A Nozzle Concept to Entrain Atmospheric Air for Ejector Operation
Why this work is in the frame
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Bibliographic record
Abstract
The purpose of this paper is to describe a design methodology for a converging-diverging nozzle concept that takes advantage of the ejector effect. Incorporating the ejector effect into the nozzle design may be able to provide a more economical means for space transport as thrust increases so fuel quantity can be reduced. Methodology for the proposed nozzle requires three cross sections to be constrained in the diverging portion of the nozzle. The throat maintains axisymmetry with a choked flow condition. A gate is placed between the throat and outlet on the outer perimeter of the nozzle through which the nozzle geometry must pass; however, the shape is given freedom so that it does not have to remain axisymmetric. In doing so, a cutout can be created for air entrainment as the exhaust flow is restricted to flowing through the gate. Finally, the outlet is set to obtain desired rocket exhaust conditions. Viscous effects are accounted for by implementing Edenfield’s experimental displacement thickness correlation for turbulent boundary layers.
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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