Automated in-situ Turbulence reports from Airbus aircraft. Axel PIROTH

Transcription

1 Automated in-situ Turbulence reports from Airbus aircraft Axel PIROTH

2 Context & Background Atmospheric Turbulence is leading to situations somewhat uncomfortable... Page 2

3 Cost of Turbulence for Air Carriers now An intensive investigation have been performed by METRON company on Airbus request I N J U R I E S According to the US Department of Transportation, costs associated to one injured people range from 11 k$ (minor) to 333 k$ (serious) : Medical expenses Potential Legal Costs Lost employee time for flight operators For US Part 121 Flights (airliners) in the 2000s : 700 injured flight attendants per year 125 injured passengers per year A O G Cabin Refurbishing / Loads Inspection / Structural Repairs Beyond Parts & Labor : Lost revenue R E R O U T E F L C H A N G E Deviation from optimal F-PLN inducing extra fuel & delays Conservative approach due to limited reporting For US Part 121 Flights (airliners) in the 2000s : 5% of flights at non-optimal altitude 57.4 M$ / year Worldwide 2% increase cost in flight of time large additional DAL : 580 k$ / year cost for operators between 1991 & M$ / year In addition, in-flight injuries can lead to IFTB 100 k$ / event turbulence = 2 billion $ per year Pax re-accommodation Schedule disruption Page 3

4 Cost of Turbulence for Air Carriers and in future Situation will be strongly worsened in the coming years due to both : Air Traffic growth, which will be more than doubled in the next 20 years Climatic Changes, which will rise frequency and severity of turbulence Cost impact could go as high as 250% in 20 years + 170% of chance to be hit by a turbulence for A/C going from Europe to North America by next decades (*) Turbulence potentially up to 40% stronger * Research by Dr Williams (university of Reading) Page 4

5 Observed EDR The mitigation Turbulence knowledge uncertainty Need of more, live and accurate information Solution : Real-time Turbulence Automatic Reporting Live massive information leading to: No further system. No further Already probes. installed Just on a software board of 40 customization A/C over Europe. Safer flights with less injuries Airline Operations optimisation (delays, fuel consumption, diversions avoidance ) Improvement of forecast Enhance climate change understanding Page 5

6 A/C as a weather sensor A/C Airlines solutions Flight crew Atmospheric observations Weather information or alerts Services/Applications providers Met offices & Weather providers Operational Control Center Airlines solutions Improved weather forecasts Airports solutions Flight planning tool Flight tracking tool Ground modules Dispatcher Page 6

7 On-ground Segment Observed EDR applications (1/4) Page 7

8 Observed EDR applications (2/4) On-ground/on Board Segments Alerting msg Page 8

9 Statistical information Observed EDR applications (3/4) Page 9

10 Statistical information Observed EDR applications (4/4) Page 10

11 More to come! Windshear, Icing conditions Humidity UV Connected Weather Radar Pollution sensors, others... Page 11

12 Thank you

13 Thank you Backup Slides

14 Metric Selection & Computation Turbulence Assessment. Several options (as identified by WMO/AMDAR, 2003) Aircraft Vertical Acceleration (N Z ) Derived Equivalent Vertical Gust (DEVG) Eddy Dissipation Rate (EDR): ICAO guideline A/C response characterization (A/C dependant) Atmosphere characterization (no A/C dependant) EDR computation. Several algorithms (developped by NCAR, DLR ) DLR algorithm benefits: no use of A/C response Reference: Annex 3, Meteorological Service for International Air Navigation, Appendix 4, 2007 use of all wind components G e o d e t i c W i n d Tu rbulence Metric FTI parameters (IR & ADR data) CS g CS g CS g V w = V k - V a Wind Speed Ground Speed IR Air Speed ADR o Fluctuations of each geodetic wind component along A/C flight path o Time average (moving window) EDR Page 14

15 EDR - Eddy Dissipation Rate Turbulence reports downlink frequency: Every 10 for Routine reports Every 1 for Special reports 10 1 Flight Path Turbulence Report Downlink Time Routine Reports (non-significant turbulence) Special Reports (significant turbulence) Page 15