Variable Taxi Time Analysis at Lisboa Airport

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© 2004 EUROCONTROL 1
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
CDM Task Force
Variable Taxi Time Analysis at Lisboa Airport
by Bruno DesartManager Airport Capacity & Delay AnalysisAirports & Environment Management (EATM/DAS/AEM)
© 2004 EUROCONTROL 2
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
Project Scope
•
To calculate and calibrate variable taxi times for RWY 03/21 operations at LIS Airport
•
5 phases
–
Phase 1 : variable taxi time calculation for RWY 21 operations by EUROCONTROL
–
Phase 2 : Calibration variable taxi times RWY 21 Ops by ANA/NAV
–
Phase 3 : variable taxi time calculation for RWY 03 operations by EUROCONTROL
–
Phase 4 : Calibration variable taxi times RWY 03 Ops by ANA/NAV
–
Phase 5 : Automation of variable taxi times calculation for LIS Airport
•
This presentation addresses Phase 1 only
© 2004 EUROCONTROL 3
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
1.Preliminary
•
Study of the taxi network according to the routes sent by ANA
•Study of the current stand positions according to the information in the AIP
According to that, we proceed to the:
2.
Generation of the taxi network in the Taxi Network Builder.
•Standard taxi routes modeled as per information provided by ANA in 2002;
•
Two entries to the TWY network :
•
Entry_1, that is RWY exit P
•
Entry_2, that is end of RWY 21
•
All the departures are going to THR 21
•
Stands aggregated into stand groups (see next slide)
Process
© 2004 EUROCONTROL 4
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
Stand aggregation
© 2004 EUROCONTROL 6
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
TWY Routes Representation
© 2004 EUROCONTROL 7
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
3.
Traffic sample
•Traffic samples : 01-05-04, 28-04-04 and 30-04-04;
•Military traffic removed from the sample;
•Allocated stand is matched with related stand group (see mapping table here before);
•ercentage of stand group usage is calculated as an average over the full traffic sample (i.e. 3 days) (See next slide);
•Assumptions(to be confirmed by ANA/NAV):
•
50% landings vacate RWY21 at exit P, 50% vacate RWY 21 at RWY end;
•
All the departures line up at THR21 (i.e. no intersection take-off)
Process(Cont’)
© 2004 EUROCONTROL 8
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
Stand Group Usage Distributionbased on traffic sample dated 01-05-04, 28-04-04 and 30-04-04
© 2004 EUROCONTROL 9
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
􀀴
Minimum separation in queue30 m
􀀴
Minimum distance between aircraft
for conflict detection80 m
􀀴
Insignificant auxiliary traffic during peak
􀀴
Taxi Speed:
􀀴
Rapid Exit Taxiways20 Kts
􀀴
Taxiway15 Kts
􀀴
Taxilane (for both arrivals & departures)7 Kts
TWY Operations AssessmentAssumptions
© 2004 EUROCONTROL 10
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
ResultsVariable outbound taxi timesbased on traffic density 01-05-04
•
Route time= free taxi time, in average over the 24 hours of operations
•Time lost= time spent in ground conflict detection & resolution , in average over the 24 hours of operations
•Taxi time= total taxi time required to taxi from origin to destination , in average over the 24 hours of operations (= route time + time lost)
•
Maximum Taxi Time= max total taxi time during peak.
© 2004 EUROCONTROL 11
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
Results (Cont’)Variable inbound taxi timesbased on traffic density 01-05-04
© 2004 EUROCONTROL 12
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
Results(Cont’)Traffic density distribution per taxi routebased on traffic density 01-05-04
© 2004 EUROCONTROL 13
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
Action Plan
1.
ANA/NAV to review and confirm assumptions related to
•
Level of aggregation (stand group)
•
Taxi routes
•
RWY exits/access used, and usage distribution
•
Stand group usage
•
Ground operations (minimum separation on ground and taxi speeds
For RWY 21 Operations
2.
ANA/NAV to perform Phase 2 (calibration of variable taxi times for RWY 21 operations through comparison with statistics and operational experience)
3.
ANA/NAV to provide the following data to EUROCONTROL to initiate Phase 3 (variable taxi time calculation for RWY 03 operations)
•
Taxi routes
•
RWY exits/access used, and usage distribution
•
Ground operations per TWY segment (minimum separation on ground and taxi speeds)
© 2004 EUROCONTROL 14
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
More support
CAMACA Project ManagerBruno DesartEurocontrolRue de la Fusée, 96B-1130 Brussels, BelgiumTel: +32 2 729 3137Fax: +32 2 729 9008bruno.desart@eurocontrol.intCAMACA Users Group Forumhttps://extranet.eurocontrol.intCAMACA helpdeskEurocontrolTel: +32 2 729 3448Fax: +32 2 729 9193camaca@eurocontrol.intCAMACA websitewww.eurocontrol.int/camaca
© 2004 EUROCONTROL 15
Airports & Environment Management
CDM TF/9
Brussels, 16 November 2004
For any additional information,
please feel free to contact
Bruno Desart
Manager Airport Capacity & Delay Analysis
Airports & Environment Management EAMT/DAS/AEM
EUROCONTROL
96, Rue de la Fusée
B-1130 Brussels
bruno.desart@eurocontrol.int
Tel. +32 2 729 31 37
Fax . +32 2 729 91 93
Any Question?
Thank you for your attention.