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    Russian Space Program: News & Discussion #4

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    Lennox


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    Post  Lennox Fri Jan 28, 2022 1:12 pm

    Of course there is value doing this. Normal rockets usually have to throttle down during flight until separation, this one doesnt. And also, this is probably to decrease the acceleration of the rocket. Burning all of them at the same time during lift off would not be very efficient due to high acceleration in dense atmosphere. And there might even be some advantage about conserving delta v, we dont know for sure.

    And no, there will still be shock transition when the whole cluster stage falls down. If you consider the cluster stage as a single stage, then essentially this Angara version is similar to any other rocket without booster stages, and they still require ullage motors/ gas pumps or other mechanisms. I would assume that by using the RD-181, the acceleration is less and therefore require a weaker ullage motor? This of course depends on how high the Angara separates its first stage.


    Then again, I don't know much about these stuff, so take what I said with a grain of salt

    As for the URM design, I do agree that it looks like it's defeating the purpose of a URM design. But what if URM was only a framework, and base on that the designers create sustainer core and booster core, and since the URM framework itself is modular, they can still maximize the share of components used in both sustainer and core stage, so that the only difference between the 2 would be the engine
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    Post  Big_Gazza Sat Jan 29, 2022 8:50 am

    China and Russia may sign an agreement on the creation of a lunar station before the end of the year

    source

    BEIJING, January 28. /TASS/. An intergovernmental agreement between Russia and China on cooperation in the creation of a lunar station can be signed before the end of the year. This was announced on Friday at a press conference by Deputy Head of the China National Space Administration (CNSA) Wu Yanhua.

    "Currently, intergovernmental consultations between China and the Russian Federation on the issue of an agreement on the establishment of the International Scientific Lunar Station are in full swing," he said. "Basically, the parties have reached a consensus. It is quite possible that it (the agreement) can be signed as soon as possible this year," Wu Yanhua said.

    On Tuesday, Russian Ambassador to China Andrey Denisov said that an intergovernmental agreement between Russia and China on cooperation in building a lunar station is almost ready and could be signed soon.

    Roscosmos and CNSA in June 2021, as part of the Global Conference on Space Research (GLEX-2021), presented a roadmap for the International Scientific Lunar Station. According to the information provided, the construction of the station should be fully completed by 2035. From 2026 to 2030, two missions are planned to develop technologies for landing and delivering cargo, as well as returning samples of lunar rock to Earth. From 2031 to 2035, the parties will deploy infrastructure in orbit and on the surface of the Moon, including communications systems, as well as electrical power, research and other equipment.

    This really is excellent news, looking forward to watching the ink dry thumbsup

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    Post  Big_Gazza Sat Jan 29, 2022 8:52 am

    Energomash supplied the RD-171MV engine for testing as part of the Soyuz-5 first stage

    source

    MOSCOW, January 28. /TASS/. NPO Energomash handed over the first RD-171MV engine to the Progress Rocket and Space Center last year for testing. Igor Arbuzov, general director of NPO Energomash, announced this.

    "In 2021, we conducted the first tests of the RD-171MV engine designed for the promising Soyuz-5 rocket. All these tests were successful. <...> In 2021, the first engine was delivered for bench tests as part of a stage," Arbuzov said on the air of Roscosmos TV .

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    Post  PapaDragon Sat Jan 29, 2022 10:10 am

    Big_Gazza wrote:Russian Space Program: News & Discussion #4 - Page 27 00111211

    If you take a closer look you'll notice that all 4 main modules are modifications of upcoming NEM module which is very smart move

    Keeping them standardized (and quickly produced) is better than making one-offs like now


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    Post  Big_Gazza Sun Jan 30, 2022 10:39 am

    PapaDragon wrote:If you take a closer look you'll notice that all 4 main modules are modifications of upcoming NEM module which is very smart move

    Keeping them standardized (and quickly produced) is better than making one-offs like now



    Yes, and thankfully with the deployment of Nauka, the use of ancient DOS modules from Soviet times has been discontinued. No more legacy hardware thumbsup
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    Post  kvs Tue Feb 01, 2022 12:58 pm

    Link

    The Zeus nuclear space "tug" will get a 6 Megawatt power plant. The original discussion was about a 1 MW unit.

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    Post  Big_Gazza Tue Feb 01, 2022 2:49 pm

    kvs wrote:Link

    The Zeus nuclear space "tug" will get a 6 Megawatt power plant.    The original discussion was about a 1 MW unit.

     

    This project really is the ducks nuts...  if successful it will introduce a massive paradigm shift in how we operate in space (I hate employing such an over-used cliche but its apt in this case).  What I find amazing is that Western interests just don't seem to be noticing what is being proposed.  NASA doesn't seem to have any space-based nuclear power on its radar screen, ESA even less so.  They would prefer to blabber endlessly about Musk absurd flying silos (which will never be anything more than an unreliable LEO delivery system if he can mange to overcoem the obvious design flaws) yet Zeus/Nukleon is ignored entirely Suspect

    It's as though the exceptionalists just can't even contemplate the idea that Russia is capable of developing such cutting-edge technology.  Surely the moskal mud-hut dwellers who live in squallor without the miracles of "free-dumb" and "de-mock-crazy" couldn't succeed where Uncle Shmuel is too timid to try?  Shocked   Murka has printed greenbacks by the megaton. What do the moskals have to equal that? Well... except for near-zero debt levels, budget surpluses, trade surpluses, uncorruptable people in firm control of national government, efficiently run MIC and technology sectors (no corporate parasites sucking the tax-payer dry while giving zip in return), near unlimited natural resources and many decades of expertise in nuclear engineering...

    I'm actually happy about that state of affairs as it will be another "Zircon" moment when these arrogant dikwads suddenly wake up and smell the coffee, realising that their BS has been called out and they have shit on their faces Laughing

    2030 can't come soon enough Razz

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    Post  kvs Tue Feb 01, 2022 3:48 pm

    The US Gryphon Technologies has obtained a contract from DARPA to develop an NTP system.

    https://www.militaryaerospace.com/commercial-aerospace/article/14231700/gryphon-technologies-tapped-by-darpa-to-develop-nuclear-thermal-propulsion-system

    That was $14 million which means it is a proposal for a proposal. That is, nothing to write home about.

    The Russian nuclear system was refined during the 1980s and 1990s. It is actual evolved hardware and is not just a design proposal.

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    Post  Big_Gazza Tue Feb 01, 2022 4:04 pm

    Nuclear thermal doesn't have legs. For interplanetary propulsion you need as high an ISP as you can get in order to extract the maximum delta V from your propellent mass, and that neccesitates nuclear-electric power coupled with ion or plasma engines.

    USD14M? For that money you will get a concept study, no more. Chuck in an extra $500k and they will give you a pair of embossed coffee mugs and a tour of the plant... Laughing

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    Post  kvs Wed Feb 02, 2022 12:49 am

    I think the label "tug" for this spacecraft is stupid. It is the first nuclear powered spacecraft. May as well call all spacecraft tugs
    if they have a propulsion unit. Clearly a moronic choice. Russia needs to up its game with such details. Trumpet this achievement
    to the world.

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    Post  GarryB Wed Feb 02, 2022 3:17 pm

    Dual use technology... would expect Peresvet to also have a more powerful energy supply mounted on it... and I would think a 6 megawatt power supply small enough to fit into a space craft or truck mounted laser system could be added to a SSK design as a backup power supply...

    To put it in to perspective Lada class SSKs are supposed to have a 2 MW propulsion system (2,000 kW), so a 6mW nuclear generator could power the sub at full speed, run the electronics, and charge the batteries... and of course being in a submarine surrounded by sea water there should be no problems with reactor cooling.
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    Post  kvs Wed Feb 02, 2022 3:39 pm

    I suspect there was some sort of innovation that upgraded the reactor from 1 MW to 6 MW.   If the concept was going to need some
    power range then why not specify it at the outset.   The limitation is the cooling system since in space it can only be through radiative
    emissions and not through conduction or convection.    The cooling structure on this "tug" (looks like a massive solar power array) is
    the bottleneck for the design in terms of size.   So I am guessing that they came up with a more efficient cooling method (still using
    the panel array) and maybe a reactor innovation as well if the initial specs were not deliberately understated.  

    We have here that "Russian secrecy" that gives westerners fake moral authority.   Russians are not spewing PR 24/7.   So everyone
    knows that Musk is already shipping his electric tractor-trailer, has a fully functional hyperloop, and has already designed a "starship"
    going to Mars, with colonists.  But Russia does not make anything.

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    Post  Daniel_Admassu Thu Feb 03, 2022 12:44 am

    kvs wrote:I suspect there was some sort of innovation that upgraded the reactor from 1 MW to 6 MW.   If the concept was going to need some
    power range then why not specify it at the outset.   The limitation is the cooling system since in space it can only be through radiative
    emissions and not through conduction or convection.    The cooling structure on this "tug" (looks like a massive solar power array) is
    the bottleneck for the design in terms of size.   So I am guessing that they came up with a more efficient cooling method (still using
    the panel array) and maybe a reactor innovation as well if the initial specs were not deliberately understated.

    Here is my guess:

    Such an output jump indicates a major redesign rather than a progressive innovation on one or more components involved.

    Normally radiative cooling, specifically in black body radiation, is highly inefficient due to the low rate of thermal loss per unit surface area. Hence the large radiators on spacecraft like the ISS.

    A reactor in nuclear space propulsion system is just half of the equation (Energy). You need reaction mass as well to drive the craft forward. They would surely use a highly volatile (low specific heat) fluid for the purpose (maybe Hydrogen). In liquid form however it will have a substantial capacity for thermal absorption. They might have re-routed the reaction mass flow through the radiators in order to take up the excess heat of a higher reactor output. It will also reinvest the otherwise wasted heat back in the propulsion. This adds another order of complexity on the system as a whole but they might have found it worth the result. This is all just a guess ofcourse.

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    Post  Big_Gazza Thu Feb 03, 2022 1:02 am

    kvs wrote:I think the label "tug" for this spacecraft is stupid.   It is the first nuclear powered spacecraft.    May as well call all spacecraft tugs
    if they have a propulsion unit.   Clearly a moronic choice.   Russia needs to up its game with such details.   Trumpet this achievement
    to the world.

    I think they call it a "tug" as the craft looks to be ultimately intended as a general-purpose transport for modular payloads.  Serial-build models might spend their service lives shuttling between Earth & Mars, towing payload modules (eg station components, supply & fuelling modules, accommodation modules for crew changeovers) on the out-bound leg, and swapping payloads on the inbound leg for return of crews and research materials/surface samples back to Earth.

    Interestingly, Roskosmos have stated that the new ROS station will have a different mission statement to the ISS and will have more emphasis on in-orbit assembly and logistics.  Sounds like they may be envisioning the ROS to be the "train station" where Zeus/Nukleon couples up to it modules, the crew boards, maintenance & repair is performed, reaction fluid is topped up etc.

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    Post  Big_Gazza Thu Feb 03, 2022 1:08 am

    Daniel_Admassu wrote:
    Normally radiative cooling, specifically in black body radiation,  is highly inefficient due to the low rate of thermal loss per unit surface area. Hence the large radiators on spacecraft like the ISS.

    Keep in mind that radiative heat transfer is proportional to the 4th power of temperature (Stefan-Boltzmann law). It works well at high temperatures, indeed, it seems to work well for stars and allows our Sun to heat the Earth and prevent it from freezing out. Laughing

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    Post  Daniel_Admassu Thu Feb 03, 2022 2:15 am

    Big_Gazza wrote:
    Daniel_Admassu wrote:
    Normally radiative cooling, specifically in black body radiation,  is highly inefficient due to the low rate of thermal loss per unit surface area. Hence the large radiators on spacecraft like the ISS.

    Keep in mind that radiative heat transfer is proportional to the 4th power of temperature (Stefan-Boltzmann law). It works well at high temperatures, indeed, it seems to work well for stars and allows our Sun to heat the Earth and prevent it from freezing out. Laughing

    That is technically correct. However with higher temperatures the spectrum migrates from infrared to visible, which lets the sun output at its rate.

    Down here on earth, to handle such temperatures the materials required are simply nonexistent and we would need to consider magnetic confinement - not really workable for the radiation task. The black body radiation range is all we can manage practically.
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    Post  kvs Thu Feb 03, 2022 2:24 am

    The materials aspect is clearly an issue. Maybe they can use silicon nitride radiative elements operating at around 700 K. But we have nothing
    that will not varpourize at 5500 K.

    I think the idea raised about the additional cooling by circulating the reaction mass through the cooling elements or some intermediate stage
    heat exchanger is very likely. But that still leaves the ultimate thermal sink bottleneck at the radiator panels. This would suggest larger panel
    surface area which seems like a total redesign of what we have seen so far.

    As for the label "tug" it is still stupid since they plan on sending interplanetary missions with it. Roscosmos should call it a spacecraft and
    avoid pedantic inanity.

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    Post  GarryB Thu Feb 03, 2022 1:02 pm

    Tug suggests a small boat that helps big vessels manouver in tight spaces like ports.

    These things sound more like train engines that drag the payload (carriages) long distances to their destinations. which is a better description of what these things will be doing.

    A planet and moon shuttle... Deep space shuttle.

    I rather suspect improvements in heat dissipation together with new materials able to remain useful at higher temperatures is part of the key to improved power output, but better more efficient design could also be a factor too.

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    Post  Big_Gazza Fri Feb 11, 2022 8:53 pm

    Soyuz rocket with OneWeb satellites launched from Kourou cosmodrome

    source

    PARIS, 10 February. /TASS/. The Soyuz-ST-B carrier rocket with the Fregat-M upper stage and 34 OneWeb spacecraft launched on Thursday from the Kourou cosmodrome in French Guiana.

    All birds were successfully delivered to correct orbits, and the Fregat u/s stage was re-entered for disposal. russia

    More info on A.Zaks site source.

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    Post  Big_Gazza Tue Feb 15, 2022 5:28 pm

    Soyuz-2.1a rocket carrying Progress spacecraft blasts off from Baikonur

    source

    MOSCOW, February 15. /TASS/. A Soyuz-2.1 rocket carrying the Progress cargo spacecraft has blasted off from Site 31 at the Baikonur spaceport, according to a live broadcast on the website of Russia’s Roscosmos State Space Agency.

    The Progress MS-19 cargo spacecraft has separated from the third stage of the Soyuz-2.1a carrier rocket, according to a live broadcast on the website of Russia’s Roscosmos State Space Agency.

    The spacecraft, scheduled to dock with the International Space Station (ISS) at 10:08 am Moscow time on February 17, will spend 370 days in orbit.

    This was the first launch from Baikonur in 2022. The spacecraft is expected to deliver about 1,600 kilograms of cargo to the ISS, including onboard equipment, cables for the Nauka laboratory module, supplies for the life-support system, medical monitoring devices and sanitary supplies, clothes and food for cosmonauts, target loads for scientific research and experiments, as well as 430 kilograms of fuel components, 420 liters of drinking water and 40 kilograms of compressed nitrogen tanks.

    Roscosmos said earlier that the Progress spacecraft would also deliver supplies to address a leak in the Zvezda module. In addition, the spacecraft is carrying six nanosatellites created at Russia’s Southwestern State University, which will be launched from the ISS during spacewalks as part of the Radioskaf scientific and educational experiment.

    russia

    Edit:  Anatoly Zaks site has extra info (no surprise!): source

    According to Roskosmos, the supplies to be delivered to the ISS aboard Progress MS-19 included 431 kilogram of propellant for refueling the station, 420 liters of water in the tanks of the Rodnik system and 40 kilograms of compressed air in the tanks of the oxygen supply system.

    In its pressurized cargo section, the spacecraft was to carry 1,632 kilograms of dry cargo for the crew and equipment including cable sets for the upgrades of the Nauka module, medical and hygiene supplies, clothing and standard food packages for the Expedition 66 crew.

    The onboard cargo included materials for the following experiments:

    • Neirolab kits for the Pilot-T experiment series studying the influence of space flight on the quality of cosmonauts' professional activities;
    • Packages for Vozdukh and Poverkhnost kits for the Aseptik experiment seeking the development of sterility measures during biological research in space flight;
    • Bioproby kit for the Biodegradatsiya experiment looking at the influence of micro-flora on structural materials in space and at the development of biological safety methods in space flight;
    • Biomodul kit for the Fotobioreaktor experiment studying the possibility of producing food and oxygen out of photo-synthetic Spirulina algae in weightlessness;
    • Chashki and Probirki kits for the Biomag-M experiment studying the influence of space flight on the properties of organisms protected by the Earth's magnetic field;
    • BOP, PM and PS kits for the Kaskad experiment, studying effective methods of biotechnological production of cellular cultures in microgravity;
    • Probiovit kits for development of production techniques in microgravity used in pharmacological products with immunological properties.


    In its cargo bay, Progress MS-19 also carried six cubsat-class satellites: YuZGU-55 from No. 5 to No. 10 developed by the South-Western University, in the city of Kursk, for the Radioskaf experiments and intended for launch during spacewalks, Roskosmos said.

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    Post  Big_Gazza Sun Feb 20, 2022 12:38 pm

    The tank of the new Soyuz-5 rocket was sent for testing

    On February 18, 2022, a fuel tank (G tank) of the Soyuz-5 LV first-stage bench was sent from JSC RCC Progress to JSC TsNIIMash for static tests.

    At present, specialists of RCC Progress JSC, together with specialists of TsNIIMash JSC, have begun the final stage of static tests of the G tank of the first stage of the promising Soyuz-5 rocket - confirmation of strength and admission to cold and fire tests.

    Tank strength testing is carried out on two assemblies. The first stage is carried out on the basis of a testabout the center of the RCC "Progress" and provides an imitation of the transportation of the tank. The second stage - at the experimental base of the Center for Strength of JSC "TsNIIMash" - provides for the simulation of the force impact of the oxygen-kerosene rocket engine RD-171MV on the tank structure during firing bench tests.

    Conducting static tests of the Soyuz-5 first-stage fuel tank is a significant step in the production of a new generation launch vehicle for Progress RCC JSC. In 2021, the specialists of the enterprise on the basis of the test center conducted static tests of the oxidizer tank to confirm the strength and admission to cold and fire tests of the bench block of the first stage of the Soyuz-5 launch vehicle.

    source

    Russian Space Program: News & Discussion #4 - Page 27 1st_st10

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    Post  Big_Gazza Wed Feb 23, 2022 8:27 pm

    The Khrunichev Center replaced low-quality components on the Protons, where it was required

    MOSCOW, February 22. /TASS/. Center them. M. V. Khrunichev replaced low-quality components in all Proton-M launch vehicles, where they were found. This was announced to reporters on Tuesday by the Director General of the Center. M. V. Khrunichev Alexey Varochko.

    "We have replaced all the components on those machines on which we found low-quality components," Varochko said.

    According to the director general of the Center Khrunichev, after the discovery of low-quality components (hardware, bolts), the entire batch of missiles was recalled for testing in order to be sure of their reliability.

    In March 2020, a number of media outlets, citing the Director General of the Center. Khrunicheva Varochko said that the Proton-M launch vehicle for launching the ExoMars mission would be rechecked for low-quality components, similar to those found in the rocket for launching Express communication satellites.

    source

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    Post  Big_Gazza Sat Feb 26, 2022 9:36 am

    Venus mission funding to begin in 2022

    source

    MOSCOW, 25 February. /TASS/. Funding for the Venera-D mission will begin this year, and funds have also been allocated for new lunar vehicles. This was announced today by the head of Roscosmos Dmitry Rogozin.

    "This year we are starting to start financing the mission to Venus - Venera-D. We have allocated funds for new lunar vehicles - the orbital Luna-26 and the heavy landing Luna-27. We are deploying work on the new space observatory Spektr-UF "Last year, with the support of the President of the Russian Federation, we secured funding for the development of scientific space," Rogozin said in an interview with Channel One .

    The Venera-D mission consists of Russian landers and orbiters. It was previously planned that this project would be joint with the United States: at the end of 2013, a joint working group was created, but its activities were suspended for some time. In the fall of 2015, she resumed her work.

    Venera-D is proposed to be launched using the Angara-A5 heavy launch vehicle. The estimated launch date for the mission was 2029. Earlier, Oleg Korablev, Deputy Director of IKI RAS, said that the cost of development work in the framework of the Venera-D project would be approximately 17 billion rubles. According to the President of the Russian Academy of Sciences Alexander Sergeyev, the cost of the mission could reach $1 billion.

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    Post  Hole Thu Mar 03, 2022 11:41 pm

    Engine sales to Murica have been cancelled. thumbsup

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    Russian Space Program: News & Discussion #4 - Page 27 Empty Re: Russian Space Program: News & Discussion #4

    Post  Kiko Fri Mar 04, 2022 12:37 am

    Hole wrote:Engine sales to Murica have been cancelled. thumbsup
    Further details:

    Russia Stops Deliveries of Rocket Engines to US, Roscosmos Head Says

    Earlier in the week, Roscosmos head Dmitry Rogozin refuted claims that the Russian space agency had allegedly "lost control" of its satellites, stressing that any cyberattacks against the country's satellites are a "casus belli".

    Russia will stop deliveries of rocket engines to the United States, Roscosmos head Dmitry Rogozin announced Thursday.

    "Not only are we refusing to supply these engines [RD-180], but we are also refusing maintenance of the remaining engines. We are talking about 24 more engines", the space agency head said.

    Since the mid-1990s, 122 RD-180 engines for Atlas missiles have been delivered to the United States, 98 of them have been used.

    Rogozin additionally announced that Russia will end cooperation on experiments at the International Space Station (ISS) with Germany.

    "Taking into account the completely unacceptable actions of our German colleagues, primarily the German Centre for Aviation and Cosmonautics, I turned off one of the telescopes of our space observatory 'Spektr-RG', which is located at a distance of 1.5 million kilometres from Earth at the La Grange point L2. This is a completely civilian international mission to explore the starry sky", Rogozin elaborated, saying that Russia has all the essential resources to conduct the experiments by itself.

    According to the space agency head, Russia's space programme will face some corrections. He explained that the country will focus on creating satellites in line with the interests of both Roscosmos and the Russian Defence Ministry.

    He stressed the space agency will make certain that the satellites it creates will have a "dual purpose" given the "conditions that our country is in now".

    Roscosmos is among the many entities that have faced a wave of anti-Russian sanctions in the wake of Moscow's military operation in Ukraine. Earlier in the day, the space agency revealed that the last 56 Russian employees had left the space centre in French Guiana after Roscosmos suspended its cooperation with the European Union in response to the sanctions.

    On Wednesday, Rogozin also refuted claims of Russia's satellites and Roscosmos' control centre being "hacked", warning that any cyberattacks against the country's satellites are a "casus belli" (a reason for war). His remarks followed allegations on social media accounts that a hacker group affiliated with the Anonymous collective had "shut down" Roscosmos' control centre.

    https://sputniknews.com/20220303/russia-stops-deliveries-of-rocket-engines-to-us-roscosmos-head-says-1093546777.html

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    Russian Space Program: News & Discussion #4 - Page 27 Empty Re: Russian Space Program: News & Discussion #4

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