Deployable fairing for use with vehicles
Systems and methods provide a deployable fairing system to a tractor trailer. The deployable fairing system includes an actuator used to extend the deployable fairing from an unextended configuration to an extended configuration to occupy a portion of a gap area that exists between a tractor and an attached trailer. The deployable fairing includes deployable upper and/or lower horizontal assemblies that are pivotally coupled to a frame attached to the tractor/cab, and two side panels that are pivotally coupled to one or both of the upper and lower horizontal assemblies. The deployable upper and lower horizontal assemblies and the two side panels fold in on one another along multiple hinged axes in the unextended configuration, and extend rearward from the top and sides of the tractor in the extended configuration to cover a portion of the gap. The fairing may advantageously flair from front to the rear.
1. A fairing structure for use with vehicles, the fairing structure comprising:
a deployable upper panel assembly comprising a deployable upper panel, a first upper wing panel and at least a second upper wing panel, the first upper wing panel and the second upper wing panel each pivotally coupled to the deployable upper panel, the deployable upper panel pivotal about a horizontal axis to move the deployable upper panel assembly between a retracted configuration of the fairing structure and a deployed configuration of the fairing structure, wherein, in the deployed configuration, the deployable upper panel extends rearwardly at a positive slope from the back of a cab of a tractor and the first and the second deployable side panels extend rearwardly at a positive slope from the back of the cab of the tractor;
at least a first deployable side panel having a proximal edge, the first deployable side panel coupled to translate and pivot in moving between the retracted configuration of the fairing structure and the deployed configuration of the fairing structure; and
at least a second deployable side panel having a proximal edge, the second deployable side panel coupled to translate and pivot in moving between the retracted configuration of the fairing structure and the deployed configuration of the fairing structure.
2. The fairing structure of claim 1 wherein, in the deployed configuration, the first deployable side panel and the second deployable side panel each flare outwardly in a direction going from a front of the fairing structure toward a rear of the fairing structure.
3. The fairing structure of claim 1 wherein the first deployable side panel is pivotally coupled to the deployable upper panel assembly and the second deployable side panel is pivotally coupled to the deployable upper panel assembly.
4. The fairing structure of claim 1 wherein the first deployable side panel is pivotable about an axis that extends parallel to the proximal edge of the first deployable side panel and the second deployable side panel is pivotable about an axis that extends parallel to the proximal edge of the second deployable side panel.
5. The fairing structure of claim 4 wherein the axis that the first deployable side panel is pivotable about is spaced from the proximal edge of the first deployable side panel at least in the deployed configuration of the fairing structure and the axis that the second deployable side panel is pivotable about is spaced from the proximal edge of the second deployable side panel at least in the deployed configuration of the fairing structure.
6. The fairing structure of claim 1 wherein the first deployable side panel is pivotable about an axis that is perpendicular to the horizontal axis and the second deployable side panel is pivotable about an axis that is perpendicular to the horizontal axis.
7. The fairing structure of claim 1 wherein the first deployable side panel is coupled to translate and pivot without any hinge extending along the proximal edge of the first deployable side panel and the second deployable side panel is coupled to translate and pivot without any hinge extending along the proximal edge of the second deployable side panel.
8. The fairing structure of claim 1 wherein the deployable upper panel is a single trapezoidal panel with a trapezoidal profile.
9. The fairing structure of claim 1 , further including:
a static upper panel that has a D-shaped profile.
10. The fairing structure of claim 9 wherein the static upper panel extends horizontally from a back of the cab of the tractor with a major curved edge of the D-shaped profile proximate the back of the cab of the tractor.
11. The fairing structure of claim 10 wherein the first deployable side panel and the second deployable side panel each extend vertically with respect to the cab of the tractor.
12. A fairing structure for use with vehicles having cabs with backs, the fairing structure comprising:
a deployable upper panel assembly comprising at a deployable upper panel, a first upper wing panel and at least a second upper wing panel, the first upper wing panel and the second upper wing panel each pivotally coupled to the deployable upper panel, the deployable upper panel having a leading edge, a trailing edge, and pivotal about a horizontal axis to move between a retracted configuration of the fairing structure in which the deployable upper panel extends rearwardly from a back of the cab of the vehicle tilted relatively downwards with respect to a horizontal plane that extends through the horizontal axis and a deployed configuration of the fairing structure in which the deployable upper panel extends rearwardly from the back of the cab of the vehicle tilted relatively upwards with respect to the horizontal plane that extends through the horizontal axis.
13. The fairing structure of claim 12 , further comprising;
at least a first deployable side panel, the first deployable side panel coupled to translate and pivot in moving between the retracted configuration of the fairing structure and the deployed configuration of the fairing structure; and
at least a second deployable side panel, the second deployable side panel coupled to translate and pivot in moving between the retracted configuration of the fairing structure and the deployed configuration of the fairing structure.
14. The fairing structure of claim 13 wherein, in the deployed configuration, the first deployable side panel and the second deployable side panel are each tilted outwardly in a direction going from a front of the fairing structure toward a rear of the fairing structure.
15. The fairing structure of claim 13 , further comprising:
a single actuator, the single actuator coupled to the deployable upper panel and operable to selectively move the deployable upper panel between the retracted and the deployed configurations.
16. The fairing structure of claim 13 , further comprising:
a first actuator, the first actuator coupled to the first deployable side panel and operable to selectively move the first deployable side panel between the retracted and the deployed configurations; and
a second actuator, the second actuator coupled to the second deployable side panel and operable to selectively move the second deployable side panel between the retracted and the deployed configurations.
17. The fairing structure of claim 16 , further comprising:
a third actuator, the third actuator coupled to the deployable upper panel and operable to selectively move the deployable upper panel between the retracted and the deployed configurations.
18. The fairing structure of claim 13 , further comprising:
a first hinge comprising a base and an arm that is rotatably coupled to the base to pivot about a vertical axis with respect to the base between a retracted position and a deployed position, the first deployable side panel attached to the arm of the first hinge for movement therewith; and
a second hinge comprising a base and an arm that is rotatably coupled to the base to pivot about a vertical axis with respect to the base between a retracted position and a deployed position, the second deployable side panel attached to the arm of the second hinge for movement therewith.
19. The fairing structure of claim 18 , further comprising:
at least a third hinge having a horizontal axis of rotation that is perpendicular to vertical axes of rotation of the fist and the second hinges, the third hinge coupled to the deployable upper panel.
20. The fairing structure of claim 12 , further comprising:
a single actuator, the single actuator coupled to the deployable upper panel and operable to selectively move the deployable upper panel between the retracted and the deployed configurations.