Flight Test Evaluation and Aerodynamic Performance Modeling of a C-130H with an Advanced Propeller
Bibliographic record
Abstract
The NP2000 is an advanced, eight-blade propeller with an aerodynamic design similar to the six-blade propeller on the new C-130J. Flight tests performed on a U.S. Air Force C-130H with NP2000 propellers installed in place of the original four-blade propellers determined the effect of the new propellers on aircraft performance. The testing demonstrated greater net thrust at equivalent power settings. The flight test results also revealed that the changes in aircraft performance could not be modeled coherently using the legacy aerodynamic model, even though consistent thrust-drag bookkeeping was employed. For an aircraft such as the C-130 with strong interactions between the propeller slipstream and airframe, changes to the thrust strongly affect the lift and drag characteristics of the aircraft. The development of these characteristics, using modern flight-test instrumentation and analysis methods, is described. The process resulted in a unique drag model suitable to modeling the airborne performance of the C-130H with NP2000 propellers.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| 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 | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), 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".