Drag reduction of a tractor trailer using guide vanes

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The Clarkson University patent solves the following problem:

The present invention relates to a vehicle with a gear mounted thereon for reducing aerodynamic drag and, particularly, to a guide vane device with an airfoil cross-section mounted on the aft part of a a tractor trailer.

Our analysis of this patent is as follows:

Clarkson University’s patent US 9139238 B2 deals with Drag reduction of a tractor trailer using guide vanes.
The present invention relates to a vehicle with a gear mounted thereon for reducing aerodynamic drag and, particularly, to a guide vane device with an airfoil cross-section mounted on the aft part of a a tractor trailer.

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