Tag: Planetary Science and Exploration
AI crater navigation maintains accuracy for lunar mapping
—
What the study found The study found that STELLA, described as the first end-to-end crater-based navigation (CBN) pipeline for long-duration lunar mapping, can maintain metre-level position accuracy and sub-degree attitude accuracy on average in a lunar mapping setting. Why the authors say this matters The authors say this bridges a gap between CBN studies for…
Vertical vibration changes regolith flow but lowers average discharge rate
—
in EngineeringWhat the study found Vertical vibrations changed how lunar regolith simulant moved through a hopper, making the flow more regular and reducing clogging, but the average mass flow rate stayed lower than in purely gravitational flow. Why the authors say this matters The authors state that hoppers are expected to be essential for handling lunar…
Microgravity lowers the jamming point of granular materials
—
in EngineeringWhat the study found Granular materials jam at a lower packing density in microgravity than on Earth. The study also found that, in microgravity, cohesive interparticle forces increase the stress needed for granular media to flow. Why the authors say this matters The authors say understanding granular behavior in low gravity is crucial for planetary…
Vibration effects on lunar regolith simulants depend on particle size and direction
—
in EngineeringWhat the study found The simulants showed different convective behavior depending on particle size and whether vibrations were vertical or horizontal. Vertical vibrations strengthened convective motion as average particle size increased, while horizontal vibrations generally produced stronger convection as average particle size decreased. Why the authors say this matters The study suggests this matters because…
