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Kevin W Williams – One of the best experts on this subject based on the ideXlab platform.

  • An Investigation of Sensory Information, Levels of Automation, and Piloting Experience on Unmanned Aircraft Pilot Performance
    , 2012
    Co-Authors: Kevin W Williams

    Abstract:

    Abstract : The current experiment was intended to examine the effect of sensory information on Pilot reactions to system failures within a UAS control station simulation. This research also investigated the level of automation used in controlling the Aircraft and the level of manned flight experience of the participants, since these also have been shown to influence Pilot effectiveness. While the presence of sound did improve responses to engine failures, it did not improve responses to failures in heading control. The prediction that higher levels of automation would lead to complacency or vigilance decrements was not supported. The finding that Pilots, in the manual conditions, flew significantly closer to the flight path than non-Pilots was unexpected. The results suggest differences between those with manned Aircraft experience and those without, but it is unclear whether these differences are due to manned Aircraft training and flight experience or whether other factors, such as personality, may be evident.

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  • Documentation of Sensory Information in the Operation of Unmanned Aircraft Systems
    , 2008
    Co-Authors: Kevin W Williams

    Abstract:

    Abstract : For manned Aircraft, the presence of multi-sensory inputs is a given. Pilots of manned Aircraft might not even be aware of the availability of several different types of sensory inputs occurring at the same time. However, it is likely that each type of input has a reinforcing effect on the others that allows for a rapid diagnosis and response of both normal and unusual events in the cockpit. The situation for the Pilot of an Unmanned Aircraft System (UAS) is much different. UAS Pilots receive information regarding the state and health of their Aircraft solely through electronic displays. This report includes a comparison of manned sensory information to sensory information available to the unmanned Aircraft Pilot, a review of remediations for sensory deficiencies from the current UAS inventory, a review of human factors research related to enhancing sensory information available to the UAS Pilot, and a review of current FAA regulations related to sensory information requirements. Analyses demonstrated that UAS Pilots receive less and fewer types of sensory information, compared with manned Aircraft Pilots. One consequence is the enhanced difficulty for UAS Pilots to recognize and diagnose anomalous flight events that could endanger the safety of the flight. Recommendations include the incorporation of multi- sensory alert and warning systems into UAS control stations.

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  • Unmanned Aircraft Pilot Medical Certification Requirements
    , 2007
    Co-Authors: Kevin W Williams

    Abstract:

    Abstract : This research addressed the medical requirements necessary for unmanned Aircraft (UA) Pilots for successful flight in the National Airspace System (NAS). Given that an existing medical certification was recommended, the question of which class of certification to propose was based on the perceived level of risk imposed by the potential incapacitation of the UA Pilot. A second-class medical certification was judged to be the most acceptable, considering that there were several factors that mitigated the risk of Pilot incapacitation relative to those of manned Aircraft. First, factors related to changes in air pressure could be ignored, assuming that control stations for non-military operations would be on the ground. Second, many of the current UA systems have procedures that have been established for lost data link. Lost data link, where the Pilot cannot transmit commands to the Aircraft, is functionally equivalent to Pilot incapacitation. Third, the level of automation of a system determines the criticality of Pilot incapacitation because some highly automated systems (e.g., Global Hawk) will continue normal flight whether a Pilot is or is not present. The effort consisted of the convening of a panel of subject matter experts and interactions with groups engaged in the process of establishing unmanned Aircraft Pilot guidelines. The results of this effort were a recommendation and justification for the use of the second-class medical certification.

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Ronald A. Hess – One of the best experts on this subject based on the ideXlab platform.

  • assessing Aircraft susceptibility to nonlinear Aircraft Pilot coupling Pilot induced oscillations
    Journal of Guidance Control and Dynamics, 1998
    Co-Authors: Ronald A. Hess, Perry W. Stout

    Abstract:

    A unie ed approach for assessing Aircraft susceptibility to AircraftPilot coupling (or Pilot-induced oscillations ) that was previously reported in the literature and applied to linear systems is extended to nonlinear systems, with emphasis upon vehicles with actuator rate saturation. The linear methodology provided a tool for predicting 1 ) handling qualities levels, 2 ) Pilot-induced oscillation rating levels, and 3 ) a frequency range in which Pilot-induced oscillationsarelikely to occur. The extension to nonlinear systems providesa methodology forpredicting the latter two quantities.

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  • Assessing Aircraft Susceptibility to Nonlinear AircraftPilot Coupling/Pilot-Induced Oscillations
    Journal of Guidance Control and Dynamics, 1998
    Co-Authors: Ronald A. Hess, Perry W. Stout

    Abstract:

    A unie ed approach for assessing Aircraft susceptibility to AircraftPilot coupling (or Pilot-induced oscillations ) that was previously reported in the literature and applied to linear systems is extended to nonlinear systems, with emphasis upon vehicles with actuator rate saturation. The linear methodology provided a tool for predicting 1 ) handling qualities levels, 2 ) Pilot-induced oscillation rating levels, and 3 ) a frequency range in which Pilot-induced oscillationsarelikely to occur. The extension to nonlinear systems providesa methodology forpredicting the latter two quantities.

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  • Unified Theory for Aircraft Handling Qualities and Adverse AircraftPilot Coupling
    Journal of Guidance Control and Dynamics, 1997
    Co-Authors: Ronald A. Hess

    Abstract:

    A unie ed theory for Aircraft handling qualities and adverse AircraftPilot coupling or Pilot-induced oscillations is introduced. The theory is based on a structural model of the human Pilot. A methodology is presented for the prediction of 1 ) handling qualities levels, 2 ) Pilot-induced oscillation rating levels, and 3 ) a frequency range in which Pilot-induced oscillations are likely to occur. Although the dynamics of the force-feel system of the cockpit inceptor is included, the methodology will not account for effects attributable to control sensitivity and is limited to single-axis tasks and, at present, to linear vehicle models. The theory is derived from the feedback topology of the structural model and an examination of e ight test results for 32 Aircraft cone gurations simulated by the U.S. Air Force/CALSPAN NT-33A and Total In-Flight Simulator variable stability Aircraft. An extension to nonlinear vehicle dynamics such as that encountered with actuator saturation is discussed.

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Perry W. Stout – One of the best experts on this subject based on the ideXlab platform.

  • assessing Aircraft susceptibility to nonlinear Aircraft Pilot coupling Pilot induced oscillations
    Journal of Guidance Control and Dynamics, 1998
    Co-Authors: Ronald A. Hess, Perry W. Stout

    Abstract:

    A unie ed approach for assessing Aircraft susceptibility to AircraftPilot coupling (or Pilot-induced oscillations ) that was previously reported in the literature and applied to linear systems is extended to nonlinear systems, with emphasis upon vehicles with actuator rate saturation. The linear methodology provided a tool for predicting 1 ) handling qualities levels, 2 ) Pilot-induced oscillation rating levels, and 3 ) a frequency range in which Pilot-induced oscillationsarelikely to occur. The extension to nonlinear systems providesa methodology forpredicting the latter two quantities.

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  • Assessing Aircraft Susceptibility to Nonlinear AircraftPilot Coupling/Pilot-Induced Oscillations
    Journal of Guidance Control and Dynamics, 1998
    Co-Authors: Ronald A. Hess, Perry W. Stout

    Abstract:

    A unie ed approach for assessing Aircraft susceptibility to AircraftPilot coupling (or Pilot-induced oscillations ) that was previously reported in the literature and applied to linear systems is extended to nonlinear systems, with emphasis upon vehicles with actuator rate saturation. The linear methodology provided a tool for predicting 1 ) handling qualities levels, 2 ) Pilot-induced oscillation rating levels, and 3 ) a frequency range in which Pilot-induced oscillationsarelikely to occur. The extension to nonlinear systems providesa methodology forpredicting the latter two quantities.

    Free Register to Access Article