THE USE OF SMALL SCALE WIND TUNNEL DATA IN THE DESIGN OF CAB-OVER-ENGINE TRACTOR/TRAILER COMBINATIONS 790767
A critical assessment of the usefulness of small scale wind tunnel data in optimizing the design of heavy duty cab-over-engine tractor/trailer combinations is presented. The correct selection of cab leading edge radii has long been recognized as a dramatic means of reducing aerodynamic drag and hence fuel consumption. However, the validity of extrapolating small scale wind tunnel designs into full size vehicles has been a source of continuing controversy. Results of literature search and original wind tunnel studies lead to the conclusion that carefully conducted one-tenth scale wind tunnel investigations can be used to select accurate and somewhat conservative full-scale designs.
Citation: Kangas, T., "THE USE OF SMALL SCALE WIND TUNNEL DATA IN THE DESIGN OF CAB-OVER-ENGINE TRACTOR/TRAILER COMBINATIONS," SAE Technical Paper 790767, 1979, https://doi.org/10.4271/790767. Download Citation
