Structural and Attitude Dynamics and Control of a Solar Sail using Two Degrees of Freedom Tip Vanes
Bibliographic record
Abstract
This paper delves into the structural and attitude dynamics of a cord-mat square solar sail being controlled by two Degrees Of Freedom (DOF) tip-vane actuation. The paper’s main goal is to simulate and analyze the behaviour of a solar sail under a tip-vane attitude control scheme using a geometrically-nonlinear elastic Finite Element Method (FEM) model of the sail. The controller dynamics is of particular interest as the control solution of the two DOF tip-vane actuation is based on a flat, inflexible sail. The sail structure is further augmented by a wrinkling model for handling the membranes under negative strain. The model is further augmented by the disturbance forces produced by the reflective sail membrane itself. A combined, dynamic simulation of all of the above are performed to analyze the performance of the control system as a whole.
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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 | 0.000 |
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 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".