More leaks found in Russian Zvezda module on ISS

Earlier this week Russian astronauts located and patched three more leaks in the 20+ year old Russian Zvezda module on ISS.

Prior to this week’s discovery, the recent patching done by Russian astronauts had reduced the air loss by about half. They need to do another seal test of Zvezda to see if these newer patches have reduced it further.

The report at the link from Russia is as usual very vague. No photos of any of the leaks have been released, by either Russia or NASA. No cause either has been described. This lack of information suggests that the leaks represent a more systemic problem, possibly related to stress fractures from age and wear. If so, it also suggests that Zvezda is nearing its pull-date. How this central module will be replaced from the station remains a major mystery.

Above all, this puts some urgency to the launch of newer modules, such as those being built by the private company Axiom.

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Russian gov’t okays extension of U.S cooperative space treaty to ’30

The Russian government yesterday officially approved an extension to 2030 of the cooperative space treaty with the United States that was initially signed in 1992.

According to the TASS article at the link, the U.S. government has already approved this extension. The original agreement was for U.S. flights to the Russian space station Mir. It has been renewed four times since to cover the deal to build and use ISS.

This could very well be the last extension of this deal. By 2030 private commercial American stations should be operational, and the age of some of the oldest sections of ISS will likely need replacement. At that point the U.S. will probably decide to retire its half of ISS.

What the Russians will do is uncertain. The government doesn’t have the cash to build its own station. Nor has that government allowed a private commercial space industry to thrive and thus be financially able to build private commercial stations. Russia may separate its part of ISS and attempt to keep it aloft, but some of their modules are the oldest, and have shown signs of that age.

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Air leak continues despite repairs on Zvezda module of ISS

According to a report today in the Russian press, the air in the Zvezda module of ISS continued to leak away slowly during a test, following this week’s repair of two cracks in the module’s hull.

At about 07:00 GMT on Saturday, ISS cosmonaut Sergei Ryzhikov told a specialist at the Mission Control Center, located near Moscow, that the pressure in the intermediate chamber of the Zvezda module was 678 millimetres of mercury. The pressure stood at 730 millimetres of mercury on Friday evening, right after the hatch of the compartment was closed. Thus, the pressure in the chamber decreased by 52 millimetres of mercury over 11.5 hours.

Based on the thorough nature of the two repairs, this leak must be coming from another very tiny leak that has not yet been detected. Though the leak is very slow and thus not an immediate threat to the astronauts on board, it suggests once again that the leaks are coming from stress fractures resulting from Zvezda’s 20-plus years in orbit. If so, the problem is very serious indeed. Zvezda is the central module for ISS. Replacing it will not be simple or easy.

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Russia: Air leaks fixed on Zvezda

According to the Russian state-run press, Russian astronauts have completed their repair work on the ISS module Zvezda and are about to seal the module to test their work.

“The crew of the International Space Station has completed the repair and recovery work on the hull of the Zvezda module. In the coming days, Sergei Ryzhikov and Sergei Kud-Sverchkov will close the hatches in the Zvezda module to check the atmospheric level,” the press office said.

Previous reports suggested the astronauts had located a total of two cracks, both now sealed.

The larger question however remains. Are the cracks stress fractures, and if so do they suggest that Zvezda’s 20-year-old hull is beginning to fail? The Russians have been very silent about these questions, though they have admitted the possibility once or twice, almost as an aside.

Nor has NASA been forthcoming. The American space agency has apparently joined the Russians in keeping this problem out of the news, at all costs. Once, the employees at NASA were Americans who demanded openness from Russia and from themselves. No more. Increasingly our government workers are indistinguishable from Soviet apparatchiks, whose main goal was to protect the government from bad press.

If Zvezda’s hull is failing then ISS faces some very serious engineering issues. They can be solved, but not by silence and sticking one’s head in the sand.

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NASA forges deal with private company to put American on Russian Soyuz

Capitalism in space: It appears NASA used the private company Axiom as its go-between to obtain a seat for an American astronaut on the next Soyuz launch to ISS in April.

The deal is very complex.

Based on the initial partnership arrangement between the Russians and NASA, astronauts for both countries would fly in equal numbers on each other’s spacecraft in a barter arrangement that involved no exchange of funds. Russia however has been balking at flying its astronauts on Dragon, claiming it does not yet meet their standards for a manned spacecraft. Thus, they have been demanding that NASA pay them to fly an American on Soyuz.

NASA meanwhile doesn’t have the funds, but it still wants to make sure there is always an American on board ISS, and to do that requires a second ferry besides Dragon to provide redundancy. With Boeing’s Starliner delayed, they have been trying to get a seat on Soyuz as part of that barter deal, to no avail.

The solution? Private enterprise! To get that Soyuz seat at no cost it appears NASA made a barter deal with the private space company Axiom. Axiom is apparently paying the Russians for a seat on next month’s Soyuz flight, which will be filled by a NASA astronaut, and gets in return from NASA a free spare seat on a later American capsule.

The result? NASA pays nothing to the Russians, and still gets its seat on Soyuz. Where Axiom is getting the financing for its purchase is unclear, but because it is getting an extra seat at no cost that it can sell later for a big profit, I suspect that financing was not difficult to obtain.

The details for Axiom’s deal with Roscosmos have not as yet been revealed, though I am sure the Russians charged Axiom plenty for the seat on Soyuz. I also suspect that amount was far less then what the Russians would have charged NASA directly.

Once Starliner finally becomes operational NASA will have enough redundancy for getting Americans to ISS it will no longer need the Russians. Hopefully that will happen by the end of this year. If so, such shenanigans will no longer be required.

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Russian astronauts begin work to seal 2nd Zvezda leak on ISS

After successfully sealing the largest crack on the twenty-year-old Zvezda module on ISS, Russian astronauts have now begun work on sealing a second such crack.

The report, from Russia’s state-run news service TASS, is not very informative. It does not report the size of the leaks, their nature, and any other important conclusions the Russians have gathered about Zvezda’s overall condition and future, based on these cracks.

Nor has state-run NASA been very transparent on this subject, releasing little further information. The silence from these government entities about the cracks is very worrisome, as it suggests these fixes are merely bandaids on a more serious issue with Zvezda’s structure, and our dishonest and bureaucratic governments do not wish to reveal this fact to the public.

I hope I am wrong, but suspect I am not. If Russia follows its pattern for the past half century, they will provide a more detailed report only after the problem has been completely solved. If these patches are merely temporary fixes over a more serious problem, don’t expect that detailed report for some time.

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NASA increases ISS prices to commercial customers by 700%

On February 25th NASA quietly announced that it was increasing the prices it charges for private commercial payloads to ISS sevenfold, immediately putting some customers out of business.

In the statement, published with little fanfare on the agency’s website, NASA said it was updating that price list “to reflect full reimbursement for the value of NASA resources.” The decision to do so, NASA said, was based on “discussions with stakeholders, the current market growth, and in anticipation of future commercial entities capable of providing similar services.”

By removing the subsidy, the prices of those services went up significantly. The cost to transport one kilogram of cargo up to the station, known as “upmass,” went from $3,000 to $20,000. The cost to bring that one kilogram back down from the station, “downmass,” went from $6,000 to $40,000. One hour of crew member time, previously $17,500, is now $130,000.

The sudden change in prices, which took effect immediately, took some ISS users by surprise. An executive with one company, who spoke on background because that company is still evaluating the impacts of the pricing change, was not aware of NASA’s decision to raise prices until contacted by SpaceNews.

“NASA has not done a good job communicating with the stakeholders,” said Jeffrey Manber, chief executive of Nanoracks. “We are in discussions with customers and suddenly we are being notified of a major increase.” That sudden increase in prices, he said, forced Nanoracks to suspend discussions with two potential customers, who he said were “priced out of their budget” by the increase.

Note that NASA’s statement apparently contained a lie. It claimed the agency talked with “stakeholders,” but apparently those stakeholders knew nothing about it until it happened.

I strongly suspect this is a Biden administration decision, not one from NASA. Democratic Party politicians don’t see government as a servant of the people, but as a tool to rule them. A private industry is beginning to sprout using government resources in space, and rather than encourage its growth they instead want to squeeze as much cash from it as possible.

Moreover, why is NASA charging anything for bringing cargo to ISS? They don’t provide the transportation, launch companies like SpaceX and ULA do. The only appropriate charge NASA should be charging is rental at the station.

If this was a NASA decision solely and Trump was in power, I would expect it to be soon canceled. Under Biden there is no chance. More likely that administration either endorsed it or imposed it.

What this means is that future commercial flights will soon shift away from ISS. I expect Axiom to work hard to get its station modules launched and separated from ISS as quickly as possible. I also expect to see more independent Dragon manned tourist missions, like the one planned for this fall, that do not dock with the station.

In fact, here is a thought that I think has already entered Elon Musk’s brain. In the next year SpaceX is likely going to do its first Starship orbital test flight. Why not put a test habitable module on board that can be used by tourists at a reasonable price? There is money to be made here, especially because NASA is gouging its customers and there is plenty of margin to undercut the agency’s absurd prices.

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Scheduling conflicts at ISS delay Starliner unmanned demo flight till May

NASA and Boeing have been forced to again delay the second unmanned Starliner demo mission to ISS due to scheduling conflicts with Soyuz and Dragon missions in April, forcing the flight to slip to May.

A Russian Soyuz capsule is set for launch April 9 from the Baikonur Cosmodrome in Kazakhstan with two Russian cosmonauts and a U.S. astronaut. The Soyuz MS-18 spacecraft will dock with the space station about three hours after launch, and an outgoing three-person crew will depart and return to Earth on April 17.

SpaceX’s next Crew Dragon flight to the space station is set for launch from NASA’s Kennedy Space Center in Florida around April 20 with astronauts Shane Kimbrough, Megan McArthur, Akihiko Hoshide, and Thomas Pesquet. Their mission, known as Crew-2, will last about six months.

The four astronauts who flew to the station last November on the Crew-1 mission — aboard the Crew Dragon “Resilience” spacecraft — will return to Earth in late April or early May. Both docking ports capable of receiving the Boeing Starliner capsule will be occupied during the crew handover in late April.

They had hoped to launch on April 2nd, but I suspect strongly that Boeing and NASA are glad to have this extra time.

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Update on ISS leaks: Several to be drilled & sealed over next 5 days

According to Russia’s state news service, astronauts on ISS have located several leaks in the 20-year-old Zvezda module of ISS, and will spend the next five days fixing them.

This report clarifies a previous report that left more questions than it answered. It appears that there are several leaks that were found using a microscope sent to the station and temporarily sealed. Now the goal in the next five days will be to permanently seal them.

[A] hole will be drilled at one of the fracture’s ends, which will be filled with cold welding and sealed with a fluoroplastic film on top. The same procedure will be done with other holes. After that, the surface will be sanded and wiped with alcohol wipes and covered with a sealant. Overall, the cosmonauts will put three layers of the sealant.

The repair method suggests that they are all cracks. To stop a crack from growing you drill out the end.

That they are all cracks further suggests that these are all stress fractures. Thus, no matter how permanent these particular repairs are, they cannot solve the greater problem of the aging module itself. We should expect more cracks to appear in the future unless something more drastic is done.

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First air leak crack on ISS has not grown

A inspection of the first air leak crack that had been found and patched in the Zvezda module on ISS last year has found that it apparently not increased in size since then.

The size of a crack in the intermediate chamber of the Russian Zvezda module aboard the International Space Station (ISS) remains unchanged, cosmonaut Sergei Ryzhikov reported to Russia’s Flight Control Center on Wednesday. “It [the length] has not changed. As in the previous measurements, I do not see any changes,” Ryzhikov said during his talks with Mission Control broadcast on NASA’s website.

On February 23, the cosmonaut carried out work with a microscope to trace another possible air leak. The photos of the work were transmitted to Earth and the video from GoPro cameras will be sent via the Russian broadband communications system. After completing the work, the cosmonaut reinstalled the patch in the area of the crack.

This Russian report is decidedly unclear about some details. Though it appears the astronaut was using the microscope to inspect another leak, he also apparently removed the patch on the first leak to check the crack for any changes, then replaced it. How one removes and replaces such a patch is a puzzle however. Such things are generally not removable.

No matter. The important detail is that the crack has not grown. If it was a stress fracture the recent dockings of spacecraft to the nearby port might cause it to grow. That it has not is good news.

The bad news is that the inspection did not find the second small leak that is thought to be in this same Zvezda module.

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Axiom raises $130 million in investment capital

Capitalism in space: The private space station company Axiom announced today that it has obtained $130 million in investment capital during its most recent round of fund-raising.

The funding will allow the company to expand, including doubling its current workforce of about 110 people this year, Michael Suffredini, president and chief executive of Axiom, said in an interview. It will also support quarterly payments to Thales Alenia Space, which is building the pressurized elements of the first modules. The company recently moved into a two-story building in Houston and is buying a new test facility, with plans to establish a campus at Spaceport Houston, also known as Ellington Airport.

“This is a really the major step for us,” he said. “The B round is typically where you get your first large investment, but more importantly than the money is the community of investors that you put together, so that future rounds are largely from those investors.” That group of investors, he said, was “a perfect fit for us and puts us in a good position, however we want to go forward.”

Suffredini also admitted that while helps get those first modules built for launch to ISS in ’24, they will still need “probably between half a billion and a billion dollars” to build their full private space station.

Sounds like a lot, eh? ISS cost about $100 billion, but that is not including the contributions of the U.S.’s international partners. It is also likely a conservative estimate, as it likely does not include any of NASA’s overhead in connection with the station. Construction officially began in 1994, but actually started a decade earlier when President Reagan first proposed its predecessor, the Freedom station, and those costs are not included as well.

So Axiom will build its private station for about a billion, and get it done in about five years. NASA spent anywhere from $100 to $200 billion, and took more than three decades to get it launched and built.

Which product would you buy?

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