The Model 107-II Helicopter: 50 Years of Tandem-Rotor Excellence
Bibliographic record
Abstract
In 1956, the Vertol Aircraft Corporation began work on a new turbine-powered tandem-rotor helicopter design. First flight of the Model 107 prototype took place on April 22, 1958, and in 1962, the upgraded Model 107-II was FAA certified for passenger use. New York Airways (NYA) first began use of these aircraft in July of 1962, flying commuting passengers between the New York City airports and various downtown Manhattan locations. The development of the Model 107-II continued into various military versions including the famous US Marine Corps CH-46, Swedish HKP-4, and Canadian CH-113. In addition, the design was licensed to the Japanese firm Kawasaki who would go on to produce over 100 of their own assortment of Model 107-IIs. Even though these helicopters are just over 50 years of age, improvements are constantly being incorporated into the design. Recently, the takeoff, landing, and maximum velocity performance were expanded for the Vertol. Other upgrades include state-of-the-art Health and Usage Monitoring Systems (HUMS), utility seat interiors, and glass cockpits. In addition, Columbia as acquired the Swedish HKP-4 and Canadian CH-113's with plans to convert these into commercial Model 107-IIs operate them for many more decades.
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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 | 0.000 | 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 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".