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Checking the Calculations Modelling of the Time-Level-Diagram

R. R. U. Flightpath. Checking the Calculations Modelling of the Time-Level-Diagram. R. Shield. U. Checking the Calculations Modelling of the Time-Level- Diagram. Departure of a Tiger F-5 with PC. Calculation Measurement. R. Shield. U.

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Checking the Calculations Modelling of the Time-Level-Diagram

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  1. R R U Flightpath Checking the CalculationsModelling of the Time-Level-Diagram

  2. R Shield U Checking the CalculationsModelling of the Time-Level- Diagram Departure of a Tiger F-5 with PC Calculation Measurement

  3. R Shield U Checking the CalculationsModelling of the Time-Level- Diagram Departure of a Mirage with PC Calculation Measurement

  4. R Shield U Checking the CalculationsModelling of the Time-Level- Diagram Departure of a Hornet F/A-18 Calculation Measurement

  5. R U Checking the CalculationsModelling of the Time-Level- Diagram Departure of a Hornet F/A-18 with PC Calculation Measurement

  6. No systematic deviations observed! Checking the Calculations: Single flights

  7. Runway-System in Zürich Kloten Monitoring-Stations Inhabited regions Flightpaths SID-Route E16 Flightpaths SID-Route F16 C 6 A B 7 Checking the Calculations

  8. Flight direction SEL LA,max Checking the Calculations: Takeoffs of B747-300 Flightpath of a B747-300 (Takeoff Runway 16 in Zürich Kloten) C 6 A B 7

  9. SEL LA,max Checking the Calculations: Takeoffs of MD11 Flightpath of a MD11 (Takeoff Runway 16 in Zürich Kloten) C 6 A B 7

  10. C 6 A B 7 Checking the Calculations: LA,max

  11. C 6 A B 7 Checking the Calculations: SEL

  12. 6 7 Checking the Calculation FLULA2 yields a good agreement with mea-surements (deviation of less than 1 dB) in pre-dicting the noise impact at the monitoring stations 6 and 7 in Zürich Kloten. Nevertheless, the question remains open as to whether this is the real impact!

  13. Checking the Calculations [Data in dB(A)] • No systematic deviations observed. • On the average, the difference bet-ween measurement and calculation lies in the order of 1.0 to 1.5 dB(A).

  14. Conclusions FLULA2 reproduces the aircraft noise impact very well! But: • Louder types are overestimated, quieter types underestimated! • New measurement campaigns to enhance and improve the source data. • Errors in radar data! • Errors in the monitoring measurements!

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