Land vehicles: bodies and tops – Bodies – With distinct wind deflector
Reexamination Certificate
2005-08-09
2005-08-09
Patel, Kiran B. (Department: 3612)
Land vehicles: bodies and tops
Bodies
With distinct wind deflector
C296S180100, C244S199100
Reexamination Certificate
active
06926345
ABSTRACT:
An aerodynamic base drag reduction apparatus and method for bluff bodies, such as tractor-trailer trucks, utilizing a pair of lift surfaces extending to lift surface tips and located alongside the bluff body such as on opposing left and right side surfaces. In a flowstream substantially parallel to the longitudinal centerline of the bluff body, the pair of lift surfaces generate a pair of counter-rotating trailing vortices which confluence together in the wake of the bluff body in a direction orthogonal to the flowstream. The confluence draws or otherwise turns the flowstream, such as the flowstream passing over a top surface of the bluff body, in and around behind a trailing end of the bluff body to raise the pressure on a base surface at the trailing end and thereby reduce the aerodynamic base drag.
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Ortega Jason M.
Salari Kambiz
Patel Kiran B.
Scott Eddie E.
Tak James S.
The Regents of the University of California
Thompson Alan H.
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