درباره ما
NASA-TM-X-56023
Drag reduction obtained by rounding vertical corners on a box-shaped ground vehicle
Year: 1974
Abstract: 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 1,000,000 to 1.0 x 10 to the 7th power based on vehicle length. The modified configuration showed a reduction in aerodynamic drag of about 40 percent as compared to the square cornered configuration.
Subject: AERODYNAMIC
-
Statistics
NASA-TM-X-56023
Show full item record
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:11:58Z | |
| date available | 2017-09-04T15:11:58Z | |
| date copyright | 01/01/1974 | |
| date issued | 1974 | |
| identifier other | LVTKAEAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/10377 | |
| description abstract | 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 1,000,000 to 1.0 x 10 to the 7th power based on vehicle length. The modified configuration showed a reduction in aerodynamic drag of about 40 percent as compared to the square cornered configuration. | |
| language | English | |
| title | NASA-TM-X-56023 | num |
| title | Drag reduction obtained by rounding vertical corners on a box-shaped ground vehicle | en |
| type | standard | |
| page | 21 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1974 | |
| contenttype | fulltext | |
| subject keywords | AERODYNAMIC | |
| subject keywords | BOXES | |
| subject keywords | CONTAINERS | |
| subject keywords | CORNER | |
| subject keywords | CORNERS | |
| subject keywords | DRAG | |
| subject keywords | FLOW | |
| subject keywords | INDICATORS | |
| subject keywords | MEASUREMENT | |
| subject keywords | OSCILLOGRAPHS | |
| subject keywords | REDUCTION | |
| subject keywords | SPEED | |
| subject keywords | TRUCKS |