36,025 research outputs found

    Computerized polar plots by a cathode ray tube/grid overlay method

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    Overlay is aligned with four calibration dots so it is not affected by CRT drift or changes in vertical or horizontal gain when producing Nyquist /frequency-response phase/amplitude/ plots. Method produces over 50 plots per hour

    Project for the analysis of technology transfer Quarterly report, 1 Apr. 1970 - 30 Jun. 1970

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    Operations summary for NASA technology transfer progra

    Project for the analysis of technology transfer

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    The special task of preparing technology transfer profiles during the first six months of 1971 produced two major results: refining a new method for identifying and describing technology transfer activities, and generating practical insights into a number of issues associated with transfer programs

    Project for the analysis of technology transfer Quarterly reports, 1 Jul. - 31 Dec. 1970

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    Summary of research activities of Project for Analysis of Technology Transfer for period 1 July - 31 Dec. 197

    The NASA role in major areas of human concern: Health care

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    Benefits derived from the civilian aeronautics and space effort are discussed in a statement whose focus is on the developments in health care which can be traced to specific NASA program elements. A summary is provided for each case where NASA has been involved in expanding the biomedical technical base, as well as where NASA has been directly instrumental in providing solutions in maintaining adequate health, and correcting health problems when they occur

    Aerodynamic characteristics of a powered tilt-proprotor wind tunnel model

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    An investigation was conducted in the Langley V/STOL tunnel to determine the performance, stability and control, and rotor-wake interaction effects of a powered tilt-proprotor aircraft model with gimbal-hub rotors. Tests were conducted at representative flight conditions for hover, helicopter, transition, and airplane flight. Force and moment data were obtained for the complete model and for each of the two rotors. In addition to wind-speed variation, the angle of attack, angle of sideslip, rotor speed, rotor collective pitch, longitudinal cyclic pitch, rotor pylon angle, and configuration geometry were varied. The results, presented in graphical form, are available in tabular form to facilitate the validation of analytical methods of defining the aerodynamic characteristics of tilt-proprotor configurations
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