Limited flight tests of a prototype aircraft were conducted at 3 test facilities at various altitudes. Testing concentrated on hover and level flight performance, controllability, and low-speed flight characteristics at heavy gross weight, high density altitude test conditions. The YAH-1S represents a significant improvement over the AH-1G/Q helicopter by virtue of its increased useful load-carrying capability, directional controllability and control margin, and hover performance capability. The control system characteristics of the YAH-1S failed to meet several requirements of applicable paragraphs of military specification MIL-H-8501A and the approved BHC deviations to MIL-H-8501A against which they were tested, but were still considered satisfactory. One shortcoming was noted.


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    Title :

    Airworthiness and Flight Characteristics Evaluation. YAH-1S Improved Cobra Agility and Maneuverability Helicopter


    Contributors:
    G. L. Skinner (author) / W. Y. Abbott (author) / R. C. Tarr (author)

    Publication date :

    1975


    Size :

    102 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






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