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  • 1
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    A comparison of landing maneuver piloting technique based on measurements made in an airline training simulator and in actual flight (1981)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: An emphasis is placed on developing a mathematical model in order to identify useful metrics, quantify piloting technique, and define simulator fidelity. On the basis of DC-10 flight measurements recorded for 32 pilots, 13 flight-trained and the remainder simulator trained, a revised model of the landing flare is hypothesized which accounts for reduction of sink rate and perference for touchdown point along the runway. The flare maneuver and touchdown point adjustment can be described by a pitch attitude command pilot guidance law consisting of altitude and vertical velocity feedbacks. In flight pilots exhibit a significant vertical velocity feedback which is essential for well controlled sink rate reduction at the desired level of response (bandwidth). In the simulator, however, the vertical velocity feedback appears ineffectual and leads to substantially inferior landing performance.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: JPL Proc. of the 17th Ann. Conf. on Manual Control; p 223-234
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    The analysis of delays in simulator digital computing systems. Volume 1: Formulation of an analysis approach using a central example simulator model (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The effects of spurious delays in real time digital computing systems are examined. Various sources of spurious delays are defined and analyzed using an extant simulator system as an example. A specific analysis procedure is set forth and four cases are viewed in terms of their time and frequency domain characteristics. Numerical solutions are obtained for three single rate one- and two-computer examples, and the analysis problem is formulated for a two-rate, two-computer example.
    Keywords: COMPUTER OPERATIONS AND HARDWARE
    Type: NASA-CR-152340 , STI-TR-1140-1-VOL-1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Functional requirements for the man-vehicle systems research facility (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The NASA Ames Research Center proposed a man-vehicle systems research facility to support flight simulation studies which are needed for identifying and correcting the sources of human error associated with current and future air carrier operations. The organization of research facility is reviewed and functional requirements and related priorities for the facility are recommended based on a review of potentially critical operational scenarios. Requirements are included for the experimenter's simulation control and data acquisition functions, as well as for the visual field, motion, sound, computation, crew station, and intercommunications subsystems. The related issues of functional fidelity and level of simulation are addressed, and specific criteria for quantitative assessment of various aspects of fidelity are offered. Recommendations for facility integration, checkout, and staffing are included.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-CR-166315 , NAS 1.26:166315 , TR-1156-3
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    An analysis of airline landing flare data based on flight and training simulator measurements (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Landings by experienced airline pilots transitioning to the DC-10, performed in flight and on a simulator, were analyzed and compared using a pilot-in-the-loop model of the landing maneuver. By solving for the effective feedback gains and pilot compensation which described landing technique, it was possible to discern fundamental differences in pilot behavior between the actual aircraft and the simulator. These differences were then used to infer simulator fidelity in terms of specific deficiencies and to quantify the effectiveness of training on the simulator as compared to training in flight. While training on the simulator, pilots exhibited larger effective lag in commanding the flare. The inability to compensate adequately for this lag was associated with hard or inconsistent landings. To some degree this deficiency was carried into flight, thus resulting in a slightly different and inferior landing technique than exhibited by pilots trained exclusively on the actual aircraft.
    Keywords: AIRCRAFT STABILITY AND CONTROL
    Type: NASA-CR-166404 , NAS 1.26:166404 , STI-TR-1172-1R-REV
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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