Design Methodology for a Pulse Detonation Engine as a Ramjet Replacement
Why this work is in the frame
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Bibliographic record
Abstract
An idealized pulse detonation engine (PDE) based on a realistic system concept is defined for which propulsive performance is significantly greater than that of a ramjet over a large range of Mach numbers. An analytical model of the system is developed that calculates physical, timing and flow parameters that can be used as input to multi -dimensional computational fluid dynamics (CFD) analyses and provide a starting point for real system design. A parametric study of the influence on propulsive performance of flight Mach number, inlet pressure recovery, l ength of the detonation tube, mass flow rate of air through the engine, percentage purge and the tube filling strategy is performed with an analytical model and a one -dimensional code based on the method of characteristics. Finally, in a sample engine des ign exercise a PDE based system is specified for which propulsive performance for steady flight is significantly greater than that of a ramjet .
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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 it