Aerodynamic system for vehicles and methods for operating the same

1. A fairing system, comprising:

a fixed fairing assembly configured to attach to a cab of a tractor-trailer, the fixed fairing assembly being a unitary assembly and comprising a first lateral portion, a second lateral portion, and a movable top portion;

a movable fairing assembly configured to attach to at least one of the fixed fairing assembly or the cab of the tractor-trailer; and

an actuator assembly configured to move the movable fairing assembly relative to the fixed fairing assembly.

2. The fairing system of claim 1 , wherein the fixed fairing assembly is configured to be at least one of: removably attached to the cab of the tractor-trailer; or permanently attached to the cab of the tractor-trailer.

3. The fairing system of claim 1 , wherein the fixed fairing assembly and the movable fairing assembly are configured to substantially completely enclose a gap defined between the cab and a trailer of the tractor-trailer.

4. The fairing system of claim 1 , wherein the movable fairing assembly is configured to be at least one of: removably attached to the cab of the tractor-trailer; permanently attached to the cab of the tractor-trailer; removably attached to the fixed fairing assembly; or permanently attached to the fixed fairing assembly.

5. The fairing system of claim 1 , wherein the actuator assembly is configured to move the movable fairing assembly from an undeployed position to a deployed position.

6. The fairing system of claim 1 , wherein the actuator assembly is configured to move the movable fairing assembly to at least one intermediate position between the undeployed position and the deployed position.

7. A fairing system, comprising:

a fixed fairing assembly configured to attach to a cab of a tractor-trailer;

a movable fairing assembly configured to attach to at least one of the fixed fairing assembly or the cab of the tractor-trailer, the movable fairing assembly configured to move from an undeployed position to a deployed position in which the fixed fairing assembly and at least one lateral portion of the movable fairing assembly forms a continuously outwardly tapered surface from a rear of the cab to the trailer; and

an actuator assembly configured to move the movable fairing assembly relative to the fixed fairing assembly.

8. The fairing system of claim 7 , wherein the at least one lateral portion comprises a plurality of lateral portions.

9. A fairing system configured to attach to a cab of a tractor-trailer, the cab having a first rectangular cross-sectional profile and a trailer of the tractor-trailer having a second, larger, rectangular cross-sectional profile, the fairing system comprising:

a fixed fairing assembly configured to attach to a cab of a tractor-trailer;

a movable fairing assembly configured to attach to at least one of the fixed fairing assembly or the cab of the tractor-trailer, the movable fairing assembly configured to move from an undeployed position to a deployed position in which the fixed fairing assembly and the movable fairing assembly form a continuously tapered surface from the first rectangular cross-sectional profile to the second, larger, rectangular cross-sectional profile; and

an actuator assembly configured to move the movable fairing assembly relative to the fixed fairing assembly.

10. A fairing system, comprising:

a fixed fairing assembly configured to attach to a cab of a tractor-trailer, the fixed fairing assembly having a movable first top portion;

a movable fairing assembly configured to attach to at least one of the fixed fairing assembly or the cab of the tractor-trailer, the movable fairing assembly having a movable second top portion; and

an actuator assembly configured to move the movable fairing assembly relative to the fixed fairing assembly.

11. The fairing system of claim 10 , wherein the movable fairing assembly is configured to move from an undeployed position to a deployed position during which the movable first top portion rotates in synchronicity with the movable second top portion.

12. The fairing system of claim 10 , wherein the movable fairing assembly is configured to move from an undeployed position to a deployed position during which the movable first top portion rotates rearward and downward.

13. The fairing system of claim 10 , wherein the movable fairing assembly is configured to move from an undeployed position to a deployed position during which the movable second top portion rotates rearward and moves upward.

14. The fairing system of claim 10 , wherein the movable fairing assembly is configured to move from an undeployed position to a deployed position during which the movable first top portion rotates rearward and moves downward and the movable second top portion rotates rearward and moves upward in synchronicity with the movement of the movable first top portion.

15. The fairing system of claim 10 , wherein the movable fairing assembly is configured to move from an undeployed position to a deployed position during which the movable second top portion rotates rearward and upward to at least partially cover a gap defined between the cab and a trailer.

16. The fairing system of claim 10 , wherein the movable fairing assembly is configured to move from an undeployed position to a deployed position during which the movable first top portion rotates rearward and downward and the movable second top portion rotates rearward and moves upward to form a substantially continuous surface between the cab and a trailer.

17. The fairing system of claim 16 , wherein the substantially continuous surface is configured to prevent a passage of air flow from outside of a gap defined between the cab and a trailer into the gap via the substantially continuous surface.

18. A fairing system, comprising:

a fixed fairing assembly configured to attach to a cab of a tractor-trailer, the fixed fairing assembly having a first plurality of lateral portions;

a movable fairing assembly configured to attach to at least one of the fixed fairing assembly or the cab of the tractor-trailer, the movable fairing assembly having a second plurality of lateral portions; and

an actuator assembly configured to move the movable fairing assembly relative to the fixed fairing assembly.

19. The fairing system of claim 18 , wherein the movable fairing assembly is configured to move from an undeployed position to a deployed position during which at least one of the second plurality of lateral portions rotate outward and upward.

20. The fairing system of claim 18 , wherein the movable fairing assembly is configured to move from an undeployed position to a deployed position thereby defining a longitudinal gap between the first plurality of lateral portions and the second plurality of lateral portions.

21. The fairing system of claim 20 , wherein the longitudinal gap has a length such that air flow from outside of a gap defined between the cab and a trailer is preventing from passing into the gap via the longitudinal gap.