Apparatus for decreasing aerodynamic drag, improving stability, and reducing road spray of a transport vehicle
First Claim
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1. An apparatus for decreasing aerodynamic drag, improving stability, and decreasing road spray of a transport vehicle, comprising:
- an underbody fairing for mounting to a bottom portion of a transport trailer forward of the rear wheel assembly, said underbody fairing comprising a substantially parabolic elongated panel having a first edge portion, a second edge portion, a first lateral portion and a second lateral portion, and a vertex portion, said vertex portion being substantially arcuate;
wherein the shortest distance between (i) the intersection of said vertex portion with said first lateral portion and (ii) the intersection of said vertex portion with said second lateral portion is between twenty percent and fifty percent of the shortest distance between (i) said first edge portion and (ii) said second edge portion;
whereby said underbody fairing diverts airflow around the rear wheel assembly of the transport vehicle while facilitating the laminar flow of crosswind beneath the transport vehicle, thereby decreasing aerodynamic drag, improving stability, and decreasing road spray of the transport vehicle.
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Abstract
The invention relates to an apparatus for decreasing aerodynamic drag, improving stability, and reducing road spray of a transport vehicle. The apparatus comprises an underbody fairing comprising a substantially parabolic elongated panel. The underbody fairing is strategically positioned beneath the transport vehicle and forward of the rear wheel assembly to deflect air around the rear wheel assembly while also facilitating a laminar airflow moving laterally beneath the transport vehicle.
57 Citations
28 Claims
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1. An apparatus for decreasing aerodynamic drag, improving stability, and decreasing road spray of a transport vehicle, comprising:
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an underbody fairing for mounting to a bottom portion of a transport trailer forward of the rear wheel assembly, said underbody fairing comprising a substantially parabolic elongated panel having a first edge portion, a second edge portion, a first lateral portion and a second lateral portion, and a vertex portion, said vertex portion being substantially arcuate; wherein the shortest distance between (i) the intersection of said vertex portion with said first lateral portion and (ii) the intersection of said vertex portion with said second lateral portion is between twenty percent and fifty percent of the shortest distance between (i) said first edge portion and (ii) said second edge portion; whereby said underbody fairing diverts airflow around the rear wheel assembly of the transport vehicle while facilitating the laminar flow of crosswind beneath the transport vehicle, thereby decreasing aerodynamic drag, improving stability, and decreasing road spray of the transport vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An apparatus for decreasing aerodynamic drag, improving stability, and decreasing road spray of a transport vehicle, comprising:
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an underbody fairing for mounting to a bottom portion of a transport trailer forward of the rear wheel assembly, said underbody fairing comprising a substantially parabolic elongated panel having a first edge portion, a second edge portion, a first lateral portion and a second lateral portion, and a vertex portion, said vertex portion being substantially arcuate, the forwardmost 90 degrees of arc of the curve of said vertex having a radius that is equal to between 5 percent and 25 percent of the shortest distance between the first edge portion and the second edge portion; whereby said underbody fairing diverts airflow around the rear wheel assembly of the transport vehicle while facilitating the laminar flow of crosswind beneath the transport vehicle, thereby decreasing aerodynamic drag, improving stability, and decreasing road spray of the transport vehicle.
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27. An apparatus for decreasing aerodynamic drag, improving stability, and decreasing road spray of a transport vehicle, comprising:
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an underbody fairing for mounting to a bottom portion of a transport trailer forward of the rear wheel assembly, said underbody fairing comprising a substantially parabolic elongated panel having a first edge portion, a second edge portion, a first lateral portion and a second lateral portion, and a vertex portion; wherein said substantially parabolic elongated panel has a substantially resilient upper portion. - View Dependent Claims (28)
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Specification