Drag Reduction of a Modern Straight Truck

Event
Commercial Vehicle Engineering Congress
Authors Abstract
Content
A wind tunnel test program was conducted at the Langley Full Scale Tunnel (LFST) to evaluate the performance of five passive drag reduction configurations on a modern straight truck at full scale. Configurations were tested in a build-up fashion with results representing a cumulative effect. Tested configurations include a front valance, a front box fairing, a boat-tail, an ideal side-skirt, and a practical side-skirt. Configurations were evaluated over a nominal 9 degree yaw sweep to establish wind averaged drag coefficients using SAE J1252. Genuine replicate yaw sweeps were used in an uncertainty analysis. Results show up to 28% improvement in wind-averaged drag coefficient and that significant gains can be made in straight truck fuel economy, even at non-highway speeds.
Meta TagsDetails
DOI
https://doi.org/10.4271/2011-01-2283
Pages
7
Citation
Landman, D., Cragun, M., McCormick, M., and Wood, R., "Drag Reduction of a Modern Straight Truck," Commercial Vehicles 4(1):256-262, 2011, https://doi.org/10.4271/2011-01-2283.
Additional Details
Publisher
Published
Sep 13, 2011
Product Code
2011-01-2283
Content Type
Journal Article
Language
English