Pivoting Cab Fairing Panel for Aerodynamics and Service Access
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Solution Overview
Problem
Conventional fairing panels on vehicles are fixed, obstructing access to components behind or underneath the vehicle and compromising ease of maintenance while maintaining aerodynamics.
Innovation Solution
A rotatable fairing panel that hinges at the rear end of a vehicle, allowing it to switch between a closed position for aerodynamics and an open position for access, equipped with locking mechanisms to secure it in place during driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional fixed fairing panels are used, then aerodynamic performance is improved, but access to vehicle components is worsened
Solution Approach 1:
The fairing panel is transformed from a fixed structure to a dynamic one that can rotate between a closed position (for aerodynamics) and an open position (for access). The panel is hingedly coupled to the vehicle body and can be positioned in multiple locations along its rotation path, allowing it to adapt between maintaining aerodynamic surfaces and providing access to components behind or underneath the panel.
2Device complexity
If conventional fixed fairing panels are used, then structural simplicity is improved, but maintenance accessibility is worsened
Solution Approach 1:
The fairing panel incorporates a rotation mechanism with hinge coupling and positioning features that allow it to move between closed and open positions. This dynamic capability enables maintenance personnel to access components behind or underneath the panel by rotating it to an open position, while maintaining relative structural simplicity through the use of hinge coupling and positioning features rather than complex mechanisms.
3Ease of operation
If rotatable fairing panel is opened for access, then ease of operation is improved, but aerodynamic performance is worsened
Solution Approach 1:
The fairing panel can be dynamically positioned in a closed position that defines aerodynamic surfaces with the external surfaces of the vehicle, reducing drag when the vehicle is in use. When access is needed, the panel can be rotated to an open position while the vehicle is stationary, allowing maintenance personnel to access components behind or underneath the panel.
Solution Approach 2:
The fairing panel alternates between closed and open positions based on operational requirements. It remains closed during vehicle operation to maintain aerodynamics, and is opened periodically when maintenance or access to components is required, then closed again for subsequent operation.
4Ease of operation
If rotatable fairing panel mechanism is added, then access to components is improved, but device complexity is worsened
Solution Approach 1:
The rotation mechanism uses hinge coupling between the fairing panel and vehicle body, combined with positioning features that engage at specific locations along the rotation path. This approach provides the necessary dynamic functionality for access while keeping the mechanism relatively simple compared to more complex articulation systems.
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
The present disclosure is directed to a rotatable fairing panel at a rear end of a sleeper cab. The rotatable fairing panel covers an opening between a trailer attached to a vehicle and the sleeper cab of the vehicle. The rotatable fairing panel has a closed position and an opened position. At least one locking assembly locks the rotatable fairing panel in place when in the closed position. The at least one locking assembly is configured to be unlocked by a user such that the rotatable fairing panel may be rotated from the closed position to the opened position such that a user may access the opening between the trailer attached to the vehicle and the sleeper cab of the vehicle. The at least one locking assembly automatically locks when the user rotates the rotatable fairing panel into the closed position.