ANALYSIS OF COAST-DOWN DATA TO ASSESS AERODYNAMIC DRAG REDUCTION ON FULL-SCALE TRACTOR-TRAILER TRUCKS IN WINDY ENVIRONMENTS
A data reduction procedure is presented and successfully used to analyze coastdown data obtained in a windy environment to provide a measure of the aerodynamic drag on a full-scale tractor-trailer combination as a function of the yaw angle of the vehicle. Comparison with wind tunnel measurements suggests that the wind-tunnel provides a reasonable simulation of the effects of winds on vehicle drag. The highest drag reductions that were measured in the presence of winds were obtained with a streamlined fairing/gap seal combination. /GMRL/
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Corporate Authors:
Society of Automotive Engineers (SAE)
400 Commonwealth Drive
Warrendale, PA United States 15096 -
Authors:
- Buckley Jr, F T
- Marks, C H
- Walston Jr, W H
- Publication Date: 1976-11
Media Info
- Pagination: 15 p.
Subject/Index Terms
- TRT Terms: Aerodynamics; Data reduction; Drag; Tractor trailer combinations; Wind tunnels; Yaw
- Subject Areas: Highways; Motor Carriers; Safety and Human Factors;
Filing Info
- Accession Number: 00152306
- Record Type: Publication
- Report/Paper Numbers: SAE 760850
- Files: TRIS
- Created Date: Jun 17 1977 12:00AM