DESIGN OF APPARATUS FOR THE DETERMINATION OF AERODYNAMIC DRAG COEFFICIENT OF AUTOMOBILES
There are three major components of the total resistance to motion of road vehicles: aerodynamic drag, rolling resistance in the form of tire friction on road surfaces and mechanical resistance in the form of bearing friction. Apparatus constructed at the naval Postgraduate School, Monterey, CA, employs the measurement of total drag (aerodynamic drag + rolling resistance drag + mechanical drag) by means of coastdown testing and the measurement of rolling resistance and mechanical drag in an aerodynamic shielding trailer to determine the aerodynamic drag. Data acquisition and reduction is carried out with portable dedicated minicomputer system. The apparatus is designed to yield drag coefficients with an estimated uncertainty of about one percent.
Naval Postgraduate School1 University Circle
Monterey, CA United States 93943
- Gritte, B R
- Publication Date: 1984-6
- Pagination: 80 p.
- TRT Terms: Aerodynamics; Automobiles; Coefficients; Design; Drag; Measuring instruments; Microcomputers; Rolling resistance
- Subject Areas: Design; Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;
- Accession Number: 00450196
- Record Type: Publication
- Files: TRIS
- Created Date: Aug 27 2004 8:57PM