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Aerodynamic drag reduction tests on a full-scale tractor-trailer combination with several add-on devicesAerodynamic drag tests were performed on a conventional cab-over-engine tractor with a 45-foot trailer and five commercially available or potentially available add-on devices using the coast-down method. The tests ranged in velocity from approximately 30 miles per hour to 65 miles per hour and included some flow visualization. A smooth, level runway at Edwards Air Force Base was used for the tests, and deceleration measurements were taken with both accelerometers and stopwatches. An evaluation of the drag reduction results obtained with each of the five add-on devices is presented.
Document ID
19750004828
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Montoya, L. C. (NASA Flight Research Center Edwards, CA, United States)
Steers, L. L. (NASA Flight Research Center Edwards, CA, United States)
Date Acquired
September 3, 2013
Publication Date
December 1, 1974
Subject Category
Aerodynamics
Report/Patent Number
NASA-TM-X-56028
Meeting Information
Meeting: Reduction of Aerodynamic Drag of Trucks Conf.
Location: Pasadena, CA
Country: United States
Start Date: October 10, 1974
End Date: October 11, 1974
Accession Number
75N12900
Funding Number(s)
PROJECT: RTOP 770-18-10
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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