Traffic Aware Strategic Aircrew Requests (TASAR)

Ballin, Mark G.; Wing, David J.

doi:10.2514/6.2012-5623

Cited by 31 publications

(24 citation statements)

References 3 publications

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“…NASA has extensive research experience developing and evaluating tools that continuously search for opportunities to improve the efficiency of trajectories around weather, including the airborne tool Traffic Aware Strategic Aircrew Requests (TASAR) 14 , the FOC tool Dynamic Weather Routes (DWR) 15 , and the ANSP tool Dynamic Arrival Routes (DAR) 16 . From experience gained from operational assessments of DWR, it is clear that predictions made more than two hours out of airways and arrival routes that will be impacted by severe weather at the time a flight would use them are highly uncertain; and there are noticeable uncertainties even 30 minutes out.…”

Section: The Effects Of Weather On the Nasmentioning

confidence: 99%

NextGen Far-Term Concept Exploration for Integrated Gate-to-Gate Trajectory-Based Operations

Johnson¹,

Barmore

2016

16th AIAA Aviation Technology, Integration, and Operations Conference

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NASA is currently conducting concept exploration studies toward the definition of a far-term, gate-to-gate concept for Trajectory-Based Operations (TBO). This paper presents a basic architectural framework for the far-term concept and discusses some observations about implementation of trajectory-based operations in the National Airspace System. Within the concept, operators and service providers collaboratively negotiate aircraft trajectories, providing agile, optimized, aircraft-specific routing to meet service provider gate-to-gate flow-management constraints and increasing capacity by smoothly and effectively combining flight-deck-based and ground-based metering, merging, and spacing in a mixed-equipage environment. The far-term TBO concept is intended to influence the direction of mid-term TBO research and to inform the definition of stable requirements and standards for TBO communications infrastructure and user equipage.

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Section: The Effects Of Weather On the Nasmentioning

confidence: 99%

NextGen Far-Term Concept Exploration for Integrated Gate-to-Gate Trajectory-Based Operations

Johnson¹,

Barmore

2016

16th AIAA Aviation Technology, Integration, and Operations Conference

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“…Ref. 9 presents the concept of Traffic Aware Strategic Aircrew Requests (TASAR), which combines Automatic Dependent Surveillance-Broadcast (ADS-B) and airborne automation to enable user-optimal in-flight trajectory re-planning and to increase the likelihood of ATC approval for the resulting trajectory change request, incorporating traffic, weather, and airspace information in the optimization process. The main difference between DWR and other automation for weather avoidance is that DWR route advisories are triggered by detected opportunities for more efficient time saving routes around weather.…”

Section: Introductionmentioning

confidence: 99%

Improving Operational Acceptability of Dynamic Weather Routes Through Analysis of Commonly Use Routings

Evans

Sridhar

McNally

2016

16th AIAA Aviation Technology, Integration, and Operations Conference

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The Dynamic Weather Routes (DWR) tool is a ground-based trajectory automation system that continuously and automatically analyzes active in-flight aircraft in en route airspace to find simple modifications to flight plan routes that can save significant flying time, while avoiding weather and considering traffic conflicts, airspace sector congestion, special use airspace, and FAA routing restrictions. Trials of the DWR system have shown that significant delay savings are possible. However, some DWR advised routes are also rejected by dispatchers or modified before being accepted. Similarly, of those sent by dispatchers to flight crews as proposed route change requests, many are not accepted by air traffic control, or are modified before implementation as Center route amendments. Such actions suggest that the operational acceptability of DWR advised route corrections could be improved, which may reduce workload and increase delay savings. This paper analyzes the historical usage of different flight routings, varying from simple waypoint pairs to lengthy strings of waypoints incorporating jet routes, in order to improve DWR route acceptability. An approach is developed that can be incorporated into DWR, advising routings with high historical usage and savings potential similar to that of the nominal DWR advisory. It is hypothesized that modifying a nominal DWR routing to one that is commonly used, and nearby, will result in more actual savings since common routings are generally familiar and operationally acceptable to air traffic control. The approach allows routing segments with high historical usage to be concatenated to form routes that meet all DWR constraints. The relevance of a route's historical usage to its acceptance by dispatchers and air traffic control is quantified by analyzing historical DWR data. Results indicate that while historical usage may be less of a concern to flight dispatchers accepting or rejecting DWR advised route corrections, it may be important to air traffic control acceptance of DWR routes.

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“…By providing pilots conflict-free route and altitude optimizations that save fuel and/or flight time, TASAR enables them to make money-saving, routechange requests that are more likely to be approved by Air Traffic Control (ATC). 1 Adoption of the TASAR concept is possible in current-day operations because of the increasing availability of three technologies in the cockpit: the avionics-connected Electronic Flight Bag (EFB), Automatic Dependent Surveillance Broadcast (ADS-B) IN, and broadband internet connectivity. By advancing the aircraft's roll from passive recipient of ATC instructions to active trajectory planner, TASAR is an early initiative promoting greater operational autonomy in the National Airspace System (NAS), 2,3 a strategic goal of NASA's Aeronautics Research Mission Directorate.…”

Section: Introductionmentioning

confidence: 99%

Traffic Aware Planner for Cockpit-based Trajectory Optimization

Woods

Vivona²,

Henderson

et al. 2016

16th AIAA Aviation Technology, Integration, and Operations Conference

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The Traffic Aware Planner (TAP) software application is a cockpit-based advisory tool designed to be hosted on an Electronic Flight Bag and to enable and test the NASA concept of Traffic Aware Strategic Aircrew Requests (TASAR). The TASAR concept provides pilots with optimized route changes (including altitude) that reduce fuel burn and/or flight time, avoid interactions with known traffic, weather and restricted airspace, and may be used by the pilots to request a route and/or altitude change from Air Traffic Control. Developed using an iterative process, TAP's latest improvements include human-machine interface design upgrades and added functionality based on the results of human-in-the-loop simulation experiments and flight trials. Architectural improvements have been implemented to prepare the system for operational-use trials with partner commercial airlines. Future iterations will enhance coordination with airline dispatch and add functionality to improve the acceptability of TAP-generated route-change requests to pilots, dispatchers, and air traffic controllers.

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Traffic Aware Strategic Aircrew Requests (TASAR)

Cited by 31 publications

References 3 publications

NextGen Far-Term Concept Exploration for Integrated Gate-to-Gate Trajectory-Based Operations

NextGen Far-Term Concept Exploration for Integrated Gate-to-Gate Trajectory-Based Operations

Improving Operational Acceptability of Dynamic Weather Routes Through Analysis of Commonly Use Routings

Traffic Aware Planner for Cockpit-based Trajectory Optimization

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