Drag Reduction Obtained by Rounding Vertical Corners on a Box-Shaped Ground Vehicle
- NASA Dryden Flight Research Center, Edwards, CA (United States)
A box-shaped ground vehicle was used to simulate the aerodynamic drag of delivery vans, trucks, and motor homes. A coast-down method was used to define the drag of this vehicle in a configuration with all square corners and a modified configuration with the four vertical corners rounded. The tests ranged in velocity from 30 miles per hour to 65 miles per hour, and Reynolds numbers ranged from 4.4 x 106 to 1.0 x 107 based on vehicle length. The modified configuration showed a reduction in aerodynamic drag of about 40 percent as compared to the square-cornered configuration.
- Research Organization:
- NASA Dryden Flight Research Center, Edwards, CA (United States)
- Sponsoring Organization:
- National Aeronautics and Space Administration (NASA)
- OSTI ID:
- 7104927
- Report Number(s):
- NASA-TM-X-56023
- Country of Publication:
- United States
- Language:
- English
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