Deployable fairing for use with vehicles
Systems and methods are disclosed for providing 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 system for use with vehicles, the fairing system comprising:
a deployable fairing structure;
at least one actuator coupled to at least a portion of the deployable fairing structure and operable to move the fairing structure between a retracted configuration of the deployable fairing structure and a deployed configuration of the deployable fairing structure; and
a controller coupled to control the at least one actuator, and to cause the at least one actuator to deploy and retract the deployable fairing structure, wherein:
the fairing structure comprises:
a deployable upper panel assembly, the deployable upper panel assembly moveable between the retracted configuration of the deployable fairing structure and the deployed configuration of the deployable fairing structure;
at least a first deployable side panel coupled to at least one portion of the deployable upper panel assembly, the first deployable side panel moveable between the retracted configuration of the deployable fairing structure and the deployed configuration of the deployable fairing structure; and
at least a second deployable side panel coupled to at least one portion of the deployable upper panel assembly, the second deployable side panel moveable between the retracted configuration of the deployable fairing structure and the deployed configuration of the deployable fairing structure, and
the fairing structure defaults to the retracted configuration of the deployable fairing structure in response to any one, more or all of: a power loss to the deployable fairing, a manual switch is positioned in an off position, the deployable fairing cannot receive data from a vehicle computer, a reading from a temperature sensor that indicates that an outside temperature is above an upper temperature threshold or below a lower temperature threshold, a reading from a wind sensor that indicates that a speed of a cross wind exceeds a cross wind threshold, a reading from a speed sensor that is below a speed threshold, or a stall condition in which the actuator is unable to move the deployable fairing to the deployed position.
2. The fairing system of claim 1 wherein the deployable upper panel assembly comprises 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 the retracted configuration of the deployable fairing structure and a deployed configuration of the deployable fairing structure.
3. The fairing system 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 system of claim 1 wherein the first deployable side panel has a proximal edge, the at least a second deployable side panel has a proximal edge, 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 system 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 system of claim 1 wherein the first deployable side panel is coupled to pivot without any hinge extending along a proximal edge of the first deployable side panel and the second deployable side panel is coupled to pivot without any hinge extending along a proximal edge of the second deployable side panel.
7. The fairing system of claim 1 wherein the deployable upper panel assembly is attached to a back of a cab of a tractor.
8. The fairing system of claim 1 wherein, in the retracted configuration, the deployable upper panel assembly extends downwardly from a back of a cab of a tractor.
9. The fairing system of claim 1 wherein, in the deployed configuration, the deployable upper panel assembly extends rearwardly at a positive slope from a back of a cab of a tractor.
10. The fairing system of claim 1 , wherein the at least one actuator is physically coupled to the deployable upper panel assembly to pivot at least a portion of the deployable upper panel assembly about a horizontal axis between the retracted and the deployed configurations of the deployable fairing structure.
11. The fairing system of claim 10 wherein the actuator is a pneumatic linear actuator, and further comprising:
a valve physically coupled to the actuator and biased to release air from under pressure from the actuator and to cause the deployable fairing to be in the retracted configuration in response to any one, more or all of: a power loss to the deployable fairing, a manual switch is positioned in an off position, the deployable fairing cannot receive data from a vehicle computer, a reading from a temperature sensor that indicates that an outside temperature is above an upper temperature threshold or below a lower temperature threshold, a reading from a wind sensor that indicates that a speed of a cross wind exceeds a cross wind threshold, a reading from a speed sensor that is below a speed threshold, or a stall condition in which the actuator is unable to move the deployable fairing to the deployed position.
12. The fairing system of claim 1 , further comprising:
a positional sensor to provide position information related to a position of at least one of the deployable upper panel assembly, the first deployable side panel, and the second deployable side panel,
wherein the positional information is transmitted to a processor which uses the positional information to determine if an error condition exists, and wherein
the fairing structure transitions to the retracted configuration in an event of an error condition.
13. The fairing system of claim 12 wherein the processor determines that the error condition exists in response to the positional indicating that the deployable fairing structure did not transition from the retracted configuration to the deployed configuration within an allotted period of time.
14. A method of operation in a fairing system for use with vehicles, the fairing system comprising: a deployable fairing structure; at least one actuator coupled to at least a portion of the deployable fairing structure and operable to move the fairing structure between a retracted configuration of the deployable fairing structure and a deployed configuration of the deployable fairing structure; and a controller coupled to control the at least one actuator, and to cause the at least one actuator to deploy and retract the deployable fairing structure, the method comprising:
causing the actuator to move the deployable fairing structure between the retracted configuration of the deployable fairing structure and the deployed configuration of the deployable fairing structure; and
defaulting the deployable fairing structure to the retracted configuration of the deployable fairing structure in response to any of: a power loss to the deployable fairing, a manual switch is positioned in an off position, the deployable fairing cannot receive data from a vehicle computer, a reading from a temperature sensor that indicates that an outside temperature is above an upper temperature threshold or below a lower temperature threshold, a reading from a wind sensor that indicates that a speed of a cross wind exceeds a cross wind threshold, a reading from a speed sensor that is below a speed threshold, or a stall condition in which the actuator is unable to move the deployable fairing to the deployed position.
15. The method of claim 14 wherein the deployable fairing structure comprise a deployable upper panel assembly, the 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 the retracted configuration of the deployable fairing structure and the deployed configuration of the deployable fairing structure, and causing the actuator to move the deployable fairing structure between the retracted configuration of the deployable fairing structure to the deployed configuration of the deployable fairing structure includes causing the actuator to rotate the deployable upper panel about a horizontal axis.
16. The method of claim 15 wherein the deployable fairing structure comprise a first deployable side panel pivotally coupled to the deployable upper panel assembly and a second deployable side panel pivotally coupled to the deployable upper panel assembly and causing the actuator to move the deployable fairing structure between the retracted configuration of the deployable fairing structure and the deployed configuration of the deployable fairing structure includes causing the actuator to rotate the deployable upper panel about a horizontal axis from the retracted configuration in which the deployable upper panel assembly extends downwardly with the first side panel and the second side panel are both retracted against the deployable upper panel assembly in the retracted configuration, to the deployed configuration in which the deployable upper panel assembly extends rearwardly and upwardly, with the first side panel and the second side panel both deployed perpendicularly relative to the deployable upper panel assembly in the deployed configuration.
17. The method of claim 16 , wherein the at least one actuator is a single actuator physically coupled to the deployable upper panel assembly, and causing the actuator to move the deployable fairing structure between the retracted configuration of the deployable fairing structure and the deployed configuration of the deployable fairing structure includes causing the actuator to rotate the deployable upper panel about a horizontal axis, and thereby causing the first side panel and the second side panel to be driven by a movement of the deployable upper panel assembly.
18. The method of claim 15 wherein the deployable upper panel assembly is attached to a back of a cab of a tractor, and causing the actuator to move the deployable fairing structure between the retracted configuration of the deployable fairing structure and the deployed configuration of the deployable fairing structure includes causing the actuator to rotate the deployable upper panel about a horizontal axis from the retracted configuration in which the deployable upper panel assembly extends downwardly from a back of a cab of a tractor.
19. The method of claim 15 wherein, the deployable upper panel assembly is attached to a back of a cab of a tractor, and causing the actuator to move the deployable fairing structure between the retracted configuration of the deployable fairing structure to the deployed configuration of the deployable fairing structure includes causing the actuator to rotate the deployable upper panel about a horizontal axis toward the deployed configuration in which the deployable upper panel assembly extends rearwardly a positive slope from a back of a cab of a tractor.
20. The method of claim 14 wherein the actuator is a pneumatic linear actuator and further comprising a valve physically coupled to the actuator, and wherein defaulting the deployable fairing structure to the retracted configuration of the deployable fairing structure includes:
biasing the valve to release air from under pressure from the actuator and to cause the deployable fairing to be in the retracted configuration in response to any one of: a power loss to the deployable fairing, a manual switch is positioned in an off position, the deployable fairing cannot receive data from a vehicle computer, a reading from a temperature sensor that indicates that an outside temperature is above an upper temperature threshold or below a lower temperature threshold, a reading from a wind sensor that indicates that a speed of a cross wind exceeds a cross wind threshold, a reading from a speed sensor that is below a speed threshold, or a stall condition in which the actuator is unable to move the deployable fairing to the deployed position.
21. The method of claim 14 , further comprising:
detecting, by a positional sensor, a position information related to at least a portion of the deployable fairing structure,
determining, by at least one processor of the control system, if an error condition exists based at least in part on the positional information, and
of occurrence of an error condition, causing the deployable fairing structure to move to the retracted configuration of the deployable fairing structure.
22. The method of claim 21 wherein determining if the error condition exist includes determining that the deployable fairing structure did not transition from the retracted configuration to the deployed configuration within an allotted period of time based at least in part on the positional information.