Thermal Environment Provided by a High-Altitude Balloon Payload Shielded from Terrestrial Radiation
Bibliographic record
Abstract
The thermal environment provided by a high-altitude balloon payload that is shielded from the thermal radiation emitted by the earth is investigated. If launched at night and to a sufficient altitude wherein radiative heat transfer determines the payload thermal environment, such a shielded payload may reach radiative equilibrium with the effective sky temperature in the nighttime stratosphere. Then, in principle, extremely low temperatures may be achieved. The objective is to analyze the feasibility of using High-Altitude Balloons for spacecraft systems testing in low pressure and low temperature environments. In this study, a heat transfer model was developed to study the thermal environment of a balloon-borne radiation shield in the stratosphere. Also, theoretical models of balloon ascent rate were developed to define optimal launch parameters. Three flight predictors were used to narrow the possible landing locations and improve the probability of successful recovery. Five experimental payloads were flown to the stratosphere and successfully recovered for data analysis. The obtained flight results appear to indicate that the expected trend of radiation cooling is observed.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".