TRACTION OF AN AIRCRAFT TIRE ON GROOVED AND POROUS ASPHALTIC CONCRETE
The Federal Aviation Administration is engaged in an experimental program to determine the effectiveness of various surface treatments to eliminate aircraft hydroplaning when landing on wet runways. The surface treatments included saw-cut grooves, reflexpercussive grooves, and porous friction overlays in the asphaltic concrete runways. Experiments were conducted on a 1.25-mile long track that included a 300-ft test bed containing concrete with 40-ft sections of various surface treatments. Test speeds between 70 and 150 knots were achieved by the use of a jet-powered pusher car that also supported a dynamometer and tire-wheel assembly. The test tire was similar to one that is used on a Boeing-727 aircraft. The results showed that the porous friction overlay, the reflex-percussive grooves, and the saw-cut grooves of various spacing provided similar friction levels under wetness conditions that were either "wet" or "flooded." However, for the "puddled" condition (intermediate wetness between wet and flooded), the saw-cut grooves spaced at 1.25 in. provided the maximum improvement in friction level over a nongrooved or nontreated surface. Thus, although hydroplaning is delayed to a speed higher than 150 knots for all the surface treatments included in the program, the selection of a particular type of surface treatment can be based on whether the rainfall intensities in a region create predominantly wet, puddled, or flooded water conditions on the runway.
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Supplemental Notes:
- Publication of this paper sponsored by Committee on Surface Properties-Vehicle Interaction. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Agrawal, Sudhir K
- Daiutolo, Hector
- Publication Date: 1984
Media Info
- Media Type: Print
- Features: Figures; Photos; References; Tables;
- Pagination: pp 15-25
- Monograph Title: SURFACE PROPERTIES-VEHICLE INTERACTION
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Serial:
- Transportation Research Record
- Issue Number: 1000
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Aircraft; Asphalt concrete; Hydroplaning; Pavement grooving; Pavements; Porous materials; Porous pavements; Prevention; Rainfall; Tires; Traction
- Uncontrolled Terms: Rainfall intensity
- Old TRIS Terms: Grooves
- Subject Areas: Aviation; Highways; Pavements; Security and Emergencies; Vehicles and Equipment; I23: Properties of Road Surfaces;
Filing Info
- Accession Number: 00450719
- Record Type: Publication
- ISBN: 030903809X
- Report/Paper Numbers: HS-039 021
- Files: HSL, TRIS, TRB
- Created Date: Dec 31 1985 12:00AM