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GarryB
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    Russia's research bases in Antarctica

    PapaDragon
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    Post  PapaDragon Sun Nov 29, 2020 4:51 pm

    Shitty news, I'm sad to report No

    Apparently Sevmorput suffered propeller malfunction off the coast of Africa while en route to Antarctica and as a result components of the new habitat for Vostok Station will not be delivered on time which will delay construction for a year

    https://bmpd.livejournal.com/4197545.html



    This is now the whole habitat looks when packaged and loaded up:

    Russia's research bases in Antarctica 8545088_original
    GarryB
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    Post  GarryB Mon Nov 30, 2020 4:13 am

    So they have an extra year to get the plans in place to make it work... shit happens.
    Tsavo Lion
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    Post  Tsavo Lion Mon Nov 30, 2020 4:37 am

    Or they could offload its cargo & send An-22/124s &/ IL-76s to deliver it to Vostok directly.
    Hole
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    Post  Hole Mon Nov 30, 2020 10:44 am

    An An-124 can´t land there and you would need 500+ flights with the Il-76. The current Wostok station worked for decades, it will survive another year.

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    Tsavo Lion
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    Post  Tsavo Lion Mon Nov 30, 2020 4:39 pm


    • Take-off run (maximum take-off weight): 3,000 m (9,800 ft)
    • Landing roll (maximum landing weight): 900 m (3,000 ft)
    • https://en.wikipedia.org/wiki/Antonov_An-124_Ruslan#Specifications_(An-124-100M)



    [th]Runways[/th]
    [th]Direction[/th][th]Length[/th][th]Surface[/th][th]ft[/th][th]m[/th]
    03/2111,9333,637Ice
    https://en.wikipedia.org/wiki/Vostok_Station#History

    From the above, they can land & take off with full load on that airfield. 

    C-17/5s used similar length airstrips: 
    https://en.wikipedia.org/wiki/Amundsen%E2%80%93Scott_South_Pole_Station#Transportation
    https://en.wikipedia.org/wiki/Ice_Runway
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    Post  PapaDragon Mon Nov 30, 2020 5:59 pm

    GarryB wrote:So they have an extra year to get the plans in place to make it work... shit happens.

    There are no upsides to this just delay and hassle

    They might consider building additional ships of thing class after this, while Sevmorput seemed like a dead end 30 years ago it has proven to be very useful lately but fact remains that it was sitting in port for decades before it was recommissioned, that leaves consequences

    They have blueprints and shipyard now so they might as well cranck out another one or two


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    Post  Hole Mon Nov 30, 2020 8:32 pm

    The length of the landing area doesn´t count, it is the weight of the plane. They´re operating on ice strips down there.

    Back in the 80´s the plan was to build at least 6 ships of that class but then came Gorbi, Chernobyl and Jelzin. Don´t know which one was the worst "accident".
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    Post  kvs Mon Nov 30, 2020 11:52 pm

    Hole wrote:The length of the landing area doesn´t count, it is the weight of the plane. They´re operating on ice strips down there.

    Back in the 80´s the plan was to build at least 6 ships of that class but then came Gorbi, Chernobyl and Jelzin. Don´t know which one was the worst "accident".

    They are all part of the same "accident".

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    Post  Tsavo Lion Tue Dec 01, 2020 3:58 am

    Hole wrote:The length of the landing area doesn´t count, it is the weight of the plane. They´re operating on ice strips down there.
    The sea ice needs to be at least two meters thick to support the weight of a jet.
    https://www.nsf.gov/geo/opp/support/jettrans.jsp

    Pilots landing C-17 Globemaster III cargo aircraft on the sea ice runway report that the surface is stable, not unlike landing on concrete.
    https://en.wikipedia.org/wiki/Ice_Runway


    The Russian stations there have runways on glacier/land, not sea, & when needed, they can maintain 2m thick ice on them.  Field experiments show that an artificial ice platform up to 3m thick could be built by watering.
    https://documents.ats.aq/ATCM25/wp/ATCM25_wp015_e.pdf

    https://www.youtube.com/watch?v=0BeIOLwQOKY
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    Post  GarryB Tue Dec 01, 2020 9:29 am

    There are no upsides to this just delay and hassle

    They might consider building additional ships of thing class after this, while Sevmorput seemed like a dead end 30 years ago it has proven to be very useful lately but fact remains that it was sitting in port for decades before it was recommissioned, that leaves consequences

    They have blueprints and shipyard now so they might as well cranck out another one or two

    The fact that they would build another few ships on its own shows a potential upside... a delay and hassle is no big deal... it is not like they are sitting on bare ice waiting for these new buildings to arrive... they can get by another year with the facilities they have in place and next year they get the big upgrade.

    Tsavo... look at the image of the ship and the parts and pieces stacked high on that rather large ship... it is like a kitset house... except it is actually a kitset compound in the middle of nowhere. Delivering bits at a time, slowly, would not be the ideal way of doing it... what if bits go missing or it is delivered in the wrong order so they can't start building until the last flight delivers its load?

    Makes much more sense to deliver it in one go by ship and then vehicle transport across the ice like they planned.
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    Post  Hole Tue Dec 01, 2020 11:31 am

    Max. weight C-17: 263tons
    Max. weight An-124: 405tons

    Nuff said. afro
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    Post  Tsavo Lion Tue Dec 01, 2020 5:02 pm

    Maximum Takeoff Weight: 840,000 pounds (381,024 kilograms)
    https://www.af.mil/About-Us/Fact-Sheets/Display/Article/104492/c-5-abc-galaxy-c-5m-super-galaxy/#:~:text=The%20C%2D5M%2C%20with%20a,limited%20only%20by%20crew%20endurance.

    405Ts-381Ts=24Ts difference.
    https://www.pinterest.com/pin/669558669578844064/visual-search/

    Each An-124-100 can take 24Ts less cargo & still deliver 96Ts to Vostok.
    They can bring all those boxes in a matter of a few weeks- that would be good training for crews, & other such training can be cancelled to save $.


    Last edited by Tsavo Lion on Tue Dec 01, 2020 5:36 pm; edited 1 time in total
    kvs
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    Post  kvs Tue Dec 01, 2020 5:34 pm

    In Antarctica it is not sea ice runways like in the Arctic. The problem is the roughness of the air strip and not its load bearing ability.
    The Il-76 can handle such runways, but the An-124 likely can't. The bigger the aircraft the more fragile it becomes. Material
    strength does not scale arbitrarily with size. Make an aircraft big enough using the same materials and design concepts
    and it will collapse on itself.

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    Post  Tsavo Lion Tue Dec 01, 2020 5:42 pm

    If they could handle C-5s, why can't they handle An-124s, which could be of the same weight with 24Ts less cargo?
    GarryB
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    Post  GarryB Wed Dec 02, 2020 5:37 am

    The simple fact is that they are not going to use aircraft to deliver the base.

    It will go down next year.
    George1
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    Post  George1 Mon Jan 11, 2021 2:45 am

    Russia's only nuclear powered container ship Sevmorput of FGUP Atomflot (ФГУП " АтомФлот "), as posted by some weeks ago, suffered a technical damage by loss of one of it's blades of the propeller during cruising near the equator to Antarctic to deliver Russia's newest research station "Vostok". Because of that techniscal snag, Sevmorput was cruising back to safe water near the angolan coast in front of the port of Luanda to carry out a repair.
    This video is a visual documentation about the overall travel, the damaged propeller and the repair of it. It took 96 hours to dive and 48 to cut the opposite blade with 1250 exothermal electrodes. 52 bottles of oxygen where used for diving operations. This critical operation was done by three divers and finished on December 1st. The operation took overall 24 days without the possibility to be fully maneuverable.
    On December 31st, Sevmorput reached the russian port of St. Petersburg for unloading and repair - to make a possible second attempt by the end of this year to deliver the research station.

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    George1
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    Post  George1 Sun Jan 17, 2021 6:59 pm

    Akademik Treshnikov research vessel reaches Antarctic with first wintering team

    In particular, the ship brought components for the new wintering complex for the Vostok station, as well as food for the Russian polar stations

    ST. PETERSBURG, January 15. /TASS/. The Akademik Treshnikov science expedition vessel arrived to the unloading point near the Russia’s Progress Antarctic station, the expedition’s bulletin for January 7 to 14 says.

    "On January 7, the ship approached the unloading point, prepared by the Progress station hydrologists in the bay of Tala. […] Some 1,000 tonnes of cargo was unloaded from the ship," the bulletin says.

    In particular, the ship brought components for the new wintering complex for the Vostok station, as well as food for the Russian polar stations.

    "On January 11, the ship began moving out of the Progress station area," the bulletin says, adding that, due to heavy ice conditions, it only reached clear water by January 13 and headed towards Mirny, where it plans to arrive on January 16.

    https://tass.com/science/1245443

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