Fluid-Structure Inflation Simulations of a Parachute With High-Speed Dynamic Reefing
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 inflation of a round canopy equipped with a dynamic reefing mechanism consisting of a sombrero-like flexible structure (the slider) that is allowed to move along the suspension lines is investigated computationally. The Butler Parachute Systems high-speed parachute HX series is used as the model. Fluid-structure interaction simulations at low Mach numbers are employed to study inflation and post-inflation dynamics. This study focuses on the initial inflation and dynamics as the slider travels from its initial deployment location down along the suspension lines. An immersed-boundary method for compressible viscous flow and fluid-structure interaction algorithm is used in these simulations. The computational fluid dynamics uses structured adaptive mesh refinement and large-eddy simulation for computational efficiency of this high-Reynolds number flow. We will discuss drag evolution during inflation and post-inflation stages, suspension line loads, and selected validation with available experimental data. Furthermore, we will compare the performance of the system with and without a slider.
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