1. 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

3. Test Aircraft
Falcon 20
Dash 8 B B B

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

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

6. Aircraft vs. IRFI

7. CRFI Table

8. IRFI Table

9. 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

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

12. 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

13. Fourteenth Annual NASA Tire/Runway Friction Workshop
WELKOM
VELKOMMEN
YOKOSO
BENVENUTO
WILLKOMMEN
WELCOME
Fourteenth Annual
NASA Tire/Runway Friction Workshop
May 14-18, 2007
NASA Wallops Flight Facility
Website:
VELKOMMEN
WELKOM
WELCOME
WILLKOMMEN
BENVENUTO

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