Airfield Performance Evaluation of an Advanced Propeller on the C-130H
Bibliographic record
Abstract
The NP2000 is an advanced, eight-blade propeller with a more modern aerodynamic design than the four-blade 54H60 propeller currently used on the C-130H. Flight tests performed on a U.S. Air Force C-130H with NP2000 propellers installed in place of the original fourblade propellers were conducted using modern flight-test instrumentation and techniques to determine the effect of the new propellers on aircraft performance. The testing demonstrated greater net thrust at equivalent power settings. The increase in takeoff thrust resulted in greater low-speed acceleration and reduced four-engine takeoff distances. The new propellers exhibited different power transition characteristics and increased residual thrust at low power settings. Furthermore, the altered propeller slipstream effects changed the lift and drag characteristics of the airplane. The flight test results also revealed that greater takeoff thrust caused corresponding increases in minimum control speeds which negatively impacted critical field length in some cases. Landing speeds and distances were adversely affected by increased residual thrust at low power settings. The cumulative effect of the changes to airfield performance required a comprehensive update to the C-130H performance model.
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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 | 0.001 | 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) | 0.001 | 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 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".