SURFACE PROFILE MEASUREMENTS OF RUNWAYS, TAXIWAYS AND UNDER- SHOOT AREAS AT HEATHROW AIRPORT

MEASUREMENTS OF SURFACE PROFILES OF RUNWAYS, TAXIWAYS AND UNDERSHOOT AREAS WERE MADE USING BOTH PHOTOGRAPHIC AND PROFILOMETER METHODS. BOTH SETS OF MEASUREMENTS WERE COMBINED TO GIVE A COMPOSITE PICTURE OF THE PROFILE. THE RESULTS WERE SUBSEQUENTLY PROCESSED WHEN AUTO-CORRELATION COEFFICIENTS WERE CALCULATED AND A FOURIER ANALYSIS WAS CARRIED OUT IN AN ATTEMPT TO ISOLATE DISCRETE WAVELENGTHS. THE RESULTS INDICATE THAT THERE IS POSSIBLY A DISCRETE WAVELENGTH COMPONENT OF THE PROFILE OF 20 TO 40 FT CORRESPONDING TO CONCRETE SECTIONS. A COMPONENT OF 200 FT WAVELENGTH EXISTS ALTHOUGH THERE IS NOT A VERY STRONG INDICATION OF THIS. THERE MAY ALSO BE A COMPONENT OF ABOUT 500 FT WAVELENGTH. AN ANALYSIS OF THE LEG DEFLECTION MEASUREMENTS OF A TRIDENT AIRCRAFT RUNNING OVER A SECTION OF RUNWAY WITH CALIBRATED PROFILE IS ALSO GIVEN. ACCURATE LONGITUDINAL PROFILES OF THE GRASS UNDERSHOOT AREAS OF RUNWAYS 28L AND 10L ARE ALSO PRESENTED. /RRL/A/

• Supplemental Notes:
  • 6 Pp, 8 Fig, 3 TAB, 1 REF
• Corporate Authors:

  Board of Trade, London /UK

  ,    
• Authors:
  • Williams, D J
  • BELCHER, B W
• Publication Date: 1968-4

Subject/Index Terms

• TRT Terms: Airport runways; Autocorrelation; Coefficients; Concrete; Fourier analysis; Photography; Profilometers; Surface course (Pavements); Taxiways; Wavelength
• Uncontrolled Terms: Longitudinal profile
• Old TRIS Terms: Photographic methods
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00206817
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Apr 27 1970 12:00AM