Fundamentals of the Plasma Sail Concept: Magnetohydrodynamic and Kinetic Studies
Why this work is in the frame
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Bibliographic record
Abstract
The Mini-Magnetospheric Plasma Propulsion system (M2P2) was proposed by Winglee et al. to harness the kinetic energy of the solar wind by creating a large magnetic bubble around the spacecraft. This bubble would be supported by plasma injection into a strong magnetic field produced by an electromagnet onboard the spacecraft. In the case of M2P2, the size of the magnetic bubble is actually less than, or comparable to, the scale of these characteristic parameters. Therefore, a kinetic approach, which addresses the small-scale physical mechanisms, must be used. A two-component approach is adopted to determining a preliminary estimate of the momentum transfer to the plasma sail. The first component is a self-consistent MHD simulation of the plasma flow near the spacecraft. It is shown that the fluid treatment is valid to roughly 5 km from the source. The MHD solution is used at this boundary as initial conditions for the hybrid simulation. The hybrid simulations showed that the forces delivered to the innermost regions of the plasma sail are considerably smaller (∼10) than their MHD counterparts. Furthermore, these forces are roughly perpendicular to the solar wind flow, in contrast to the MHD forces that are essentially aligned with the solar wind direction.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it