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14/01/20161 Air Traffic Management Panel Madrid 21-22 May 2002 AVIATION OPERATIONAL MEASURES FOR FUEL AND EMISSIONS REDUCTION WORKSHOP HOW TO SAVE FUEL.

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Presentation on theme: "14/01/20161 Air Traffic Management Panel Madrid 21-22 May 2002 AVIATION OPERATIONAL MEASURES FOR FUEL AND EMISSIONS REDUCTION WORKSHOP HOW TO SAVE FUEL."— Presentation transcript:

1 14/01/20161 Air Traffic Management Panel Madrid 21-22 May 2002 AVIATION OPERATIONAL MEASURES FOR FUEL AND EMISSIONS REDUCTION WORKSHOP HOW TO SAVE FUEL BY LOSING TIME? Jean-Pierre NICOLAON EUROCONTROL - EEC

2 14/01/20162 Air Traffic Management Panel Madrid 21-22 May 2002  IN ABSORBING ARRIVAL DELAYS LINEARY DURING DESCENT INSTEAD OF HOLDING STACK TECHNIQUE

3 14/01/20163 Air Traffic Management Panel Madrid 21-22 May 2002 ARRIVAL TRAFFIC IS GENERALLY ORGANIZED THROUGH SUCCESSIVE LAYERS:  STEP 1  ARRIVAL SLOTS (AIRLINES SCHEDULES) ARE DETERMINED ACCORDING TO RUNWAY CAPACITY (TYPICAL VALUE 44 a/c PER HOUR FOR SPECIALIZED RUNWAY)

4 14/01/20164 Air Traffic Management Panel Madrid 21-22 May 2002  STEP 2  DEPARTURE SLOTS (including overbooking) ARE ALLOCATED ACCORDINGLY BY ATFM (pretactical )

5 14/01/20165 Air Traffic Management Panel Madrid 21-22 May 2002  STEP 3  ATC CONTROLLERS REFINE TRAFFIC SEQUENCES AS APPROPRPIATE (tactical)

6 14/01/20166 Air Traffic Management Panel Madrid 21-22 May 2002  NOTE:  OVERBOOKING IS REQUIRED TO COMPENSATE UNPREDICTABLE, UNEXPECTED AND INACCURATE ELEMENTS such as:  AIRLINES DELAYS  FLIGHT CANCELLATIONS  BAD WEATHER

7 14/01/20167 Air Traffic Management Panel Madrid 21-22 May 2002 HOWEVER OVERBOOKING AND INACCURACY CAN INDUCE HOLDING BEFORE LANDING THOSE DELAYS COULD BE ABSORBED EITHER :  IN HOLDING STACK (e.g. London)  LINEARY (e.g. Paris CDG)

8 14/01/20168 Air Traffic Management Panel Madrid 21-22 May 2002 ARRIVING TRAFFIC TO PARIS CDG + LE BOURGET

9 14/01/20169 Air Traffic Management Panel Madrid 21-22 May 2002 ARRIVING TRAFFIC TO PARIS CDG

10 14/01/201610 Air Traffic Management Panel Madrid 21-22 May 2002 ARRIVING TRAFFIC TO PARIS ORLY

11 14/01/201611 Air Traffic Management Panel Madrid 21-22 May 2002  HOLDING STACK TECHNIQUE IS BEING USED AS AN AIRCRAFT TANK CLOSE TO RUNWAY FOR PREVENTING GAPS TO HAPPEN INTO LANDING SEQUENCES.  IT CAN BE USED EASILY WITHOUT ANY COMPUTER ASSISTANCE

12 14/01/201612 Air Traffic Management Panel Madrid 21-22 May 2002  HOLDING STACK INDUCES SIGNIFICANT EXTRA FUEL BURN  IT ENABLES LONG DELAYS ABSORPTION CAPABILITY

13 14/01/201613 Air Traffic Management Panel Madrid 21-22 May 2002  LINEAR HOLDING CAN ONLY ABSORB ‘REASONABLE’ DELAYS (5/7 minutes)  IT HAS TO BE COMPLEMENTED BY HOLDING STACK FOR LONGER DELAYS  IT IS VERY SUITABLE TO HUB SEQUENCES

14 14/01/201614 Air Traffic Management Panel Madrid 21-22 May 2002  IT IS SAVING FUEL EVEN COMPARED TO NOMINAL TRAJECTORY  IT REQUIRES COMPUTER ASSISTANCE FOR EFFICIENT SEQUENCING AND SPACING

15 14/01/201615 Air Traffic Management Panel Madrid 21-22 May 2002  PROGRESSIVE SPEED REDUCTION PROFILE  SEGMENTED SPEED PROFILE EXAMPLE OF AIRBUS A310 DESCENDING AT MINIMUM DRAG SPEED ACCORDING TO : SAVED FUEL BURN/ ABSORBED DELAYS

16 14/01/201616 Air Traffic Management Panel Madrid 21-22 May 2002 TRANSITION ALTITUDE STANDARD DESCENT PROFILE M.;0,80 - 300 KT - 250 KT + HOLDING AT FL50 DESCENT PROFILE AT PROGRESSIVE REDUCED SPEED DESCENT PROFILE AT SEGMENTED SPEEDS HOLDING PROFILE 

17 14/01/201617 Air Traffic Management Panel Madrid 21-22 May 2002 TYPICAL SPEED SEGMENTS

18 14/01/201618 Air Traffic Management Panel Madrid 21-22 May 2002 ABSORBABLE DELAYS DURING DESCENT ONLY

19 14/01/201619 Air Traffic Management Panel Madrid 21-22 May 2002 FUEL BENEFITS COMPARISON/STACK VERSUS LINEAR

20 14/01/201620 Air Traffic Management Panel Madrid 21-22 May 2002 EXAMPLE OF COMPUTER ASSISTANCE INFORMATION GIVEN BY MAESTRO - ARRIVAL MANAGER Current Time Runway 25 (Le Bourget) Runway 26 left Time Scale Runway 27 (North)

21 14/01/201621 Air Traffic Management Panel Madrid 21-22 May 2002 SEQUENCE DETAILS IAF (origin) (S = Susin, M = Merue, L = Lorta) Callsign Aircraft Type Time at IAF Current Delay

22 14/01/201622 Air Traffic Management Panel Madrid 21-22 May 2002 WHAT MAGNITUDE OF BENEFITS COULD BE PROVIDED BY LINEAR HOLDING ?  THIS IS DEPENDING UPON AIRPORT AND DEMAND COMBINATION  HOWEVER SOME TYPICAL VALUES ARE ALREADY AVAILABLE

23 14/01/201623 Air Traffic Management Panel Madrid 21-22 May 2002 IN NORMAL CONDITIONS LINEAR HOLDING ALLOWS FUEL SAVING OF 2x60’x85kg = 10,200 kg PER DAY AT PARIS ORLY AND 3x110’x85kg=28,050kg PER DAY AT PARIS CDG IN HEAVY SITUATION AT PARIS ORLY (100’ min Delay) 60’ OF LINEAR HOLDING ARE SAVING 60’X85kg = 5,100kg WHILE 40’ OF HOLDING STACK ARE INCREASING FUEL BURN BY 2,400kg AT PARIS CDG (225’ min Delay) 60’x85kg=5,100kg ARE SAVED WHILE 165’x60kg =9,900kg ARE LOST

24 14/01/201624 Air Traffic Management Panel Madrid 21-22 May 2002 CONCLUSIONS  LINEAR HOLDING REDUCES FUEL BURN  IT WORKS IN REAL LIFE  ADDITIONAL BENEFITS CAN BE OBTAINED BY LINEAR HOLDING:

25 14/01/201625 Air Traffic Management Panel Madrid 21-22 May 2002  REDUCTION OF FLIGHT TIME AT LOW ALTITUDE  LOWERING NOISE  REDUCTION OF FLIGHT TIME IN THE HOLDING STACK  REDUCING RISK  LINEAR HOLDINGTHE WAY AHEAD

26 14/01/201626 Air Traffic Management Panel Madrid 21-22 May 2002 AVIATION OPERATIONAL MEASURES FOR FUEL AND EMISSIONS REDUCTION WORKSHOP Thank you !


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