inability to get parts because of U.S. sanctions following Russia’s invasion of Ukraine.

In response, the Russian government instituted an export-replacement program aimed at providing indigenously produced electronics for the nation’s industries. The effort was complicated by the need in some cases to build entire factories virtually from scratch.

Around 2016, ISS Reshetnev, the prime developer of GLONASS satellites, began re-designing the GLONASS-K variant for the Russian-built components. It is unclear to what extent the original GLONASS-K series relied on foreign components, but the new batch of spacecraft did not come out of assembly until the end of the 2010s.

The leaders in the 2020 launch race:

26 China
18 SpaceX
12 Russia
4 ULA
4 Europe

The U.S. continues to lead China 28 to 26 in the national rankings.

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Rogozin shakes up Vostochny management, again

9:38 am

The head of Russia’s space agency Roscosmos, Dmitry Rogozin, has reprimanded two and fired one high level managers running the construction of the new Vostochny spaceport in Russia’s far east.

Roscosmos CEO Dmitry Rogozin trekked out to the Amur Region in Russia’s Far East on Friday to check on how construction is proceeding at the Vostochny Cosmodrome. The answer was apparently, not real well. “Following the results of hearing reports at a production meeting at the Vostochny cosmodrome, Roscosmos CEO Dmitry Rogozin reprimanded Andrei Okhlopkov, Director General of the Center for Operation of Ground-Based Space Infrastructure Facilities, and Vladimir Zhuk, TsENKI Chief Engineer,” Roscosmos said in a press release.

“Prior to that, by decision of Dmitry Rogozin, Evgeny Rogoza, General Director of the Vostochny Cosmodrome Directorate, was fired,” the document said.

The article then outlines the slow pace of development at Vostochny over the last few years.

This is not the first time Russia has shaken up the Vostochny management. Early shake-ups had included arrests and prosecutions due to corruption. None have apparently succeeded in speeding up development of this giant government-run project that in many ways reminds me of NASA’s SLS/Orion project. The delays are really a feature, not a bug, as the Russian government mostly wants to be able to claim it has created jobs, and really doesn’t care too much if they actually accomplish anything.

Eventually Vostochny will become operational. I have great doubts it will ever act to make Russia once again competitive in the international launch market.

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ISS crew returns safely to Earth in Soyuz

9:22 am

After a six month mission on ISS, three astronauts have safely landed on Earth in their Soyuz capsule.

Cassidy, Ivanishin and Vagner spent 196 days in orbit, having arrived at the station on April 9. They left behind NASA’s Kate Rubins and Roscosmos’ Sergey Ryzhikov and Sergey Kud-Sverchkov, who arrived at the orbiting outpost a week ago for a six-month stay.

Cassidy, returning from his third space mission, has now spent a total of 378 days in space, the fifth highest among U.S. astronauts.

While serving as the station’s commander, Cassidy welcomed SpaceX Demo-2 crew Robert Behnken and Douglas Hurley, the first NASA astronauts to launch to the space station on an American spacecraft from American soil since the retirement of the space shuttle fleet in 2011.

Cassidy and Behnken completed four spacewalks for a total of 23 hours and 37 minutes, becoming two of only four U.S. astronauts to complete 10 spacewalks.

The three astronauts still on board ISS now await the arrival of four astronauts on SpaceX’s Resilience capsule, scheduled for launch in early to mid-November. This will rise the crew on ISS to seven, which I think is the highest since the retirement of the shuttle in 2011.

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Leak on ISS still leaking even after being temporarily sealed with tape

9:27 am

Even though Russian astronauts have now patched with Kapton tape the 1-inch crack where they thought the leak in the Zvezda module on ISS was located, the loss of air has continued, and even increased.

The pressure in the Zvezda module of the International Space Station (ISS) keeps lowering, although the fissure was patched with Kapton tape, and even faster than before the fix, the crew told the ground control on Tuesday, as broadcast by NASA.

They are going to add more tape to the patch and see if this seals the leak.

Meanwhile, there has been little discussion about the nature of this 1-inch crack. Was it caused by a micrometeorite, or is it a stress fracture? And where exactly is it, and does that location help explain it?

Inquiring minds need to know!

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Russian astronauts repair oxygen regeneration unit

10:26 am

Russian astronauts on ISS have successfully repaired the oxygen regeneration unit on the Zvezda module.

From the TASS article was this additional information:

The Elektron-VM oxygen supply system developed by Russia’s Research and Design Institute of Chemical Machine-Building (NIIChimMash) has been operational aboard the space station since its creation. The system can generate from 25 to 160 liters of oxygen per hour and additionally from 50 to 320 liters of hydrogen per hour. In April 2010, it took the ISS crew several days to fix the broken system.

No word yet on any new information on the “fracture” that is causing the slow leak.

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Leak on ISS traced to “fracture”

9:43 am

Not good news: According the Russian news source TASS, Russian astronauts have pinpointed the location of the slow leak on ISS to ” a fracture in the intersection compartment of the Russian Zvezda module.”

The astronaut also called it a “scratch,” which means the fracture is not yet confirmed. They will do more testing to find out if this is the leak source in the coming days.

If it is a fracture, the ramifications could be very serious. It appears the “intersection compartment” is the area where the aft docking port is located, which is also the area where many Progress freighters have docked in the twenty years since Zvezda was launched. Thus, this could be a stress fracture that can only get bigger with time. Its location might also preclude further dockings at this port, limiting arrivals of future Progress cargo ships.

Fun fact: They pinpointed this location using a floating tea bag.

The tea bag’s sway in zero gravity conditions towards the air leak overboard the space station was registered by cameras, the cosmonaut said. “We believe that we have really identified the probable leakage area. We have distributed a tea bag [in the Zvezda module] before closing the transfer chamber,” Ivanishin said.

The tea bag’s movement was recorded, the Russian cosmonaut said.

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Possible collision today of two big pieces of space junk

9:14 am

A space junk tracking company is predicting a “more than 10%” chance that two large pieces of space junk with a combined mass of more than 6,000 pounds might collide tonight over the south Atlantic just before 9 pm (eastern).

The two pieces, one a defunct Russian satellite and the other a Chinese upper rocket stage, will be moving at more than 32,000 miles per hour relative to each other at the moment when impact might occur.

If they do hit, the collision will break both pieces into many new smaller pieces of space junk. Not a good thing.

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Russia oxygen regeneration system on ISS fails

9:04 am

Russian new sources today reported that their oxygen regeneration system on the ISS module Zvezda has failed.

A Russian cosmonaut told a specialist from the Mission Control Centre in the Moscow Region that the Electron-VM OGS installed in the Russian Zvezda module had failed.

Essentially this information was overheard by Russian sources during communications between mission control and the Russians on-board ISS.

Whether this failure is related to the rise in temperature this week in Zvezda is unknown. Also, the failed unit itself might be one that came with the station when it was launched 20 years ago, or it might be an upgraded unit launched later.

This unit is designed to recycle oxygen on board so as to reduce the need to haul up new supplies. Its failure poses no immediate threat to the station or its crew, since there is plenty of oxygen store on board and the U.S. has its own regeneration unit. However, if it isn’t repairable and can’t be replaced quickly it likely means future cargo manifests will require larger stocks of oxygen. It also might mean a reduction in total crew on ISS, which only now is returning to more than three for long periods because of the initiation of American private ferrying serves.

Meanwhile the location of the leak on Zvezda remains unknown. It needs to be pinpointed and hopefully solved, because if it is a more serious age issue ISS managers need to know.

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Seven countries join the U.S. in signing the Artemis Accords

6:06 pm

NASA announced yesterday that seven countries — the United Kingdom, Australia, Canada, Japan, Luxembourg, the United Arab Emirates and Italy — have now signed the Artemis Accords, the Trump administration’s effort to create a legal framework that will protect property rights in space and get around the legal limitations imposed by the Outer Space Treaty.

I suspect this announcement was in response to statements earlier this week by Dmitry Rogozin, the head of Russia’s space agency, that they will not partner with the U.S. in its Lunar Gateway space station project. Though Rogozin cited other issues for the decision, such at the fact that they would not be treated as an equal partner in Gateway, I suspect the decision was also made because Russia’s government opposes the Artemis Accords and does not wish to sign it. China has said the same.

Since those accords are designed to shift power and control from governments to private enterprise, it is not surprising that Russia and China oppose them. Both are authoritarian top-down societies whose government reflects their culture. To sign an agreement that would take power from the state and give it to their citizens is unacceptable.

So be it. Of the countries that have signed, I expect in future years they will all prosper in space, and eventually force others to accept the ideas of freedom, private property, and capitalism that inspire the accords. Luxombourg is committed to pushing private enterprise and investment in commercial space. The UK, Australia, Canada, and Japan all follow the same principles, and all have robust space industries that should only get stronger.

And the UAE, the new baby on the block, wants to make commercial space a big part of its future. Signing these accords — along with their peace deal with Israel — indicates strongly that they mean business, and that they are trying heartily to separate themselves from the radical Islamic movements that have been poisoning the Arab Middle East for decades.

Moreover, the U.S. is requiring any nation that wishes to participate in its effort to return to the Moon to sign these accords. These nations, and their citizens, will therefore have a chance to contribute to that effort, and likely make a lot of money in the process.

Posting is late today because Diane and I went on an 8-mile hike. My gym now idiotically requires masks while you work out, and I am certainly not going to do that. Therefore, to maintain our cardiovascular systems while strengthening our immune systems (the best defense against all flulike diseases, including the Wuhan virus), we have been doing 6 to 10 mile hikes now twice a week. It means one day a week I need to schedule some posts early, and catch up when I get home. I hope my readers understand.

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Rogozin: Russia mostly bowing out of Gateway

10:14 am

The new colonial movement: The head of Russia’s space agency Roscosmos, Dmitry Rogozin, yesterday announced during a speech at a virtual international space conference that Russia is mostly bowing out of participation in the U.S. lunar Gateway space station project, and will instead seek cooperation with China’s lunar program.

Russia apparently does not like the fact that the U.S. is insisting on taking a lead role in Gateway, and have it designed to primarily meet U.S. goals. Russia has also previously expressed opposition to the Trump administration’s insistence that any partners in Gateway sign the Artemis Accords, designed to provide legal protection for any private investment in space.

Whether they can get the deal they want from China remains very uncertain. China has made it clear they are willing to work with other partners, but China has also made it clear that they — like the U.S. — have their own goals in space, and that anything they do must serve those goals.

In his response, Bridenstine focused on the areas of agreement with Russia (establishing technical standards), but reiterated the U.S.’s commitment to the Artemis Accords. It is clear the Trump administration is fine with Russia’s decision.

For the U.S. Russia’s decision is probably a good thing. It leaves the way open to do what we want, without having to negotiate every decision. (This puts aside the issue on whether Gateway itself is a good decision.)

For Russia this announcement means they are really on their own for the first time since the Soviet era. Following the fall of the Soviet Union in 1991 Russia has largely been incapable of developing any new space project, and has needed to link its effort to the U.S. and ISS in order to be able to accomplish much of anything. Breaking free might actually benefit them, as the competition will force them to focus on their own efforts and actually achieve something.

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Zvezda both leaking and heating up

9:23 am

A Russian news source today reported that the temperature in the ISS module Zvezda has been increasing even as air has been leaking slowly from it.

The article provides little additional detail, other than saying that “normal temperature should be restored” by today.

Why the module should be warming as it slowly leaks air is puzzling. Either way, as this is a module that has been in space for twenty years and is also a key component in the station’s operations, locating the leak is crucial. It might simply be caused by a micrometeorite hit, which can be easily patched. Or it could be caused by something more fundamental, caused by the module’s age, and thus more difficult, possibly even impossible, to fix. If so, the sooner engineers know the better.

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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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