This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Advanced Aerodynamic Devices to Improve the Performance, Economics, Handling and Safety of Heavy Vehicles
Technical Paper
2001-01-2072
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Research is being conducted at the Georgia Tech Research Institute (GTRI) to develop advanced aerodynamic devices to improve the performance, economics, stability, handling and safety of operation of Heavy Vehicles by using previously-developed and flight-tested pneumatic (blown) aircraft technology. Recent wind-tunnel investigations of a generic Heavy Vehicle model with blowing slots on both the leading and trailing edges of the trailer have been conducted under contract to the DOE Office of Heavy Vehicle Technologies. These experimental results show overall aerodynamic drag reductions on the Pneumatic Heavy Vehicle of 50% using only 1 psig blowing pressure in the plenums, and over 80% drag reductions if additional blowing air were available. Additionally, an increase in drag force for braking was confirmed by blowing different slots. Lift coefficient was increased for rolling resistance reduction by blowing only the top slot, while downforce was produced for traction increase by blowing only the bottom. Also, side force and yawing moment were generated on either side of the vehicle, and directional stability was restored by blowing the appropriate side slot. These experimental results and the predicted full-scale payoffs are presented in this paper, as is a discussion of additional applications to conventional commercial autos, buses, motor homes, and Sport Utility Vehicles.
Authors
Topic
Citation
Englar, R., "Advanced Aerodynamic Devices to Improve the Performance, Economics, Handling and Safety of Heavy Vehicles," SAE Technical Paper 2001-01-2072, 2001, https://doi.org/10.4271/2001-01-2072.Also In
References
- Hucho, Wolf-Heinrich “Aerodynamics of Road Vehicles, from Fluid Mechanics to Vehicle Engineering,” Butterworth-Heinemann London 1990
- Suski, Victor “Improved Heavy Truck Aerodynamics, Statement of Need,” American Trucking Associations Alexandria, VA 1995
- Englar, R. J. Smith M. J. Niebur C. S. Gregory S. D. “Development of Pneumatic Aerodynamic Concepts for Control of Lift, Drag, and Moments plus Lateral/Directional Stability of Automotive Vehicles,” SAE Paper 960673 Feb. 26-29 1996 SAE SP-1145 “Vehicle Aerodynamics: Wind Tunnels, CFD, Aeroacoustics, and Ground Transportation Systems,” 27 38
- U. S. Department of Energy, Oak Ridge National Laboratory “Development and Evaluation of Pneumatic Aerodynamic Devices to Improve the Performance, Economics, Stability and Safety of Heavy Vehicles” December 1 1998 December 31 2001
- Englar, Robert J. “Development of Pneumatic Aerodynamic Devices to Improve the Performance, Economy and Safety of Heavy Vehicles,” SAE Paper 2000-01-2208 June 20 2000
- Englar, Robert J. “Development of the A-6/Circulation Control Wing Flight Demonstrator Aircraft,” DTNSRDC Report ASED-274 January 1979 Englar, R. J et al “Design of the Circulation Control Wing STOL Demonstrator Aircraft,” AIAA paper No. 79-1842 August 1979
- Englar, R. J. Applegate C. A. “Circulation Control-A Bibliography of DTNSRDC Research and Selected Outside References (Jan 1969 to Dec 1983),” David Taylor Naval Ship Research and Development Center Report 84/052 Carderock, MD Sept. 1984
- Englar, R. J. “Circulation Control Aerodynamics: Blown Force and Moment Augmentation and Modification; Past, Present and Future,” AIAA Paper 2000-2541 June 2000
- Gutierrez, W. T. Hassan B. Croll R.H. Rutledge W.H. “Aerodynamics Overview of the Ground Transportation Systems (GTS) Project for Heavy Vehicle Drag Reduction,” SAE Paper 960906 February 1996
- SAE Information Report J2085 “Aerodynamic Testing of Road Vehicles; Closed-Test-Section Wind Tunnel Boundary Interference,” August 1993 “Closed-Test-Section Wind Tunnel Blockage Corrections for Road Vehicles,” February 1996
- Englar, Robert J. “Development of Pneumatic Test Techniques for Subsonic High-Lift and In-Ground-Effect Wind Tunnel Investigations,” AGARD 73rd Fluid Dynamics Symposium Brussels, Belgium October 4-7 1993
- “Transportation Energy Data Book: Edition 19,” September 1999
- “EIA Annual Energy Outlook 2000,” 2000 December 1999