Record Display for the EPA National Library Catalog

RECORD NUMBER: 4 OF 19

OLS Field Name OLS Field Data
Main Title Estimation of Vehicle Aerodynamic Drag.
Author Pershing, Bernard ; Masaki., Mamoru ;
CORP Author Aerospace Corp., El Segundo, Calif.;Environmental Protection Agency, Ann Arbor, Mich. Emission Control Technology Div.
Year Published 1976
Report Number ATR-77(7359)-1; EPA-68-01-0417; EPA/460/3-76/025;
Stock Number PB-275 948
Additional Subjects Motor vehicles ; Aerodynamic drag ; Air resistance ; Wind tunnel tests ; Automobile bodies ; Streamlining ; Drag reduction
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-275 948 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 57p
Abstract
A simple procedure was developed for the estimation of road vehicle aerodynamic drag based on easily quantifiable vehicle shape parameters. The procedure is applicable to passenger vehicles, station wagons, and vans and is based on a 'drag build-up' method which includes the effects of the basic body shape, underpanning, and cooling drag. Not included are effects of lift, sidewind, ground clearance, and certain shape details. The limitations of the procedure are discussed and improvements and areas requiring further study are identified. In a related activity, a brief investigation was made of possible techniques for determining vehicle frontal area from photographs of cars. Planimeter measurements of frontal area were made from photographic enlargements of approximately 80 cars. The results of this effort are included as an appendix. Bibliographies on road vehicle aerodynamic drag and on wind tunnel and full-scale road testing techniques are also appended.