Browse Publications Technical Papers 2008-01-0472
2008-04-14

On-Road Investigation of a Vehicle's Longitudinal Response to Wind Gusts 2008-01-0472

The objective of this work is an attempt to investigate the longitudinal aerodynamic response of a vehicle to ambient wind. The natural wind environment is usually unsteady and causes therefore slight oscillations of the vehicle's velocity around its cruising speed. The additional force superposed to the steady drag caused by the smooth oncoming air flow is generated by ambient turbulence. For the on-road investigation of the vehicle's longitudinal response to the ambient turbulent flow field both vehicle velocity and relative airspeed in driving direction are recorded by independent data acquisition systems during a set of coastdowns. The deceleration data and the vehicle's response to the airspeed fluctuations are derived by numerical filtering techniques and differentiation of the motorcar's velocity-time history. The study results in a frequency-dependent response function.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

The Passenger Vehicle Wake Under the Influence of Upstream Turbulence

2003-01-0650

View Details

TECHNICAL PAPER

A Two-Measurement Correction for the Effects of a Pressure Gradient on Automotive, Open-Jet, Wind Tunnel Measurements

2006-01-0568

View Details

TECHNICAL PAPER

On-Road Aerodynamic Drag Analysis by Simultaneous Linear Inversion of the Equation of Motion

2005-01-1456

View Details

X