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HIGHLIGHTS ARCHIVE
Dynamic Routes for Arrivals in Weather (DRAW) Human-in-the-Loop Simulation #4 Completed
December 20, 2018

Operator station showing DRAW tools during the fourth human-in-the-loop simulation.

The fourth in a series of planned Human-in-the-Loop (HITL) studies of the Dynamic Routes for Arrivals in Weather (DRAW) tool was conducted October 22-November 2 at NASA Ames Research Center's Air Traffic Control (ATC) simulation laboratory. The purpose of this simulation was to evaluate arrival metering and weather impact mitigation benefits for Atlanta En Route Center (ZTL) arrivals, to assess the effects of different schedule freeze horizon distances on DRAW performance, and to evaluate DRAW reroute coordination with expanded (relative to HITL #3) operations into Jacksonville En Route Center (ZJX) airspace. Study participants included four recently-retired Traffic Management Coordinators (TMCs) (two each from ZTL and ZJX) and seven recently-retired Sector Controllers (two from ZTL, one from ZJX and four from Oakland Center). A pair of TMCs (one from ZTL, one from ZJX) participated as a team each week of the study, with the ZTL TMC participating as the primary DRAW user and the ZJX TMC providing consultation for reroutes impacting ZJX airspace and operations. Each TMC team evaluated two weather-impacted arrival traffic scenarios at two schedule freeze horizon distances, and both with and without DRAW functionality, across 16 total runs. The DRAW functions included TMC reroute advisories and schedule impact/delay information. TMCs used the DRAW trial planning capability to evaluate candidate reroutes for weather avoidance, assess their schedule delay impact, coordinated reroutes with sector controllers when required, and amend flight routes as necessary to maintain effective arrival metering. The inclusion of ZJX personnel in HITL #4 allowed researchers to investigate the coordination required for reroutes across Center boundaries. Data collection included questionnaires and DRAW performance data. Researchers gained valuable feedback toward DRAW use in operations that may include extended metering and coupled scheduling. Data analysis is currently underway. (POC: Doug Isaacson)



ATD-2 Presents Phase 3 Concept of Use to the Collaborative Decision Making (CDM) - Flow Evaluation Team
December 20, 2018

Participants of the CDM-FET meeting gathered around a conference table.

NASA briefed the Airspace Technology Demonstration 2 (ATD-2) Phase 3 Concept of Use to the CDM Flow Evaluation Team (FET) on December 6, 2018 in Washington, DC. The NASA team presented a deep-dive into the Phase 3 concept with a story board that featured early mock-ups and data elements that will be used during the departure trajectory option set (TOS) operation. The NASA ATD-2 system will help to identify opportunities for rerouting departures during terminal demand/capacity imbalances. The system includes a user interface to coordinate the use of departure TOS that is shared among field demo partners. New technology in the predictive engine assesses when flights have sufficient surface departure delay to warrant alternative routes, as specified by flight operator's relative trajectory cost (RTC) input. The FET group provided feedback on the concept of use and the data elements, and committed to provide on-going support to NASA's Phase 3 activities. (POC: Eric Chevalley)



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