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Thread: International Space Station

  1. #151
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    It seems a little strange to me that a SpaceX Dragon cargo ship is on the way to the ISS (launched yesterday) and a Russian Progress cargo ship just launched this morning. I would think they'd space them out a little more. Must be a lot of packages to deliver by Christmas.
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  2. #152
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    The Russians are bringing the reindeer. SpaceX is bringing the barbecue sauce.

  3. #153
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    Quote Originally Posted by Swift View Post
    It seems a little strange to me that a SpaceX Dragon cargo ship is on the way to the ISS (launched yesterday) and a Russian Progress cargo ship just launched this morning. I would think they'd space them out a little more. Must be a lot of packages to deliver by Christmas.
    There are 2 major sections of ISS; US Orbital Segment (USOS) and Russian Orbital Segment (ROS), each with separate docking facilities. Plenty of room, but the ISS propulsion system can only be refuelled from ROS.

    Don't be surprised to see Crew Dragon, Starliner and Dream Chaser all docked at the USOS in a couple years.

  4. #154
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    That would be nice to see.

    Now Starship, that probably needs a wide berth--a bit large.

  5. #155
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    Quote Originally Posted by publiusr View Post
    That would be nice to see.

    Now Starship, that probably needs a wide berth--a bit large.
    The National Space Society posted this Starship docking arrangement on the USOS. The version of Starship shows the wrong fins, but the size is right.

    big-falcon-spaceship.jpg

    SpaceX itself shows the modern version docking at the same USOS port.

    Screenshot_2019-11-13-19-48-13.jpeg
    Last edited by docmordrid; 2019-Dec-08 at 04:45 AM.

  6. #156
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    The ISS is from the Space Shuttle era, so luckily for Starship it's designed to dock craft of very significant size.
    With sufficient thrust, water towers fly just fine.

  7. #157
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    The Lunar Gateway should be able to dock with a Starship, but the size disparity could cause a discussion over who's docking with who.

    It'd also be interesting to see Starship dock at the Chinese station, but given the Wolf Amendment* it couldn't be a NASA flight. It'd need to be commercial.

    * law which restricts NASA's ability to work directly with China

  8. #158
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    If anything should be upgraded on the ISS, it's this.

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  9. #159
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    "NASA outlines the near and far future of the Space Station"

    My two cents worth comments - is NASA's budget going to be increased to support it.

    https://www.nasaspaceflight.com/2020...re-of-station/

    NASA has laid out plans for their future utilization of the International Space Station (ISS) over the next decade, including upgrades scheduled to be conducted on the outpost in the near term, its future use as an analog for human exploration missions beyond Earth Orbit, and the commercial expansion to the orbital outpost.


    During the NASA Advisory Council meeting, Kirk Shireman, NASA’s head of the ISS program, delivered a presentation on the near and long-term future for the orbital outpost.
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  10. #160
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    Very good news—this isn’t some spent upper stage to be chunked.

  11. #161
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    Heard of this new module for the ISS from Russia many years ago. Now it is about to become a reality.

    "Russia’s Nauka ISS module arrives at Baikonur for final launch preparations"

    https://www.nasaspaceflight.com/2020...r-final-preps/

    The newest habitable module for the International Space Station (ISS), Nauka, has arrived at the Baikonur Cosmodrome in Kazakhstan for final preparations before launch. The module’s launch – which has been delayed for more than 13 years – will mark the resumption of Station expansion.

    Nauka is currently scheduled to launch on a Proton-M rocket in April 2021 and will be attached to the ISS at the location where the Pirs Docking Compartment is currently located.
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  12. #162
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    It's interesting, when I saw there was a new post in this thread I assumed it was because of the leak. I hope they sort it out quickly.
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  13. #163
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    From what it says, they’ve been aware of the leak for nearly a year (discovered sometime last September), but it has been small and not increasing. Currently they have time to look into it, but it doesn’t sound like a major concern.

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  14. #164
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    Quote Originally Posted by Jens View Post
    It's interesting, when I saw there was a new post in this thread I assumed it was because of the leak. I hope they sort it out quickly.
    A report on the leak. They hope to carry out some tests this weekend to narrow down which module has the leak.

    https://www.businessinsider.com/inte...-danger-2020-8

    The International Space Station, an orbiting laboratory the size of a football field, is not perfectly sealed and always leaking a bit of air.

    But now that rate of air loss has "slightly increased," NASA said, and the three men living aboard the station have to hunker down while mission controllers on Earth figure out where the problem is — and how to fix it.

    In a blog post, NASA said the American and Russian space agencies were "working a plan to isolate, identify, and potentially repair the source." NASA added: "The leak is still within segment specifications and presents no immediate danger to the crew or the space station."

    NASA astronaut Chris Cassidy and his Roscosmos crew mates Ivan Vagner and Anatoly Ivanishin will spend the weekend huddled inside the station's Zvezda service module.
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  15. #165
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    "ISS crew to spend weekend in one module to track down air leak"

    https://spacenews.com/iss-crew-to-sp...down-air-leak/

    The three-person crew of the International Space Station will spend the weekend confined to a single module to help engineers track down the source of a small but persistent air leak there.

    NASA announced Aug. 20 that the station’s crew of NASA astronaut Chris Cassidy and Roscosmos cosmonauts Anatoly Ivanishin and Ivan Vagner will stay in the station’s Zvezda module from the evening of Aug. 21 until the morning of Aug. 24. Hatches separating all of the station’s modules from one another will be closed through the weekend.

    That effort is intended to identify the source of a small air leak first noticed on the station last September and that has more recently increased. The loss of air took time to characterize, the agency said in a statement, because of other station activities, such as spacewalks and the arrival and departure of spacecraft.

    The leak, NASA added, “is still within segment specifications and presents no immediate danger to the crew or the space station.” The agency hopes to have a preliminary indication of which module is the source of the leak in about a week.
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  16. #166
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    "Russian cosmonaut sheds light on how ISS crew deals with suspected air leak"

    https://www.spacedaily.com/reports/R..._leak_999.html

    Russian cosmonaut Ivan Wagner recently noted that the crew has everything it needs and can engage in physical training and Earth observation experiments.

    As the current crew of the International Space Station has been forced to isolate themselves in the Russian segment of the orbital facility due to a suspected air leak in one of the US modules, Russian cosmonaut Ivan Wagner has shared details of the current accommodation facilities of his American colleague, astronaut Chris Cassidy.
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  17. #167
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    Quote Originally Posted by selvaarchi View Post
    "Russian cosmonaut sheds light on how ISS crew deals with suspected air leak"

    https://www.spacedaily.com/reports/R..._leak_999.html
    Ahem...

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  19. #169
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    "Russian cosmonaut sheds light on how ISS crew deals with suspected air leak"

    https://www.spacedaily.com/reports/R..._leak_999.html

    Russian cosmonaut Ivan Wagner recently noted that the crew has everything it needs and can engage in physical training and Earth observation experiments.

    As the current crew of the International Space Station has been forced to isolate themselves in the Russian segment of the orbital facility due to a suspected air leak in one of the US modules, Russian cosmonaut Ivan Wagner has shared details of the current accommodation facilities of his American colleague, astronaut Chris Cassidy.
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  20. #170
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    National Geographic on "What the International Space Station teaches us about our future in space"

    https://www.nationalgeographic.co.uk...uture-in-space

    Flying some 240 miles above Earth's surface at 17,500 miles an hour, the International Space Station (ISS) is a science laboratory dedicated to helping humans learn how to live in space. Crucially, that means figuring out how the space environment affects biology–and human bodies, especially. Other onboard experiments are aimed at better understanding how the cosmos works, from the highest-energy particles that streak through our solar system to the faraway, extremely dense corpses of former stars.

    Continuously occupied by rotating crews since November 2000, the space station is the work of five space agencies: NASA, Russia’s Roscosmos, the European Space Agency, the Japanese Aerospace Exploration Agency, and the Canadian Space Agency. Hundreds of spacefarers have visited the ISS—primarily professional space travellers, although a handful of space tourists have also made the journey. Here’s how the ISS came to be and what scientists hope to learn from experiments conducted there.
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  21. #171
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    "ISS may need to evade US Military cubesat"

    https://www.spacedaily.com/reports/R...hreat_999.html

    The ISS underwent a Debris Avoidance Manoeuvre (DAM) this July after a threat of colliding with the remains of a Soviet-era satellite emerged. A DAM is not something out of the ordinary for the station, unlike partial evacuations, which have been performed five times to date, and are used when it is thought to be too late to avoid a collision.

    Russian Space Agency Roscosmos has warned that the International Space Station (ISS) has a high chance of colliding with the low-orbit US military satellite BRICSat-2, which has "turned into so-called space debris". A collision is expected to take place at 23:23 GMT on 13 September, Roscosmos experts calculated, suggesting that the ISS must perform a Debris Avoidance Manoeuvre (DAM) around one or two hours prior to the threat.
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  22. #172
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    Quote Originally Posted by selvaarchi View Post
    "ISS may need to evade US Military cubesat"
    "Specialists decide not to adjust ISS orbit due to US satellite"

    https://tass.com/science/1200299

    Russia’s state space corporation Roscosmos said on Sunday its specialists have decided not to adjust the orbit of the International Space Station (ISS) because of a US former military satellite BRICSat-2.

    "On the basis of data analysis, the ISS mission control specialists have taken a decision not to conduct the avoidance maneuver," Roscosmos said.

    According to Roscosmos, the Automated Warning System on Hazardous Situations in Outer Space, or ASPOS OKP, indicates that the former US military satellite BRICSat-2 poses no threat to the International Space Station.

    According to Roscosmos, the Russian side has repeatedly warned about the threat posed by low-orbit satellite groupings and "suggests special regulations be worked out."
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  23. #173
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    Its seems odd to call a piece of US military hardware "Soviet era". Perhaps "Cold War era" would be better?

    I was under the impression that this sort of thing is SOP for operating the ISS, and will only get worse if we don't develop some LEO trash removal technologies.

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  24. #174
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    "NASA has narrowed the source of an elusive leak on the space station to 2 Russian modules — one of which provides crucial life support"

    https://www.businessinsider.com/nasa...2-areas-2020-9

    The International Space Station has been leaking for more than a year.

    While the station is perpetually losing some air, officials first noticed an increase in that airflow last September. At the time, the leak wasn't major, but this summer, officials noticed an uptick in that already higher-than-usual rate.

    So in late August, the three crew members aboard the station — NASA astronaut Chris Cassidy and Roscosmos cosmonauts Anatoly Ivanishin and Ivan Vagner — hunkered down in one module of the station and sealed off the others. After closing the hatches, they conducted leak tests on each section.

    But their data didn't reveal leaks in those sections.
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  25. #175
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    "Engineers found the location of an elusive leak on the space station: It's in a Russian module that provides crucial life support"

    https://www.businessinsider.com/nasa...station-2020-9

    On Monday night, NASA flight controllers woke the three men living on the International Space Station. A small air leak seemed to have grown quickly, and ground control wanted to find it fast.

    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.
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  26. #176
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    They have yet to find the leak in the Zvezda Service Module.

  27. #177
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    Quote Originally Posted by bknight View Post
    They have yet to find the leak in the Zvezda Service Module.
    They have now.

    https://abcnews.go.com/Technology/na...ry?id=73338110

    NASA officials said the leak on the International Space Station was from a Russian module on the orbiting laboratory.

    Astronauts aboard the space station and flight controllers on Earth have been trying to track down the location of this tiny leak for weeks.

    NASA said in a statement Tuesday that the leak, which appeared to be growing in size, had finally been spotted in the main work area of the Zvezda Service Module on the ISS.

    "The size of the leak identified overnight has since been attributed to a temporary temperature change aboard the station with the overall rate of leak remaining unchanged," the statement said.
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  28. #178
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    "ISS Crew instructed to resolve air leak issue before mission change in Mid-October"

    https://www.spacedaily.com/reports/I...tober_999.html

    The current expedition on the International Space Station (ISS) has been tasked with fixing the air leak in the Russian Zvezda module before the arrival of the next crew later in mid-October, according to instructions sent from the Moscow Mission Control Centre.

    "The rate of leakage ... is of the order of 0.9 millimetres [on the barometer column per day] from the atmosphere altogether. And in this regard, guys, we cannot shift this problem, or at least, it is very undesirable ... to shift it to the next crew," a specialist in Moscow told cosmonauts Anatoly Ivanishin and Ivan Vagner, as heard in a NASA live feed of ground-to-ISS communications.
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  29. #179
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    "Russian Cosmonauts to test new system extracting water from urine on ISS"

    https://www.spacedaily.com/reports/R...n_ISS_999.html

    The urine-reclaming system helps decrease the amount of water that needs to be shipped to the ISS via cargo spacecraft.

    Russian cosmonauts on board of the International Space Station are getting ready to test the effectiveness of a new experimental water recycling system.

    The new piece of equipment, designated SRV-U-RS and installed in the Rassvet module of the station, allows extracting water from humane urine, to be used for drinking.
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  30. #180
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    "ISS crew fails to resolve air leak issue in Russia's Zvezda Module with adhesive tape"

    https://www.spacedaily.com/reports/I..._tape_999.html

    The crew of the International Space Station (ISS) has failed to fix the air leak in the Russian Zvezda by using adhesive tape in the module's section, where a crack is supposedly located, as the pressure continues to decline, according to conversations between the ISS crew and Earth, broadcast by NASA.

    On Thursday, the Moscow Mission Control Center instructed Russian cosmonaut Ivan Vagner to use as much tape as possible in Zvezda's intermediate chamber, where the source of the leak is expected to be located.

    On Friday morning, Vagner informed specialists at the Center that the pressure in the compartment had declined by 17 mm Hg down to 715 mm Hg.
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