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FAA-NASA Airborne Turbulence Radar Certification Working Group November 3-4, 2004 NASA Langley

FAA-NASA Airborne Turbulence Radar Certification Working Group November 3-4, 2004 NASA Langley. NOAA Photo. Topics. Collins Turbulence Detection Background Certification History Recent Activities of NASA Turbulence Team Collins Direction FAA Role.

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FAA-NASA Airborne Turbulence Radar Certification Working Group November 3-4, 2004 NASA Langley

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  1. FAA-NASA Airborne Turbulence Radar Certification Working Group November 3-4, 2004 NASA Langley Rockwell Collins Proprietary NOAA Photo

  2. Topics • Collins Turbulence Detection Background • Certification History • Recent Activities of NASA Turbulence Team • Collins Direction • FAA Role Rockwell Collins Proprietary

  3. Collins Turbulence Detection Background • Turbulence Detection Developed for WXR-700 Product Family in Early 1980’s • First Delivery March 1983 • Technology Based on 1970’s Flight Data that Correlated Aircraft Turbulence with Radar Measured Spectral Width • Rough Correlation of Spectral Width with Turbulence • 5 m/s roughly equates to 0.5g Rockwell Collins Proprietary

  4. Certification History • No Formal Performance Requirements Available • Validation Testing of Turbulence Functions • Side-by-Side Comparison with Collins Radar and NSSL Turbulence Detecting Ground Radar • FAA B727 Flight Tests Showed Correlation Between Airborne Collins Radar and NSSL Ground Based Radar Radar • No In-situ Turbulence Data Collected • Human Factors Evaluation of Magenta Turbulence Display • Certified on “Non-Interference” Basis • Limitations on Crew Utilization of Turbulence Information • Control Panel Button Allows Turbulence Display to be Shut Off Rockwell Collins Proprietary

  5. NASA Turbulence Team • NASA Turbulence Team • Developed Scientific Basis for Turbulence Detection • Developed Tools for Turbulence Analysis and Evaluation • Developed Several Improved Algorithms for Turbulence Detection • Developed Algorithm for Aircraft Response Prediction • Developed Display Concepts • Team Laid Foundation for “Intended Function” Turbulence Certification • “Intended Function” Certification will Allow Airlines and Crews to Utilize Turbulence Detection Capability in Procedures Rockwell Collins Proprietary

  6. Collins Direction • Tradeoff Between Short Range Alerting System and Long Range Advisory System (Presented in December 3-4, 2003 Turbulence Workshop #6). • Technical • Operational • Cockpit Interface • Cost • Retrofit and Forward Fit Commonality • Chose to Pursue Long Range Advisory System • Advanced Algorithms • 2 Level Display Presentation • Aircraft G-Load Prediction Rockwell Collins Proprietary

  7. FAA Role • FAA Airborne Turbulence Certification Goal: Provide Basis for “Intended Function” Turbulence Certification • Recommendations for “Intended Function” Certification • Minimum Performance Requirements for Turbulence Detection Process Guidance for Displayed Outputs • Spectral Width • Predicted Aircraft G-Loads • 2 Level Display • Operational Utilization of Displayed Outputs Rockwell Collins Proprietary

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