Passive Thermal Management of an Electric Trainer Aircraft Battery Pack Considering Aging
Bibliographic record
Abstract
This paper investigates the use of a passive in-flight battery thermal management system for an electric trainer aircraft. The proposed architecture employs a high-conductivity heat pipe coupled with a heat sink to provide cooling. Two different thermal management approaches are used for ground and flight operations. During charge, a ground-based air conditioning unit is used for thermal management. In flight, the system relies on preconditioning of the battery pack’s thermal mass to limit the temperature rise to acceptable levels, reducing the onboard weight and complexity associated with the battery thermal management system. To assess the performance of the proposed system over the entire lifetime of the battery pack, for both flight and ground operations, a coupled electrothermal-aging model based on semi-empirical data was created and validated experimentally for a notional touch-and-go training mission of a conceptual electric Cessna 172N. Resulting time-dependent performance diagrams presenting the evolution of maximum battery temperature, the ground turnaround time, and the capacity fade are used to determine operational constraints throughout the 2-year-and-a-half lifetime of the pack.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".