The Challenge of Standardizing Aerodynamic Testing
May 2015, TruckingInfo.com - Feature
by Jim Park, Equipment Editor
The Challenge of Standardizing Aerodynamic Testing - Article - TruckingInfo.com
Quote:
|
In a coast-down test, the test truck is run at a predetermined speed, usually 65 mph, and on a straight, flat section of track, the truck is placed in neutral and allowed to coast down to some predetermined speed. Measurements are taken to determine the relative impact of rolling resistance and mechanical drag (usually constant) and aerodynamic drag (variable with speed). The test requires 20-30 runs and each is measured, compared and averaged along a curve.
|
