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  • 1
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    Aiding Vertical Guidance Understanding (1998)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A two-part study was conducted to evaluate modern flight deck automation and interfaces. In the first part, a survey was performed to validate the existence of automation surprises with current pilots. Results indicated that pilots were often surprised by the behavior of the automation. There were several surprises that were reported more frequently than others. An experimental study was then performed to evaluate (1) the reduction of automation surprises through training specifically for the vertical guidance logic, and (2) a new display that describes the flight guidance in terms of aircraft behaviors instead of control modes. The study was performed in a simulator that was used to run a complete flight with actual airline pilots. Three groups were used to evaluate the guidance display and training. In the training, condition, participants went through a training program for vertical guidance before flying the simulation. In the display condition, participants ran through the same training program and then flew the experimental scenario with the new Guidance-Flight Mode Annunciator (G-FMA). Results showed improved pilot performance when given training specifically for the vertical guidance logic and greater improvements when given the training and the new G-FMA. Using actual behavior of the avionics to design pilot training and FMA is feasible, and when the automated vertical guidance mode of the Flight Management System is engaged, the display of the guidance mode and targets yields improved pilot performance.
    Keywords: Aircraft Instrumentation
    Type: NASA/TM-1998-112217 , A-98-09160 , NAS 1.15:112217
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Evaluating Models of Human Performance: Safety-Critical Systems Applications (2012)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This presentation is part of panel discussion on Evaluating Models of Human Performance. The purpose of this panel is to discuss the increasing use of models in the world today and specifically focus on how to describe and evaluate models of human performance. My presentation will focus on discussions of generating distributions of performance, and the evaluation of different strategies for humans performing tasks with mixed initiative (Human-Automation) systems. I will also discuss issues with how to provide Human Performance modeling data to support decisions on acceptability and tradeoffs in the design of safety critical systems. I will conclude with challenges for the future.
    Keywords: Aircraft Design, Testing and Performance
    Type: ARC-E-DAA-TN6352 , 56th Annual Meeting of the Human Factors and Ergonomics Society; Oct 22, 2012 - Oct 26, 2012; Boston, MA; United States
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 3
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    Cognitive Systems Engineering: The Next 30 Years (2012)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This presentation is part of panel discussion on Cognitive Systems Engineering. The purpose of this panel is to discuss the challenges and future directions of Cognitive Systems Engineering for the next 30 years. I intended to present the work we have been doing with the Aviation Safety program and Space Human Factors Engineering project on Work Domain Analysis and some areas of Research Focus. Specifically, I intend to focus on the shift on the need to understand and model attention in mixed-initiative systems, the need for methods which can generate results to be used in trade-off decisions, and the need to account for a range of human behavior in the design.
    Keywords: Aircraft Design, Testing and Performance
    Type: ARC-E-DAA-TN6354 , 56th Annual Meeting of the Human Factors and Ergonomics Society; Oct 22, 2012 - Oct 26, 2012; Boston, MA; United States
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 4
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    Automated Test Case Generation for an Autopilot Requirement Prototype (2011)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Designing safety-critical automation with robust human interaction is a difficult task that is susceptible to a number of known Human-Automation Interaction (HAI) vulnerabilities. It is therefore essential to develop automated tools that provide support both in the design and rapid evaluation of such automation. The Automation Design and Evaluation Prototyping Toolset (ADEPT) enables the rapid development of an executable specification for automation behavior and user interaction. ADEPT supports a number of analysis capabilities, thus enabling the detection of HAI vulnerabilities early in the design process, when modifications are less costly. In this paper, we advocate the introduction of a new capability to model-based prototyping tools such as ADEPT. The new capability is based on symbolic execution that allows us to automatically generate quality test suites based on the system design. Symbolic execution is used to generate both user input and test oracles user input drives the testing of the system implementation, and test oracles ensure that the system behaves as designed. We present early results in the context of a component in the Autopilot system modeled in ADEPT, and discuss the challenges of test case generation in the HAI domain.
    Keywords: Aircraft Design, Testing and Performance
    Type: ARC-E-DAA-TN4293 , 2011 IEEE Conference on Systems, Man and Cybernetics; Oct 09, 2011 - Oct 12, 2011; Anchorage, AK
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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