Articulating Air Wall for Semi-Truck Trailer Gap Drag Reduction
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Solution Overview
Problem
Aerodynamic drag caused by air entering the gap between a tractor and its trailer leads to significant fuel inefficiency in truck transportation, with existing solutions often requiring complex installations or active retraction mechanisms that can interfere with truck operations.
Innovation Solution
A simplified apparatus featuring a minimal frame assembly with adjustable components that supports a panel assembly to cover the lateral gap between the tractor and trailer, allowing for easy retrofitting and maintaining contact with the trailer during turns without the need for active deployment or retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a complex active fairing system with inflatable panels and blowers is used to close the gap, then aerodynamic drag is reduced, but device complexity and ease of operation deteriorate due to multiple components and active deployment mechanisms
Solution Approach 1:
The patent removes the complex active deployment mechanisms (blowers, vacuum units, cables, reels) from the fairing system, retaining only the essential panel structure that closes the gap. This extraction of unnecessary components directly reduces device complexity while preserving the aerodynamic drag reduction function.
Solution Approach 2:
The simplified fairing system is designed to be passively deployed and maintained without requiring active control systems. The panel assembly automatically positions itself to close the gap between tractor and trailer, eliminating the need for blowers, vacuum units, and electronic controllers, thereby reducing both device complexity and operational complexity.
2Object-affected harmful factors
If inflatable panels with magnets and cables on reels are used, then aerodynamic drag is reduced, but ease of operation worsens due to active deployment and retraction mechanisms
Solution Approach 1:
The fairing panel is designed to deploy and maintain its position passively without requiring active control. The system eliminates blowers, vacuum units, and cable-reel mechanisms, allowing the panel to automatically close the gap and remain in place through its structural design and magnetic attachment, significantly improving ease of operation.
3Object-affected harmful factors
If a rigid fairing structure is used to close the gap, then aerodynamic drag is reduced, but adaptability worsens due to inability to accommodate different tractor-trailer configurations
Solution Approach 1:
The patent employs a dynamic panel assembly that can articulate and adjust its position relative to the tractor and trailer. The panel is mounted on a mechanism that allows it to move and adapt to different gap sizes and angles, enabling the same structure to effectively close the aerodynamic gap across various tractor-trailer configurations while maintaining drag reduction.
4Object-affected harmful factors
If active fairing systems are deployed at all speeds, then aerodynamic drag is reduced, but ease of operation worsens due to interference with turning maneuvers at lower speeds
Solution Approach 1:
The simplified fairing system is designed to be passively deployed and maintained without requiring active control systems. The panel assembly automatically positions itself to close the gap between tractor and trailer, eliminating the need for blowers, vacuum units, and electronic controllers, significantly improving ease of operation while maintaining drag reduction effectiveness.
Data Source
AI summary
An apparatus for reducing aerodynamic drag in a gap between a tractor and a trailer comprises a frame assembly and a panel assembly. The frame assembly includes a vertical member extending upwardly from a base, and two arms extending horizontally from the vertical member. The horizontal arms support a cylindrical member which rotates about its longitudinal axis and is biased by a biasing member so as to apply torque to the cylindrical member. The panel assembly is attached to the cylindrical member proximate a leading edge of the panel and includes a wheel offset from a trailing edge of the panel and gliding strips on an inner surface of the panel body. The inner surface of the panel body is in contact with a surface of the trailer proximate the wheel when the tractor is attached to and pulling the trailer.