Supersonic Unsteady Flow Around a Capsule-Shaped Abort System with Angle of Attack
Bibliographic record
Abstract
Supersonic flow over a capsule-shaped abort system with angle of attack (AoA) of �, which is boosted by supersonic aerodynamic interference, is investigated numerically through the 3D simulation. The objective of this study is to examine the effects of AoA on aerodynamic stability. In the previous study, the flowfield around this system at � = 0 � is unsteady and has a strong periodic flow oscillation in the case without the clearance between the capsule and rocket. In the present study, this system has the angle of attack and a disk is installed to enhance the abort separation. The self-sustaining flow oscillation in the case with AoA is described and is visualized using the phase-averaged analysis of simulated results. With increasing AoA, the oscillating flow is divided into two parts, which correspond to the lower and upper surfaces of the cone. These two flows have a phase difference which becomes larger with increasing AoA. The present findings show it is about 0.28� and 0.4�, respectively. At the same time, the lower flow oscillation is out of step with the upper one, and an inharmonic flow oscillation occurs because of strong aerodynamic interaction in the lower flow. This unstable flow will lead to a risky abort separation and this phenomenon is analyzed in detail in this paper.
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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".