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lenorebeadsman.bsky.social
tra la gente e col loro contestatissimo leader

le purghe interne procedono indisturbate

solo a dicembre rimossi Wu Yansheng presidente di China AerospaceScience and Technology Corporation che sovrintende allo sviluppo dei veicoli spaziali e dei sistemi missilistici del paese👇
December 31, 2023 at 11:09 AM
engineersheaven.bsky.social
🛸 What factors are considered while deciding the shape of a spacecraft?

👉 Click here: www.engineersheaven.org/forum/topic/...
to visit our website and read the full article.

#SpacecraftDesign #AerospaceScience #FlightMechanics #EngineeringDesign
What factors are considered while decide the shape of a spacecraft?...
there are different kind of space craft i have seen in images if any kind of shape is working in space why there are different different kinds of s...
www.engineersheaven.org
April 16, 2025 at 10:58 AM
ivojuri.bsky.social
Geomagnetic storms can disrupt satellites! 🛰️⚡Research reveals how increased atmospheric drag from storms led to Starlink satellite losses in 2022. Understanding space weather is key to protecting future missions! 🚀🌍

#SpaceWeather #Starlink #SatelliteDecay #GeomagneneticStorms #LEO #AerospaceScience
https://doi.org/10.1186/s40623-024-02124-2 The graphical abstract visually represents how geomagnetic storms influenced the loss of Starlink satellites. It highlights key factors such as increased solar wind, interplanetary magnetic field disturbances, and rising atmospheric density, which led to enhanced drag and orbital decay. Importance: This visual summary helps quickly convey the connection between space weather events and satellite losses, emphasizing the need for improved storm forecasting and mitigation strategies in satellite operations. The schematic diagram in Figure 1 outlines the process used to analyze how geomagnetic storms contributed to the loss of Starlink satellites. The flow follows these key steps: Starlink Satellite Decay Event – The investigation starts with reports of Starlink satellites losing altitude and re-entering the atmosphere. SpaceX reported that geomagnetic storms played a role, but further analysis is needed. Solar and Geomagnetic Activity Analysis – Researchers examine solar wind speed (Vsw), interplanetary magnetic field (IMF Bz), and electric field (Ey) to determine how energy from the Sun impacts Earth’s magnetosphere. Geomagnetic Indices Evaluation – Disturbance storm time (Dst), auroral electrojet (AE), and Ap indices are analyzed to measure the intensity of geomagnetic storms and substorms. Solar Radiation Impact – The study considers the influence of extreme ultraviolet (EUV) radiation (F10.7 index) on atmospheric density changes, as increased solar activity can expand the thermosphere. Atmospheric Density and Drag Calculation – Using models like NRLMSISE-00, the study tracks variations in species densities (O, O₂, N₂) and evaluates how these changes increase atmospheric drag at satellite altitudes. Satellite Position and Altitude Tracking – The Two-Line Element (TLE) data from SpaceTrack is used to determine which satellites experienced significant orbital decay and their positions in magnetic local time. Comparison of Decayed vs. Non-Decayed Satellites – The study compares satellites that lost altitude with those that remained stable, linking decay events to space weather conditions and geomagnetic activity. Key Takeaway: The flow of the schematic diagram shows how different space weather factors, such as geomagnetic storms and increased atmospheric drag, led to the loss of some Starlink satellites while others remained unaffected. Understanding this process is crucial for mitigating future satellite losses due to space weather.
February 21, 2025 at 4:19 AM
academiceurope.bsky.social
Job - Alert 🚀

➡️ Wissenschaftliche*r Mitarbeiter*in (m/w/d) - auf dem Gebiet der Mehrskaligen Schädigungsmechanik

Deadline: 2024-11-15

Location: Germany, München, Neubiberg, Bayern, Erding

APPLY: www.academiceurope.com/job/?id=5654

#jobs #hiring #aerospacescience #naturalscience #physics
Academic Europe - Wissenschaftliche*r Mitarbeiter*in (m/w/d) - auf dem Gebiet der Mehrskaligen Schädigungsmechanik
www.academiceurope.com
October 17, 2024 at 12:47 PM
bitcoin-love.bsky.social
The primary reason a spacecraft becomes extremely hot during atmospheric re-entry is not friction with the air, but rather compressive heating (shock wave heating) caused by the rapid compression of air in front of the vehicle. 🔥🚀 #ReEntry #ShockWaveHeating #AerospaceScience #CompressiveHeating
May 24, 2026 at 4:37 AM