Preliminary Design of a Solar-Powered Hybrid Airship
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The feasibility of a solar-powered hybrid airship where lift is generated by both buoyancy and aerodynamics is investigated using aerodynamic shape optimization. The design objective is to minimize the product of envelope root chord and span (which corresponds to the size of the hangar required to house the airship), subject to constraints on the lift, the ratio of solar power produced to power consumed, the airship operational empty weight, the trim, and the static margin. Simple mass models are used to estimate the mass of airship components, including the solar array, drive train components, and envelope fabric. The optimizer has the freedom to vary the envelope section shapes, span, twist, angle of attack, and flap angle. A three-point optimization has produced a feasible envelope geometry that satisfies the design requirements at two cruise-speed operating conditions (each with a center-of-gravity location at either extreme of the design range) and one low-speed operating condition. The results indicate that such an aircraft, which could be well suited to operations in remote areas, is feasible with respect to aerodynamic efficiency. Sensitivity studies indicate that faster hybrid airships will become feasible with future improvements in solar panel irradiance.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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