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http://www-personal.umich.edu/~yanjin/Final%20Report_UPS_EPA.pdf
was on evaluating the drag characteristics and optimizing the aerodynamics of UPS delivery vehicles. Preliminary calculations showed that for a full-sized truck, a reduction in the drag coefficient by 0.01, on average, results in an improvement of the fuel economy by 0.1 miles per gallon.
https://www.nrel.gov/docs/fy16osti/64049.pdf
is achieved for the regional delivery truck during HHDDT mode. Figure 5. The impact of coefficient of aerodynamic drag on FC for a regional delivery truck over various driving cycles (truck weight = 33,237 lbs., coefficient of rolling resistance μ = 0.0085, and frontal area 9.5 m
https://www.engineeringtoolbox.com/drag-coefficient-d_627.html
The drag coefficient is a function of several parameters like shape of the body, Reynolds Number for the flow, Froude number, Mach Number and Roughness of the Surface. The characteristic frontal area - A - depends on the body. Objects drag coefficients are mostly results of experiments. The drag coefficients for some common bodies are indicated ...
https://www.agricover.com/downloads/pdf/2007_windtunnel.pdf
of the trucks and the walls of the test area could have contributed to an increase in the coefficient of drag for each of the trucks. We did not want to publish a paper saying, for example, that the coefficient of drag for a 2007 GMC Sierra is X. Secondly, normalizing . C. d. was done in the interest of the SEMA member companies participating.File Size: 399KB
http://www.solusinc.com/pdf/2003-01-3377.pdf
the estimated initial and final aerodynamic drag values of the subject tractor-trailer truck. To achieve the fuel economy goal, the aerodynamic drag of the vehicle would have to be reduced 30% at 60 mph. This drag reduction goal corresponds to a reduction in the tractor–trailer truck drag coefficient from 0.70 to a value of 0.50. Design Approach
https://www.curbsideclassic.com/automotive-histories/automotive-aerodynamics-drag-area-size-matters/
That’s why Cd is called the drag coefficient – it’s Cd times A, the drag area, that counts. Production cars cover the full range from sublime (2000 Honda Insight, with a CdA of 5.1 square feet) to ridiculous (2003 Hummer H2, 26.5 sq. ft.) Wikipedia has a huge list of drag coefficients, and a good list of drag areas.
https://www.researchgate.net/publication/304710643_The_Determination_Of_Aerodynamic_Drag_Coefficient_Of_Truck_and_Trailer_Model_By_Wind_Tunnel_Tests
The drag coefficient value only for semi-truck is 0.608, and for truck with trailer is 0.704. Which means that the drag coefficient of trailer increased by 15.8% [10]. Figure 9 shows that the ...
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