EUROCONTROL CRDS 22-24/11/2004 ICRAT 1/15 ICRAT 2004, Zilina, November 22-24, 2004 Towards the...
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Transcript of EUROCONTROL CRDS 22-24/11/2004 ICRAT 1/15 ICRAT 2004, Zilina, November 22-24, 2004 Towards the...
EUROCONTROL CRDS
22-24/11/2004ICRAT
1/15
ICRAT 2004, Zilina, November 22-24, 2004
Towards the traffic synchronisation Towards the traffic synchronisation in a Functional Airspace Blockin a Functional Airspace Block
Lenka DraveckaUniversity of Zilina
and EUROCONTROL CRDS
Supervisor: Vu DUONG and Tomas DENDIS
EUROCONTROL CRDS
22-24/11/2004ICRAT
2/15
Goal of the research
The overall aim is to analyse The overall aim is to analyse
the task sharing and task duration and their impact the task sharing and task duration and their impact
on the operational feasibility of synchronised on the operational feasibility of synchronised
ATM Concept in Central European Upper Airspace.ATM Concept in Central European Upper Airspace.
The overall aim is to analyse The overall aim is to analyse
the task sharing and task duration and their impact the task sharing and task duration and their impact
on the operational feasibility of synchronised on the operational feasibility of synchronised
ATM Concept in Central European Upper Airspace.ATM Concept in Central European Upper Airspace.
flow-wide improvement in performanceflow-wide improvement in performance
in terms of synchronised distance separation in terms of synchronised distance separation
between all aircraft evolving in a flow between all aircraft evolving in a flow
EUROCONTROL CRDS
22-24/11/2004ICRAT
3/15
How to start?
Synchronisation conceptSynchronisation concept Highway route network with exact aircraft Highway route network with exact aircraft
spacingspacing
Operational feasibilityOperational feasibility Political & social and technological issues Political & social and technological issues
asideaside
Controllers’ taskloadControllers’ taskload Adequate task sharing & durationAdequate task sharing & duration
Several concepts follow the idea of highway route network (tube system)
with aircraft sequencing to increase
the airspace/airport capacity with the need of new technologies,
automation and change of working methods.
Several concepts follow the idea of highway route network (tube system)
with aircraft sequencing to increase
the airspace/airport capacity with the need of new technologies,
automation and change of working methods.
Performance Review Report 7
EUROCONTROL CRDS
22-24/11/2004ICRAT
4/15
Reality
Traffic lanes already existMadrid/Barcelona: about 60 flights (each way) per day
Rome/Milan: about 30 flights (each way) per day
EUROCONTROL CRDS
22-24/11/2004ICRAT
5/15
Why synchronisation & when is it beneficial?
Operate a flow instead of flight by flightOperate a flow instead of flight by flight More punctualityMore punctuality
Capacity gaining and efficiency increaseCapacity gaining and efficiency increase Sequencing instead of separationSequencing instead of separation By gaining fluidity thus saving capacityBy gaining fluidity thus saving capacity
When does the flow synchronisation start to be beneficial?When does the flow synchronisation start to be beneficial?
CCss = L / D = L / Dspacespace
If If Capacity of synchronised flow Capacity of synchronised flow >> Capacity of the flow under current conditionsCapacity of the flow under current conditions
When does the flow synchronisation start to be beneficial?When does the flow synchronisation start to be beneficial?
CCss = L / D = L / Dspacespace
If If Capacity of synchronised flow Capacity of synchronised flow >> Capacity of the flow under current conditionsCapacity of the flow under current conditions
Cs – capacity of the flow
L – length of the flow
Dspace – min. separation
EUROCONTROL CRDS
22-24/11/2004ICRAT
6/15
Why taskload?
Estimation and evaluation of Estimation and evaluation of controller taskload is an controller taskload is an important part to support important part to support synchronised ATM conceptsynchronised ATM concept
Task sharing and their duration Task sharing and their duration influence the controller taskload influence the controller taskload hence the sector capacityhence the sector capacity
EUROCONTROL CRDS
22-24/11/2004ICRAT
7/15
Minimun-3FLs Minimun-3FLs (one direction)(one direction)
Minimum - 5Fls (two directions)
How? Synchronisation model - simplified
Flow designFlow design Part of the demand passing in the flowPart of the demand passing in the flow
SPECIALIZED LEVELSSPECIALIZED LEVELS High speedHigh speed Lower speedLower speed CrossingCrossing Climb/descendClimb/descend
Sequence = speed per flowSequence = speed per flow Average Average of maximum and minimum speed specified for a flowof maximum and minimum speed specified for a flow
FL3 synchronised
FL2 crossing
FL1 climb/descend
EUROCONTROL CRDS
22-24/11/2004ICRAT
8/15
Models
I.I. One entry flowOne entry flow Only aircraft already in the flow will be synchronisedOnly aircraft already in the flow will be synchronised
II.II. Multi entry flowMulti entry flow Aircraft can join the flow until last Meter pointAircraft can join the flow until last Meter point
Give more time for speed adaptationGive more time for speed adaptation Doesn’t restrict the aircraft to join the flowDoesn’t restrict the aircraft to join the flow Higher flexibilityHigher flexibility
Multi EntryExit
Entry point
EUROCONTROL CRDS
22-24/11/2004ICRAT
9/15
CCss = L / D = L / Dspacespace Example: current conditions: 60 aircraftExample: current conditions: 60 aircraft
The whole flow length synchronised: 100 aircraftThe whole flow length synchronised: 100 aircraft
Cs >> Cc
Than: Lsmin = D= Dspace space ** min. nb. of aircraft (61)min. nb. of aircraft (61)
And:And: L = L L = Lss + L + Ltt
Means that: L Ltt = L – L = L – Lss
Flow structure – transition time/distance?
C – capacity of the flow Cc – capacity of the flow under current conditions
Cs – capacity of the synchronised flow
L – length of the flow
Ls – synchronised length
Lt – transit length
Dspace – min. separation between aircraft
Transit phase
Synchronised phase
Last Ref. Point 1st Ref. Point CEATS Boundary
Transit phase encompass ONE sector (?)
EUROCONTROL CRDS
22-24/11/2004ICRAT
10/15
Restrictions:Restrictions: To maintain the flow – moving of the aircraft should be limitedTo maintain the flow – moving of the aircraft should be limited
Build: FLAS, vectoring, headingBuild: FLAS, vectoring, headingMaintain: sequenceMaintain: sequence
Main flow – untouched after the last Meter pointMain flow – untouched after the last Meter point Restrictions applied to the crossing trafficRestrictions applied to the crossing traffic Desired spacingDesired spacing
DDspacespace = D = D22 – D– D11 → → after last Meter fix: after last Meter fix: ∑ D∑ Di+1i+1 = ∑ D = ∑ Dii + D + Dspacespace
i = 1 i = 1
n n
Multi entry flow
D spaceD space
EUROCONTROL CRDS
22-24/11/2004ICRAT
11/15
Where to start?
CEATS–Central European Air Traffic ServicesCEATS–Central European Air Traffic Services
Rapid increase of traffic CEATS will become high density region Increase of ATFM delays
Czech, Slovakia, Austria, Hungary, Slovenia, Croatia, Bosnia & Herzegovina, Italy (ACC Padua) Czech, Slovakia, Austria, Hungary, Slovenia, Croatia, Bosnia & Herzegovina, Italy (ACC Padua)
EUROCONTROL CRDS
22-24/11/2004ICRAT
12/15
New STATFOR forecast for CEATS States (FEB 2004)
Growth (%) - Total Flights 2004 2005
Austria 6.5 12.4
Bosnia and Herzegovina(based on STATFOR Medium Term
Forecast)
5.8 9.8
Croatia 4.4 10.2
Czech Republic 16 32.2
Italy(All ACCs)
0.5 3.4
Hungary 11 16.1
Slovakia 19 33.2
Slovenia 3.2 10.2Proportion of summer en-route ATFM delays in European regions
When comparing the short and the medium term forecast, it is clear that capacity planning in the Central Europe should follow the high growth scenario and that delivery of ATC capacity in this area will become a challenge.
There are some notable increases in delay in Paris, France West and “CEATS” =124%.“CEATS” =124%.
EUROCONTROL CRDS
22-24/11/2004ICRAT
13/15
Preliminary conclusion
Flow synchronisation can be used to smoothen the traffic Flow synchronisation can be used to smoothen the traffic operations in an environment with mainly long-hauls flights operations in an environment with mainly long-hauls flights
and congested areas.and congested areas.
Sector capacity and taskload increase are the main elements Sector capacity and taskload increase are the main elements to make this approach able to compete successfully with to make this approach able to compete successfully with
current operations or alternative proposals. current operations or alternative proposals.
The positive results depends on appropriate synchronisation The positive results depends on appropriate synchronisation model and adequate distribution of the controllers’ tasks model and adequate distribution of the controllers’ tasks
and their durations.and their durations.
EUROCONTROL CRDS
22-24/11/2004ICRAT
14/15
Future work
Synchronisation modelSynchronisation model Mathematical and experimental set upMathematical and experimental set up
Controllers’ acceptance Controllers’ acceptance Methodology: qualitative assessment through questionnaires & Methodology: qualitative assessment through questionnaires &
interviewsinterviews Task sharing & tasks durationTask sharing & tasks duration Controllers from 8 CEATS countriesControllers from 8 CEATS countries
Want to achieveWant to achieve Objective results of sector capacity and controllers’ taskload Objective results of sector capacity and controllers’ taskload
increase/decrease through increase/decrease through adequate task sharing and their adequate task sharing and their durations (?) supporting operational feasibility of synchronised durations (?) supporting operational feasibility of synchronised ATM concept (?)ATM concept (?)
EUROCONTROL CRDS
22-24/11/2004ICRAT
15/15
THANK YOU FOR THANK YOU FOR ATTENTION!ATTENTION!
Contact: Contact: [email protected]
Phone number:+36 30 584 0667Phone number:+36 30 584 0667