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home | newest check | boards | help index | log | ps | userlogin | send sysop | slog | status forward | bcm news | users | version | remove cookieWG3K > ANS 15.04.24 10:37l 63 Lines 4102 Bytes #14 (0) @ AMSAT BID : $ANS105.11 Read: GUEST Subj: Satellite Shorts From All Over Path: JH4XSY<IW0QNL<VE2PKT<KA1VSC<WG3K Sent: 240415/0128Z 3135@WG3K.#SMD.MD.USA.NOAM LinBPQ6.0.24 NASA now knows what knocked Voyager 1 offline, but it will take a while to fix. Voyager 1窶冱 remaining Flight Data Subsystem (its redundant copy failed in 1982) is the reason that the distant spacecraft is currently offline. Voyager窶冱 FDS were the first computers on a spacecraft to use volatile memory. Unfortunately, one of Voyager 1窶冱 FDS memory chips is malfunctioning窶年ASA hopes they can work around it, but it will likely take months.(ANS thanks The Orbital Index for the above information.) If you have 26 minutes to spare, and want to explore more intricacies of Ohm窶冱 Law than you were taught in school, watch electricity flow through a wire a nanosecond at a time at https://www.youtube.com/watch?v=2AXv49dDQJw (ANS thanks The Orbital Index for the above information.) Following repairs to a liquid oxygen leak in the Falcon Heavy窶冱 core booster, NASA and SpaceX have rescheduled the launch of the GOES-U satellite, the final installment in NOAA窶冱 GOES-R Series, for June 25. The adjustment aims to ensure thorough examination and resolution of the issue, discovered during a routine inspection in February. With preparations now back on track, the deployment of GOES-U from Kennedy Space Center窶冱 Launch Complex 39A will proceed using a SpaceX Falcon Heavy rocket. Managed cooperatively by NOAA and NASA, the GOES-R Series Program encompasses satellite operations, data dissemination, and ground systems oversight, with NASA窶冱 Goddard Space Flight Center leading spacecraft acquisition and instrument development. Lockheed Martin窶冱 contributions include design, construction, and testing of the satellites, while L3Harris Technologies has provided key instruments and ground systems essential for capturing atmospheric observations. (ANS thanks Clarence Oxford, SpaceDaily, for the above information) The European Union is poised to finalize a security deal with the United States, enabling payments to Elon Musk窶冱 SpaceX for satellite launches due to delays in Europe窶冱 Ariane rocket system. Approved by national general affairs ministers, the agreement grants European Union and European Space Agency (ESA) personnel continuous access to launch facilities and prioritized debris retrieval rights in case of SpaceX rocket failures. With a 200 million deal already struck last year, SpaceX is contracted to launch four Galileo satellites as Ariane 6 faces further delays. While Ariane 6 is slated for a summer launch, commercial missions await later scheduling. The arrangement with SpaceX allows for two Galileo satellite launches this year, necessitated by Soyuz launcher cancellations and Ariane 6 delays. The security pact ensures access to classified Galileo equipment, with provisions for debris retrieval and a sunset clause by 2027 to address concerns about reliance on SpaceX over Ariane. (ANS thanks Joshua Poaaner, Politico Europe, for the above information) NASA has been tasked by the White House to establish a lunar-centric time reference system, known as Coordinated Lunar Time (LTC), to aid missions requiring extreme precision on the moon. The agency has until the end of 2026 to set up LTC, which is not akin to Earth窶冱 time zones but provides a frame of time reference for the moon. LTC will accommodate the slightly faster passage of time on the moon, approximately 58.7 microseconds each day compared to Earth, due to its lower gravity. It will serve as a benchmark for timekeeping for lunar spacecraft and satellites, crucial for their missions. NASA窶冱 Artemis program, set to begin astronaut missions to the lunar surface in 2026, necessitates LTC for synchronization among Earth, lunar satellites, bases, and astronauts, without which data transfers and communications could be compromised. Developing LTC will require international agreements, possibly influenced by the Universal Coordinated Time (UTC) standard, with potential implementation involving atomic clocks on the moon and adherence to existing space agreements like the Artemis accords. (ANS thanks Diana Ramirez-Simon, The Guardian, for the above information)
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