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Runway Friction Measurement

Runway Friction Measurement. By Thomas J. Yager NASA Langley Research Center Presented at FAA/Aviation Industry Workshop on Runway Condition Determination, Reporting and Report Dissemination FAA Headquarters; Washington DC August 7-8, 2006. Test Aircraft. Falcon 20. Dash 8. B727-100.

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Runway Friction Measurement

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  1. Runway Friction Measurement ByThomas J. YagerNASA Langley Research CenterPresented at FAA/Aviation Industry Workshop onRunway Condition Determination, Reporting and Report DisseminationFAA Headquarters; Washington DCAugust 7-8, 2006

  2. Test Aircraft Falcon 20 Dash 8 B727-100 B737-100 B757-100

  3. Ground Test Vehicles Diagonal Braked Vehicle Electronic Recording Decelerometer Vehicle Instrumented Tire Test Vehicle Runway Friction Tester Airport Surface Friction Tester Surface Friction Tester

  4. Ground Test Trailers IMAG Variable/Fixed Slip GripTester Fixed Slip Runar Variable/Fixed Slip BV-11 Skiddometer E-274 Skid Trailer

  5. Aircraft vs. IRFI

  6. CRFI Table

  7. IRFI Table

  8. Joint Program Summary • In nearly 10 years of the joint program, tests have involved • 10 aircraft • 49 ground vehicles • 10 test sites • 450 individuals representing over 65 organizations from 16 different countries have participated • The Canadian and the International Runway Friction Indices have been established

  9. Friction Measurement Variables • Operator • Equipment calibration & maintenance • Test procedure • Runway conditions • Braking methods • Compliance to existing standards

  10. Future Activities and Recommendations • Prepare and publish Joint Program final report and recommendations • Involve other organizations in ongoing research investigations, e.g. collect aircraft/ground vehicle friction data at airport in Traverse City, MI • Solicit more government/industry support and funding to maintain availability of NASA B-757 test aircraft • Establish calibration centers for friction measuring equipment • Encourage ICAO to form a runway friction study group • Perform EMAS study at NASA Langley’s ALDF test track • Conduct NASA’s 14th annual workshop, May 14-18, 2007

  11. WELKOM VELKOMMEN YOKOSO BENVENUTO WILLKOMMEN WELCOME Fourteenth Annual NASA Tire/Runway Friction Workshop May 14-18, 2007 NASA Wallops Flight Facility Website: http://runfric.larc.nasa.gov WELKOM VELKOMMEN WILLKOMMEN WELCOME BENVENUTO

  12. Test Site 2 Taxiway 4/22 “ECHO” R/W 4/22 Not to scale 300’ 222’ 300’ 300’ R-1 R-2 R-3 10’ LS1 M1 Echo 3 300’ 300’ 300’ EK3 EK4 RS4 Echo 2 EK1 EK2 Echo 1 75’ 10’ MS/0 Asphalt Surface 10’ MS/1 48’ 156’ 909’ MS/2 10’ 4’ P-1 P L MS/3 10’ Echo 4 R-5 300’ N159 Ramp N159 Ramp

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