Gateway Momentum Unloading Using a Solar Parasol
Bibliographic record
Abstract
This paper describes the use of a robotic arm for momentum unloading and orbit control. A panel is attached to the end of a robotic arm. It is positioned, in angle and position, to optimize unloading. The robot arm can move about the spacecraft giving additional degrees of freedom. The panel can be stowed when necessary. The work is based partially on a technology developed by the Canadian Space Agency. The parasol can be grabbed and deployed by the robot arm whenever it is needed, to remove momentum. When it is not needed the parasol is retracted and stowed. The system can be used in high orbits for both momentum and orbit control using solar pressure. In lower orbits, it can use atmospheric drag for the same purpose. This paper focuses on its use for momentum unloading for the NASA Gateway space station. The paper includes a complete GN&C design using single gimbal CMGs with thrusters for orbit control and backup attitude control. The dynamical equations are derived and simulation results are presented for all modes of operation. This includes an optimal attitude profile for minimizing solar and gravity gradient torques over the Gateway orbit.
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How this classification was reachedexpand
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 | 0.001 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".