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Detect-and-Avoid Maneuver Planning: Benefits of Including Route Recapture  (2021)
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Development of Detect-and-avoid (DAA) systems' maneuver guidance requirements at RTCA has centered on tactical maneuvers away from the intruder. Recapturing the flight-plan route the initial maneuver is not directly taken into account by most DAA maneuver guidance algorithms. This work demonstrates potential challenges and inefficiencies that can arise in recapturing the route after resolving a conflict. Horizontal resolution trajectories for a test matrix of encounters with varying aircraft speeds and geometries are computed by minimizing either flight time or deviation to serve as a baseline. Turn directions computed from a reference DAAalgorithm coupled with a pilot selectionmodel and a second algorithm calledAutoresolver (AR) are compared to these baseline resolution trajectories. Baseline results show that turning into the intruder yields favorable cost for most encounters. Additional analysis of pilot response data shows that only three-fourths of pilots horizontal maneuvers turn into intruders, a percentage much lower than the baseline results. Improvement to a DAA guidance algorithm based on findings in this work is discussed.
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DAA, Detect-and-Avoid, Maneuver, Planning, Recapture, Route
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In AIAA Scitech 2021 Forum (p. 0451)
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Adobe PDF Icon  RouteRecapture.pdf (Download Acrobat Reader Click to download Adobe Acrabat Reader)
  (381KB) (application/pdf)
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Curator: Phil So
NASA Official: Alonso Vera
Last Updated: August 15, 2019