Towards Systematic Air Traffic Management in a Regular Lattice - - PowerPoint PPT Presentation

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Towards Systematic Air Traffic Management in a Regular Lattice - - PowerPoint PPT Presentation

Oct 03, 2023 299 likes •596 views

Long Term Investigations, EEC Towards Systematic Air Traffic Management in a Regular Lattice Horst Hering, Richard Irvine EUROCONTROL Experimental Centre, France European Organisation for the Safety of Air Navigation 1 Long Term

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Towards Systematic Air Traffic Management in a Regular Lattice

Horst Hering, Richard Irvine

EUROCONTROL Experimental Centre, France

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

  • SuperHighway project
  • Regular lattice basic design
  • Lattice operation
  • Initial simulation results
  • Vertical movements
  • Sectorisation
  • Simulation results
  • Conclusion

Outline

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Super Highway Project

European Commission 6th Framework Program Started April 2006, Duration 2 years Assessment of two scenarios

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Where should the Super Highways be? How many will there be? Where will they be in relation to one another? How will they cross? How will they connect? What will be the place of Super Highways in a Single European Sky?

Questions …

What principles would allow systematic airspace design?

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Area navigation allows aircraft to navigate along arbitrary routes, and

  • pens the door to clean-sheet redesign of the route network.

The existing route network has grown over time based on navigation from beacon to beacon.

Technical – area navigation Political – Single European Sky

Scenario 2 – Regular Lattice - EEC

Enablers

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Starting point – safety – crossing conflicts

July 1st 2002

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Layers of parallel tracks could eliminate crossing conflicts between cruising aircraft

4 layers, 4 pairs (8) of allowed directions of flight

Idea 1:

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Navigating with fixed directions

Right turn + climb 1000 ft Left turn + descent 1000 ft

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Regular lattice

Airspace structure and operation same throughout region

Idea 2:

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Dublin Naples Horizontal inefficiency 1.02

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Dublin Frankfurt Horizontal inefficiency 1.05

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Dublin Belgrade Horizontal inefficiency 1.06

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Dublin Belgrade

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Fast-time simulation

Define a volume of interest – similar to core area ~ 500 nm x 500 nm, beginning at FL300 Subset SESAR 2005 traffic (entering the volume of interest) Aircraft have nominal mass Vary routing and cruise level allocation scheme within volume of interest Measure number of conflicts and total fuel consumption

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Conflicts

1000 2000 3000 4000 5000 6000 Direct unconstrained Flight plans, semi-circular Direct semicircular Lattice 70 Lattice 35 Navigation schemes Conflicts Total conflicts Level level crossing conflicts

No crossing conflicts between cruising aircraft Lattice 70 nm, 5% increase in total number of conflicts 55% same direction, climbing/descending through level Suggests need to separate climbing/cruising/descending Need to perform flow management (ground holding) for lattice rather than use departure times for current routes and sectors

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Joining the lattice - vertical movements

Aircraft performance assumptions:

  • speed ~8 nm/min.
  • climb/descent 1000 feet/min.
  • Max. vertical movement
  • Joining the Lattice: 1000-4000 feet
  • Move. between layers: 4000 feet

FL 290 5 NM 5 NM 32 NM

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Vertical movements on diagonal tracks

Green and brown tracks Alternative climb and descent

70 nm ~50 nm

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Vertical movements on horizontal/vertical tracks

Red and blue tracks

1 2

Stepped climb and descent

1 2 2 1 2 1 2 1 1 2 1 2 1 2 2 2 1 1 2 1 2 1 2 1 2 2 2 2 1 1 1 1 2 2 1 1

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Vertical movements in the lattice

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Sectorisation of the lattice

A first level

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Sectorisation of the lattice

A second level

1 2

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Fast-time simulation

Define a volume of interest – similar to core area ~ 500 nm x 500 nm, beginning at FL300 Subset SESAR 2005 and 2020 traffic (entering the volume of interest) Aircraft have nominal mass Vary Lattice spacing within volume of interest Measure number of conflicts and fuel consumption (in volume of interest)

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Conflicts

1000 2000 3000 4000 5000 6000 Direct unconstrained Flight plans, semi- circular Direct semicircular Lattice 70 Lattice 70 + climbing/descending lanes (ESTIMATED) Navigation schemes Conflicts Total conflicts Level level crossing conflicts

Linear dependency between SESAR 2005 and 2020 traffic Lattice 70nm  space for vertical movements and reserved areas 26% reduction of conflicts estimated with separated climbing/descending lanes No crossing conflicts between cruising aircraft

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Extra fuel consumption in area of interest / kilotonnes 1.5 1.55 1.6 1.65 1.7 1.75 1.8 1.85 Flight plans, semi- circular Lattice 70 Extra fuel consumption in area of interest

Extra fuel consumed in area of interest compared to a direct routes baseline

Extra fuel consumed

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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Potential advantages

  • Regular structure allows replication of airspace design

solutions throughout a region

  • Common operating procedures throughout a region
  • Elimination of crossing conflicts between cruising aircraft.
  • Two easily identifiable populations – “stable” (low

monitoring), “transition” (higher monitoring)

  • Multiple routes facilitate traffic distribution and rerouting

around reserved areas

  • Easy to extends the lattice area if required
  • Towards “Single European Sky”
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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Further investigation

  • Improve model of aircraft mass
  • Investigate use of joining/leaving lanes to separate

climbing/descending/cruising aircraft

  • Apply suitable flow management algorithm
  • Operational feasibility
  • Rerouting around reserved areas
  • Workload and capacity
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European Organisation for the Safety of Air Navigation

Long Term Investigations, EEC

Comments / questions / suggestions ?