NASA’s Free Flight Air Traffic Management Research

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1 Free Flight/DAG-TM Workshop, NASA Ames, May 22-24
Advanced Air Transportation Technologies Flight Deck
Air Traffic
Service
Provider
Aeronautical
Operational
Control
NASA’s Free Flight
Air Traffic Management Research
Robert Jacobsen
Associate Director, ASC Program
NASA Free Flight/DAG-ATM Workshop
May 22-24, 2000
2 Free Flight/DAG-TM Workshop, NASA Ames, May 22-24
Advanced Air Transportation Technologies Flight Deck
Air Traffic
Service
Provider
Aeronautical
Operational
Control
Free Flight Definition
Free Flight is “a safe and efficient flight operating
capability under instrument flight rules (IFR) in which the
operators have the freedom to select their path and speed
in real time. Air traffic restrictions are only imposed to
ensure separation, to preclude exceeding airport capacity,
to prevent unauthorized flight through Special Use
Airspace (SUA), and to ensure safety of flight.
Restrictions are limited in extent and duration to correct
the identified problem. Any activity which removes
restrictions represents a move toward free flight.”
RTCA Select Committee on Free Flight, 1995
3 Free Flight/DAG-TM Workshop, NASA Ames, May 22-24
Advanced Air Transportation Technologies Flight Deck
Air Traffic
Service
Provider
Aeronautical
Operational
Control
NASA’s Effort to Support Free Flight
As part of the AATT project, NASA is conducting
research efforts to support the RTCA Free Flight
initiative
This effort is founded on
• RTCA Free Flight OPSCON (Task Force 3)
document
• FAA’s OPSCON 2005
• FAA’s Architecture 4.0
4 Free Flight/DAG-TM Workshop, NASA Ames, May 22-24
Advanced Air Transportation Technologies Flight Deck
Air Traffic
Service
Provider
Aeronautical
Operational
Control
RTCA’s Free Flight Task Force 3
“For 2005, the concept describes the next
incremental steps towards Free Flight…The
Mature State captures more advanced concepts
and capabilities, such as self-separation”
“Separation assurance remains the responsibility of
the service provider. However, that responsibility
is shifted to the flight deck for specific operations”
[from Section 1.4 The Evolution of NAS ]
5 Free Flight/DAG-TM Workshop, NASA Ames, May 22-24
Advanced Air Transportation Technologies Flight Deck
Air Traffic
Service
Provider
Aeronautical
Operational
Control FAA’s OPSCON for 2005
“As a result of the new systems in place in
2005…air safety has been increased through
implementation of conflict detection and
resolution tools, the inclusion of the flight deck in
some separation decision-making, and greatly
enhanced weather detection and reporting
capabilities” (Narrative, Pg. 2)
“Separation assurance remains the responsibility
of the service provider. However, that
responsibility is shifted to the flight deck for
specific operations” (Narrative, Pg. 2)
6 Free Flight/DAG-TM Workshop, NASA Ames, May 22-24
Advanced Air Transportation Technologies Flight Deck
Air Traffic
Service
Provider
Aeronautical
Operational
Control
FAA’s Architecture 4.0
“Modernizing the NAS will involve technology and
cost risks. Some of the technologies…have not
been tested in a operational environment…aircraft
air-air separation…[will] require testing and
validation prior to implementation” [§2.6]
“The essential focus is the Free Flight vision of a
future NAS that permits users to fly without the
constraints…this shift will be made possible by
decision support tools for controllers, an enhanced
pilot role in separation assurance using advanced
cockpit avionics, use of space-based navigation
aids, and use of a dynamic collaborative decisionmaking
process” [§4.9]
7 Free Flight/DAG-TM Workshop, NASA Ames, May 22-24
Advanced Air Transportation Technologies Flight Deck
Air Traffic
Service
Provider
Aeronautical
Operational
DAG-TM Definition Control
Distributed Air-Ground Traffic Management (DAGTM)
is a National Airspace System concept in
which Flight Crews, Air Traffic Service Providers,
and Aeronautical Operational Control personnel use
distributed decision making to:
– Enable user preferences/flexibility, and
– Increase system capacity, and
– Meet air traffic management requirements
The DAG-TM concept is an example of “mature”state Free Flight
providing the direction for supporting research and development activities.
8 Free Flight/DAG-TM Workshop, NASA Ames, May 22-24
Advanced Air Transportation Technologies Flight Deck
Air Traffic
Service
Provider
Aeronautical
Operational
Control
Evolutionary NAS Conceptual Definition
Free Flight
Phase 1
Free Flight
Phase 2
Current
NAS
Expansion
Of
Operational
Modes in NAS
Scope of Free Flight Operational Concepts
RTCA
“Mature”
State
DAG-TM

duanpingnpu

thanks thanks