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Viewing 1 to 30 of 3450
2015-09-29
Technical Paper
2015-01-2895
Prasad Vegendla, Tanju Sofu, Rohit Saha, Mahesh Madurai Kumar, Long-Kung Hwang
This paper investigates the aerodynamic influence of multiple on-highway trucks in different platooning configurations. Complex pressure fields are generated on the highways due to interference of multiple vehicles. This pressure field causes an aerodynamic drag to be different than the aerodynamic drag of vehicle in no traffic condition. In order to study, the effect of platooning, three-dimensional modeling and numerical simulations are performed using STAR-CCM+® commercial Computational Fluid Dynamics (CFD) tool. The aerodynamic characteristics of vehicles are analyzed in five different platooning configurations with two and three vehicles in single and multiple lanes. A significant Yaw Averaged Aerodynamic Drag (YAD) reduction is observed in both leading and trailing vehicles. It is noted that YAD is based on the average result of three different yaw angles at 0, -6 and 6o. In single lane traffic, YAD reduction is up to 8% and 38% in leading and trailing vehicles, respectively.
2015-09-29
Technical Paper
2015-01-2896
Matthew Ellis, Joaquin Ivan Gargoloff, Raja Sengupta
The increasing importance of reducing greenhouse gas emissions and the ongoing evolution of vehicle-to-vehicle connectivity technologies have generated significant interest in platooning for commercial vehicles, where two or more vehicles travel in same traffic lane in relatively close proximity. This paper examines the effect of platooning on four increasingly aerodynamic tractor-trailer configurations, using a Lattice Boltzmann based CFD solver. Each platoon consisted of three identical tractor-trailer configurations traveling in the same lane at 65mph. Two different vehicle to vehicle gaps were studied, 5m and 9m, in addition to singleton vehicles, representing an effectively infinite gap. Aerodynamic drag for the lead, middle, and trailing vehicle in the platooning configurations were compared to the corresponding single vehicle tractor-trailer configuration.
2015-09-29
Technical Paper
2015-01-2897
Rick Mihelic, Jeff Smith, Matthew Ellis
Modern aerodynamic Class 8 freight tractors can improve vehicle freight efficiency and fuel economy versus older traditional style tractors when pulling Canadian style A- or B-Train double trailer long combination vehicles (LCV's) at highway speeds. This paper compares the aerodynamic performance of a current generation aerodynamic tractor with several freight hauling configurations through computational fluid dynamics evaluations using the Lattice-Boltzmann methodology. The configurations investigated include the tractor hauling a standard 53' trailer, a platooning configuration with a 30' separation distance, and an A-Train configuration including two 48' trailers connected with a dolly converter. The study demonstrates CFD's capability of evaluating extremely long vehicle combinations that might be difficult to accomplish in traditional wind tunnels due to size limitations.
2015-09-15
Technical Paper
2015-01-2480
Giorgio Gaviraghi
Developing the MAAT (Multibody advanced airship for transport ) project concept, a cruiser-feeder airship, all green, transportation system, financed by the European Union in the frame of the FP 7 research plan, we realized that is possible to explore future potential developments of the basic concepts , the multibody transportation system, also for regular aircrafts with most implications and issues that the new concept may raise.
2015-07-24
Article
For the first time since the Second World War, the Japanese aerospace industry has demonstrated a new defense air program overseas in an attempt to interest potential export customers.
2015-07-23
Article
The company is looking at adjacent markets for its large video screens and sees the truck industry as a potential opportunity. The Safety Truck prototype was developed with the aim of improving road safety.
2015-07-19
Article
L-3 Aviation Products announced that Hindustan Aeronautics Ltd (HAL) has selected its Tactical Airborne Navigation System, TACAN+, for its new Light Utility Helicopter (LUH) program. The TACAN+ transceiver is a small and light tactical airborne navigation system capable of tracking up to four ground stations simultaneously in range and two in bearing.
2015-07-19
Article
Indian mining company BGR Mining & Infra recently placed an order for 200 Scania P 410 tipper trucks, adding to the company’s current fleet of 246 Scania vehicles. BGR Mining & Infra Managing Director B.
2015-07-17
Article
Mercedes-Benz has expanded its local production portfolio at its Pune, India, assembly plant to six model series with the recent addition of the GLA compact SUV. The other models include S-, E-, and C-Class sedans as well as the GL and M-Class SUVs.
2015-07-17
Article
Jet Aviation Geneva recently received CAR-145 approval from the Director General Civil Aviation (DGCA) in India to provide base maintenance services to Indian-registered Gulfstream and Bombardier aircraft.
2015-07-16
Article
An important element in its recent world tour was the participation of the new HondaJet at the European Business Aviation Convention and Exhibition (EBACE), held at Geneva, which was its first European appearance.
2015-07-15
Article
City dwellers need vehicles that are tailored to the tight confines of urban driving. In this episode of SAE Eye on Engineering, Senior Editor Lindsay Brooke looks at ZF's Smart Urban Vehicle. SAE Eye on Engineering can be viewed at https://youtu.be/-u0TO8H51zY.
2015-07-15
Article
The all-new 2016 XC90 is built on the mixed-materials SPA chassis and includes PHEV propulsion among its 4-cylinder-only powertrain packages. It shows the future direction of Volvo cars—including automated driving.
2015-07-13
Article
In addition to lighter weight and significant improvements in efficiency, the new car employs plenty of technology and driver support.
2015-07-12
Article
Eicher Polaris Pvt. Ltd. recently launched what it claims is India’s first personal utility vehicle (PUV), the Multix, creating a new category in the automotive segment. Purpose-built, specially designed, and powered by a diesel engine, Multix is available in two variants and four colors, starting at a price of $3638 US.
2015-07-09
Article
The special-edition Deutz-Fahr 7250 Warrior features the Hella Module 70 LED Generation IV and is claimed to be the first tractor in the market to incorporate this latest-generation LED package.
2015-07-01
Article
Its programs include driver brain wave analysis, heart and respiration monitoring, safer autonomous driving, and added driver support.
2015-07-01
Article
All-new lightweight composite bodyshell, supercharged 336-kW (450-hp) V6 engine, and an open cockpit without windshield or doors—that's Lotus's no-nonsense 3-Eleven, its quickest production model to date.
2015-06-30
Article
What would the Chevy Camaro be without a convertible version? In this episode of SAE Eye on Engineering, Senior Editor Lindsay Brooke looks at what GM engineers claim is the most advanced top system in the sporty-car segment. 
2015-06-30
Article
Lighter, more aerodynamic, and with Off-Road Engineering package, the Mercedes-Benz GLC replaces the GLK.
2015-06-29
Article
Two years after the third-generation Mitsubishi Outlander arrived in the U.S. market, the crossover utility vehicle was revised for the 2016 MY with new signature front-end styling and 100-plus engineering and design changes.
2015-06-25
Article
GM's best-selling global product, the new Cruze shifts to the D2XX compact platform--a move helps create a roomier vehicle while weighing less than the outgoing model.
2015-06-19
Article
SAE International has published the new book, Ice Accretion and Icing Technology by Robert J. Flemming. The collection consists of 10 SAE International technical papers, chosen by Flemming, a known expert in the field.
2015-06-19
Article
Hyundai Heavy Industries Europe considers the brand-new 52-t HX520 L, which debuted at Intermat 2015, one of the most important members in the all-new Hyundai crawler excavator HX family.
2015-06-19
Article
All three models feature Tier 4 Final PowerTech diesel engines and a pressurized Deere-designed cab, both of which combine to boost productivity and uptime, while minimizing daily operating costs.
Viewing 1 to 30 of 3450

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