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📑New Research: Modeling Thermal Jitter in Spacecraft Structures! New publication titled "Modelization of Thermally Induced Jitter in an Orbiting Slender Structure" in NODYCON - International Nonlinear Dynamics Conference, Advances in Nonlinear Dynamics, Springer. [DOI: 10.1007/978-3-031-50631-4_45]. This research explores how temperature fluctuations can cause vibrations in spacecraft, particularly in long, thin structures. Understanding these vibrations (thermal jitter) is crucial for designing stable and high-precision spacecraft. The paper outlines an analytical method for analyzing thermal jitter while considering the non-linear nature of the problem. This method provides valuable insights for designers to ensure their spacecraft perform optimally. Link: https://lnkd.in/ettr7epz Maurizio Parisse I Pier Marzocca #ThermalJitter #SpacecraftDesign #AerospaceEngineering #ThermalJitter #SpacecraftDesign #AerospaceEngineering #StructuralDynamics #SpacecraftVibration #SatelliteTechnology #Thermomechanics #SpaceStructures #PrecisionEngineering #FutureOfSpaceExploration #BreakthroughResearch #SpaceTwitter #AskMeAnything #SpaceScience #EngineeringChallenge #ThermalManagement

New Post: Voyager-1 sends readable data again from deep space -By Jonathan Amos Science correspondent 2 hours ago Image caption, Artwork: The Voyager-1 probe was launched from Earth in 1977 The US space agency says its Voyager-1 probe is once again sending usable information back to Earth after months of spouting gibberish.  The 46-year-old Nasa spacecraft is humanity’s most distant object. A computer fault stopped... By Jonathan AmosScience correspondent2 hours agoImage caption, Artwork: The Voyager-1 probe was launched from Earth in 1977The US space agency says its Voyager-1 probe is once again sending usable information back to Earth after months of spouting gibberish.  The 46-year-old Nasa spacecraft is humanity's most distant object.A computer fault stopped it returning readable data in November but engineers have now fixed this.For the moment, Voyager is sending back only health data about its onboard systems, but further work should get the scientific instruments back online."Voyager-1 spacecraft is returning usable data about the health and status of its onboard engineering systems," Nasa said in a statement."The next step is to enable the spacecraft to begin returning science data again."Voyager-1 was launched from Earth in 1977 on a tour of the outer planets, but then just kept going.It moved beyond the bubble of gas emitted by the Sun - a domain known as the heliosphere - in 2012, and is now embedded in interstellar space, which contains the gas, dust and magnetic fields from other stars. A corrupted chip has been blamed for the ageing spacecraft's recent woes.This prevented Voyager's computers from accessing a vital segment of software code used to package information for transmission to Earth.For a period of time, engineers could get no sense whatsoever out of Voyager, even though they could tell the spacecraft was still receiving their commands and otherwise operating normally.The issue was resolved by shifting the affected code to different locations in the memory of the probe's computers.Voyager-1 departed Earth on 5 September 1977, a few days after its sister spacecraft, Voyager-2.The pair's primary objective was to survey the planets Jupiter, Saturn, Uranus and Neptune - a task they completed in 1989.They were then steered towards deep space, in the general direction of our galaxy's centre.Their power comes from radioisotope thermoelectric generators (RTGs), which convert heat from decaying plutonium into electricity. The continual decay process means the generators produce slightly less power each year.How much longer the Voyagers can continue is uncertain, but engineers have until now always come up with strategies to eke out a few extra years of operations. Voyager-2 is a little behind its twin and moving slightly slower.It's just over 20 billion km (13 billion miles) from Earth.Even though both are travelling at over 15 km per second (9 miles/s), they would not approach another star for tens of thousands of year

New Post: Voyager-1 sends readable data again from deep space -By Jonathan Amos Science correspondent 2 hours ago Image caption, Artwork: The Voyager-1 probe was launched from Earth in 1977 The US space agency says its Voyager-1 probe is once again sending usable information back to Earth after months of spouting gibberish.  The 46-year-old Nasa spacecraft is humanity’s most distant object. A computer fault stopped... By Jonathan AmosScience correspondent2 hours agoImage caption, Artwork: The Voyager-1 probe was launched from Earth in 1977The US space agency says its Voyager-1 probe is once again sending usable information back to Earth after months of spouting gibberish.  The 46-year-old Nasa spacecraft is humanity's most distant object.A computer fault stopped it returning readable data in November but engineers have now fixed this.For the moment, Voyager is sending back only health data about its onboard systems, but further work should get the scientific instruments back online."Voyager-1 spacecraft is returning usable data about the health and status of its onboard engineering systems," Nasa said in a statement."The next step is to enable the spacecraft to begin returning science data again."Voyager-1 was launched from Earth in 1977 on a tour of the outer planets, but then just kept going.It moved beyond the bubble of gas emitted by the Sun - a domain known as the heliosphere - in 2012, and is now embedded in interstellar space, which contains the gas, dust and magnetic fields from other stars. A corrupted chip has been blamed for the ageing spacecraft's recent woes.This prevented Voyager's computers from accessing a vital segment of software code used to package information for transmission to Earth.For a period of time, engineers could get no sense whatsoever out of Voyager, even though they could tell the spacecraft was still receiving their commands and otherwise operating normally.The issue was resolved by shifting the affected code to different locations in the memory of the probe's computers.Voyager-1 departed Earth on 5 September 1977, a few days after its sister spacecraft, Voyager-2.The pair's primary objective was to survey the planets Jupiter, Saturn, Uranus and Neptune - a task they completed in 1989.They were then steered towards deep space, in the general direction of our galaxy's centre.Their power comes from radioisotope thermoelectric generators (RTGs), which convert heat from decaying plutonium into electricity. The continual decay process means the generators produce slightly less power each year.How much longer the Voyagers can continue is uncertain, but engineers have until now always come up with strategies to eke out a few extra years of operations. Voyager-2 is a little behind its twin and moving slightly slower.It's just over 20 billion km (13 billion miles) from Earth.Even though both are travelling at over 15 km per second (9 miles/s), they would not approach another star for tens of thousands of year

🌕 Exploring the Thermo-Optical Challenges of Lunar and Martian Dust on Spacecraft Materials Dust might be a small issue on Earth, but for space missions, lunar and Martian dust present significant challenges. In our latest blog, we explore insightful research by the European Space Agency (ESA) on how this dust affects spacecraft materials, specifically impacting solar absorptance, thermal emittance, and reflectivity—vital for spacecraft performance and mission longevity. https://lnkd.in/gkszXnVE #SpaceExploration #ESA #LunarDust #Mars #ThermoOptics #SurfaceOptics #SpacecraftMaterials #ThermalControl #AerospaceEngineering #SpaceInnovation

New Post: Voyager-1 sends readable data again from deep space -By Jonathan Amos Science correspondent 2 hours ago Image caption, Artwork: The Voyager-1 probe was launched from Earth in 1977 The US space agency says its Voyager-1 probe is once again sending usable information back to Earth after months of spouting gibberish.  The 46-year-old Nasa spacecraft is humanity’s most distant object. A computer fault stopped... By Jonathan AmosScience correspondent2 hours agoImage caption, Artwork: The Voyager-1 probe was launched from Earth in 1977The US space agency says its Voyager-1 probe is once again sending usable information back to Earth after months of spouting gibberish.  The 46-year-old Nasa spacecraft is humanity's most distant object.A computer fault stopped it returning readable data in November but engineers have now fixed this.For the moment, Voyager is sending back only health data about its onboard systems, but further work should get the scientific instruments back online."Voyager-1 spacecraft is returning usable data about the health and status of its onboard engineering systems," Nasa said in a statement."The next step is to enable the spacecraft to begin returning science data again."Voyager-1 was launched from Earth in 1977 on a tour of the outer planets, but then just kept going.It moved beyond the bubble of gas emitted by the Sun - a domain known as the heliosphere - in 2012, and is now embedded in interstellar space, which contains the gas, dust and magnetic fields from other stars. A corrupted chip has been blamed for the ageing spacecraft's recent woes.This prevented Voyager's computers from accessing a vital segment of software code used to package information for transmission to Earth.For a period of time, engineers could get no sense whatsoever out of Voyager, even though they could tell the spacecraft was still receiving their commands and otherwise operating normally.The issue was resolved by shifting the affected code to different locations in the memory of the probe's computers.Voyager-1 departed Earth on 5 September 1977, a few days after its sister spacecraft, Voyager-2.The pair's primary objective was to survey the planets Jupiter, Saturn, Uranus and Neptune - a task they completed in 1989.They were then steered towards deep space, in the general direction of our galaxy's centre.Their power comes from radioisotope thermoelectric generators (RTGs), which convert heat from decaying plutonium into electricity. The continual decay process means the generators produce slightly less power each year.How much longer the Voyagers can continue is uncertain, but engineers have until now always come up with strategies to eke out a few extra years of operations. Voyager-2 is a little behind its twin and moving slightly slower.It's just over 20 billion km (13 billion miles) from Earth.Even though both are travelling at over 15 km per second (9 miles/s), they would not approach another star for tens of thousands of year

New Post: Voyager-1 sends readable data again from deep space -By Jonathan Amos Science correspondent 2 hours ago Image caption, Artwork: The Voyager-1 probe was launched from Earth in 1977 The US space agency says its Voyager-1 probe is once again sending usable information back to Earth after months of spouting gibberish.  The 46-year-old Nasa spacecraft is humanity’s most distant object. A computer fault stopped... By Jonathan AmosScience correspondent2 hours agoImage caption, Artwork: The Voyager-1 probe was launched from Earth in 1977The US space agency says its Voyager-1 probe is once again sending usable information back to Earth after months of spouting gibberish.  The 46-year-old Nasa spacecraft is humanity's most distant object.A computer fault stopped it returning readable data in November but engineers have now fixed this.For the moment, Voyager is sending back only health data about its onboard systems, but further work should get the scientific instruments back online."Voyager-1 spacecraft is returning usable data about the health and status of its onboard engineering systems," Nasa said in a statement."The next step is to enable the spacecraft to begin returning science data again."Voyager-1 was launched from Earth in 1977 on a tour of the outer planets, but then just kept going.It moved beyond the bubble of gas emitted by the Sun - a domain known as the heliosphere - in 2012, and is now embedded in interstellar space, which contains the gas, dust and magnetic fields from other stars. A corrupted chip has been blamed for the ageing spacecraft's recent woes.This prevented Voyager's computers from accessing a vital segment of software code used to package information for transmission to Earth.For a period of time, engineers could get no sense whatsoever out of Voyager, even though they could tell the spacecraft was still receiving their commands and otherwise operating normally.The issue was resolved by shifting the affected code to different locations in the memory of the probe's computers.Voyager-1 departed Earth on 5 September 1977, a few days after its sister spacecraft, Voyager-2.The pair's primary objective was to survey the planets Jupiter, Saturn, Uranus and Neptune - a task they completed in 1989.They were then steered towards deep space, in the general direction of our galaxy's centre.Their power comes from radioisotope thermoelectric generators (RTGs), which convert heat from decaying plutonium into electricity. The continual decay process means the generators produce slightly less power each year.How much longer the Voyagers can continue is uncertain, but engineers have until now always come up with strategies to eke out a few extra years of operations. Voyager-2 is a little behind its twin and moving slightly slower.It's just over 20 billion km (13 billion miles) from Earth.Even though both are travelling at over 15 km per second (9 miles/s), they would not approach another star for tens of thousands of year

The #pluto #newhorizons mission has been detecting higher than expected amounts of #dust in the #Kuiper Belt. It isn't clear if this is from radiation pressure from sunlight, Kuiper Belt Objects colliding, or some other source. The mission should have enough propellant fuel and power from the #Pu238 powered GPHS-RTG to keep mapping the dust distribution until the 2040's. #NASA #NewHorizons #JHUAPL #SWRI #DOE #INL https://lnkd.in/gbKAm3BK

We have observed a certain number of spacecraft and rocket stages #explosions in orbit. Working on simulations and testing of #fragmentation events, we were asking ourselves the following question: how #debris #clouds could be affected by the object attitude before the event? Here you can find the published paper on #CEAS #Space Journal, with a few preliminary answers to this question: https://lnkd.in/dm-rXuVS A great thank you to my co-authors Cinzia Giacomuzzo and Alessandro Francesconi. Dipartimento di Ingegneria Industriale - DII UNIPD Università degli Studi di Padova Agenzia Spaziale Italiana European Space Agency - ESA

How Knot Theory Can Help Spacecraft Can Change Orbits Without Using Fuel

Voyager 1 Returning Science Data From All Four Instruments. NASA’s Voyager 1 spacecraft is conducting normal science operations for the first time following a technical issue that arose in November 2023. The team partially resolved the issue in April when they prompted the spacecraft to begin returning engineering data, which includes information about the health and status of the spacecraft. On May 19, the mission team executed the second step of that repair process and beamed a command to the spacecraft to begin returning science data. Two of the four science instruments returned to their normal operating modes immediately. Two other instruments required some additional work, but now, all four are returning usable science data. The four instruments study plasma waves, magnetic fields, and particles. Voyager 1 and Voyager 2 are the only spacecraft to directly sample interstellar space, which is the region outside the heliosphere — the protective bubble of magnetic fields and solar wind created by the Sun. While Voyager 1 is back to conducting science, additional minor work is needed to clean up the effects of the issue. Among other tasks, engineers will resynchronize timekeeping software in the spacecraft’s three onboard computers so they can execute commands at the right time. The team will also perform maintenance on the digital tape recorder, which records some data for the plasma wave instrument that is sent to Earth twice per year. (Most of the Voyagers’ science data is sent directly to Earth and not recorded.) Voyager 1 is more than 15 billion miles (24 billion kilometers) from Earth, and Voyager 2 is more than 12 billion miles (20 billion kilometers) from the planet. The probes will mark 47 years of operations later this year. They are NASA’s longest-running and most-distant spacecraft. Both spacecraft flew past Jupiter and Saturn, while Voyager 2 also flew past Uranus and Neptune. Karthika Rani Ramdoss #voyager1 #sciencedata #instruments #nasa #spacecraft #november2023 #engineeringdata #plasmawave #magneticfield #voyager2 #heliosphere #thesun #onboardcomputers #jupiter #saturn #uranus #neptune