S
Stephen M. Walker
Researcher at Ames Research Center
Publications - 19
Citations - 365
Stephen M. Walker is an academic researcher from Ames Research Center. The author has contributed to research in topics: Drag & Wind tunnel. The author has an hindex of 10, co-authored 19 publications receiving 349 citations.
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An Experimental Study of the Ground Transportation System (Gts) Model in the NASA Ames 7 by 10-FT Wind Tunnel
Bruce L. Storms,James C. Ross,James T. Heineck,Stephen M. Walker,David M. Driver,Gregory G. Zilliac,Daniel P. Bencze +6 more
TL;DR: The 1/8-scale Ground Transportation System (GTS) model was studied experimentally in the NASA Ames 7- by 10-ft Wind Tunnel as discussed by the authors. But the results were limited to a single tractor-trailer with a cab-over-engine design.
Proceedings ArticleDOI
DOE's Effort to Reduce Truck Aerodynamic Drag-Joint Experiments and Computations Lead to Smart Design
R McCallen,Kambiz Salari,Jason M. Ortega,Lawrence J. DeChant,B. Hassan,Christopher J. Roy,W. D. Pointer,Fred Browand,Mustapha Hammache,T Hsu,Anthony Leonard,M Rubel,P Chatalain,Robert J. Englar,James C. Ross,D Satran,James T. Heineck,Stephen M. Walker,David M. Yaste,B Storms +19 more
TL;DR: In this article, the authors describe their objective and approach, provide an overview of their efforts and accomplishments, and discuss their future direction, as well as discuss the future direction of their work.
Proceedings ArticleDOI
A Study of Reynolds Number Effects and Drag-Reduction Concepts on a Generic Tractor-Trailer
Proceedings ArticleDOI
DOE's Effort to Reduce Truck Aerodynamic Drag Through Joint Experiments and Computations
R McCallen,Kambiz Salari,Jason M. Ortega,Paul J. Castellucci,John Paschkewitz,Craig Eastwood,Larry J. DeChant,B. Hassan,W. David Pointer,Fred Browand,Charles Radovich,Tai Merzel,Dennis Plocher,Anthony Leonard,Mike Rubel,James C. Ross,James T. Heineck,Stephen M. Walker,Bruce L. Storms,Christopher J. Roy,David L. Whitfield,Ramesh Pankajakshan,Lafayette K. Taylor,Kidambi Sreenivas,Robert J. Englar +24 more
TL;DR: In this paper, the goal is to reduce aerodynamic drag by 25% which would translate to 12% improved fuel economy or 4,200 million gal/year or 4% of the total US consumption of petroleum.
Journal ArticleDOI
Wake Vortex Alleviation Flow Field Studies
TL;DR: In this article, the wake-vortex-allevialion research was conducted in the far-field vortex wake of a generic wing-tail aircraft model, where the model was run in a water tow tank to generate a pair of unequal-strength counterrotating vortices on each side of centerline.