Download or read book An Investigation of Drag Reduction for a Standard Truck with Various Modifications written by and published by . This book was released on 1981 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation of Drag Reduction for a Box shaped Vehicle with Various Modifications written by V. U. Muirhead and published by . This book was released on 1981 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book A Reassessment of Heavy Duty Truck Aerodynamic Design Features and Priorities written by Edwin J. Saltzman and published by . This book was released on 1999 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Aerodynamic Drag Reduction of Light Duty Trucks by Modification of Tailgates written by Bradley Ronald Law and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drag Reduction Obtained by Modifying a Standard Truck written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-26 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A standard two-axle truck with a box-shaped cargo compartment was tested to determine whether significant reductions in aerodynamic drag could be obtained by modifying the front of the cargo compartment. The coastdown method was used to determine the total drag of the baseline vehicle, which had a square-cornered cargo box, and of several modified configurations. Test velocities ranged from 56.3 to 94.6 kilometers per hour (35 to 60 miles per hour). At 88.5 kilometers per hour (55 miles per hour), the aerodynamic drag reductions obtained with the modified configurations ranged from 8 to 30 percent. Sheridan, A. E. and Grier, S. J. Armstrong Flight Research Center NASA-TM-72846, H-977
Download or read book Drag Reduction Obtained by Modifying a Standard Truck written by A. E. Sheridan and published by . This book was released on 1978 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drag Reduction Obtained by Modifying a Standard Truck written by Arthur E. Sheridan and published by . This book was released on 1978 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Qualitative Experimental Study of Drag Reduction Devices for Tractor Trailers with Ground Effects written by Nicolas Robert Reed and published by . This book was released on 2014 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an experimental qualitative study of how drag reduction devices affect air flow around a tractor trailer. A 1/32 scale detail model of a truck with its trailer was used for testing in a 20"x14" low speed wind tunnel at the University of Tennessee Space Institute. Major modifications were made to the wind tunnel so that it would include a moving bed (floor) section for ground effect simulation. This was done to accurately simulate relative ground movement with the truck being held stationary in the tunnel flow. Drag reduction devices were designed based on aerodynamic fundamental understanding for streamlining the various zones of the truck readily available for flow path modifications or flow management around the truck. The drag reduction devices were fabricated using a desktop 3D printer. Flow visualization was performed using sewing (twisted) string as tufts to validate if there were any flow improvement effectiveness as a result the flow management devices. A total of 102 tests were performed. This was done using 24 unique drag reduction devices, which were tested in 28 different configurations. Wind tunnel speed was in the range of 55 to 70 PMH at a corresponding tunnel unit Reynolds number of 5.6*10^5 to 7.12*10^5. Observations show that each device affects the flow, locally, and that an overall change in aerodynamic efficiency (drag reduction) can be achieved by the addition of a number of these devices. Test results from this investigation showed that the addition of drag reduction devices did change flow paths under the tractor trailer and did provide methods for managing flow under the trailer. A possible novel method for addressing the wake zone behind the tractor trailer, by addition of drag reduction devices installed under the trailer, was also investigated. Quantitative measurements are needed to determine the overall and individual contributions, and to select the best configuration of a number of configurations for maximum level of drag reduction.
Download or read book Computational Investigation of Drag Reduction of Trucks written by Yangyang Hu and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Fluid Dynamic (CFD) simulations of the steady state Reynolds-Averaged Navier-Stokes equations using the second order k- turbulence model were performed to investigate the Drag Coefficients of the Class 8 trucks under different geometric configurations. The reduction rates of aerodynamic drag using several add-on devices such as base flap, boat tail, underbody skirt and tractor-trailer gap are investigated through the CFD simulations. Moreover, simulations by using different lengths and angles of the base flap and boat tail were conducted; the comparison indicates that the base flap design is more effective for the drag reduction. The optimized range of the length and angle of the base flap design is confirmed by a set of systematic CFD simulations. Also, a set of wind tunnel experiments had been conducted to confirm the outcomes from the CFD simulations."
Download or read book An Investigation of Truck Aerodynamics with Various Drag Reducing Devices written by Hoi D. Le and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Investigation of Drag Reduction with a Rear Flap on Trucks written by Yangyang Hu and published by . This book was released on 2012 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SRIM Index written by and published by . This book was released on 1981 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1991-10 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heavy Truck Drag Reduction Through Rear of Trailer Aerodynamic Modifications written by Patrick McKay Dean and published by . This book was released on 2004 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The International Vehicle Aerodynamics Conference written by IMechE and published by Woodhead Publishing. This book was released on 2014-11-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamics has never been more central to the development of cars, commercial vehicles, motorbikes, trains and human powered vehicles, driven by the need for efficiency: reducing carbon dioxide emissions, reducing fuel consumption, increasing range and alleviating problems associated with traffic congestion. Reducing vehicle weight makes it more challenging to ensure that they are stable and handle well over a wide range of environmental conditions. Lighter structures are also more vulnerable to aerodynamically induced vibration. Alongside this, customers demand an environment that is quiet, comfortable and maintains their vision of the world around them in all weathers. These aims must be met by designing vehicles that engage customers emotionally, promoting the brand values of manufacturers and operators. This can only be done by collaboration between designers and aerodynamicists. Examine the latest developments in vehicle aerodynamic development Explore opportunities to network and share experiences around different areas Focus on future challenges and the engineering knowledge and technology required to resolve them Discuss other areas of development including handling and stability, tyre aerodynamics and modelling, aeroacoustics and fluid structure interaction
Download or read book Energy Abstracts for Policy Analysis written by and published by . This book was released on 1981 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt:
