NASA Technical Reports Server NTRS 20160000774: UAS Air Traffic Controller Acceptability Study. 2; Evaluating Detect and Avoid Technology and Communication Delays in SimulationReport as inadecuate



 NASA Technical Reports Server NTRS 20160000774: UAS Air Traffic Controller Acceptability Study. 2; Evaluating Detect and Avoid Technology and Communication Delays in Simulation


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Download or read this book online for free in PDF: NASA Technical Reports Server NTRS 20160000774: UAS Air Traffic Controller Acceptability Study. 2; Evaluating Detect and Avoid Technology and Communication Delays in Simulation
This study evaluated the effects of communications delays and winds on air traffic controller ratings of acceptability of horizontal miss distances HMDs for encounters between Unmanned Aircraft Systems UAS and manned aircraft in a simulation of the Dallas-Ft. Worth DFW airspace. Fourteen encounters per hour were staged in the presence of moderate background traffic. Seven recently retired controllers with experience at DFW served as subjects. Guidance provided to the UAS pilots for maintaining a given HMD was provided by information from Detect and Avoid DAA self-separation algorithms Stratway+ displayed on the Multi-Aircraft Control System. This guidance consisted of amber -bands- on the heading scale of the UAS navigation display indicating headings that would result in a loss of well clear between the UAS and nearby traffic. Winds tested were successfully handled by the DAA algorithms and did not affect the controller acceptability ratings of the HMDs. Voice communications delays for the UAS were also tested and included one-way delay times of 0, 400, 1200, and 1800 msec. For longer communications delays, there were changes in strategy and communications flow that were observed and reported by the controllers. The aim of this work is to provide useful information for guiding future rules and regulations applicable to flying UAS in the NAS. Information from this study will also be of value to the Radio Technical Commission for Aeronautics RTCA Special Committee 228 - Minimum Performance Standards for UAS.



Author: NASA Technical Reports Server (NTRS)

Source: https://archive.org/







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