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![Page 1: A Perspective on NASA Ames Air Traffic Management Research Jeffery A. Schroeder Federal Aviation Administration* * Formerly NASA Ames.](https://reader035.fdocuments.net/reader035/viewer/2022062801/56649e625503460f94b5e57b/html5/thumbnails/1.jpg)
A Perspective on NASA Ames Air Traffic Management Research
Jeffery A. SchroederFederal Aviation Administration*
* Formerly NASA Ames
![Page 2: A Perspective on NASA Ames Air Traffic Management Research Jeffery A. Schroeder Federal Aviation Administration* * Formerly NASA Ames.](https://reader035.fdocuments.net/reader035/viewer/2022062801/56649e625503460f94b5e57b/html5/thumbnails/2.jpg)
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![Page 3: A Perspective on NASA Ames Air Traffic Management Research Jeffery A. Schroeder Federal Aviation Administration* * Formerly NASA Ames.](https://reader035.fdocuments.net/reader035/viewer/2022062801/56649e625503460f94b5e57b/html5/thumbnails/3.jpg)
Take-away
• Accurate trajectory prediction sustained key past contributions
• Present research has wide coverage, with separation assurance and traffic flow management being the top two thrusts
• We need to enable more first-look operational evaluations to meet the NextGen objectives
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Plan
• Past key contributions: – Traffic Management Advisor– Continuous descent arrivals in traffic– Direct-To
• Present research: – Separation assurance– Broad sketches of the other research
• Suggested future modifications:– Need more first-look operational evaluations– Need to resolve the vertical trajectory prediction conundrum
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![Page 5: A Perspective on NASA Ames Air Traffic Management Research Jeffery A. Schroeder Federal Aviation Administration* * Formerly NASA Ames.](https://reader035.fdocuments.net/reader035/viewer/2022062801/56649e625503460f94b5e57b/html5/thumbnails/5.jpg)
Past Key ContributionsTraffic Management Advisor
BOS
ZNY
MEM
ORD
PHXLAX
SFODEN
MSP
DFWATL
FLL
Minneapolis
Seattle
Salt Lake
Oakland
Los Angeles
Albuquerque
Denver
Houston
Kansas City
Memphis
Fort Worth**
Atlanta
Miami
Jacksonville
Chicago
Boston
Cleveland
Washington
Indy
LAS
MIA
SEA
TMA installed, metering achieved
SLC
PDX
MCO
IAD
EWR
STL CVG
DTW
LGA
JFK
MDW
Adjacent- center- metering sites
IAH
CLT
PHL
Throughput increased by 3-5%
NASA version
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Past Key ContributionsContinuous Descent Arrivals in Traffic
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Past Key ContributionsDirect-To
900 flying minutes saved a day at Ft. Worth Center* 7
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ControllerInterface
Data Link
Voice Link
Emerging Cockpit Technologies + Traffic Alert & Collision Avoidance System (TCAS)
TCAS
Trajectory Automation(2-20 min time horizon)
Safety Assurance(0-3 min time horizon)
Present ResearchSeparation Assurance
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![Page 9: A Perspective on NASA Ames Air Traffic Management Research Jeffery A. Schroeder Federal Aviation Administration* * Formerly NASA Ames.](https://reader035.fdocuments.net/reader035/viewer/2022062801/56649e625503460f94b5e57b/html5/thumbnails/9.jpg)
ControllerInterface
Data Link
Voice Link
Emerging Cockpit Technologies + Traffic Alert & Collision Avoidance System (TCAS)
TCAS
Trajectory Automation(2-20 min time horizon)
Safety Assurance(0-3 min time horizon)
Present ResearchSeparation Assurance
9
![Page 10: A Perspective on NASA Ames Air Traffic Management Research Jeffery A. Schroeder Federal Aviation Administration* * Formerly NASA Ames.](https://reader035.fdocuments.net/reader035/viewer/2022062801/56649e625503460f94b5e57b/html5/thumbnails/10.jpg)
Cleveland Center New York Center
Fort Worth Center
Present ResearchSeparation Assurance
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Uni
que
airc
raft
pai
rs
Time (min)
Today’s operations
Aircraft pairs
Present ResearchSeparation Assurance
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One controller doing work of 5 to 10 people. No loss of separation.
Uni
que
airc
raft
pai
rsUni
que
airc
raft
pai
rsAircraft pairs
Time (min)
Today’s operations
Automation detects, human resolves
Aircraft pairs
Time (min)
Present ResearchSeparation Assurance
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![Page 13: A Perspective on NASA Ames Air Traffic Management Research Jeffery A. Schroeder Federal Aviation Administration* * Formerly NASA Ames.](https://reader035.fdocuments.net/reader035/viewer/2022062801/56649e625503460f94b5e57b/html5/thumbnails/13.jpg)
ControllerInterface
Data Link
Voice Link
Emerging Cockpit Technologies + Traffic Alert & Collision Avoidance System (TCAS)
TCAS
Trajectory Automation(2-20 min time horizon)
Safety Assurance(0-3 min time horizon)
Present ResearchSeparation Assurance
13
![Page 14: A Perspective on NASA Ames Air Traffic Management Research Jeffery A. Schroeder Federal Aviation Administration* * Formerly NASA Ames.](https://reader035.fdocuments.net/reader035/viewer/2022062801/56649e625503460f94b5e57b/html5/thumbnails/14.jpg)
69 Operational ErrorsNASA’s tactical safety assurance
Today’s conflict alerting
Alerts, %
Present ResearchSeparation Assurance
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Broad Sketches of the Other Research
• Traffic flow management– Improving sector demand predictions– Translating weather for effective re-routing– Developed structure for deciding on proper controls– Investigating aircraft-by-aircraft and aggregate optimization– Developed framework for collaboration
• Terminal area– Capacity increases with improved time-based scheduling– Alternatives for conflict detection and resolution in terminal
area– Simulations of very closely spaced parallel approaches
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Broad Sketches of the Other Research
• Configuring airspace dynamically– Multiple algorithms used to draw geometries with a recent
bakeoff showing Voronoi-genetic showing most promise– Examined combining under-utilized sectors in Cleveland
showing a potential reduction of 40% in sector-hours
• Airport surface– Optimizing surface flow showing 50% reductions in total taxi
time– Real-time simulation investigated controller acceptability of
precision-taxi operations
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Broad Sketches of the Other Research
• Trajectory prediction uncertainty– Developed framework for requirements, comparisons, and
communication of trajectory engines
• System-level analysis– Completed broad studies and have been integrating sets of
two technologies (i.e., surface/terminal, TFM/separation)
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How Long for Deployment in the Airspace?*
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How Long for Deployment in the Airspace?*
ASDE-X STARS CPDLC WAAS LAAS(GBAS)
ConOpsTo
Commisioning(years) 10
20
19*2004 GAO report
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How Long for Deployment in the Airspace?*
*2004 GAO report
ASDE-X STARS CPDLC WAAS LAAS(GBAS)
ConOpsTo
Commisioning(years) 10
20
TMA
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Flights
Altitude prediction error, ft
Mean = 240 ftσ = 2100 ftn = 1636
Vertical Trajectory Prediction Errors
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![Page 22: A Perspective on NASA Ames Air Traffic Management Research Jeffery A. Schroeder Federal Aviation Administration* * Formerly NASA Ames.](https://reader035.fdocuments.net/reader035/viewer/2022062801/56649e625503460f94b5e57b/html5/thumbnails/22.jpg)
Flights
Altitude prediction error, ft
Mean = 240 ftσ = 2100 ftn = 1636
Vertical Trajectory Prediction Errors
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Trajectory Prediction Errors
8400 ft
43,000 ft
46,000 ft
Current uncertainty in 5 mins
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Trajectory Prediction Errors
8400 ft
43,000 ft
46,000 ft
Likely required uncertainty in 5 mins
30,000 ft
30,000 ft
1000 ft
Current uncertainty in 5 mins
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Summary
• Accurate trajectory prediction sustained key past contributions
• Present research has wide coverage, with separation assurance and traffic flow management being the top two thrusts
• We need to enable more first-look operational evaluations to meet the NextGen objectives
25