Freight Wing does offer a Rear Fairing which can provide fleets an inexpensive option to experiment with this emerging technology. With an artic, wind passes over the cab roof and then hits the trailer. Unfortunately, a practical rear fairing system has remained a tough design challenge that many have tried, but none have been able to consistently prove in legitimate SAE J1321 testing situations or in field operations. AN IVECO STRALIS with a custom-built air deflector on top of the cab and behind. Rear FairingsĪlthough streamlining the rear of the box trailer has obvious potential for improvement, realizing these gains are extremely difficult due to the operational constrains of rear door configurations and the large structure required to achieve even a modest drag reduction. This is a proven area for practical improvements as gap fairings are inexpensive, lightweight and pose no operational problems. The Freight Wing Gap Fairing solves this problem by protecting the top and side edges of the trailer’s face with curved airfoils that leave plenty of room for turning. Tractor manufacturers have made great progresses towards this ideal through aerodynamic roofs and side extensions, but additional improvements are impractical as the remaining gap is crucial to truck operation as it enables a truck to turn.īecause a sizable 24” to 48” tractor trailer gap still exists even in the most efficient set up, air still enters the gap to hit the trailer's front face directly, especially in cross winds. Ideally, this space would be sealed completely. The gap between tractors and trailers is another high drag region that is easily streamlined. With up to 7% fuel savings available from this new system, the competitive edge gained in long haul operations with the Aeroflex is truly remarkable. The new state of the art wedged skirting geometry developed by Freight Wing and featured on the Aeroflex fairing has introduced the industry to levels of performance that can not be ignored. Trailer skirting technology is very effective in redirecting airflow and crosswinds around the drag inducing rear wheel, axle components and cross members to provide improved laminar air flow around the trailer. Freight Wing welcomes this new competition as it validates what we have been doing for years in promoting this important fuel saving strategy. This statement in not only based on Freight Wing’s pioneering work in this area, but is supported by 18 different skirting products that have recently been able to meet the 4% minimum SAE J1321 type II testing requirement of the EPA SmartWay’s verified aerodynamic technologies list.
The area underneath a trailer represents the greatest opportunity for significant and practical
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