Abstract: The purpose of this invention is to reduce the fuel consumption of heavy trucks by maximizing laminar flow alongside trailer walls. Fins extending from the bottom edge of the trailer side rail form a barrier between regions of high and low pressure, separating the turbulent air of the vehicle undercarriage and the more stable airflow above. Overlapping plastic forms with a flat surface are angled downward and outward and installed along the length of the vehicle. Through a tube fitted with a pipe, a fin is clamped to bars that span the gap between trailer crossmembers. Configured for comprehensive coverage fore to aft with limited lateral extent, this creates a streamlined aerodynamic profile. Its preservation of laminar flow is useful in insolation and increases the effectiveness of other fairings.

Abstract: The primary purpose of this device is to reduce the fuel consumption of heavy trucks by improving airflow along the underside of a trailer, by way of a fairing mounted forward of the axles. This fairing is a teardrop shaped wedge with a flat bottom surface, which directs air towards the sides of the vehicle, while allowing a smaller volume to flow beneath the fairing such that it will clear the axles. Each axle is also covered by a flat panel, such that air will continue to travel smoothly beneath them. Attached to each panel is a brake cooling system, which consists of a pair of panels protruding downward, with their surfaces parallel to the direction of airflow. When the brakes are engaged, these panels rotate towards the center in an angled configuration, which redirects air towards the drums during and after braking, cooling them quickly and efficiently.