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Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-1A Overview of NLR Free Flight project ‘97 - ‘99 Jacco Hoekstra

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Presentation on theme: "Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-1A Overview of NLR Free Flight project ‘97 - ‘99 Jacco Hoekstra"— Presentation transcript:

1 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-1A Overview of NLR Free Flight project ‘97 - ‘99 Jacco Hoekstra Ronald van Gent Rob Ruigrok

2 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-2A “Free Flight with Airborne Separation will result in an uncontrolled, dangerous jungle without a firm central controlling element such as ATC.” “Pilots haven’t got the time, the training nor the mental resources available to function as ATC on top of flying the aircraft.”

3 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-3A 1997: Three sub-studies: l CONCEPTUAL DESIGN Tool: Traffic Manager: Off-line simulations –Find a suitable base-line concept l SAFETY ANALYSIS Tool: TOPAZ (Traffic Organization and Perturbation AnalyZer) –Compare safety of Airborne Separation with safety ATC l HUMAN-IN-THE-LOOP EXPERIMENT phase I Tool: Research Flight Simulator –Validation of concept with Man-in-the-Loop –Human Machine Interface Validation

4 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-4A 1998: Four sub-studies: l CONFLICT GEOMETRY STUDY Tool: Traffic Manager: Off-line simulations –Check critical geometries: wall, etc. l AVIONICS STUDY Literature survey –Check requirements for RNP, ADS-B etc. l COST-BENEFITS & PERFORMANCE Tool: Traffic Manager: Off-line simulations –Costs of conflict resolution l HUMAN-IN-THE-LOOP EXPERIMENT phase II Tool: Research Flight Simulator –Validation of PredASAS & mixed equipage

5 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-5A 1999: Three activities: l DISSEMINATION Conferences, Web site, Contract report, RTCA, ICAO –Explain results obtained so far l DATA ANALYSIS phase II trials - Analysing data generated in phase II trials l DEVELOPMENT HUMAN INTERACTION EXP Tool: Traffic Manager, Freesim & internet –Effect of competition

6 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-6A Free Flight Operational Concept l Reduce Costs via user preferred routing –Horizontally direct to destination optimum speed –Vertically optimum level => cruise climb l 100% Airborne Separation Assurance (no ATC)

7 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-7A Conceptual Design - Traffic Manager

8 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-8A Conflict Detection & Resolution Intruder’s protected zone Heading distance Speed change Avoidance vector Minimum distance Ownship Intruder

9 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-9A Complex Conflict geometries l ‘Wall’ scenarios, ‘super conflict’ (n = 4,8,10,12,16) and ‘crossing the street’ Horizontal wall scenarioSuper conflict n=16 scenario

10 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-10A Traffic Symbol added to ND l Symbology on Navigation display based on data available via ADS-B l Track indicated with arrow shaped symbol instead of track line to avoid clutter l Label text selectable with de-clutter switches l Call sign added to label of traffic symbol for inter-traffic and crew communication

11 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-11A Conflict Detection & Resolution l Symbology based on resolution algorithm l Provides insight into resolution l Colour indicates urgency: Amber = min Red = min (time to loss of separation)

12 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-12A Navigation Display

13 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-13A Human-in-the-loop 97 Simulation Configuration AIRSIM RFS TEM (TMX)

14 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-14A Human-in-the-Loop experiment 97 Results

15 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-15A Human-in-the-loop experiment 98 l Goals –study effect of Predictive ASAS (conflict prevention) –study the transition to Free Flight Airspace (in space) –study the transition towards Free Flight in time l Starting points: –equipping aircraft should be immediately beneficial to the airlines –equipping should be economy driven in stead of mandatory –benefit the equipped aircraft, without excluding the unequipped aircraft

16 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-16A Predictive ASAS Don’t go indications: Track Vertical speed Speed

17 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-17A 1998 Human-in-the-loop Results: Workload Airborne comparison

18 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-18A Overall Conclusions l The feasibility of Free Flight with Airborne Separation Assurance could not be refuted, based on 7 NLR studies on Free Flight l The flight deck crew was able to handle much higher traffic densities than the ground controller (distributed versus centrally organized nature) Free Flight might be a solution for current and future airspace capacity problems

19 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-19A Current men-in-the-loop experiment: human interaction experiment l Logging into Traffic Manager via internet using downloadable FreeSim flight simulation program Goal: Test effect of humans vs models competition on efficiency parameters

20 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-20A Current & future activities: l HUMAN INTERACTION EXPERIMENT Check web site l PHASE III FLIGHT SIMULATOR TRIALS From cruise to final incl. SUA, weather, RTA together with Langley l NASA LANGLEY SIMULATION DEVELOPMENT SUPPORT - Compatible sim configurations - Jointly develop ADS-B models l Continue dissemination efforts

21 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-21A More information l NLR Free Flight web site: Downloads section contains reports, presentations and demos. l Comprehensive report on overall studies Check web site for download! l Demo sessions of human interaction experiment configuration will be announced on the website and NASA Langley.

22 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-22A Distributed system vs. central system l Effect on workload, safety and technological requirements

23 Nationaal Lucht- en Ruimtevaartlaboratorium National Aerospace Laboratory NLR CXXX-23A Task comparison Controlled vs. Free Flight


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