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Record W2326765874 · doi:10.2514/6.2012-3218

Optimum Signature Shaping for Low Sonic Boom

2012· article· en· W2326765874 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venue30th AIAA Applied Aerodynamics Conference · 2012
Typearticle
Languageen
FieldEnvironmental Science
TopicWind and Air Flow Studies
Canadian institutionsLockheed Martin (Canada)
FundersPennsylvania State UniversityNational Aeronautics and Space Administration
KeywordsSonic boomSignature (topology)LoudnessMinificationBoomRoundingShock (circulatory)Computer scienceMathematical optimizationMathematicsMechanicsEngineeringPhysicsGeometryComputer vision

Abstract

fetched live from OpenAlex

The reference 1 “Sonic Boom Minimization” theory determined three signature shapes for minimizing the impact of sonic boom. These shapes are improved upon through more recent analytical findings, improved loudness calculation and more shape variations—explored in an optimization framework. Final shapes all achieve nearly an 8 PLdB improvement over a SEEB minimum shock signature. After the optimization, a higher fidelity Burgers-type rounding analysis was run on the primary shape parameter, indicating the improvement may halve to 4 PLdB. Further shape improvement is possible and is planned to be combined with Burger-type analysis in the future.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.395
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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.

Opus teacher head0.018
GPT teacher head0.229
Teacher spread0.211 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it